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1
Schueller, David Allan. "Farming theological reflections and ecological directions /." Theological Research Exchange Network (TREN), 1991. http://www.tren.com.
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Law, Derek M. "ECOLOGICAL WEED MANAGEMENT FOR ORGANIC FARMING SYSTEMS." UKnowledge, 2006. http://uknowledge.uky.edu/gradschool_theses/414.
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Two field studies examining direct ecological weed control practices were conducted in Lexington, Kentucky. The first evaluated weed control efficacy and influence on yields of several mulches in two organically-managed bell pepper (Capsicum annum) production systems for two years. Peppers were planted in double rows in flat, bare ground or on black polyethylene-covered raised beds with drip irrigation, and four mulches (straw, compost, wood chips, and undersown white dutch clover (Trifolium repens L.) living mulch) were applied to the two production systems. In both years, polyethylene-covered raised beds produced higher yields than the flat, bare ground system. In the second year, the polyethylene-covered bed system coupled with mulching in-between beds with compost or wood chips after cultivation provided excellent weed control and yields. The second field study evaluated the efficacy of soil solarization and shallow cultivation on the invasive and noxious weed johnsongrass over two years (Sorghum halapense). A soil solarization treatment, using clear plastic stretched over soil for eight weeks, and a cultivated bare fallow treatment, utilizing a tractor pulled cultivator implement equipped with sweep blades, were randomly applied during the summers of 2003 and 2004 to a field infested with johnsongrass. Solarized and cultivated plots in both years were lightly tilled 8 months after completion of the initial treatment period. At the conclusion of the experiment the johnsongrass population was significantly reduced in all treatments and in the control plots compared to the original infestation. These two experiments testing direct weed control practices (mulching, cultivation, solarization) were undertaken in the context of an ecological weed management plan that includes long term strategies to reduce weed infestations such as crop rotation, cover cropping, and fertility management that are essential for organic farmers.
3
Boag, Franca Elise. "Integrated Mediterranean farming and pastoral systems : local knowledge and ecological infrastructure of Italian dryland farming /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq22954.pdf.
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Bobeche, Giddy. "Ecological, economic, and organizational dimensions of organic farming in Miami-Dade County." FIU Digital Commons, 2006. http://digitalcommons.fiu.edu/etd/1697.
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The purpose of this research was to determine what challenges small-scale organic farmers face in choosing their particular production, marketing, and organizational strategies in Miami-Dade County. Rapid soil assessments were used on six organic farms to determine the effects of soil nutrient management in terms of pH, soil organic matter (SOM), and phosphorus (P). Potential costs of inputs were documented for each farm to determine the largest challenges facing the profitability of organic farms. A production, marketing, and organizational analysis determined how farmers shape their inter-farm competitive and cooperative relations. Preliminary findings from soil, input, labor, marketing, and organizational factors indicate that soil health varies dramatically from farm to farm, inputs and labor constitute significant costs, and marketing, production, and organizational strategies show no signs of immediate growth.
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Myers, Michael David. "Cultivation ridges in theory and practice : cultural ecological insights from Ireland /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.
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Kelton, Andrew John. "Adaptive rationality : government policy towards ecological effects of salmon farming in British Columbia." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/30783.
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The rapid 1980's development of the salmon farming industry in British Columbia has been called "a poorly defined experiment in a poorly understood coastal environment", and the main impetus behind it described as "the chaotic, bottom-line orientation" not only of the industry itself but also of relevant government policy. The purpose of this thesis is to elaborate on these themes by identifying and delineating the most significant reasoning models underlying government development policy; and to offer an evaluation of the policy's 'rationality'.
Throughout the development of the industry, but particularly in the early stages, two major areas of uncertainty have been prevalent. First, detailed government policy towards salmon farming has been far from clear - an inarticulation that is characteristic of the philosophy of laissez faire, which was particularly influential in Canadian government policy in the early 1980's. Secondly, a variety of possible ecological impacts have been suspected from the outset.
A heuristic approach, both for the basic method employed in the thesis and for the normative model set up to evaluate government policy, is advanced for addressing these different uncertainties. In order to identify relevant policy, it is hypothesized that systems of ideas expressed formally in 'core' models of neoconservative and neoclassical economics were particularly important policy influences.
It is argued that the core concept of neoconservative theory (as defined) is the adaptive efficiency of the autonomous market. The theory's fundamental adaptive ideas - economic information 'discovery' by competitive trial-and-error selection, and consumer
'regulation' via the price system - are to be found in representative federal and provincial economic policy documents from the early 1980's, as well as in the occasional government elucidations of B.C. salmon farming policy (scattered in heterogeneous historical sources). An examination of (inferred) specific decisions relevant to ecological aspects of salmon farming reveals the influence of trial-and-error - deliberate omission of government planning - on early salmon farm siting policy; and the influence of the presumption of consumer 'sovereignty', which was assumed to obviate the need for government ecological regulation.
The relevant core concept of neoclassical economics (as defined) is the rational model derived from the conception of homo economicus. The model and its derivations are visible in the same early 1980's economic policy documents, which outline public sector 'restraint' criteria, as well as in salmon farming policy elucidations. It is argued that the maximizing 'solution' prescribed by the model is without operational significance in complex, uncertain situations, where ostensible use of the formal technique may be to legitimate decisions taken on other grounds.
The normative model set up to evaluate government policy is drawn from three sources: Friedrich Hayek's rationalization of the adaptive market process, C.S. Holling's prescriptions for "adaptive environmental assessment and management", and Herbert Simon's development of "procedural rationality". These models support the conclusion that acquisition of information by the agency that mediates actions and goals - which, in the case of ecological regulation, must be government - has major value as the basis of more rational decisions. But acquiring conclusive evidence by trial-and-error learning involves risk of serious error, particularly irreversible ecological harm, and it is rational to utilize the
inconclusive evidence that is always available for making general predictions, in order to guide search and select lesser risks.
Incorporating the important constraint of search costs - particularly significant in the economic recession of the early 1980's - the requirements for rational adaptation become minimal, procedural ones of 'reasonableness': lack of bias towards any class of information relevant to social welfare; lack of denial of uncertainties, and thus of development risks, in the complex and little-known salmon farming environment; and timely response to uncertainties subsequently, adequately resolved by experience. It is suggested that all three requirements were infringed by government policy towards salmon farming development.Science, Faculty of
Resources, Environment and Sustainability (IRES), Institute for
Graduate
7
Bijtel, Eric Mellink 1955. "Some ecological characteristics of three dry farming systems in the San Luis Potosi Plateau, Mexico." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/191108.
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In order to understand the ecological characteristics of three dry farming systems in the semiarid San Luis Potosi Plateau, Mexico, a one year study was conducted. The systems studied were a purely rainfed field, a field on an alluvial fan irrigated with runoff water, and a field in a bottomland irrigated with water diverted from an ephemeral stream. Three treatments, farmed, edge and unfarmed, were established in a Randomized Block design, with three replications, for each system. The major conclusions of this research were the following. During the summer, climate is resposible for a concentration of the communities's production and reproduction. Climate is also of paramount importance to agriculture. Rainy periods, on the other hand, decreased the activity of animals. None of the farming systems had detrimental effect on soil fertility. Only slight modifications of soil temperature and air temperature and humidity resulted from farming. A general overview of all the results did not provide evidence that all farming systems decrease biotic richness and diversity. The effects depended on the type of system, its isolation, and the natural vegetation adjacent to it. Herbs were enhanced by farming only when the natural system was relatively free of them. Farming did not have important effects on invertebrates. Birds were negativelly affected by farming, whenever the unfarmed areas included an arboreal stratum. Also, insectivorous birds responded differently than non-insectivores. Rodents were affected negatively by farming in two of the systems, and this could be linked to habitat simplicity. In one case, dense herb cover was associated with very high rodent populations. In general the data adjusted to the hypothesis that structurally more heterogeneous agroecosystems hold more diverse biotas. The concepts of "farmland biota" and "edge effect" were not supported by this study. Edges were ocasionally superior, and only when they included more complex plant communities than either side. A mosaic of heterogeneous farmlands and natural vegetation attracts certain rodents and birds, increasing environmental diversity.
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Campbell, Dana. "Sustainable assumptions : modelling the ecological impacts of pre-pottery Neolithic farming communities in the Levant." Thesis, University of Liverpool, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501734.
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During the Pre-Pottery Neolithic - Pottery Neolithic transition in the Levant, several centuries after the widespread adoption of agriculture and shortly after the adoption of mixed farming, a number of large, formerly successful communities seem to have been abandoned. These apparent settlement transformations are reported to have occurred alongside changes in technology and production, ideological behaviour and the treatment of the dead, and subsistence economy. Whether one views these purported changes as evidence of 'collapse' or not, particular transformations do seem to have taken place and require explanation. Several proposed models attempt to explain why these changes may have occurred, but the anthropogenically induced ecological degradation argument is the most pervasive. While this model has already been tested in a preliminary manner, detailed evaluation of the degradation argument partly based on agronomic research on the ecological impacts of mixed farming is still due.
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Hayashi, Yukihiro. "ECOLOGICAL STUDIES ON THE TRANSITION FROM SHIFTING CULTIVATION TO CONTINUOUS FARMING IN THE UPLAND FIELD." Kyoto University, 1993. http://hdl.handle.net/2433/168908.
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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものであるKyoto University (京都大学)
0048
新制・課程博士
博士(農学)
甲第5427号
農博第758号
新制||農||649(附属図書館)
学位論文||H5||N2561(農学部図書室)
UT51-93-F184
京都大学大学院農学研究科熱帯農学専攻
(主査)教授 重永 昌二, 教授 久馬 一剛, 教授 古川 久雄
学位規則第4条第1項該当
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Ward, Catherine Dale. "Climate variability in social-ecological systems of the Southern Cape: integrating farming and fishing perspectives." Doctoral thesis, Faculty of Science, 2018. http://hdl.handle.net/11427/30088.
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Large scale shifts playing out on global climate levels are manifesting locally in the South Africa’s terrestrial and marine ecosystems, where it is difficult to predict how different habitats may respond to these changes in natural systems, particularly at local levels. For example, the highly complex nature of climate variability in the southern Cape and on the Agulhas Bank, coupled with the lack of long-term environmental monitoring data, has resulted in knowledge gaps on how climate impacts these local social-ecological systems. This thesis focuses on bringing together knowledge systems from farmers, handline fishers and local scientific weather sources to examine climate variability in terrestrial and marine social-ecological systems of the southern Cape, in order to bring local perspectives into conversation with scientific data outputs. Through examining different knowledge systems in parallel and overlaying different perspectives and observations, this thesis contributes towards a better understanding of complex systems change, linked through the common thread of climate variability under a resilience lens, at the local scale of the southern Cape and Agulhas Bank. This thesis also contextualises responses to change under the theme of climate variability from farmers’ and fishers’ perspectives, and shows how different theoretical discourses can work in a complementary fashion to address complexity. The terrestrial component of this thesis examined local agricultural perspectives by surveying southern Cape farmers, and built in terrestrial scientific data through looking at local climate in relation to farming perspectives. Observations on terrestrial rainfall and temperatures were collected through interviews with 50 farmers, along with shared rainfall records from 13 farming families and ten official weather stations in the area. Fisher perspectives in relation to climate variability were then integrated with marine scientific data to examine the marine component of the Agulhas Bank. Fisher observations of climate variability were examined by drawing on existing research conducted through the South Coast Interdisciplinary Research Project. Marine wind data were obtained through model outputs from NCEP-DOE Reanalysis and a recent scatterometer-based product. Overlaying these different bodies of knowledge reduced the uncertainties associated with any single set of observations and confirmed two environmental regime shifts in the region, in the mid-1990s and end-2000s. Local climate knowledge of farmers and fishers also overlapped and corroborated these environmental regime shifts. Changes in prevailing wind direction, rather than wind speed, were more prominent over time. While no clear trends of change over time were found in rainfall and temperature time series, decadal variability was present and after the mid-2000s, the onset of seasonal autumn rainfall was found to have shifted to a month later. Knowledge disconnects were broadly related to scale mismatches between fisher observations and marine data tendencies; complexities around freshwater availability; and shifting baselines of natural resources concerning present versus past variability observed by farmers and fishers. Responses to climate variability were complex and other stressors associated with economic and political challenges were usually seen as a greater threat to local livelihoods. However, climate stressors can push social-ecological systems into vulnerable states if not well integrated into adaptation strategies, which can have serious implications for future food and job security in the southern Cape. Local-based case studies such as this one increase understanding of local social-ecological systems under global change in an effort to contribute to future adaptation strategies in the southern Cape region.
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Dickinson, Jeffrey Alan. "Comparative economic and ecological analyses of lower chemical input fruit farms and other farming systems /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487929745334264.
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Thapa, Balaram. "Farmers' ecological knowledge about the management and use of farmland tree fodder resources in the mid-hills of eastern Nepal." Thesis, Bangor University, 1994. https://research.bangor.ac.uk/portal/en/theses/farmers-ecological-knowledge-about-the-management-and-use-of-farmland-tree-fodder-resources-in-the-midhills-of-eastern-nepal(64b21fae-d33d-466a-9a09-3333ff0a0746).html.
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Warren, Alec J. "Britain's Green Fascists: Understanding the Relationship between Fascism, Farming, and Ecological Concerns in Britain, 1919-1951." UNF Digital Commons, 2017. http://digitalcommons.unf.edu/etd/755.
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This study explores the relationship between fascism, fascist ideas, and environmental consciousness in Britain during the pre- and post-World War II decades. In examining this topic, two main questions arise. First, why did fascist intellectuals support environmentally conscious ideas, and how did they relate these positions to their political ideologies? Second, why were many environmentally conscious thinkers during this period attracted to fascism? This thesis will also address several related issues regarding fascism and environmental consciousness. These issues include what role environmental concerns played in the British Union of Fascist’s platforms and in fascism’s public appeal, and how that role changed as the party’s needs and goals changed. This project also addresses how former members of the BUF drew attention to environmental issues after World War II, and how such ideas related to broader environmental discussions taking place in Britain at the time.
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Bento, Eliana Mendes da Silva. "Hortas urbanas." Master's thesis, Universidade de Lisboa. Faculdade de Arquitetura, 2016. http://hdl.handle.net/10400.5/12052.
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Guillem, Eléonore E. "Human behaviour and ecosystem services in sustainable farming landscapes : an agent-based model of socio-ecological systems." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/8751.
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Agricultural areas represent around 40% of the earth surface and provide a variety of products and services essential to human societies. However, with policy reforms, market liberalisation and climate change issues, continuous land use and cover change (LUCC) brings uncertainty in the quantity and quality of ecosystem services supplied for the future generations. The processes of LUCC have been explored using top-down approaches at global and regional level but more recent methods have focused on agents’ interactions at smaller scale. This approach is better suited to understanding and modelling complex socio-ecological systems, which emerge from individual actions, and therefore for developing tools which improve policy effectiveness. In recent years, there has also been increasing interest in gaining more detailed understanding of the impacts of LUCC on the range of ecosystem services associated with different landscapes and farming practices. The objectives of this thesis are: 1/ to understand and model the internal processes of LUCC at local scale, i.e. farmer behaviour, 2/ to explore heterogeneous farmer decision making and the impacts it has on LUCC and on ecosystem services and 3/ to inform policy makers for improving the effectiveness of land-related policies. This thesis presents an agent-based modelling framework which integrates psycho-social models of heterogeneous farmer decisions and an ecological model of skylark breeding population. The model is applied to the Lunan, a small Scottish arable catchment, and is empirically-grounded using social surveys, i.e. phone interviews and choice-based conjoint experiments. Based on ecological attitudes and farming goals, three main types of farmer agents were generated: profit-oriented, multifunctionalist, traditionalist. The proportion of farmer types found within the survey was used to scale-up respondent results to the agent population, spatially distributed within a GIS-based representation of the catchment. Under three socio-economic scenarios, based on the IPCC-SRES framework, the three types of farmers maximise an utility function, which is disaggregated into economic, environmental and social preferences, and apply the farm strategy (i.e. land uses, management style, agri-environmental measures) that best satisfies them. Each type of agents demonstrates different reactions to market and policy pressures though farmers seem to be constrained by lack of financial opportunities and are therefore unable to fully comply with environmental and social goals. At the landscape level, the impacts on ecosystem services, in particular the skylark local population, depend strongly on policy objectives, which can be antagonist and create trade-offs in the provision of different services, and on farmer socio-environmental values. A set of policy recommendations is offered that encompasses the heterogeneity of farmer decision-making with the aim of meeting sustainable targets. Finally, further improvements of the conceptual and methodological framework are discussed.
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McFarland, Kelly. "Twenty-First Century Local Food Farmers in North Texas: An Evaluation of Farming Methods, Best Practices, and Common Struggles." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1609143/.
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Research with local farmers and local food consumers in the North Texas area which captures a contemporary understanding of the challenges and successes present in North Texas local farm-and-food networks. Through ethnographic research methods, including participant-observation and semi-structured interviews, the network of producers and consumers around several farmers' markets were evaluated to understand where the strengths of local food lie, and where networks need development to promote a more stable local food environment. Texas is newer to the trend of farmers' market development, with the local food system developed to foster community, educate, and promote the advantages of locally sourced goods. This research led to the academic discovery of climate adaptive ecological knowledge and farm commodification strategies; which are tools that farmers may use to build greater defense against threats to a farm's livelihood.
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Alqaisi, Othman [Verfasser]. "Nutritional, ecological, and economic evaluation of dairy farming systems and feeding strategies in semi-arid environments / Othman Alqaisi." Kiel : Universitätsbibliothek Kiel, 2013. http://d-nb.info/1036406253/34.
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Yang, Chengzhi. "Soil fertility effects on yield, pests, weeds and symbionts of fababean (Vicia faba L.) in ecological farming systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq24787.pdf.
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Green, Laura. "Assessing the nature of early farming in Neolithic western Asia : a functional ecological approach to emerging arable weeds." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:09a905ab-e375-4d45-bc27-d12cc21e9451.
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Research on the origins of agriculture in western Asia has placed great emphasis on the location and pace of domestication. However, much less attention has been given to reconstructing the specific nature and social implications of early cultivation practices across the agricultural transition, and to the potentially varied land management strategies involved. By employing a functional ecological approach to the interpretation of arable 'weed' taxa associated with early cultivars, this research addresses this gap in archaeobotancial research by enabling detailed analysis of the growing conditions and farming methods involved in early plant cultivation in western Asia. The core methodology analyses the functional ecological attributes (e.g. leaf area and thickness; canopy dimensions; stomatal density and distribution) of the relevant arable weed taxa isolated from archaeological contexts to determine the specific growing conditions of early crops and hence the nature of management practices. Functional attributes are morphological or behavioural characteristics that predict species' potential in relation to major environmental variables, such as soil productivity, disturbance and moisture. Statistical analysis incorporating these attributes is used to explore variation amongst early cultivation contexts and compare them with weed survey data from contrasting (semi-)arid modern regimes, including a recent study of traditional cereal farming in Morocco. Ecological 'signatures' were determined using the isolated weed dataset from four well documented and contextually rich Pre-Pottery and Pottery Neolithic sites, which were strategically selected to explore agricultural strategies from its initial stages through to the established Neolithic, as well as to exploit detailed sample-by-sample data and extensive in situ deposits. The sites investigated are PPNA Jerf el-Ahmar and PPNA/EPPNB Dja'de in northern Syria, PPNB Tell Aswad in southern Syria, and PPN-PN Çatalhöyük in Central Anatolia. Refined identification of selected weed genera at these sites enabled more accurate indications of their arable ecologies. The results generated suggest that early farming practices were highly variable within sites, reflecting the specific affordances of local climate and surrounding landscapes, but relatively labour-intensive in comparison with later urban agrosystems. Furthermore, there are indications for greater cultivation intensity over time, as households became more autonomous.
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McGreevy, Steven R. "Revitalizing Sustainable Socio-ecological LandscapesAn Examination of Organic Farming, Renewable Energy, and Carbon Sequestration Activities in Rural Japan." Kyoto University, 2012. http://hdl.handle.net/2433/158085.
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Kyoto University (京都大学)0048
新制・課程博士
博士(農学)
甲第17067号
農博第1950号
新制||農||1004(附属図書館)
学位論文||H24||N4706(農学部図書室)
29787
京都大学大学院農学研究科生物資源経済学専攻
(主査)教授 末原 達郎, 教授 栗山 浩一, 准教授 秋津 元輝
学位規則第4条第1項該当
21
Askew, Hannah. "Farmers' local ecological knowledge in the biotech age : a multi-sited ethnography of fruit farming in the Okanagan Valley." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99572.
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In this Master of Arts Thesis in Anthropology I examine the controversy in the Okanagan Valley over the introduction of GM seed technologies into local agricultural processes. I explore via a multi-sited ethnography how local fruit farmers in this region view GM seed technologies and their perception of how these technologies will impact their farming practices. I argue that (a) the use of GM seeds as currently regulated in Canada threatens to erode farmers' local knowledge of plant breeding and that (b) this erosion is of consequence not only to local farmers but to society generally because the environmental knowledge and skills possessed by local farmers is crucial to the protection of biodiversity, environmental sustainability, and food security.
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Vasiliauskaitė, Ieva. "Piktžolėto lauko pakraščio įtaka agrofitocenozės segetinės floros kiekiui ir botaninei sudėčiai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2005. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2005~D_20050622_144614-72411.
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The conception of environmental quality is common used in our society. Ecological farming is one of the most quality orientated agricultural system. The experiment was conducted in the Kazliskiai ecological farm of Lithuanian University of Agriculture. There were different kind of investigation determined earlier on the farm, but there were no investigation made on the influence of weedy trench to winter-wheat field. The aim of this work is to determine how weedy trench influences segetic flora and its botanical structure in winter- wheat agrophytocenozis. The tasks, which help to gain the aim: 1. To analyze how the amount of weeds change receding from weedy trench; 2. To analyze how the botanical structure of weeds change receding from weedy trench; 3. To evaluate interrelationship between amount of weeds and their botanical structure due to weedy trench. The object of the research work – the winter-wheat field segetic flora of Kazliskiai ecological farm. The following methods were used in this work: • The analysis of scientific literature; • The calculation of segetic flora amount and its botanical structure in workspaces; • The statistical analysis using EXCEL, DISPERS programs. The results of this work show: The weedy trench has a positive influence on the amount of segetic flora. It is 2-4 times bigger nearby weedy trench than in the middle of the field. The botanical structure changes only in autumn but not numerously.
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Brierley, Errol Noel. "The Problem of Sustainable Development: The case of the Saldanha Bay community mussel farming project." University of the Western Cape, 2003. http://hdl.handle.net/11394/7318.
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Magister Administrationis - MAdminExisting literature offers various definitions of sustainable development, yet very few efforts have thus far been made to move specific communities to such a state of development. Popularised by the Brundland report, the concept of sustainable development is understood to be that which "meets the needs of the present without compromising the ability of the future generations to meet their own needs". However, the abstract concept of sustainable development raises various of questions concerning, for example, intergenerational implications of patterns of resources use and equitable resource allocations as highlighted in this study. This research indicates that the principles of sustainable development posed a veritable challenge to development projects. Hence, the confusion surrounding the concept, often leads to disagreement and misunderstanding in the demarcation of specific projects.
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O'Meara, Nathaniel, and Richard W. Stoffle. "Mrs. Bodie and Island Life: A Short Story of Fishing, Farming and Bush Medicine in the Exuma Cays, Bahamas- As told by Ester Mae Bodie." Bureau of Applied Research in Anthropology, University of Arizona, 2007. http://hdl.handle.net/10150/292602.
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This document is an oral history of Ester Mae Bodie, one of the Exumas’ renowned plant experts. During the Bahamas Marine Protected Area Study, members of Richard Stoffle’s research team spent numerous hours interviewing Mrs. Bodie a range of topics including ethnobotany, traditional marine use, the proposed MPAs, and her life growing up in the Exumas. In order to honor her contributions to the overall project, members of the Stoffle team constructed this document to share her story.
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Vorster, Halina Johanna. "The role and production of traditional leafy vegetables in three rural communities in South Africa." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-02122009-115129/.
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de, la Torre-Castro Maricela. "Humans and Seagrasses in East Africa : A social-ecological systems approach." Doctoral thesis, Stockholm University, Department of Systems Ecology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1061.
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The present study is one of the first attempts to analyze the societal importance of seagrasses (marine flowering plants) from a Natural Resource Management perspective, using a social-ecological systems (SES) approach. The interdisciplinary study takes place in East Africa (Western Indian Ocean, WIO) and includes in-depth studies in Chwaka Bay, Zanzibar, Tanzania. Natural and social sciences methods were used. The results are presented in six articles, showing that seagrass ecosystems are rich in seagrass species (13) and form an important part of the SES within the tropical seascape of the WIO. Seagrasses provide livelihoods opportunities and basic animal protein, in from of seagrass associated fish e.g. Siganidae and Scaridae. Research, management and education initiatives are, however, nearly non-existent. In Chwaka Bay, the goods and ecosystem services associated with the meadows and also appreciated by locals were fishing and collection grounds as well as substrate for seaweed cultivation. Seagrasses are used as medicines and fertilizers and associated with different beliefs and values. Dema (basket trap) fishery showed clear links to seagrass beds and provided the highest gross income per capita of all economic activities. All showing that the meadows provide social-ecological resilience. Drag-net fishery seems to damage the meadows. Two ecological studies show that artisanal seaweed farming of red algae, mainly done by women and pictured as sustainable in the WIO, has a thinning effect on seagrass beds, reduces associated macrofauna, affects sediments, changes fish catch composition and reduces diversity. Furthermore, it has a negative effect on i.a. women’s health. The two last papers are institutional analyses of the human-seagrass relationship. A broad approach was used to analyze regulative, normative and cultural-cognitive institutions. Cooperation and conflict take place between different institutions, interacting with their slow or fast moving characteristics, and are thus fundamental in directing the system into sustainable/unsustainable paths. Ecological knowledge was heterogeneous and situated. Due to the abundance of resources and high internal control, the SES seems to be entangled in a rigidity trap with the risk of falling into a poverty trap. Regulations were found insufficient to understand SES dynamics. “Well” designed organizational structures for management were found insufficient for “good” institutional performance. The dynamics between individuals embedded in different social and cultural structures showed to be crucial. Bwana Dikos, monitoring officials, placed in villages or landing sites in Zanzibar experienced four dilemmas – kinship, loyalty, poverty and control – which decrease efficiency and affect resilience. Mismatches between institutions themselves, and between institutions and cognitive capacities were identified. Some important practical implications are the need to include seagrass meadows in management and educational plans, addressing a seascape perspective, livelihood diversification, subsistence value, impacts, social-ecological resilience, and a broad institutional approach.
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Zakarevičiūtė, Agnė. "Kėdainių rajono ūkininkų ūkių analizė." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090603_094300-90871.
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Žemės ūkis yra ir visada buvo esminė ekonomikos dalis. Taip yra visose šalyse visame pasaulyje. Daug kas siekia būti savarankiški, bet tai pavyksta ne visais atvejais. Lietuva yra šalis, apdovanota derlingomis žemėmis, be to, mes gyvename toje pasaulio dalyje, kur klimatas vis dar yra palankus žemės ūkiui. Ūkininkavimo metodai ir maisto produktų gamyba smarkiai keitėsi laikui bėgant. Susirūpinimas aplinkos apsauga ir svarstymai dėl gyvulių gerovės Lietuvoje plinta kaip ir visoje Europoje. Ekologinis ūkininkavimas - tai tausojančiosios ūkininkavimo sistemos dalis ir gyvybinga alternatyva tradiciniam ūkininkavimui. Ekologinis ūkininkavimas skiriasi nuo įprasto, nes atsisakoma sintetinių pesticidų, herbicidų, cheminių trąšų, augimą skatinančių hormonų ar manipuliavimo genais. Ekologiniai ūkiai naudoja įvairią techniką, padedančią palaikyti ekosistemas ir sumažinti taršą. Laikantis būtinų produkcijos kokybės standartų, gaunamas mažesnis pirminės produkcijos kiekis, palyginti su tradiciniu ūkininkavimu, tad išauga ekologiškos produkcijos gamybos kaštai. Augalinės produkcijos ekologiniame ūkyje pagrindas - dirvožemio struktūros ir derlingumo gerinimas. Ekologiniu būdu gali būti auginami ne tik grūdai, vaisiai bei daržovės, kopiamas medus. Galvijai ir paukščiai ekologiškai auginami, laikantis gyvulių gerovės standartų bei šeriant juos natūraliais produktais.Agriculture is and has always been an essential part of the economy. This is all the countries around the world. Many who seek to be independent, but this is not successful in all cases. Lithuania is the country awarded the fertile earth, in addition, we live in that part of the world where the climate is still favorable for agriculture. Farming methods and food production has changed over time. Concerns about environmental protection and animal welfare considerations for the spread of Lithuania and throughout Europe. Ecological farming is a part of sparing farming system and viable alternative for traditional farming. Ecological farming differs from the traditional one because this farming refuses synthetic pesticides, herbicides, chemical manure, hormones that stimulate growing or manipulate genes. Ecological farms use various techniques that help to maintain ecosystems and reduce pollution. Bearing all these necessary standards of production quality there is received smaller amount of original production in comparison with traditional farming. It causes bigger expenses of ecological production. The basis of vegetative production in the ecological farming is development of soil structure and fertility. Not only grain, fruits, vegetables and honey are received in the ecological way. Cattle and birds are grown ecologically, bearing standards of welfare of livestock, feeding them in natural products.
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Stelmokas, Svajūnas. "Įvairių trąšų įtaka ekologiškai auginamiems žieminiams rugiams." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090608_123953-09682.
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Lietuvos žemės ūkio universiteto Agroekologijos centro ekologinės gamybos ūkyje 2007-2008 m. atlikus fosforo ir kalio trąšų įtakos ekologiškai auginamiems žieminiams rugiams tyrimus nustatyta, kad didžiausias žieminių rugių derlingumas gautas tręšiant P60 fosforitmilčių norma. Didinant normą žieminių rugių derlingumas mažėjo. Lyginant fosforitmilčių normas tarpusavyje bei su netręštais žieminiais rugiais, esminių grūdų derlingumo skirtumų nenustatyta. Tręšimas fosforitmilčiais neturėjo esminės įtakos baltymų kiekiui ir tešlos kritimo skaičiui žieminių rugių grūduose bei natūriniam grūdų svoriui. Kalio trąšų formos ir normos neturėjo esminės įtakos žieminių rugių grūdų derlingumui, baltymų kiekiui ir tešlos kritimo skaičiui žieminių rugių grūduose bei natūriniam grūdų svoriui.After having performed tests, in 2007-2008 year, the different fertilizers affect with the phosphorus and potassium to ecologically grown winter rye in the ecological manufacturing farm of Agro-ecology centre of Lithuanian University of Agriculture, it was identified that the highest yields of winter rye rate with phosphorus P60 fertilization. The yields declined increasing the rate of winter rye. It was identified that the phosphorus rate compared with each other and did’t have essential influence on the grain crop of winter rye. The fertilization with phosphorus not have essential influence on the protein content of the dough and drop in the number of winter rye grain and to the natural grain weight. The potassium fertilizer forms and rates did not have essential influence on the grain yields of winter rye and protein content and drop in the number of winter rye grain and to the natural grain weight.
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Constant, Natasha Louise. "A socio-ecological approach towards understanding conflict between leopards (Panthera pardus) and humans in South Africa : implications for leopard conservation and farming livelihoods." Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10807/.
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The thesis investigates the socio-ecological factors driving human-leopard conflict due to livestock and game depredation in the Blouberg Mountain Range, South Africa. Local people’s perceptions of conservation are shaped by historical and contemporary relationships with protected areas and particularly, by conflicts of land and natural resource use. Legacies of disempowerment, marginalisation and stigmatisation manifest through people’s conservation discourses, social conflict and resistance towards protected area establishment, a process defined as traumatic nature. Traumatic nature elevates distrust of local people towards wildlife authorities and decreases support for wildlife conservation, aggravating human-leopard conflicts. Leopard predation on livestock and game is most strongly influenced by distance to village and distance to water, respectively, in addition to seasonal grazing patterns, the calving season and poor livestock husbandry practices. Livestock depredation represents significant economic costs for subsistence communal farmers’, which is exacerbated by the erosion of traditional cattle sharing systems and a lack of alternative livelihood strategies. Livestock depredation results in the loss of functional and material benefits, social capital, a spiritual resource, diminished wellbeing and perceived cultural decay. Camera trap results showed a lower leopard density of 0.7 leopards per 100km2 on commercial farms compared to the Blouberg Nature Reserve of 5.4 leopards per 100km2. Commercial farms may function as ecological traps because they represent areas with disproportionate leopard mortality that otherwise provide a high abundance of prey species for leopards. A male-biased sex ratio and a high number of sub-adult male leopards indicate high leopard mortality rates in the population. Camera trap results show low occupancy rates on communal land that may reflect a low large prey biomass, potentially caused by overhunting and habitat conversion. Farming communities ascribe a wide range of environmental values to the leopard that provide barriers and support for leopard conservation. Environmental institutions need to improve responses to reports of human-leopard conflicts and build trust and legitimacy in the eyes of local people by developing stronger working relationships with farming communities. The decentralisation of authority to local government actors to manage human-leopard conflicts and the devolution of responsibility to farmers to improve livestock husbandry practices is necessary to reduce depredation incidents. Incentive and education schemes are important for reducing lethal control measures and to improve tolerance of depredation incidents and leopard conservation.
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McGuire, Mary R. "Tobacco Culture and Environmental Consciousness: Ecological Change, Race, and Gender, Prince Edward County, Virginia, 1850--1870." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/1515.
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The purpose of this thesis is to examine through the lenses of an environmental historian the myths and the realities of soil exhaustion as this ecological process relates to the developing environmental ethics of tobacco farmers of Prince Edward County, Virginia, from 1850 to 1880. During the nineteenth century the tobacco farms of Southside Virginia experienced three phases in a century long process of ecological change that both influenced and were influenced by events that occurred in human history. The first phase coincides with the agricultural reform movements led by the planters of the late antebellum period. The second phase spans the Civil War years. The third phase begins with emancipation and Reconstruction and lasts until the end of the century when the cause of scientific agriculture was taken up by the agricultural reformers of the Progressive era. With each phase of ecological transition in conjunction with the transition from slave labor to wage labor, the relationship of white men and women and African American men and women to the rural landscape changed, thus creating a diverse, dynamic environmental ethic among the tobacco farmers of Prince Edward County, Virginia.
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Fernández, Andrés Javier. "Can urban agriculture become a planning strategy to address social-ecological justice?" Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217000.
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Last century witnessed an unprecedented growth of cities which has led to the consolidation of an eminently urbanised world population. Meanwhile, agriculture has adopted industrial methods of production in the shape of large-scale, chemical-laden crops in the countryside, which, together with the liberalisation of global trade, have undermined the livelihood of small-scale peasants throughout the world, forcing many of them out of business. The food industry has responded to the high rates of hunger and malnutrition with an extraordinary increase in production that has not solved food security problems, as these have turned out to be more a question of unequal access to food rather than insufficient supply. Furthermore, the activity of large agri-food corporations has resulted in the degradation of natural ecosystems and an increasing pressure over already overburdened critical resources for food production. Consequently, facing the imminent threat of climate change, more and more voices are questioning the sustainability of the current food system and rising against the burgeoning hunger and escalating inequalities resulting from it. Hence, several alternatives to the neoliberal food system are emerging these days with the aim of reducing social inequalities and curbing environmental degradation, being urban agriculture one of them. Precisely, this thesis explores, from a social-ecological justice perspective, whether urban agriculture can address issues of environmental stewardship and disparities in food distribution. Although the many virtues of urban farming might not be enough to subvert the structures of power that are deeply rooted in the foundations of the present food regime, it could still play a significant role in alleviating the gaps in food needs. However, food security comes only after the core reasons of poverty have been addressed and social justice is achieved in the larger society. The pathway towards a greater social and ecological justice seems to require not only to re-examine how to feed the urban population, but also a significant transformation that goes beyond aspects from the whole food supply chain and embraces societal systemic change.
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Derakhshani, Nava. ""God has locked the sky" : exploring traditional farming systems in Tigray, Ethiopia." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/97123.
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Thesis (MPhil)--Stellenbosch University, 2015.ENGLISH ABSTRACT: The Tigray region in northern Ethiopia is a historic centre of agricultural production and home to many subsistence farmers that still use traditional farming systems and practise rain-fed agriculture. The region has been affected adversely by famines and periodic droughts for centuries and is vulnerable to climate change. Farmers are producing on small plots of often degraded land and through their own actions have depleted the natural resources they rely on, in particular soil, water and trees. This study sought to explore the environmental degradation of Tigray through both a literature review of its agricultural socio-political history and a lived experience in the village of Abraha We Atsebaha among farmers of the region. It uses a variety of methodologies and methods, including a literature review, grounded theory, narrative inquiry and ethnography, to expand on the factors that have contributed to the current degradation, the implications for traditional farming and the potential for land regeneration. The first journal article seeks to explore how Ethiopians have shaped their natural environment. In particular, it focuses on deforestation, soil degradation, the role of changing governance and land-ownership patterns, and the effects of climate change. The article demonstrates that traditional farming systems do not operate in isolation from their socio-political and environmental context. The second journal article provides an in-depth narrative inquiry conducted in Abraha We Atsebaha over a three-month period in 2014. This village is known for its indigenous farming knowledge, commitment to regeneration and innovation in conservation practices. Interviews were conducted with selected farmers and local leaders and informal discussions were carried out with government extension representatives using the ethno-ecological cosmos-corpus-praxis guidelines to enable an integrated exploration of the nature of traditional farming, the causative factors of environmental deterioration and the resultant communal response. In addition to written interview notes, observations and field notes were recorded daily. Photographs are used to give a real sense of the community and their work. It emerged during this process that underlying belief systems were exceptionally important in a context of traditional conservation. Both articles discuss the development work undertaken by government in the rural farming sector and the successes and challenges faced. They also show that elements of traditional farming, sustainability measures and environmental care were suspended in favour of short-term survival as a consequence of social, political and population stressors. This study provides learning points, gained from insights gleaned from the literature review and the lived experience, for improving development interventions in this region. This study did not explicitly explore the role of religion in conservation or the potential long-term effects of current government policies and initiatives. However, it contributes to the small pool of literature on the region focused on traditional farming systems by providing a comprehensive overview of the drivers of degradation (historical and current) and offers a unique, “soft” experiential narration of a village in northern Ethiopia that allows insight into farmer experiences, pressures and adaptation efforts.
AFRIKAANSE OPSOMMING: Die Tigray-streek in die noorde van Ethiopië is ’n historiese sentrum van landbouproduksie en die tuiste van menige bestaansboer wat nog op tradisionele boerderystelsels en reënbesproeiing staatmaak. Die streek het eeue lank onder hongersnood en periodieke droogtes gebuk gegaan en is kwesbaar vir klimaatsverandering. Boere bewerk klein stukke, dikwels afgetakelde, grond en het deur hul eie optrede die natuurlike hulpbronne waarop hulle staatmaak – veral die grond, water en bome – uitgeput. Hierdie studie was daarop toegespits om ’n beter begrip te vorm van die omgewingsaftakeling in Tigray. Vir hierdie doel is ’n literatuurstudie van die sosiopolitieke landbougeskiedenis van die gebied onderneem, en is die lewe in die dorp Abraha We Atsebaha tussen boere van die streek ervaar. Die navorsing het van ’n verskeidenheid metodologieë en metodes, waaronder ’n literatuuroorsig, gegronde teorie, narratiewe ondersoek en etnografie, gebruik gemaak om lig te werp op die faktore wat tot die huidige aftakeling bygedra het, die implikasies vir tradisionele boerdery, en die potensiaal vir grondvernuwing. Die eerste tydskrifartikel verken hoe Ethiopiërs hul natuurlike omgewing gevorm het. Dit konsentreer veral op ontbossing, grondaftakeling, die rol van veranderende staatsbestuurs- en grondbesitpatrone, en die uitwerking van klimaatsverandering. Die artikel toon dat tradisionele boerderystelsels nie afsonderlik van hul sosiopolitieke en omgewingskonteks funksioneer nie. Die tweede tydskrifartikel beskryf ’n narratiewe diepte-ondersoek wat oor ’n drie maande lange tydperk in 2014 in Abraha We Atsebaha onderneem is. Hierdie dorp is bekend vir sy inheemse landboukennis, toewyding aan vernuwing, en innoverende bewaringspraktyke. Onderhoude is met ’n uitgesoekte groep boere en plaaslike leiers gevoer, en voorligtingsbeamptes van die staat is by informele gesprekke betrek. Die etno-ekologiese cosmos-corpus-praxis-riglyne is gebruik om ’n geïntegreerde studie te onderneem van die aard van tradisionele boerdery, die oorsaaklike faktore van omgewingsaftakeling, en die gevolglike gemeenskapsreaksie. Benewens skriftelike aantekeninge gedurende die onderhoude, is waarnemings en veldnotas ook daagliks opgeteken. Foto’s word gebruik om die gemeenskap en hul werk getrou uit te beeld. Gedurende hierdie proses het aan die lig gekom dat onderliggende oortuigingstelsels besonder belangrik is in ’n tradisionele bewaringskonteks. Albei artikels bespreek die ontwikkelingswerk wat die regering in die landelike boerderysektor onderneem, sowel as die suksesse en uitdagings daarvan. Dit toon ook dat elemente van tradisionele boerdery, volhoubaarheidsmaatreëls en omgewingsorg as gevolg van maatskaplike, politieke en bevolkingsfaktore laat vaar is ten gunste van korttermynoorlewing. Die insigte wat uit die literatuuroorsig sowel as die lewenservaring in die bestudeerde gemeenskap spruit, bied lesse vir die verbetering van ontwikkelingsintervensies in die streek. Die studie het nie uitdruklik die rol van godsdiens in bewaring of die potensiële langtermynuitwerking van huidige staatsbeleide en -inisiatiewe ondersoek nie. Tog dra dit by tot die klein hoeveelheid beskikbare literatuur oor tradisionele boerderystelsels in die streek deur ’n omvattende oorsig te bied van die (historiese en huidige) snellers van aftakeling, en vertel dit ’n unieke, ‘sagte’ ervaringsverhaal oor ’n dorp in die noorde van Ethiopië om sodoende insig in landbou-ervarings, -druk en -aanpassingspogings te bied.
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Arvidsson, Jesper. "The Farm : A new urban condition." Thesis, KTH, Arkitektur, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-96699.
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The Farm is a speculative proposal for a self sustainable city block where as much food is produces as is consumed by it’s inhabitants. It is utilising the potential that arise when the greenery of farming is brought in to the cities in creating a new hybrid that blends with the city fabric with the aim of contributing to the areas multiplicity and vibrant life. The aim of the project has been that through architecture design; study the possibility to go from a throughput society, where everything we consume is produced outside of the community, to a society that produces what it consumes within the community in a cyclical integrated sustainable way. Can we produce what we consume with in a city and what happens when the production, which in this case is the cultivation of crops and plants, merge with the existing city fabric? What happens if the cultivation is combined with a traditional apartment program and what does it become? Can the programs thrive together in symbiosis or will one of the programs become a parasite of the other? How does the vast open spaces required for farming relate to the small intimate spaces suitable for living spaces? What is their interrelationship, how do they effect each other?
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Eriksson, Ylva. "Biologisk mångfald bland åkerogräsen. En fältstudie av två åkrar : en konventionellt och en ekologiskt odlad." Thesis, Linköping University, Department of Thematic Studies, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2310.
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Den biologiska mångfalden är viktig inom lantbruket. Jordbrukslandskapets mångfald är vacker för människan att se på och spännande och rogivande att vistas i. Mångfalden innehåller även en genbank som kan bli mycket etydelsefull i framtiden. Dessutom innebär oftast en rik mångfald bland ogräsen även en rik mångfald bland insekter och andra djur, däribland skadeinsekternas predatorer, vilket bidrar till produktiva åkrar. Ogräsens mångfald på åkern beror till stor del på geografiskt läge, klimat och berggrund. Även odlingssättet och tillhörande odlingsåtgärder är avgörande för hur åkerns ogräsflora ser ut. En odlingsåtgärd som har ett stort inflytande över ogräsflorans sammansättning, är användningen, eller uteslutandet, av herbicider.
Uppsatsens fältstudie består av ogräsinventeringar genomförda på två åkrar – en konventionellt odlad och en ekologiskt odlad. Den konventionella åkern är behandlad med syntetiska herbicider och den ekologiska är det inte. Studien visar att den ekologiska åkern hade fler arter, en rikligare mångfald, och många fler plantor än den konventionella åkern. Artsammansättningen tyder på att den konventionella åkern var något mer näringsrik och hade ett lägre pH.
Biological diversity is important in agricultural systems. The diversity of the agricultural landscape is beautiful to the human eye and it provides an exciting as well as soothing environment. Diversity also denotes genetic resources that can be of great importance in the future. Furthermore, a high biological diversity of weeds most often means a high diversity of insects and other animals, among them the predators of pests, which contributes to high productivity of the arable fields. The diversity of weed in a field depends on its geographical location, the climate and the bedrock. Other factors of great importance to the composition of the weed flora are the farming methods (conventional/ecological) and the specific measures used. One measure that has a high influence on the composition of the weed flora is the use, or exclusion, of herbicides.
The field study of this paper consists of weed inventories of two arable fields – the first cultivated per traditional methods and the second per ecological methods. Herbicides are used in the conventional field but not in the ecological one. The study shows that the ecological field had more secies, a greater diversity, and far more plants than the conventional field. The composition of the weed species indicates that the conventional field had a slightly higher nutritive value and a lower pH value.
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Shelembi, Musa Nkuba [Verfasser], Bernd [Akademischer Betreuer] Siebenhüner, and Stefanie [Akademischer Betreuer] Sievers-Glotzbach. "Commercial farming models, smallholder farmers’ choices and sustainability in the highlands agro-ecological zone in Njombe District, Tanzania / Musa Nkuba Shelembi ; Bernd Siebenhüner, Stefanie Sievers-Glotzbach." Oldenburg : BIS der Universität Oldenburg, 2020. http://d-nb.info/1211724514/34.
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Shelembi, Musa Nkuba [Verfasser], Bernd Akademischer Betreuer] Siebenhüner, and Stefanie [Akademischer Betreuer] [Sievers-Glotzbach. "Commercial farming models, smallholder farmers’ choices and sustainability in the highlands agro-ecological zone in Njombe District, Tanzania / Musa Nkuba Shelembi ; Bernd Siebenhüner, Stefanie Sievers-Glotzbach." Oldenburg : BIS der Universität Oldenburg, 2020. http://d-nb.info/1211724514/34.
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Noga, Audrey. "Nature itself as our guide : A resilience perspective on permaculture and an empirical investigation of its use in three case studies in British Columbia, Canada." Thesis, Stockholms universitet, Stockholm Resilience Centre, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-78983.
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In general, small farms have significant social and ecological advantages over industrialized large farms. However, a combination of complex pressures is making it difficult for many small-scale farmers to stay in business – including in Canada, where this thesis is focused. The consequential loss of many small farms results in a general loss of diversity and a decreased flexibility for future options for food procurement for many communities. Creating more and increasingly sustainable options for food procurement is progressively more important in the face of rising food and fuel prices, degradation of ecosystem services, and the increase of extreme climate fluctuations. For these and other reasons, creating social-ecological resilience in small farming systems is key to ensuring more options for long-term food procurement.Permaculture – the design and maintenance of agriculturally productive ecosystems based on the patterns and relationships found in natural ecosystems – has been identified in the literature as a potential tool to build social-ecological resilience in small scale farming systems. This study evaluates permaculture from a resilience perspective, and compares the analysis to permaculture use on three farms in British Columbia (BC). This has been done in order to understand whether or not the practice contributes to the social-ecological resilience of the small farming systems in which it is used, and if so, how.Results imply that permaculture use does in fact increase social-ecological resilience of small farms by encouraging ecological, social and economical diversity – creating buffer zones that allow for flexibility and augmented future options for the farm and also potentially for the community in which the farm operates. It has been shown that the key actors in each case study fundamentally place a strong emphasis on the importance of human and environmental health – while recognizing the need to address the interrelated nature of social and ecological issues. A strong social connection in the local community and connections in the global community are of high importance because of the support provided to actors, and diverse sources of income that are related to the structure of the farm are also shown to be key elements in each case. It would be valuable for continuing study to aim to uncover how permaculture can be used on a larger scale without loosing its social and ecological benefits.
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Ghanawi, Joly Karim. "Direct and indirect ecological interactions between aquaculture activities and marine fish communities in Scotland." Thesis, University of Stirling, 2018. http://hdl.handle.net/1893/27258.
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Presence of coastal aquaculture activities in marine landscapes is growing. However, there is insufficient knowledge on the subsequent ecological interactions between these activities and marine fish communities. The overall aim of this thesis was to evaluate the direct and indirect ecological effects of aquaculture activities on marine fish communities in Scotland. A combination of empirical and modelling approaches was employed to collect evidence of how aquaculture activities affect marine fish communities at the individual, population and ecosystem levels around coastal sea cages. The two fish farms evaluated in this research provided the wild fish sampled near the sea cages with a habitat rich in food resources which is reflected in an overall better biological condition. Results of the stomach content analysis indicated that mackerel (Scomber scombrus), whiting (Merlangius merlangus) and saithe (Pollachius virens) sampled near sea cages consumed wasted feed which was also reflected in their modified FA profiles. The overall effects of the two fish farms were more pronounced in young whiting and saithe than in mixed aged mackerel sampled near the sea cages. The phase space modelling approach indicated that the overall potential for fish farms to act at the extremes as either population sources (a habitat that is rich in resources and leads to an overall improved fitness) or ecological traps (a habitat that appears to be rich in resources but is not and leads to an overall poor fitness) are higher for juvenile whiting than for mackerel. Based on the empirical evidence and literature the two fish farms are more likely to be a population source for wild fishes. Using an ecosystem modelling approach indicated that fish farming impacts the food web in a sea loch via nutrient loading. Mussel farming relies on the natural food resources and has the potential to affect the food web in a sea loch via competing with zooplankton for resources which can affect higher trophic levels. The presence of both activities can balance the overall impact in a sea loch as compared to the impact induced if each of these activities were present on their own. Both activities have the potential do induce direct and indirect effects on the wild fish and the entire sea loch system. The results of this PhD identified several gaps in data and thus could be used to improve future sampling designs. It is important to evaluate the cumulative effect of the presence of aquaculture activities in terms of nutrient loading and physical structure in the environment. Using a combination of empirical and modelling approaches is recommended to gain further insight into the ecological impacts of aquaculture activities on wild fish communities. Results of this PhD study could lead to more informed decisions in managing the coastal aquaculture activities. Establishing coastal fish farms as aquatic sanctuaries can be of an advantage to increase fish production and conserve species that are endangered provided that no commercial and recreational fishing is allowed nearby. It would be useful to have long term monitoring of the fish stocks around the cages and if there is any production at the regional level. Additionally, information on behaviour, migration patterns should be collected to understand the impacts of aquaculture activities on fish stocks. From an aquaculture perspective, ecologically engineered fish farms in addition to careful site selection in new aquaculture developments may improve nutrient loading into the ecosystem.
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Lilliesköld, Sjöö Gustaf. "Macroalgae in tropical seascapes : regulating factors and functions in the coastal ecosystem." Doctoral thesis, Stockholms universitet, Systemekologiska institutionen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-45951.
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Although macroalgae usually are inconspicuous on pristine coral reefs, they often thrive on reefs that are subjected to various types of anthropogenic disturbance. This thesis consists of five papers and investigates how biomass and composition of macroalgal communities on coral reefs are affected by regulating factors, such as nutrient availability, herbivory, substrate availability and hydrodynamic forces. In addition, ecological functions and potential impacts of both wild and farmed macroalgal communities are evaluated. Paper I describes a method for using macroalgal tissue nutrient concentrations as bioindicator for nutrient availability, with the possibility to map nutrient loading from larger coastal cities. Papers II and III are manipulative studies comparing top-down and bottom-up regulation of macroalgal communities, where herbivore consumption seems to be the main regulator of biomass whereas nutrient availability mainly influences community composition. Exclosure of large-bodied herbivores had a positive influence on algal biomass in both studies, and during different climatic periods. Paper III also includes the influence of hydrodynamic forces on algal community biomass and structure by comparing a reef crest and a back reef-habitat. Alterations of top-down and bottom-up regulation generally had a stronger effect within the protected back reef-habitat, suggesting that such environments may be more sensitive to anthropogenic influence. Paper IV confirms the general conclusions from papers II and III by studying macroalgal biomass and composition on reef sites with different environmental prerequisites. This study also supports the notion that herbivorous fish can suppress accumulation of macroalgal biomass if substrate availability is low, but not where coral cover is reduced and plenty of substrate is open to macroalgal colonization. The study also found a large temporal variation of macroalgal standing stock and associated nutrients at sites with low top-down regulation. Paper V evaluates potential impacts of seaweed farming on coral reefs and nutrients in the seascape by experimentally studying growth, survival and nutrient binding capacity of Eucheuma denticulatum. This study showed that seaweed farms counteract eutrophication through nutrient extraction and that the risk of farmed algae colonizing local reefs seems to be small as they were rapidly consumed. In conclusion, the studies in this thesis contribute to the understanding of macroalgal regulation and function in tropical seascapes, thereby adding to the knowledge base for coastal management.At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: Manuscript. Paper 4: Manuscript. Paper 5: Manuscript.
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Alarcón, Eddy. "Biodiversity of Insects from the Syrphidae and Carabidae Families in Three Ecological Niches (Forest, Forest Boarder, and Farming Area) in Three Communities of the Coroico Municipality, Nor Yungas, La Paz." BYU ScholarsArchive, 2008. https://scholarsarchive.byu.edu/etd/5327.
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Today, biodiversity is one of the most studied disciplines because it encompasses all species of plants, animals, and microorganisms that exist and act within an ecosystem. In recent decades, biodiversity has been degrading rapidly due to the simplification of agricultural systems, and the irrational use of pesticides that alter the normal function of ecosystems. Within nature, each insect population is attacked by one or more natural enemies. In this investigation, during a six month period from June to December 2006, the biodiversity of predatory insects from the syrphidae and carabidae families was determined in three ecological niches of three communities with two posed risks (Malaise and Pitfall) for the Carabidae family and one (Malaise) for the Syrphidae family. This investigation presents the differences in composition of morphospecies from three ecological niches in three communities of the yungas of La Paz. In total, we recorded 67 morphospecies from the Carabidae family in a population of 1107 individuals and 38 morphospecies from the Syrphidae family in a population of 1333 individuals. From the data above, it was found that the most diverse community was San Juan de la Miel with 33 morphospecies from the Syrphidae family and 42 morphospecies from the Carabidae family. However, in the case of the Syrphidae family, a smaller quantity of individuals found were related to the other communities whereas in the case of the Carabidae family, a larger quantity of individuals found were related. The similarity indices show only around 8-15% between the different ecological niches and communities which is relatively low and indicates that dominant species exist in these ecological niches, whether in the forest or in cultivated areas. The Carabids are insects similar to beetles, coming in varied sizes and colors, with dark and bright metallic colors being the most prominent. The family contains between 20,000 and 30,000 known species. The Syrphids are similar to dipterous insects, coming in different sizes and colors. Generally, black and yellow, or a combination of both similar to bees, are the most predominant colors. The family contains around 5,400 known species. The Carabids and Syrphids are very important in the biodiversity of ecosystems as well as in ecology because they regulate the pest populations through predation. In addition, when they are adults, they pollinate crops thus reducing the use of petrochemical insecticides. The area studied has a good diversity of species due to the geomorphology of the site. It has small patches of crops and fallow land surrounded by forests that allow the maintenance of its diversity, which is very important for the balance of ecosystems.
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Chang, Chullee. "Ökologischer Landbau in Südkorea." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2005. http://dx.doi.org/10.18452/15158.
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Ökologischer Landbau hat insbesondere in den vergangenen zwanzig Jahren weltweit an Bedeutung zugenommen. Im Zusammenhang mit Ernährungssicherung, ressourcenschonender Landwirtschaft und Umweltschutz ist die Entwicklung und Förderung dieses Bewirtschaftungssystems in vielen Ländern der Erde auf der Agenda. Landwirte, Verbraucher und Politiker verbinden damit die Hoffnung, Landnutzung nachhaltiger betreiben zu können und durch die Kenntnis der naturwissenschaftlichen Zusammenhänge, den Umgang mit pflanzlichen und tierischen Organismen in der landwirtschaftlichen Produktion wesensgemäßer gestalten zu können. Gleichzeitig entsprechen sie damit der Forderung von Konsumenten nach gesunden, nicht belasteten Lebensmitteln und einer intakten Umwelt. Obwohl wir weltweit die Einführung und Etablierung des Bewirtschaftungssystems ökologischer Landbau beobachten können, ist festzustellen, dass die Gründe, Wurzeln und Erscheinungsformen in den einzelnen Ländern unterschiedlich sind. Deshalb sind länderspezifische Analysen und Bewertungen notwendige Beiträge zur Theoriebildung zum ökologischen Landbau. In diesen Kontext ist die vorliegende Arbeit zu stellen. Gegenstand der Arbeit war die Analyse des gegenwärtigen Entwicklungsstandes des ökologischen Landbaus in Südkorea in den Bereichen, wie Entwicklungsgeschichte, Konzeptionen, Institutionen, Produktion und Vermarktung sowie Zertifizierung und Förderungspolitik. In einer Fallstudie wurden ausgewählte ökologisch (Yuki)-wirtschaftende Betriebe analysiert. Es werden damit Lösungsansätze zur Weiterentwicklung des ökologischen Landbaus in Südkorea dargestellt.Organic farming has increased in meaning world-widely in particular in the past two decades. In relation to securing food supply, resource-preserving farming and environmental protection are the development and promotion of this management system in many countries on the agenda. Organic farming made it possible that farmers, consumers and politicians hope to manage land in a sustainable way, and achieve the handling of vegetable and animal organisms in the agricultural production in a suitable way. At the same time it corresponds to the need of con-sumers for healthy, not polluted food and intact environment. Although we can observe the introduction and establishment of the management system of organic farming in many countries, it needs to specify that that the reasons, roots and manifestations of organic farming in each country are different. Therefore, individual analysis and evaluation for each country necessarily contribute to build their own theory of organic farming. This work has to be viewed in this respect. The purpose of this work is to clarify: - the basic conditions of the organic farming in South Korea, - the practical change of organic farming based on the case study of organic rice cultivation and - the ideas for developing strategy of organic farming in South Korea.
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Cicconeto, Joana. "A diversidade e a emergência da agricultura familiar ecológica em Canguçu (RS) : percepções, estratégias e discursos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/35434.
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Este estudo visa identificar e analisar as percepções, as motivações e as estratégias dos agricultores “não convencionais” de Canguçu, Rio Grande do Sul, na condução de seus sistemas de produção “diferentes”. O município, considerado a Capital Nacional da Agricultura Familiar, conta com aproximadamente 10.000 estabelecimentos agropecuários com área média de 16ha. As características do meio favoreceram um processo de modernização da agricultura incompleto, o que significa dizer que a modernização não atingiu todos os estabelecimentos rurais da mesma forma, embora ocorram distintas razões. Esses diferentes “níveis” de modernização representam diferentes relações com o mercado e com a utilização de tecnologias, gerando dessa forma, diferentes estilos de agricultura. A abordagem dos estilos trata-se de referência analítica para a compreensão das diferentes formas de conduzir a agricultura. Contudo, as razões pelas quais os agricultores agregam-se a um estilo ou outro, conduz a olhares específicos, de como é elaborado o conhecimento, no seu processo de transição. O trabalho de campo, baseado na coleta de dados obtidos por meio de entrevistas semiestruturadas, diário de campo e observações, possibilitou identificar as distintas denominações desses agricultores. Esses dados foram organizados com auxílio do software QSR NVivo 8.0, para realizar a análise dos dados (de conteúdo). Identificou-se que a tomada de decisão do agricultor convencional ou tradicional, para outro sistema produtivo pautado no manejo “ecológico” pode ter diferentes pontos de partida, todavia também mostrar vínculos com diferentes momentos de expansão do movimento, então denominado “alternativo”. As transições podem acontecer decorrentes de necessidades impostas pelas características do meio, da percepção do aperto causado pelo aumento dos custos e da redução nos lucros, por uma incapacidade econômica ou um isolamento geográfico. Bem como, pelas influências das ações externas à propriedade, como a invenção do ecológico, que faz emergir novas oportunidades de nichos de mercado, exigindo produtos certificados. Diferentes condições geram uma variedade de situações observáveis para este estilo de agricultura ecológico. Há entre estes agricultores, uma diversidade significativa no que tange as relações sociais e sociedade-natureza, assim como nas suas trajetórias como produtores ao longo do tempo.This study aims to identify and analyze the perceptions and motivations of unconventional farmers from Canguçu, Rio Grande do Sul, in conducting "different" production systems. The city, considered to be the Family Farm National Capital has approximately 10,000 agricultural establishments with an average area of 16 hectares. Medium characteristics favored an incomplete agricultural modernization process, which means that modernization did not reach all rural establishments in the same way, although there are distinct reasons. These different "levels" of modernization represent different relationships with the market and use of technology, thus generating different styles of agriculture. The styles farming theory is an analytical reference for understanding the different ways of conducting agriculture. Furthermore, the reasons why farmers join one style or another leads to specific perspectives to how knowledge is produced in its transition process. Field work, based on data collected through interviews, field diary and observations enabled the identification of the different denominations of these farmers. These data were organized by using QSR NVivo 8.0 software to run the data analysis, concerning their content. It was identified that the farmer's decision, whether conventional or traditional, to another system production, based on “green” management, can follow different starting points, but also can show links to different periods of movement expansion, then called "alternative". Transitions can occur due to needs imposed by the medium characteristics; the perception of tightness caused by increased costs and reduced profits; an economic inability or a geographic isolation. In addition, they can be caused by the influences of actions external to the property, as the invention of the “green” that brings out new opportunities for niche markets by requiring certified products. Different conditions produce a variety of situations observed for this “green” agriculture style. There are among these farmers a significant diversity regarding social and society-nature relationships, as well as in their trajectories as producers over time.
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Gao, Ze. "Organic Farming is Coming to Our Valley : The Development of Pumi Eco-Agriculture and the Indigenisation of Modernity in Sino-Myanmar Borderlands." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388436.
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How do indigenous people perceive and practice eco-agriculture, especially when it was introduced as a development project? This thesis aims to delve into this question by focusing on a policy-induced agrarian transition for Pumi community in Sino-Myanmar borderlands. Using ethnographic methods, I intend to offer an intimate account of a provincial programme to facilitate eco-agriculture in this ethnic region. With the conceptual framework presented, the current research starts with the introduction of Pumi agricultural history and indigenous farming knowledge, with a focus on Pumi biocultural heritage. Then, I will examine how the process of ‘indigenisation of modernity’ (Sahlins 2000) has occurred against the backdrop of Pumi eco-agriculture programme. The insights will be distilled from three different aspects, which are agricultural land use, technical practices, and governance issues. For each aspect, I will scrutinise to what degree the government is following an industrial model to design the eco-agriculture agenda which corresponds to the ‘conventionalisation hypothesis’ of organic production (Buck 1997) and is thus in alignment with their long-term strategic goals to ‘modernise’ this borderland region through agricultural transformations, whereas the local Pumi farmers are actively coping with the government’s external interventions, meanwhile searching for the ‘alternative pathway’ towards agricultural modernisation. In the final chapter, I will interpret the motives of the both actors in the programme. For the government, the post-development theory will be employed to provide a critique of the ‘development discourse’ embedded in the agenda. For local farmers, the concept of ‘environmentality’ (Agrawal 2005) will be focused to interpret the Pumi farmers’ motives to indigenise, which ultimately questioning the transforming powers of modernity and globalisation on Pumi agrarian society. Basically, this thesis aims to trace the socio-political processes which drive the ‘agrarian transition’ in a Southeast Asian frontier, and further demonstrate how the resource abundance in the borderlands can underpin intense processes of commodification and dispossession (Nevins and Peluso 2008; Ishikawa 2010; see also Milne and Mahanty, 2015), the implications of which crystallised in an ethnographic context. To a larger extent, this research aims to shed lights on the interactions between social structure and individual agency ― although the Pumi farmers are struggling to survive with the adaptation to modern inputs, they are still marginalised by the structured inequality of the market economy, which limited the farmers’ opportunities to improve their own livelihoods. Furthermore, this research also has significant policy implications as it addresses the issues such as agricultural policy and ethnic relations in the borderland regions. By reflecting upon the overlapping implications of highland livelihoods, agencies, and the transforming powers of social change, the current study aims to build a locally rooted understanding of Pumi eco-agriculture programme, and provide lessons for sustainable planning and future policy-making for rural development in developing countries such as China.
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Santos, Rafaella Santana. "Lixo de formigas cortadeiras e seu papel no desenvolvimento de plantas." Universidade Federal de Sergipe, 2016. https://ri.ufs.br/handle/riufs/4484.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESThe nest refuse of leaf-cutting ants is the depleted material resulted from the degradation of vegetation harvested, after being partially consumed by workers, along with dead ants and remnants of own symbiotic fungus. It is an extremely rich material in many nutrients (N, P, K, Ca, Mg, S) and may act as an important component of the organic matter in tropical soils, influencing the development and diversity of plant species. In addition, as a renewable material, of relatively easy availability and sampling, it may be a compound with a high potential for organic farming. In this study, we evaluated the influence of nest refuse in two distinct situations: i) as a substrate for the production of vegetables and ii) the plant regeneration of newly deforested plots. To this purpose, the experiments were divided into two stages: first, the nest refuse was evaluated as a component in a substrate for production of lettuce seedlings (Lactuca sativa) and arugula (Eruca sativa) at different concentrations. The experimental design was completely randomized, consisting of six treatments and four replications. The treatments were the following mixtures: Control (Cont) considered the basic substrate containing bark of Pinus sp. + sand + vermiculite (3:3:1 v/v); commercial substrate (Tropstrato®- Trop); nest refuse of two species (Atta opaciceps and Acromyrmex balzani) + basic substrate, in two concentrations: 15% and 25% for each of the species tested (AT15, AT25, AC15 and AC25), respectively. All substrates were subjected to chemical analysis for determination of macro- and micronutrients. The influence of the substrate in the development of seedlings was evaluated by height, root length, stem diameter, dry weight and number of leaves at four periods: 15, 20, 25 and 30 days after sowing. For the second stage of the experiment, a portion of 10 m x 5 m was installed in a regeneration area. The plot was divided into 50 sub-plots of 1 m2, of these, 30 subplots were randomly selected for cataloguing herbaceous species present. After that, the original vegetation was completely removed in the whole plot area. Thereafter, it was installed at the center of each subplot a quadrant of 30 cm x 30 cm, 15 of them containing a mixture of a liter of sieved soil with 250 mL of nest refuse of Atta opaciceps (25% of nest refuse) and the remaining quadrants with 1 liter of bare soil (control). The quadrants remained in the field for 150 days to be reforested. Afterwards, richness, abundance, composition and dry biomass of the herbaceous species that colonized the plots were evaluated. Our results showed that the seedlings of vegetables in treatments containing nest refuse of leaf-cutting ants developed as well as those grown in the commercial product taking into account the evaluated attributes. Possibly, the highest average growth rates of seedlings from the AT25 and AC25 treatments are due to higher nutrient concentrations present in the material. The nest refuse also influenced the development of herbaceous species, since plots receiving nest refuse had higher biomass (vigor) in comparison with the control group. However, there was no influence of nest refuse in species diversity between treatments. Our results suggest that nest refuse produced by leaf-cutting ants may have applicability to either production of vegetables or to be disposed in areas that suffered some disturbance, pointing out another ecological service provided by ants.
O lixo de formigas cortadeiras é o material gerado da degradação do material vegetal após ser parcialmente consumido pelas operárias, juntamente com formigas mortas e resquícios do próprio fungo simbionte. É um material extremamente rico em diversos nutrientes e pode atuar como um importante insumo em solos tropicais, influenciando na diversidade e desenvolvimento de espécies vegetais. Além disso, por ser um material renovável, relativamente de fácil disponibilidade e coleta, pode ser um composto com alto potencial em cultivos orgânicos. Nesse estudo avaliamos a influência do lixo em duas situações distintas: i) como substrato para a produção de hortaliças e ii) na regeneração vegetal de parcelas recém desmatadas. Para alcance dos nossos objetivos, os experimentos foram divididos em duas etapas: na primeira, o lixo foi avaliado como componente na formulação de substratos para produção de mudas de alface (Lactuca sativa) e rúcula (Eruca sativa) em diferentes concentrações. O delineamento experimental utilizado foi inteiramente casualizado, formado por seis tratamentos e quatro repetições. Os tratamentos consistiram em: Cont (Pinus sp. + fibra de coco + vermiculita (3:3:1 v/v)); substrato comercial - (Trop); lixo de formigueiros + substrato Cont, oriundo de duas espécies (Atta opaciceps e Acromyrmex balzani) em duas concentrações de 15% e 25% para cada uma das espécies testadas (AT15, AT25, AC15 e AC25), respectivamente. Todos os substratos foram submetidos às análises químicas para determinação de macro e micronutrientes. A influência do substrato no desenvolvimento das mudas foi avaliada pela altura, comprimento da raiz, diâmetro do caule, massa seca e número de folhas, em quatro períodos: aos 15, 20, 25 e 30 dias após a semeadura. Para segunda etapa do experimento, uma parcela de 10 m x 5 m foi instalada em uma área em regeneração. A parcela foi subdividida em 50 subparcelas de 1 m2 destas, 30 subparcelas foram selecionadas aleatoriamente para levantamento das espécies herbáceas presentes. Após isso, a vegetação original foi totalmente removida em toda a área da parcela. Posteriormente, no centro de cada uma das 30 subparcelas foi demarcado um quadrante de 30 cm x 30 cm, sendo 15 contendo uma mistura de solo com Atta opaciceps (25% de lixo), totalizando um litro; e 15 com 1 litro de solo (controle). Os quadrantes permaneceram no local por 150 dias, para serem recolonizados pela vegetação. Após esse período avaliou-se a riqueza, abundância, composição e biomassa seca das espécies herbáceas que colonizaram as parcelas. Os nossos resultados mostraram que as mudas de hortaliças nos tratamentos contendo lixo de formigas cortadeiras se desenvolveram tão bem quanto as do tratamento comercial nos atributos avaliados. Possivelmente, as maiores médias de crescimento das mudas no tratamento AT25 e AC25 devem-se às maiores concentrações de nutrientes presentes no material. O lixo também influenciou o desenvolvimento das espécies herbáceas, as parcelas que receberam lixo apresentaram maior biomassa (vigor) em relação ao grupo controle. Porém, não foi observada influência do lixo na diversidade das espécies entre os tratamentos. Nossos resultados sugerem que o lixo produzido por formigas cortadeiras pode ter aplicabilidades tanto para a produção de hortaliças, quanto para ser inserido em áreas que sofreram alguma perturbação, ressalvando mais um serviço ecológico fornecido pelas saúvas.
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Payn, Valerie. "'Ilima', 'Izithebe' and the 'Green Revolution' : a complex agro-ecological approach to understanding agriculture in Pondoland and what this means for sustainability through the creation of 'Living Landscapes'." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20228.
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Thesis (MPhil)--Stellenbosch University, 2012.ENGLISH ABSTRACT: This thesis uses local narratives to explore relationships between agrarian landscapes, agrarian land use practices and the traditional cultural perspectives of traditional amaMpondo farming communities living along Pondoland‟s Wild Coast, on the East Coast of South Africa. This endeavour is based on theories that propose that human behaviour, including agrarian practice, is influenced by complex socio-cultural factors that shape cultural values, knowledge and world-views, and that are reflected in cultural narratives, and these influence the way different cultures relate to the surrounding environment. As a consequence of these cultural influences, different cultures use and shape the landscape in unique, culturally determined ways. Consequently, in human impacted landscapes attention needs to be paid to how cultural world-views, practices, customs and value systems influence the land use practices of the people inhabiting those landscapes. Amongst traditional communities with a long history of habitation within particular landscapes, traditional land use practices and customs, including agrarian practices, need to be understood from the perspective of the opportunities and constraints that particular environments present. Literature shows that a failure to understand relationships between culture and land use can led to the imposition of unsuitable development practices and policy on traditional cultures, and this can undermine cultural, agricultural and ecological diversity and lead to unsustainable models of development (Naveh, 1995; Antrop, 2005; Antrop, 2000; Capra, 2003; Capra, 1996; Nusser, 2001; Harding, S. 2006). Given the need to address development and agricultural practices that perpetuate unsustainable land use, an understanding of the nature of influencing relationships between landscape, land use and culture is particularly important Despite the debilitating influences of a colonial history, many rural communities along the Pondoland Wild Coast still retain a strong sense of cultural identity that has deep roots in a traditional agrarian system, and this has given rise to a unique indigenous landscape. This study of traditional amaMpondo farming communities presents an opportunity to gain insights into how different cultural perspectives might shape and utilize the landscape and lead to alternative land use systems than the dominant industrial norm.
AFRIKAANSE OPSOMMING: Hierdie tesis gebruik plaaslike narratiewe om die verhoudings tussen agrariese landskappe, landbou grondgebruik en die tradisionele kulturele perspektiewe van tradisionele amaMpondo boerdery gemeenskappe wat langs die Pondolandse Wildekus, aan die ooskus van Suid-Afrika voorkom te verken. Hierdie strewe is gebaseer op teorieë wat voorstel dat menslike gedrag, insluitende agrariese praktyk, beïnvloed word deur die komplekse sosio-kulturele faktore wat kulturele waardes, kennis en wêreldbeskouings vorm, en wat weerspieël word in die kulturele verhale, wat dan weer invloed het op die wyse waarop die verskillende kulture verband hou met die omliggende omgewing. As gevolg van hierdie kulturele invloede, maak verskillende kulture in unieke, kultureel bepaalde wyse gebruik van die landskap. Gevolglik, in landskappe wat deur die mens beïnvloed word, moet aandag geskenk word aan hoe kulturele wêreldbeskouings, praktyke, gewoontes en die waarde stelsels die mense in hierdie provinsies se landgebruik be-invloed. Tradisionele praktyke en kulture waaronder agrariese praktyke ingesluit is, moet in die tradisionele gemeenskappe wat 'n lang geskiedenis het van habitasie binne bepaalde landstreke, verstaan word vanuit die perspektief van geleenthede en beperkings wat hierdie besondere omgewings verteenwoordig. Litteratuur toon dat die versuim om die verhoudings tussen kultuur en grondgebruik te verstaan, kan lei tot die oplegging van ongeskikte ontwikkelings praktyke en beleid op tradisionele kulture. Dit kan' n kultuur-, landbou-en ekologiese diversiteit ondermyn en lei tot onvolhoubare modelle van ontwikkeling (Naveh, 1995; Antrop, 2005; Antrop, 2000, Capra, 2003; Capra, 1996; Nusser, 2001; Harding, S. 2006). Om die behoefte te vul wat ontwikkeling en landbou-praktyke wat nie-volhoubare grondgebruik perpetueer, is 'n goeie begrip van die aard van die beïnvloedings verhoudings tussen landskap, grondgebruik en kultuur veral belangrik. Ten spyte van die kreupelende invloed van 'n koloniale geskiedenis, het baie landelike gemeenskappe langs die Wildekus van Pondoland nog steeds' n sterk gevoel van kulturele identiteit wat diep wortels in 'n tradisionele agrariese stelsel het. Dit het aanleiding gegee tot' n unieke inheemse landskap. Hierdie studie van die tradisionele amaMpondo boerdery gemeenskappe bied 'n geleentheid aan om insig te verkry in hoe verskillende kulturele perspektiewe van die landskap kan vorm en gebruik maak en lei tot' n alternatiewe grondgebruik as die dominante industriële norm.
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Domínguez, Gómez María Jesús. "Efectos de la materia prima y el proceso secado-maduración sobre la calidad del jamón curado." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/160042.
Full textAbstract:
[ES] La materia prima es un elemento clave en cualquier proceso de transformación alimentaria, ya que de su composición y cualidades dependerá el producto final. En el caso del jamón, el origen de la materia prima, puede proceder de sistemas ganaderos convencionales, donde la producción es intensiva y la alimentación está basada en piensos comerciales. En el caso de cerdos procedentes de ganadería ecológica, los animales están sujetos a las condiciones marcadas por la normativa europea de producción ecológica, donde se respeta el medio ambiente y el bienestar animal. Para el caso de figuras de calidad, las explotaciones ganaderas también deben cumplir los requisitos indicados en los pliegos de condiciones.
Otro elemento que define al jamón curado es el proceso de elaboración, que se inicia con la salazón con o sin sales nítricas. El tiempo de secado-maduración, el sistema de secado (natural o con ventana abierta versus cámara con condiciones controladas) y la temperatura son elementos clave en el desarrollo de las cualidades organolépticas.
El principal objetivo del presente estudio es aportar resultados sobre la evolución en la composición de la carne, a lo largo del proceso de secado-maduración, en la elaboración de jamón curado, teniendo como variables del estudio, la procedencia del pernil (de granjas ganaderas convencionales, ecológicas o de la DOP Teruel), tecnología aplicada en el proceso de secado (cumpliendo los requisitos para la certificación ecológica), así como la influencia del sistema de secado (ventana abierta o cámara), evaluando los parámetros que permiten clasificar las diferentes variables.
Para ello se analizan un total de 36 jamones de cerdo blanco (convencional, ecológico y DOP Teruel), destinando 6 jamones de cada una para el secado natural y otros 6 para el secado en cámara. Los parámetros analizados son humedad, minerales totales, sodio, hierro, proteína, grasa, perfil de ácidos grasos, nitratos y nitritos, detección de antibióticos y compuestos de la fracción volátil.
Los resultados indican que los parámetros de color L*, b* y C* son mayores en los jamones procedentes de sistemas de producción convencional, en particular en los jamones DOP Teruel, donde además se incluye el parámetro a*. Los jamones de sistemas de producción convencional se caracterizan por presentar valores más elevados de humedad, grasa, proteína y cenizas, así como un contenido en ácidos grasos saturados mayor. Esto repercute en los valores de los índices de calidad de la grasa, con connotaciones negativas en el índice de aterogenicidad, de trombogenicidad o en la relación ω6/ω3, sobre todo si los jamones se secan en cámara. Los jamones ecológicos presentan valores más bajos de los componentes químicos analizados y niveles superiores de AGMI y AGPI, así como índices positivos de calidad de la grasa como el de ácidos grasos buenos para la salud o la relación AGPI/AGS, especialmente si se secan al natural. Generando jamones con una mayor presencia de compuestos volátiles.
La clasificación de los jamones, en función de la procedencia y el sistema de secado, se alcanza con éxito tomando los parámetros de color, ácidos grasos y los componentes terpenoides de la fracción volátil. El estudio de componentes principales permite clasificar los jamones convencionales como aquellos con mayor contenido en proteína, L*, cenizas, Fe, Na, H*, humedad, grasa, nitratos y nitritos, así como por los ácidos grasos behénico, palmítico, esteárico y mirístico. Los jamones ecológicos se caracterizarían por sus valores de a*, b* y C*, así como por la presencia de linoleico y linolénico y los jamones DOP Teruel serían aquellos con altos valores de ácidos grasos heptadecenoico, palmitoleico y oleico.[CA] La matèria primera és un element clau en qualsevol procés de transformació alimentària, ja que de la seua composició i qualitats dependrà el producte final. En el cas del pernil, l'origen de la matèria primera, pot procedir de sistemes ramaders convencionals, on la producció és intensiva i l'alimentació està basada en pinsos comercials. En el cas de porcs procedents de ramaderia ecològica, els animals estan subjectes a les condicions marcades per la normativa europea de producció ecològica, on es respecta el medi ambient i el benestar animal. Per al cas de figures de qualitat, les explotacions ramaderes també han de complir els requisits indicats en els plecs de condicions. Un altre element que defineix al pernil curat és el procés d'elaboració, que s'inicia amb la salaó, amb o sense sals nítriques. El temps de l'assecatge-maduració on la duració, el sistema d'assecatge (natural o amb finestra oberta versus cambra amb condicions controlades) i la temperatura són elements clau en el desenvolupament de les qualitats organolèptiques. El principal objectiu del present estudi és aportar resultats sobre l'evolució en la composició de la carn, al llarg del procés d'assecatge-maduració, en l'elaboració de pernil curat, tenint com a variables de l'estudi, la procedència del pernil (de granges ramaderes convencionals, ecològiques o de la DOP Teruel), tecnologia aplicada en el procés d'assecatge (complint els requisits per a la certificació ecològica), així com la influència del sistema d'assecatge (finestra oberta o cambra), avaluant els paràmetres que permeten classificar les diferents variables. Per a això s'analitzen un total de 36 pernils de porc blanc, prenent 12 de cadascuna de les procedències objecte d'estudi (convencional, ecològic i DOP Teruel), destinant 6 pernils de cadascuna per a l'assecatge natural i altres 6 per a l'assecatge en cambra. Els paràmetres analitzats són humitat, minerals totals, sodi, ferro, proteïna, greix, perfil d'àcids grassos, nitrats i nitrits, detecció d'antibiòtics i compostos de la fracció volàtil. Els resultats indiquen que els paràmetres de color L*, b* i C* són majors en els pernils procedents de sistemes de producció convencional, en particular en els pernils DOP Teruel, on a més s'inclou el paràmetre a*. Els pernils de sistemes de producció convencional es caracteritzen per presentar valors més elevats d'humitat, greix, proteïna i cendres, així com un contingut en àcids grassos saturats major. Això repercuteix en els valors dels índexs de qualitat del greix, amb connotacions negatives en l'índex de aterogenicitat, de trombogenicitat o en la relació ω6/ω3, sobretot si els pernils s'assequen en cambra. Els pernils ecològics presenten valors més baixos dels components químics analitzats i nivells superiors de AGMI i AGPI, així com índexs positius de qualitat del greix com el d'àcids grassos bons per a la salut o la relació AGPI/AGS, especialment si s'assequen al natural. Generant pernils amb una major presència de compostos volàtils. La classificació dels pernils, en funció de la procedència i el sistema d'assecatge, s'aconsegueix amb èxit prenent els paràmetres de color, àcids grassos i els components terpenoides de la fracció volàtil. L'estudi de components principals permet classificar els pernils convencionals com aquells amb major contingut en proteïna, L*, cendres, Fe, Na, H*, humitat, greix, nitrats i nitrits, així com pels àcids grassos behénic, palmític, esteàric i mirístic. Els pernils ecològics es caracteritzarien pels seus valors de a*, b* i C*, així com per la presència de linoleic i linolènic i els pernils DOP Teruel serien aquells amb alts valors d'àcids grassos heptadecenoic, palmitoleic i oleic.
[EN] The raw material is a key element in any food transformation process, since the final product will depend on its composition and qualities. In the case of ham, the origin of the raw material can come from conventional livestock systems, where production is intensive and food is based on commercial feed. In the case of pigs from organic farming, the animals are subject to the conditions set by the European organic production regulations where the environment and animal welfare is respected. In the case of quality figures, livestock farms must also meet the requirements indicated in the specifications. Another element that defines cured ham is the production process, which begins with salting, with or without nitric salts. The duration of the drying-maturing, the drying system (natural or with an open window versus chamber with controlled conditions) and temperature are key elements in the development of organoleptic qualities. The main objective of this study is to provide results on the evolution in the composition of the meat, throughout the drying-maturation process, in the elaboration of dry-cured ham, having as variables of the study, the origin of the leg (from cattle farms conventional, ecological or of the Teruel PDO), technology applied in the drying process (meeting the requirements for ecological certification), as well as the influence of the drying system (open window or chamber), evaluating the parameters that allow classifying the different variables. For this, a total of 36 white pig hams are analyzed (conventional, organic and PDO Teruel), allocating 6 hams of each for natural drying and another 6 for drying under controlled conditions. The parameters analyzed are moisture, total minerals, sodium, iron, protein, fat, profile of fatty acids, nitrates and nitrites, detection of antibiotics and compounds of the volatile fraction. The results indicate that the color parameters L *, b * and C * are higher in hams from conventional production systems, particularly in PDO Teruel hams, where the a * parameter is also included. Hams from conventional production systems are characterized by higher moisture, fat, protein and ash values, as well as a higher saturated fatty acid content. This affects the values of the fat quality indices, with negative connotations in the atherogenicity index, thrombogenicity or in the ω6/ω3 ratio, especially if the hams dried in controlled conditions. Organic hams present lower values of the chemical components analyzed and higher levels of MUFA and PUFA, as well as positive indices of fat quality such as fatty acids good for health or the PUFA / SFA ratio, especially in natural driying. Generating hams with a greater presence of volatile compounds. The classification of hams, depending on the origin and the drying system, is successfully achieved by taking the parameters of color, fatty acids and the terpenoid components of the volatile fraction. The study of main components makes it possible to classify conventional hams as those with the highest content in protein, L *, ashes, Fe, Na, H *, moisture, fat, nitrates and nitrites, as well as by behenic, palmitic, stearic and myristic. Organic hams would be characterized by their a *, b * and C * values, as well as by the presence of linoleic and linolenic levels, and DOP Teruel hams would be those with high levels of heptadecenoic, palmitoleic and oleic fatty acids.
Domínguez Gómez, MJ. (2020). Efectos de la materia prima y el proceso secado-maduración sobre la calidad del jamón curado [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/160042
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Krause, Ariane [Verfasser], Johann [Akademischer Betreuer] Köppel, Vera Susanne [Akademischer Betreuer] Rotter, Martin [Akademischer Betreuer] Kaupenjohann, Eckhard [Akademischer Betreuer] George, Johann [Gutachter] Köppel, Vera Susanne [Gutachter] Rotter, and Friederike [Gutachter] Lang. "Valuing wastes : an integrated system analysis of bioenergy, ecological sanitation, and soil fertility management in smallholder farming in Karagwe, Tanzania / Ariane Krause ; Gutachter: Johann Köppel, Vera Susanne Rotter, Friederike Lang ; Johann Köppel, Vera Susanne Rotter, Martin Kaupenjohann, Eckhard George." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1177881373/34.
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Van, de Hoef Sherri. "Changing landscapes, stories of five women farming ecologically." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ52228.pdf.
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Azevedo, Letícia Fátima de. "SABERES E PRÁTICAS TRADICIONAIS: uma análise do modo de apropriação da natureza pelos pecuaristas familiares da Serra do Sudeste/RS." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/8901.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorThis study addresses the issue of the mode of appropriation of nature, from the ethnoecological approach in the context of family farming. Aiming to analyze, especially the corpus (knowledge) and praxis (practice productive) family of farmers for cattle cutting Território do Alto Camaquã - Serra do Sudeste/RS. For this, the location of the study involved three counties Caçapava do Sul, Pinheiro Machado and Piratini that are part of the Território do Alto Camaquã and Bioma Pampa. The research method was qualitative /quantitative with descriptive approach and purposive sampling. As tools for the study were used literature, participant observation, field diary and semi-structured interview applied to family farmers. It was found that family farmers have extreme resemblance to the mode of appropriation of nature peasant. This is evident from the results in the use of energy, land size, self-sufficiency, use of workforce diversity, productivity, wishes and desires, forms and transmission of knowledge and vision on nature and the world. The knowledge that apply familiar farmers have much of their previous generations passed them, passed from generation to generation is closely linked with cultural values. Thus will they be shaping productive practices conducted by this audience, with some adjustments over the years to improve production in harmony with the natural resources available (deferment, improvement of native pastures with winter species, castration with burdizzo and breeding flock with european breeds). Natural resources that farmers take ownership to effectively produce the beef cattle grazing native pasture are threefold: sun (light), water (rainfall) and soil (pasture). Making us understand how the production cycle to take place using a small part of external inputs, which are to animal, proving that effect the broad relationship and dependence on environmental conditions of the farmers family. It appears that family farmers are not motivated primarily by factors of an economic, as economic profit and profitability, corroborating the thesis Chayanov. Noting that approximately 80% of the total area of the properties studied are formed by natural grassland and only 4.44% are destined for grazing. It is concluded from this study that family ranchers are integrated into Pampa, through historical, social and environmental, contribute to the preservation and characterization of the landscape within the Bioma Pampa.
Este estudo aborda a temática do modo de apropriação da natureza, a partir do enfoque etnoecológico, no contexto da pecuária familiar. Objetivando analisar, especialmente, o corpus (conhecimentos) e a práxis (práticas produtivas) dos pecuaristas familiares criadores de bovinos de corte do Território do Alto Camaquã Serra do Sudeste/RS. Para isso, o local do estudo compreendeu três municípios Caçapava do Sul, Pinheiro Machado e Piratini que fazem parte do Território do Alto Camaquã e do Bioma Pampa. O método de pesquisa foi o quali/quantitivo, com abordagem descritiva e amostragem intencional. Como instrumentos para o estudo foram utilizados pesquisa bibliográfica, observação participante, diário de campo e entrevista semi-estruturada aplicada aos pecuaristas familiares. Constatou-se que os pecuaristas familiares possuem extrema semelhança com o modo de apropriação da natureza camponês. Isto evidenciado a partir dos resultados quanto ao uso da energia, tamanho da terra, auto-suficiência, uso da força de trabalho, diversidade da produção, produtividade, desejos e anseios, formas e transmissão dos conhecimentos e visão frente à natureza e ao mundo. O conhecimento que os pecuaristas familiares aplicam tem muito do que suas gerações anteriores os passaram, passado de geração em geração está intimamente ligado com os valores culturais. Dessa forma é que vão se moldando as práticas produtivas realizadas por este público, com algumas adaptações no decorrer dos anos, para melhoria da produção em harmonia com os recursos naturais disponibilizados (diferimento, melhoramento da pastagem natural com espécies de inverno, castração com burdizzo e melhoramento rebanho com raças européias). Os recursos naturais que os pecuaristas se apropriam para efetivamente produzirem o bovino de corte extensivamente em pastagem natural são a tríplice: sol (luminosidade), água (chuva) e solo (pastagem natural). Fazendo-nos compreender assim que o ciclo de produção para acontecer utiliza uma pequena parte de insumos externos não renováveis, sendo estes para a sanidade animal, comprovando nesse sentido a ampla relação e dependência, das condições ambientais dos pecuaristas familiares. Constata-se que os pecuaristas familiares não são motivados prioritariamente por fatores de caráter econômico, como o lucro e a rentabilidade econômica, corroborando com a tese de Chayanov. Destaca-se que aproximadamente 80% da área total das propriedades estudadas são formadas por pastagem natural e apenas 4,44% são destinadas a pastagem cultivada. Conclui-se com este estudo que os pecuaristas familiares estão integrados ao Pampa, por meio de aspectos históricos, sociais e ambientais, contribuindo com a preservação e caracterização da paisagem no território do Bioma Pampa.
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Barré, Kévin. "Mesurer et compenser l’impact de l’éolien sur la biodiversité en milieu agricole." Thesis, Paris, Muséum national d'histoire naturelle, 2017. http://www.theses.fr/2017MNHN0002/document.
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L’aménagement du territoire et l’intensification agricole constituent deux causes majeures du déclin de la biodiversité. La plupart des projets d’aménagement sont tenus d’appliquer la séquence « éviter-réduire-compenser » (ERC) aux impacts générés, pour atteindre une absence de perte nette de biodiversité. La mise en place de cette séquence dans le cas de la construction de parcs éoliens se heurte à la difficulté d’évaluation et de prédiction des impacts dont la mortalité par collisions avec les chiroptères et l’avifaune. Nous avons en effet montré dans un travail préliminaire que les manques théoriques sur l’évaluation de l’impact combinés à une qualité variable des études réglementaires amènent aujourd’hui à i) un évitement et une réduction peu efficaces, ii) une compensation la plupart du temps inexistante ou hasardeuse. Face aux contraintes d'implantation, les éoliennes sont principalement installées en milieu agricole. Ce dernier, en plus de constituer un espace de production alimentaire, de support d’énergie renouvelable et de biodiversité, doit également assurer le rôle de compensation des impacts générés par la production d’énergie éolienne. Il apparaît d’autant plus urgent d’étudier cette problématique que ces impacts semblent pouvoir affecter les populations d’espèces en fort déclin. Dans un premier temps, nous avons quantifié un deuxième type d’impact des éoliennes, la répulsion exercée sur les chiroptères, jusqu’ici largement méconnue et de ce fait non pris en compte dans les projets d’implantation. Nous mettons en évidence un fort impact négatif de la présence d’éoliennes sur la fréquentation des haies par les chiroptères jusqu’à une distance minimale de 1000 m autour de l’éolienne, engendrant ainsi d’importantes pertes d’habitats. Or, à l’échelle du nord-ouest de la France, 89% des éoliennes sont implantées à moins de 200 m d’une lisière arborée (haie ou forêt), cette distance constituant une recommandation européenne. Cette étude améliore donc les connaissances liées à l’implantation des éoliennes pour optimiser l’évitement d’une partie des impacts, les rendant compensables par leur quantification. Nous avons ensuite comparé différentes mesures couramment utilisées en compensation (jachères et infrastructures agroécologiques), en développant un calcul d’équivalence multi-taxonomique entre ces mesures. Ceci a permis en toute transparence de proposer des alternatives aussi efficaces à une mesure peu acceptable (par exemple les jachères en contexte grandes cultures), maximisant les leviers de mise en place de la compensation. Enfin, nous avons évalué la faisabilité de mesures compensatoires potentiellement plus acceptables, non plus axées sur l’ajout d’éléments dans la matrice agricole, mais sur des mesures visant directement la qualité de cette matrice support de biodiversité. En se focalisant sur des changements de pratiques agricoles n’engendrant pas ou peu de pertes de rendement, nous montrons que la simplification du travail du sol peut apporter de forts bénéfices à l’avifaune et aux chiroptères. Toutefois, ce bénéfice peut fortement varier en fonction des pratiques visant à limiter l’excès de végétation spontanée généré par l’absence de labour. Une diminution du travail du sol et de l’usage d’herbicides peuvent créer des gains comparables à ceux obtenus en agriculture biologique. La thèse souligne l’urgence de reconsidérer les stratégies actuelles d’implantation et d’exploitation des éoliennes en milieu agricole, causant de fortes pertes d’habitats et une mortalité systématique. Elle montre aussi qu'en dépit des manques de connaissances limitant les possibilités d’un dimensionnement des mesures compensatoires fondé sur une quantification intégrale des impacts, nous sommes en mesure d’apporter d’ores et déjà des gains écologiques efficaces en milieu agricole grâce à des mesures acceptables par l’ensemble des acteursLand-use planning and agricultural intensification are two major causes of biodiversity loss. Most of development projects have to apply the mitigation hierarchy, i.e. avoid, reduce then offset impacts on biodiversity, in order to achieve the no net loss. Wind farm installation makes the mitigation hierarchy application difficult due to the lack of knowledges regarding the quantification and the prediction of impacts, characterized by collisions of birds and bats with turbines. In a preliminary study we showed that the current fail of impact assessment studies in i) the avoidance and the reduction as well as ii) the offsetting of impact, are mainly linked to a lack of theoretical knowledges and a low quality of studies. Installation constraints often imply to implement wind turbines in farmland areas. Such areas have the triple function of food production, renewable energy and biodiversity carrier, but they also have to offset impacts on biodiversity, which are generated by wind turbines. Thus, there is an urgent need to improve the consideration of impacts on biodiversity in projects, which would have underestimated effects on populations. In a first time, we quantified a new type of impact: the wind turbine revulsion on bats. This impact is so far little known and not taken into account in assessment studies for wind farm installations. We highlighted a negative long distance impact (over 1000 m) of wind turbine proximity on bat activity at hedgerows, which is a highly attractive habitat for this taxa. These strong negative impacts currently lead to high losses of habitat use. Moreover, at the region scale study (north-west France), 89% of turbines are implemented at less than the European recommendations (200 m to wooded edges -hedgerows or forests). Thus, this study improved knowledges in order to optimize avoidance of this impact and made them measurable allowing their offsetting. We then compared different commonly used offsetting measures (i.e. fallows and agroecological elements), by developing a method for calculating ecological equivalences between offset measure. This allowed in complete transparency to find alternative measures as efficiently as an initial low acceptable measure (i.e. fallows in open field area). Such a method allowed an effective implementation of measures. Finally, we assessed the ecological gain provided by new types of measures such as changes in farming practices. Unlike classic measures which are usually an implementation of new elements in the landscape, changes in farming practices consist in quality improving of arable land features. Because we studied changes which do not implies losses of yield, or low in first years after changes, such measures are potentially more acceptable for farmers. We showed that tillage and herbicide reduction could positively impact birds and bats. However, to reduce tillage (i.e. no ploughing) implies to adapt the method to control weeds, previously performed by ploughing. Several possibilities can be used such as cover cropping or herbicide use intensification. In this context, our results also highlighted that positive impacts could vary significantly among underlying weed control possibilities. For instance, tillage reduction, when one herbicide pass is removed, generates as much ecological gain than organic farming system. This PhD thesis highlights the urgent need to adapt wind energy planning and these exploitation in farming areas, due to high habitat loss and systematic mortality. This thesis also shows that despite the current lack of knowledges, preventing to design offsetting measures facing to quantified impacts, implementation of acceptable measures for stakeholders may provide effective gains for bats and birds