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Rozprawy doktorskie na temat „Vegetation change”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 25 lipca 2025

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1

Gillson, Lindsey. "Vegetation change in East African elephant habitat." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396163.

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Mandzy, Herring Luba T. "Vegetation dynamics and emvironmental change in Mongolia." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496582.

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Barichivich, J. "Responses of boreal vegetation to recent climate change." Thesis, University of East Anglia, 2014. https://ueaeprints.uea.ac.uk/49468/.

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The high northern latitudes have warmed faster than anywhere else in the globe during the past few decades. Boreal ecosystems are responding to this rapid climatic change in complex ways and some times contrary to expectations, with large implications for the global climate system. This thesis investigates how boreal vegetation has responded to recent climate change, particularly to the lengthening of the growing season and changes in drought severity with warming. The links between the timing of the growing season and the seasonal cycle of atmospheric CO2 are evaluated in detail to infer larg
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Scandrett, Eurig. "Gap formation and cyclical change in heathland vegetation." Thesis, University of Aberdeen, 1987. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU010080.

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The phasic, cyclical model of Calluna-dominated vegetation dynamics, proposed by A.S. Watt, is evaluated by investigation of the gap in the degenerate plant. Succession in the gap is analysed by Markov models and found to be non-Markovian, with a number of processes occurring simultaneously. Vegetation changes are better interpreted in terms of certain ecological attributes of the species concerned. The inter-relationships between three important moss species are investigated further. Regeneration of Calluna is very variable. Seedling establishment requires a safe site and sufficient moisture,
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5

Liu, Ning. "Changes in water and carbon in Australian vegetation in response to climate change." Thesis, Liu, Ning (2017) Changes in water and carbon in Australian vegetation in response to climate change. PhD thesis, Murdoch University, 2017. https://researchrepository.murdoch.edu.au/id/eprint/40206/.

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Australia has experienced pronounced climate change since 1950, especially in forested areas where a reducing trend in annual precipitation has occurred. However, the interaction between forests and water at multiple scales, in different geographical locations, under different management regimes and in different forest types with diverse species is not fully understood. Therefore, some interactions between forests and hydrological variables, and in particular whether the changes are mediated by management or climate, remain controversial. This thesis investigates the responses of Australia’s t
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Silva, Rui Pedro Guerreiro Duarte Rivaes. "Predicting the effects of climatic change on mediterranean riparian vegetation using a dynamic vegetation model." Master's thesis, ISA, 2010. http://hdl.handle.net/10400.5/2883.

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Mestrado em Gestão e Conservação de Recursos Naturais - Instituto Superior de Agronomia<br>The present master's thesis, had as its main objective the application of a dynamic model of riparian habitats in a case study with pronounced mediterranean characteristics. he vegetation model used is based on the existence of water conditions (water height and distance to water) suitable for the development of each type of riparian vegetation in different stages of their development, modeling annually its space-time evolution. The rules underlying the model take into account the height of the flow, the
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Maranganti, Sashikiran. "Vegetation Change Detection in India Using MODIS Satellite Images." Thesis, Linköping University, Department of Computer and Information Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-56591.

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<p>Due to man made events and natural causes many regions are currently undergoing rapid and wide ranging changes in land cover globally including developing and developed countries. India is one of them where land use and land cover change are taking place at a rapid pace. Forests are the most valuable natural resources available to the mankind on planet earth. On the one hand, they are the essential source of livelihood for the poor and marginalized sections of the society; on the other hand they provide furniture and other items of desire for the rich. Forest land cover change is an importa
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8

Scherrer, Pascal, and n/a. "Monitoring Vegetation Change in the Kosciuszko Alpine Zone, Australia." Griffith University. Australian School of Environmental Studies, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040715.125310.

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This thesis examined vegetation change over the last 43 years in Australia's largest contiguous alpine area, the Kosciuszko alpine zone in south-eastern Australia. Using historical and current data about the state of the most common vegetation community, tall alpine herbfield, this thesis addressed the questions: (1) what were the patterns of change at the species/genera and life form levels during this time period; (2) what were the patterns of recovery, if recovery occurred, from anthropogenic disturbances such as livestock grazing or trampling by tourists; (3) what impacts did natural distu
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9

Musgrove, Nicholas James. "Land use and vegetation change on the Long Mynd." Thesis, University of Wolverhampton, 2009. http://hdl.handle.net/2436/84479.

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The plant communities of the Long Mynd plateau are the culmination of over 3000 years of human intervention that largely deforested the uplands, and subsequently maintained the generally treeless heath and grassland communities now extant. The capacity of these communities to respond to directional change is well known, indeed the traditional mode of heathland management, burning, depends on the regenerative capacity of the target species, generally heather (Calluna vulgaris), for its success. However, changes in post WW2 stocking practice; the loss of ponies followed by an increase in the num
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10

Kennedy, Michael Patrick. "Predicting the impact of hydrological change on wetland vegetation." Thesis, University of Glasgow, 2001. http://theses.gla.ac.uk/3984/.

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During a three year field study (1997-2000) vegetation assemblages, collective vegetation variables, traits of dominant populations and hydrological and hydrochemical variables were repeat-sampled within seven wetland sites across Scotland and northern England. These ranged from the Irish Marshes, Inverness-shire in the north, to Tarn Moss, Cumbria at the southern extreme. Sampling was conducted at a total of fifty-six permanent sample stations located along a total of eleven transects. Vegetation groupings were defined using multivariate analyses, and were classified as various fen, mire, and
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11

Ahwaidi, G. M. A. "Factors affecting recent vegetation change in north-east Libya." Thesis, University of Salford, 2017. http://usir.salford.ac.uk/44560/.

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Over the last few decades global warming and human intervention have led to changes and deterioration in natural vegetation across the world. The Al Jabal Al Akhdar, in north east Libya, is one of those areas that have experienced changes in land cover. This region has environmental and economic importance in providing suitable habitat for wildlife and providing services for local communities and cities in the Libyan Desert. The overall aim of this thesis was to evaluate the factors which have affected vegetation cover change in the Al Jabal Al Akhdar region over the last 42 years. There were
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12

Davie, Timothy John Acton. "Modelling the effects of vegetation change on stormflow hydrology." Thesis, University of Bristol, 1993. http://hdl.handle.net/1983/06ddd2d3-14c1-4825-bccc-65f73c0826dd.

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A study into the effects of vegetation change (particularly afforestation and reforestation) on the hydrology of an area requires a predictive investigative method. This is because empirical studies require a long time period to collate the necessary data and the results cannot be transferred to a remote site with any confidence. Physically based, distributed hydrological modelling offers a predictive capability but the use of effective parameters and lack of verification and validation casts doubts on the ability of the current generation of these models to be used in applications. In this th
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13

Milton, Suzanne Jane. "Studies of herbivory and vegetation change in Karoo shrublands." Doctoral thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/9583.

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Includes bibliographical references.<br>The broad objective of these studies was to view present landuse (extensive small stock ranching) in the Karoo against the background of relationships between indigenous plants and animals and to indicate how modification of herbivore regimes might affect this arid environment. Specific objectives were to determine how grazing by domestic livestock brings about vegetation change, why such changes are sometimes irreversible, and whether existing conceptual models of vegetation dynamics adequately explain the impact of domestic livestock on Karoo vegetatio
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Scherrer, Pascal. "Monitoring Vegetation Change in the Kosciuszko Alpine Zone, Australia." Thesis, Griffith University, 2004. http://hdl.handle.net/10072/366283.

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This thesis examined vegetation change over the last 43 years in Australia's largest contiguous alpine area, the Kosciuszko alpine zone in south-eastern Australia. Using historical and current data about the state of the most common vegetation community, tall alpine herbfield, this thesis addressed the questions: (1) what were the patterns of change at the species/genera and life form levels during this time period; (2) what were the patterns of recovery, if recovery occurred, from anthropogenic disturbances such as livestock grazing or trampling by tourists; (3) what impacts did natural distu
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15

Grieger, Rebekah. "Resilience of Coastal Freshwater Wetland Vegetation to Climate Change." Thesis, Griffith University, 2021. http://hdl.handle.net/10072/410470.

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Coastal wetlands are globally important ecosystems, valued for their provision of habitat, storm mitigation, water quality improvement, and carbon sequestration. Coastal wetlands are also one of the ecosystems most likely to be impacted by projected changes in climate, particularly changes associated with sea level rise, altered rainfall patterns, and changes to storm patterns and severity. Coastal freshwater wetlands (CFWs) are amongst the most understudied group of coastal wetlands and are characterised by freshwater dominated hydrology but can also experience periods of salinity associated
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16

R, A. Majdaldin, B. A. Osunmadewa, E. Csaplovics, and D. Aralova. "Remote sensing-based vegetation indices for monitoring vegetation change in the semi-arid region of Sudan." SPIE, 2016. https://tud.qucosa.de/id/qucosa%3A35109.

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Land degradation, a phenomenon referring to (drought) in arid, semi-arid and dry sub-humid regions as a result of climatic variations and anthropogenic activities most especially in the semi-arid lands of Sudan, where vast majority of the rural population depend solely on agriculture and pasture for their daily livelihood, the ecological pattern had been greatly influenced thereby leading to loss of vegetation cover coupled with climatic variability and replacement of the natural tree composition with invasive mesquite species. The principal aim of this study is to quantitatively examine the v
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17

Hall, Stuart. "Vegetation change and vegetation type stability in the Cape of Good Hope Nature Reserve 1966 - 2010." Bachelor's thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/26385.

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Vegetation stability was investigated within the Cape of Good Hope Nature Reserve by incorporating three vegetation surveys spanning a 44 year time period. The goals of this study were to investigate changes in overall species diversity within the reserve, stability of community composition within and between sites, and which factors are influencing stability. A survey was conducted on 26 vegetation plots across the reserve. Data from this survey and two previous surveys was used to compare species diversity between time periods. Vegetation compositional similarity was also compared between si
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18

Berrío, Mogollón Juan Carlos. "Lateglacial and Holocene vegetation and climatic change in lowland Colombia." Amsterdam : Amsterdam : Universiteit van Amsterdam ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/63800.

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Waha, Katharina. "Climate change impacts on agricultural vegetation in sub-Saharan Africa." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2013/6471/.

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Agriculture is one of the most important human activities providing food and more agricultural goods for seven billion people around the world and is of special importance in sub-Saharan Africa. The majority of people depends on the agricultural sector for their livelihoods and will suffer from negative climate change impacts on agriculture until the middle and end of the 21st century, even more if weak governments, economic crises or violent conflicts endanger the countries’ food security. The impact of temperature increases and changing precipitation patterns on agricultural vegetation motiv
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20

Ström, Lotta. "Effects of climate change on boreal wetland and riparian vegetation." Doctoral thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-43811.

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Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at high northern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation during winter falling as rain instead of snow. These changes will substantially alter the hydrology of rivers and streams and change the conditions for riverine communities. The warming is also expected to result in species adjusting their geographic ranges to stay within their climatic tolerances. Ripa
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21

Raphael, Jordan. "50 Years of Vegetation Change in a Holly Maritime Forest." Thesis, Hofstra University, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1573792.

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<p> The Sunken Forest, located on Fire Island National Seashore, is a critically imperiled habitat and is one of only two known old-growth maritime holly forests in the world. Analysis of a dataset that dates back to nearly half a century has helped to identify major drivers influencing changes within the forest. These major drivers include; white-tailed deer herbivory, erosion, sea level rise, increased storm events, and canopy-gap dynamics. As of 2013, the Sunken Forest canopy is still analogues of 1967, but over the last 35 years vegetation recruitment within the forest has become limited d
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22

Price, Cynthia Gail. "Characterising the responses of British upland vegetation to environmental change." Thesis, University of Sheffield, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245571.

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Greenup, Alison Laura. "Responses of peatland vegetation and methane flux to environmental change." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327727.

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Wilson, Peter James. "The causes and consequences of recent vegetation change in Britain." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300078.

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Axelsson, Christoffer R. "A Study of African Savanna Vegetation Structure, Patterning, and Change." Thesis, South Dakota State University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10831282.

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<p> African savannas cover roughly half of the continent, are home to a great diversity of wildlife, and provide ecosystem services to large populations. Savannas showcase a great diversity in vegetation structure, resulting from variation in climatic, edaphic, topographic, and biological factors. Fires play a large role as savannas are the most frequently burned ecosystems on Earth. To study how savanna vegetation structure shifts with environmental factors, it is necessary to gather site data covering the full gradient of climatic and edaphic conditions. Several earlier studies have used coa
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Borgelt, Jan. "Terrestrial respiration across tundra vegetation types." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-132765.

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Large amounts of carbon (C) are stored in tundra soils. Global warming may turn tundra ecosystems from C sinks into sources or vice versa, depending on the balance between gross primary production (GPP), ecosystem respiration (ER) and the resulting net ecosystem exchange (NEE). We aimed to quantify the summer season C balance of a 27 km2 tundra landscape in subarctic Sweden. We measured CO2 fluxes in 37 widely distributed plots across five tundra vegetation types and in 7 additional bare soil plots, to assess effects of abiotic and biotic components on C exchange. C fluxes in bare soils were l
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Coulthard, Thomas James. "Modelling upland catchment response to Holocene environmental change." Thesis, University of Leeds, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.364900.

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Simons, Liora-lee. "Rehabilitation as a method of understanding vegetation change in Paulshoek, Namaqualand." Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=init_1570_1178278223.

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Rhemtulla, Jeanine Marie. "Eighty years of change, the montane vegetation of Jasper National Park." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ40099.pdf.

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Ross, Louise C. "Fifty years of vegetation and environmental change in the Scottish Highlands." Thesis, University of Aberdeen, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.542656.

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Long-term data are valuable for detecting changes in vegetation composition, and investigating how vegetation is responding to environmental change.  We use a range of approaches to quantify, characterise and interpret vegetation change in upland plant communities of the Scottish Highlands by comparing two datasets, collected in 1956-58 and 2007-08, on the species composition of representative plots in major vegetation types in the North-West Highlands and the East Central Highlands.  Firstly, we validate the methodology used for relocating plots that were not permanently marked, by showing th
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Wahrman, Spencer A. "Time Series Analysis of Vegetation Change using Hyperspectral and Multispectral Data." Thesis, Monterey, California. Naval Postgraduate School, 2012. http://hdl.handle.net/10945/17473.

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Approved for public release; distribution is unlimited<br>Grand Lake, Colorado has experienced a severe mountain pine beetle outbreak over the past twenty years. The aim of this study was to map lodgepole pine mortality and health decline due to mountain pine beetle. Multispectral data spanning a five-year period from 2006 to 2011 were used to assess the progression from live, green trees to dead, gray-brown trees. IKONOS data from 2011 were corrected to reflectance and validated against an Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) hyperspectral dataset, also collected during 201
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Bórnez, Mejías Kevin. "Study of vegetation dynamics from satellite: phenological responses to climate change." Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/673693.

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La fenologia és la clau per a controlar els processos fisicoquímics i biològics, especialment l’albedo, la rugositat superficial, conductància de les fulles, fluxos de carboni, aigua i energia. Per tant, l’estimació de la fenologia és cada vegada més important per a comprendre els efectes del canvi climàtic en els ecosistemes i les interaccions biosfera-atmosfera. La teledetecció és una eina útil per a caracteritzar la fenologia, encara que no existeix un consens sobre el tipus de sensor satel·litari i metodologia òptims per a extreure mètriques fenològiques. Els objectius principals de la
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Lim, Sophak. "50,000 years of vegetation and climate change in the Namib Desert." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT150/document.

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Cette thèse présente les données des pollens et micro-charbons fossiles couvrant la période des 50 000 dernières années à partir de sites sélectionnés transversalement nord-sud du désert de Namib. Dans le cadre de cette thèse, on utilise le rock hyrax middens, l’accumulation des boulettes et des urines fossilisés du Procavia capensis, représentant une excellente archive pour archives pour la préservation des pollens et micro-charbons à long-terme. Trois sites des hyrax middens ont été sélectionnés pour l'analyse: au sud du désert de Namib (Pella), la marge est des dunes de sable de Namib (Zizo
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Davis, Basil Andrew Stansfield. "Palaeolimnology and holocene environmental change from endoreic lakes in the Ebro Basin, North-East Spain." Thesis, University of Newcastle Upon Tyne, 1994. http://hdl.handle.net/10443/642.

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Lake sediments from inland endoreic (saline) lakes in the semi-arid Ebro Basin, NE Spain have been analysed to provide a history of lake level, vegetation, catchment erosion and anthropogenic activity over the last 10,000 years. Analysis was undertaken for pollen, macrofossils (seeds, Cladocera ephippia, Chironomid head capsules etc), charcoal, geochemistry (total cations/trace metals, sulphate, carbonate & LOI) and sediment composition. Fourteen AMS radiocarbon dates provide dating control. Seven cores were investigated from 4 seasonal playa lakes, I shallow (<1.5m) semi-permanent salt lake,
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Gordon, Carmen. "The effects of environmental change on competition between heather and bracken." Thesis, University of Aberdeen, 1998. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU531073.

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Vegetation dominated by heather and bracken, two common species of the UK uplands, is often nutrient limited and heavily influenced by climate. Thus, changes in climate or nutrient availability might be expected to have pronounced effects on growth and competition between these species. Mature heather and bracken turfs, transplanted from the field into 1 x 1 by 0.5 m deep plots, were subjected to factorial experimental treatments of root competition, shoot competition, summer drought, increased nitrogen supply and increased temperature for four consecutive years. The effects of root competitio
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DiGirolamo, Paul A. "A comparison of change detection methods in an urban environment using LANDSAT TM and ETM+ satellite imagery a multi-temporal, multi-spectral analysis of Gwinnett County, GA 1991-2000 /." unrestricted, 2005. http://etd.gsu.edu/theses/available/etd-07242006-110800/.

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Thesis (M.A.)--Georgia State University, 2005.<br>Title from title screen. Zhi-Yong Yin, committee chair; Paul Knapp, Truman Hartshorn, committee members. Electronic text (135 p. : col. ill., col. maps)) : digital, PDF file. Description based on contents viewed Aug. 2, 2007. Includes bibliographical references (p. 125-133).
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Hos´cilo, Agata. "Fire regime, vegetation dynamics and land cover change in tropical peatland, Indonesia." Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/9932.

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This thesis seeks to understand and explain the role of fire in land cover change, vegetation and carbon dynamics in the carbon-dense, tropical peat swamp forest ecosystem of Southeast Asia. Following a methodological review, earth observation and ground data are employed to investigate fire regime, post-fire vegetation recovery, and fire-driven carbon losses in 4,500 km2 of peatland in Central Kalimantan, Indonesian Borneo. Results reveal an increasing trend in deforestation (2.2% yr-1 forest loss rate, 1973-1996; 7.5% yr-1, 1997-2005) and identify fire as the principal cause. A step change i
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Puttock, Alan Keith. "Vegetation change and water, sediment and carbon dynamics in semi-arid environments." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/13541.

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This study develops understanding of vegetation change and water, sediment and carbon dynamics in semi-arid environments. Objectives were addressed using an integrated ecohydrological and biogeochemical approach. Fieldwork, over two contrasting grass-woody transitions at the Sevilleta National Wildlife Refuge, New Mexico, USA; quantified vegetation structure, soil structure and the spatial distribution of soil carbon resources. Over both transitions; woody sites showed a lower percentage vegetation cover and a greater heterogeneity in vegetation pattern, soil properties and soil carbon. Soil o
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Weisskopf, A. R. "Vegetation, agriculture and social change in late Neolithic China : a phytolith study." Thesis, University College London (University of London), 2010. http://discovery.ucl.ac.uk/20313/.

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Late Neolithic and Early Bronze Age Central China was the scene of important cultural developments, which impacted on agricultural practices and local vegetation. Using phytolith data from 4 archaeological -sites and a survey of a further 11 sites in Henan this project investigates changing crop choices, developments in crop processing and, to a lesser extent, differing local environments both temporally and spatially. Comparisons of relative levels of phytoliths from crop husks, Panicum, Setaria and Oryza, from each site and period were compared to provide evidence of changes in crop repertoi
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Yan, Na. "Dune transformations driven by vegetation change arising from environmental and anthropogenic impacts." Thesis, King's College London (University of London), 2015. http://kclpure.kcl.ac.uk/portal/en/theses/dune-transformations-driven-by-vegetation-change-arising-from-environmental-and-anthropogenic-impacts(2ecd0b0b-de76-4a3a-938d-8823b63674e9).html.

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Parabolic dunes are one of a few common aeolian landforms that are highly controlled by eco-geomorphic interactions. Parabolic dunes, on the one hand, can be developed from highly mobile dune landforms, barchans for instance, in an ameliorated vegetation condition; or on the other hand, they can be reactivated and transformed back into mobile dunes due to vegetation deterioration. The development and transformations of parabolic dunes are also highly sensitive to changes in many environmental factors such as precipitation, temperature, wind regime, as well as changes in land management and oth
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Osunmadewa, Babatunde A., E. Csaplovics, A. Majdaldin R, D. Aralova, and C. O. Adeofun. "Regional assessment of trends in vegetation change dynamics using principal component analysis." SPIE, 2016. https://tud.qucosa.de/id/qucosa%3A35111.

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Vegetation forms the basis for the existence of animal and human. Due to changes in climate and human perturbation, most of the natural vegetation of the world has undergone some form of transformation both in composition and structure. Increased anthropogenic activities over the last decades had pose serious threat on the natural vegetation in Nigeria, many vegetated areas are either transformed to other land use such as deforestation for agricultural purpose or completely lost due to indiscriminate removal of trees for charcoal, fuelwood and timber production. This study therefore aims at ex
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Flatley, William Truetlen. "Successive Land Surveys as Indicators of Vegetation Change in an Agricultural Landscape." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/44202.

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A series of anthropogenic disturbance conditions have altered the vegetation of the southern Appalachians during the past 200-years. The objective of this research was to identify the nature and timing of these vegetation changes in order to better understand the underlying causes. A total of 304 land surveys were collected for a small agricultural watershed from early settlement in 1787 through to the present day. Witness corners recorded tree species, shrubs, stumps, snags and non vegetative markers. Types of witness corners were tallied and tested for shifts in frequency across time periods
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Carlson, Charles Thomas. "Land use history and vegetation change on the Point Reyes Peninsula, California /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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Lee, S. E. "Modelling interactions between climate and global vegetation in response to climate change." Thesis, University of Sheffield, 1997. http://etheses.whiterose.ac.uk/2063/.

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Climate change associated with increasing concentrations of the greenhouse gas, carbon dioxide(CO2), is expected to lead to an increase in global mean temperature of between 1 and 3.5 deg C by the end of the 21st century, with regional changes in rainfall and humidity. This thesis is concerned with modelling the effects of a changing climate and atmospheric C02 concentration on global vegetation. The process-based model, DOLY (Dynamic glObal phtogeographY), is used. It is able to operate using three climate variables, two soil variables and an atmospheric CO2 concentration. Its outputs are lea
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Kliman, Douglas Hartley 1963. "Detection of phenological change in cultivated and uncultivated vegetation with multispectral video." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276600.

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Multispectral video (MSV) images were used to measure phenological changes in cultivated and uncultivated vegetation communities surrounding the Palo Verde Nuclear Generating Station (PVNGS). Multispectral video imagery was acquired from aircraft on seven dates between the middle of June and the end of September, 1986. Images representing three sites near the PVNGS were selected to calculate Ratio Vegetation Index (RVI) values for seven surface cover types. Mean RVI values were tested sequentially for change, plotted as a function of time, and then compared to a moisture index and the crop cal
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Kebede, Almaz Tadesse. "Sustaining the Allideghi Grassland of Ethiopia: Influence of Pastoralism and Vegetation Change." DigitalCommons@USU, 2009. https://digitalcommons.usu.edu/etd/309.

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The Allideghi Wildlife Reserve in the Amibara District of Afar Regional State, Ethiopia, has international significance for harboring endangered Grevy's Zebra and other wildlife dependent on grasslands. The reserve is increasingly used by pastoral people and their herds. Impacts of livestock on native vegetation include direct effects of grazing and indirect effects from livestock-facilitated dispersal of an invasive plant, Prosopis juliflora. The main research objective was to determine effects of pastoralism and vegetation change on prospects for sustaining the Allideghi Wildlife Reserve as
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Adams, Terence Gilbert. "The late holocene vegetation history of Lake Farm, South Eastern Cape Province, South Africa." Master's thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/14715.

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Bibliography: p. 155-175.<br>Palynological analysis of organic sediments from a freshwater lake near Port Elizabeth (34°S,25°30'E) has provided a high- resolution vegetation history of the area for the last 2200 years. Detailed identification and counting of the fossil pollen resulted in the generation of a pollen diagram. Changing frequencies in fossil pollen over time are represented, and inferences are made regarding environmental conditions which influenced the vegetation. A detailed narrative of vegetation history in response to environmental change is presented, and this is compared to
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Berardi, Andrea. "Biophysical modelling of the Astroni Nature Reserve, Naples, Italy." Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321946.

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Flitcroft, Catherine Esther. "Holocene blanket peat development in south west Scotland : the roles of human activity, climate change and vegetation change." Thesis, University of Edinburgh, 2006. http://hdl.handle.net/1842/9992.

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This thesis examines the role of autogenic and allogenic forces in determining the timing and development of blanket peat initiation and how the occurrence and growth of blanket peat subsequently constrains human activities. A number of factors involved in the formation of blanket peat have been defined in the literature, in particular the roles of climate change, soil processes and anthropogenic effects, tested in this thesis from a typical peat-covered upland in south west Scotland. Tests are developed from a multi-proxy approach and by comparing peat-stratigraphic and palaeoecological recor
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Cohn, Teresa Helene. "Settlement, identity and environment: understanding processes of vegetation change along the Wind River." Diss., Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/cohn/CohnT1210.pdf.

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Contemporary research concerning wildlands and wildlife of the American West increasingly calls for greater complexity in understanding human-environmental relationships. This dissertation investigates a culturally diverse portion of Greater Yellowstone in order to complicate these dialogues. It explores a riparian corridor along the Wind River, a region permanently settled by Eastern Shoshone, Northern Arapaho and Euro-American residents in the late 1800s and early 1900s. Using the Wind River Basin as a case study, this research observes the landscape through three different lenses: settlemen
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