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Dissertations / Theses on the topic 'Semi-productivity'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Rath, Thomas. "Nutrition and productivity of milking cattle on a semi-arid rangeland in West Africa /." Stuttgart : Grauer, 1999. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009038584&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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2

Dickson, M. Nyariki. "Resource availability and productivity, farmer efficiency and household food security in semi-arid Kenya." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363696.

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3

Ngulube, Elisha Stephen. "Prediction of timber harvesting productivity for semi-mechanised systems in Viphya forest plantations, Malawi." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/30939.

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At least 200,000 m3 of timber are harvested annually using semi-mechanised harvesting systems (SMS) on the Viphya forest plantations in Malawi. Although these systems have long been used on the Viphya, no investigation on their productivity has so far been reported. The absence of local productivity models created uncertainty about the importance of sitebased factors that influence timber harvesting productivity of these systems on the Viphya. Secondly, there is paucity of information regarding the appropriate timber harvesting systems for production maximisation and cost minimisation. T

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4

Niechayev, Nicholas Alexander. "The Environmental Productivity and Photosynthetic Light Response of Agave americana:A Potential Semi-Arid Biofuel Feedstock." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1468518584.

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5

Frei, Michael [Verfasser]. "Studies on Productivity and Environmental Effects of the Integration of Semi-Intensive Fish Culture in Rice Field Ecosystems / Michael Frei." Aachen : Shaker, 2007. http://d-nb.info/1166507777/34.

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6

Biot, Y. "Forecasting productivity losses caused by sheet and rill erosion in semi arid rangeland : A case study from communal areas of Botswana." Thesis, University of East Anglia, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383247.

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7

Volakakis, Nikolaos. "Development of strategies to improve the quality and productivity of organic and 'low input' olive production systems in semi-arid Mediterranean regions." Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610977.

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The project reported here took place in Messara plain, Crete, Greece, a semi-arid Mediterranean region. It involved a literature review (Chapter 1), a field survey (Chapter 2), two field experiments (Chapters 3 and Chapter 4) and associated laboratory analyses. The survey took place in three crop years using pairs of neighbouring organic and conventional commercial olive orchards of the cultivar Koroneiki at the valley and the surrounding hills. Both field experiments took place in a 2.4 ha table olive orchard consisted of trees of Kalamon and Manzanila olive cultivars for three crop years. Re

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8

Ndhlovu, Thabisisani. "Impact of Prosopis (mesquite) invasion and clearing on ecosystem structure, function and agricultural productivity in semi-arid Nama Karoo rangeland, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6751.

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Thesis (MScConEcol (Conservation Ecology and Entomology))--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: I evaluated the impact of Prosopis invasion and clearing on ecological structure, function and agricultural productivity in heavily grazed Nama Karoo rangeland on two sheep farms near the town of Beaufort West in the Western Cape Province of South Africa. My aims were to (1) determine the effects of invasion and clearing on rangeland vegetation composition, diversity (alien and indigenous species richness) and structure (alien and indigenous species cover), soil vegetatio

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9

Kumpula, J. (Jouko). "Productivity of the semi-domesticated reindeer (Rangifer t. tarandus L.) stock and carrying capacity of pastures in Finland during 1960-1990's." Doctoral thesis, University of Oulu, 2001. http://urn.fi/urn:isbn:9514265556.

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Abstract Although the present day management of semi-domesticated reindeer (Rangifer t. tarandus L.) and its operational environment have changed from the past, knowledge of the ecological mechanisms typical of traditional herding is still important. The main objective of this study was to examine factors related to stock productivity and carrying capacity of pastures in the Finnish semi-domesticated reindeer management area during 1960-1990's in order to clarify the basis of the present management strategies in Finland. In the Oraniemi district, before 1987, calf production was more a

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10

Gao, Ying Zhi [Verfasser]. "Influences of different land use management on net primary productivity and belowground carbon allocation in a semi-arid Inner Mongolia steppe / Yingzhi Gao." Kiel : Universitätsbibliothek Kiel, 2008. http://d-nb.info/1019630868/34.

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11

Bradford, John B. "The influence of climate, soils, and land-use on primary productivity and cheatgrass invasion in semi-arid ecosystems submitted by John B. Bradford." Access citation, abstract and download form; downloadable file 13.42 Mb, 2004. http://wwwlib.umi.com/dissertations/fullcit/3131658.

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12

Masikati, Patricia [Verfasser]. "Improving the water productivity of integrated crop-livestock systems in the semi-arid tropics of Zimbabwe : an ex-ante analysis using simulation modeling / Patricia Masikati." Bonn : Universitäts- und Landesbibliothek Bonn, 2011. http://d-nb.info/1016183801/34.

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13

Schiborra, Anne Kathrin [Verfasser]. "Short-term effects of defoliation on herbage productivity and herbage quality in a semi-arid grassland ecosystem of Inner Mongolia, P.R. China / Anne Kathrin Schiborra." Kiel : Universitätsbibliothek Kiel, 2010. http://d-nb.info/1019951974/34.

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14

Tulsankar, Smita Sadanand. "Role of natural productivity in growth performance and health of marron (Cherax cainii, Austin 2002) reared under semi-intensive aquaculture system and controlled laboratory conditions." Thesis, Curtin University, 2021. http://hdl.handle.net/20.500.11937/86727.

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The research from commercial marron ponds and laboratory–based experiments investigated the multi-facet interactions among seasons, plankton abundance and diversity with selected dissolved trace elements and finally their impact on marron yield, health and characterization of the gut microbiome. The results showed that trace element supplementation altered the plankton density, species diversity and marron gut microbiota and finally the presence of zooplankton in the culture system reflected the enhanced marron growth and health.

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15

Souza, Carlos Henrique de. "Perfis sanitário e social da ovinocaprinocultura do oeste potiguar." Universidade Federal Rural do Semi-Árido, 2016. http://bdtd.ufersa.edu.br:80/tede/handle/tede/680.

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Submitted by Socorro Pontes (socorrop@ufersa.edu.br) on 2017-05-02T15:14:06Z No. of bitstreams: 1 CarlosHS_TESE.pdf: 942208 bytes, checksum: e19ab9490967b84c569ba6458a95e6cb (MD5)<br>Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-05-02T15:22:43Z (GMT) No. of bitstreams: 1 CarlosHS_TESE.pdf: 942208 bytes, checksum: e19ab9490967b84c569ba6458a95e6cb (MD5)<br>Approved for entry into archive by Vanessa Christiane (referencia@ufersa.edu.br) on 2017-05-02T15:30:28Z (GMT) No. of bitstreams: 1 CarlosHS_TESE.pdf: 942208 bytes, checksum: e19ab9490967b84c569ba6458

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16

From, Tatiana [Verfasser], Johannes [Akademischer Betreuer] Isselstein, Christoph [Akademischer Betreuer] Leuschner, and Nicole [Akademischer Betreuer] Wrage-Mönnig. "Spatial scale, plant identity and management effects on the diversity-productivity relationship in a semi-natural grassland / Tatiana From. Gutachter: Johannes Isselstein ; Christoph Leuschner ; Nicole Wrage-Mönnig. Betreuer: Johannes Isselstein." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2014. http://d-nb.info/106414845X/34.

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17

Eisfelder, Christina. "Modelling Net Primary Productivity and Above-Ground Biomass for Mapping of Spatial Biomass Distribution in Kazakhstan." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-119964.

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Biomass is an important ecological variable for understanding the responses of vegetation to the currently observed global change. The impact of changes in vegetation biomass on the global ecosystem is also of high relevance. The vegetation in the arid and semi-arid environments of Kazakhstan is expected to be affected particularly strongly by future climate change. Therefore, it is of great interest to observe large-scale vegetation dynamics and biomass distribution in Kazakhstan. At the beginning of this dissertation, previous research activities and remote-sensing-based methods for biomass

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18

Dunham, Natasha Robin. "Influence of hydrological and environmental conditions on mangrove vegetation at coastal and inland semi-arid areas of the Gascoyne region." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2014. https://ro.ecu.edu.au/theses/1406.

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Mangrove stands are uncommon within semi-arid climates and rare within inland systems. It is uncertain whether the same environmental variables influence mangroves growing in a semi-arid climate as the trees growing in tropical and sub-tropical areas. Field studies conducted on the ecophysiological responses of the mangrove species Avicennia marina are few; however hydrological regimes are considered the key factor influencing mangrove stand zonation, structure and individual tree growth. The Gascoyne region of Western Australia provides a unique opportunity to investigate whether mangroves gr

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19

Souza, José Antonio de. "Um estudo sobre a produtividade total dos fatores em setores de diferentes intensidades tecnólogicas." reponame:Repositório Institucional do FGV, 2009. http://hdl.handle.net/10438/4257.

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Made available in DSpace on 2010-04-20T20:58:08Z (GMT). No. of bitstreams: 4 JOSE_ANTONIO_DE_SOUZA_DISSERTACAO_VERSAO_FINAL.pdf.jpg: 17403 bytes, checksum: e10358d7e12871cef2b0316788b3e376 (MD5) JOSE_ANTONIO_DE_SOUZA_DISSERTACAO_VERSAO_FINAL.pdf.txt: 192545 bytes, checksum: bd219ee8e4077c7534538b47349df885 (MD5) license.txt: 4810 bytes, checksum: 5a0053361f1e90aa2d2231437718e9df (MD5) JOSE_ANTONIO_DE_SOUZA_DISSERTACAO_VERSAO_FINAL.pdf: 761735 bytes, checksum: 652c91e503be04b555cfabf4dcbabf1e (MD5) Previous issue date: 2009-11-26T00:00:00Z<br>The basic hypothesis and core of this dissert

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20

Paulo, J?ria Leilane de Albuquerque. "Caracteriza??o comportamental e avalia??o da qualidade de leite em caprinos da ra?a saanen no semi?rido nordestino." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17245.

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Made available in DSpace on 2014-12-17T15:36:44Z (GMT). No. of bitstreams: 1 JoriaLAP_TESE.pdf: 3654809 bytes, checksum: e49a3ecd7479cf1730558b5f467dc3c1 (MD5) Previous issue date: 2014-04-07<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>Goats are social animals which groups are organized from dominance hierarchies, established by agonistic behaviors. The quality and productivity of the goat s milk can be influenced by the dominance hierarchy. In this context, the objectives of our work were describe the social and food behavior of Saanen goats in a semi-extensive product

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21

Tanan, Tamara Torres. "Fenologia e caracteriza??o dos frutos de esp?cies de Physalis cultivadas no semi?rido baiano." Universidade Estadual de Feira de Santana, 2015. http://localhost:8080/tede/handle/tede/156.

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Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2015-08-04T00:46:23Z No. of bitstreams: 1 Disserta??o_Tamara_Tana.pdf: 823783 bytes, checksum: b47d6203bd51aea839cf2df6a5296331 (MD5)<br>Made available in DSpace on 2015-08-04T00:46:23Z (GMT). No. of bitstreams: 1 Disserta??o_Tamara_Tana.pdf: 823783 bytes, checksum: b47d6203bd51aea839cf2df6a5296331 (MD5) Previous issue date: 2015-02-26<br>Physalis genus belongs to the Solanaceae family, and shows species with great economic potential due to the production of secondary metabolites and their fruits rich in vitamins

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22

Wong, Lai-kin Cindy. "A study of employee attitude towards performance pledge in government departments and semi-government departments /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18836847.

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23

Sherefa, Muzein Bedru. "Remote Sensing & GIS for Land Cover/ Land Use Change Detection and Analysis in the Semi-Natural Ecosystems and Agriculture Landscapes of the Central Ethiopian Rift Valley." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1173870635741-98410.

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Technical complexities and the high cost of satellite images have hindered the adoption of remote sensing technology and tools for nature conservation works in Ethiopia as in many developing countries. The terrestrial and aquatic ecosystems in Abijjata Shala Lakes National Park (ASLNP) and the Important Bird Areas (IBAs) around the park are considered to be one of the most important home ranges for birds. However, little is known about the effect of land use/land cover (LULC) dynamics, due to lack of technical know how and logistical problems. However, it has been shown in this study that soph

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24

Sherefa, Muzein Bedru. "Remote Sensing & GIS for Land Cover/ Land Use Change Detection and Analysis in the Semi-Natural Ecosystems and Agriculture Landscapes of the Central Ethiopian Rift Valley." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1173870635741-98410.

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25

Tsung-Yao, Chen, and 陳聰堯. "Efficiency, Technological Progress and Productivity Growth - The Empirical Results Analysis for Taiwan Semi-Conductor Industry." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/37533886992189043155.

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26

From, Tatiana. "Spatial scale, plant identity and management effects on the diversity-productivity relationship in a semi-natural grassland." Doctoral thesis, 2013. http://hdl.handle.net/11858/00-1735-0000-0023-996E-8.

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27

Kahmen, Ansgar [Verfasser]. "Biodiversity and ecosystem functioning in semi-natural montane grasslands: effects on productivity, nitrogen partitioning and stability / von Ansgar Kahmen." 2004. http://d-nb.info/975196421/34.

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28

Klabi, Rim. "Contribution des légumineuses, des champignons endophytes et mycorhiziens dans la nutrition azotée des prairies indigènes semi-arides." Thèse, 2015. http://hdl.handle.net/1866/13588.

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Les prairies indigènes présentent une source importante d'alimentation pour le pâturage du bétail dans les prairies Canadiennes semi-arides. L'addition de légumineuses fixatrices d'azote et de phosphore dans les prairies indigènes peut améliorer la productivité et la valeur nutritive de fourrage. Ces pratiques peuvent induire des modifications de la structure et de la diversité des communautés fongiques du sol, ce qui peut en retour avoir un impact sur la production et le contenu nutritionnel du fourrage. L’objectif de cette étude était de développer un système de pâturage à bas niveau d’in

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29

Eisfelder, Christina. "Modelling Net Primary Productivity and Above-Ground Biomass for Mapping of Spatial Biomass Distribution in Kazakhstan." Doctoral thesis, 2012. https://tud.qucosa.de/id/qucosa%3A27091.

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Biomass is an important ecological variable for understanding the responses of vegetation to the currently observed global change. The impact of changes in vegetation biomass on the global ecosystem is also of high relevance. The vegetation in the arid and semi-arid environments of Kazakhstan is expected to be affected particularly strongly by future climate change. Therefore, it is of great interest to observe large-scale vegetation dynamics and biomass distribution in Kazakhstan. At the beginning of this dissertation, previous research activities and remote-sensing-based methods for biomass

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30

"Assessing Outdoor Algal Cultivation in Panel and Raceway Photobioreactors for Biomass and Lipid Productivity." Doctoral diss., 2015. http://hdl.handle.net/2286/R.I.34797.

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abstract: Over the past decade, there has been a revival in applied algal research and attempts at commercialization. However, the main limitation in algal commercialization is the process of cultivation, which is one of the main cost and energy burdens in producing biomass that is economically feasible for different products. There are several parameters that must be considered when growing algae, including the type of growth system and operating mode, preferred organism(s), and many other criteria that affect the process of algal cultivation. The purpose of this dissertation was to assess ke

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31

Kurzatkowski, Dariusz. "Seasonality and dynamics of the semi-deciduous transition forests of the Araguaia floodplain, Brazil." Doctoral thesis, 2017. http://hdl.handle.net/11858/00-1735-0000-0023-3E94-1.

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32

(19140385), Grant Xinghong Zhu. "Optimising wheat production through management in the semi-arid tropics of Central Queensland." Thesis, 2001. https://figshare.com/articles/thesis/Optimising_wheat_production_through_management_in_the_semi-arid_tropics_of_Central_Queensland/26308264.

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<p dir="ltr">Optimisation of wheat productivity encompasses the improvement of total aboveground dry matter (AGDM) for hay and grain yield, harvest index, and grain quality, through improved efficiencies of water and nutrient use (WUE and NUE s leads to increasing profitability and sustainability of farming systems. To achieve this objective, defoliation experiments over three seasons (1997, 1998 and 1999) and fertiliser treatments on wheat during the same period were conducted at Biloela, Jambin and Alton Downs in Central Queensland (CQ).</p><p dir="ltr">Overall, defoliation at the middle til

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