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Dissertations / Theses on the topic 'Savannas – Management'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Lohmann, Dirk. "Sustainable management of semi-arid African savannas under environmental and political change." Phd thesis, Universität Potsdam, 2012. http://opus.kobv.de/ubp/volltexte/2013/6506/.

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Drylands cover about 40% of the earth’s land surface and provide the basis for the livelihoods of 38% of the global human population. Worldwide, these ecosystems are prone to heavy degradation. Increasing levels of dryland degradation result a strong decline of ecosystem services. In addition, in highly variable semi-arid environments changing future environmental conditions will potentially have severe consequences for productivity and ecosystem dynamics. Hence, global efforts have to be made to understand the particular causes and consequences of dryland degradation and to promote sustainabl

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2

Petersen, Leif Michael. "Granivores as ecosystem regulators of woody plant increasers in semi-arid Savannas of the Lowveld, South Africa." Thesis, University of the Western Cape, 2006. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8725_1210750329.

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<p>In recent years, a global trend of increasing woody vegetation densities in semi-arid savanna habitats has been recorded, commonly described in South Africa as 'bush encroachment'. The shrubs and trees that do this (Increasers) have wrought significant economic and ecological impacts upon carrying capacities of large areas of savannas. This occurs, as suitable grazing areas are incrementally engulfed in shrubs and trees establishing new equilibria, from open savannas (essentially grasslands with scattered trees) into closed woodlands (treelands with scattered grasses). This thesis demonstra

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3

Lohmann, Dirk [Verfasser], and Florian [Akademischer Betreuer] Jeltsch. "Sustainable management of semi-arid African savannas under environmental and political change / Dirk Lohmann. Betreuer: Florian Jeltsch." Potsdam : Universitätsbibliothek der Universität Potsdam, 2013. http://d-nb.info/1034204602/34.

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4

Chen, Hui, Cody L. Stropki, Peter F. Ffolliott, and Gerald J. Gottfried. "A Geographically-Referenced Multiple-Resource Data Management System for the Oak Savannas of the Malpai Borderland Region." Arizona-Nevada Academy of Science, 2009. http://hdl.handle.net/10150/296703.

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5

Duffin, Kristina I. "A interpretation of palaeoecological records and their relevence to landscape management in the savannas of the Kruger National Park, South Africa." Thesis, University of Oxford, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.508775.

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6

Masiza, Wonga. "Monitoring changes in vegetation distribution to ascertain the extent of degradation in the savannas of Nkonkobe Local Municipality, Eastern Cape, South Africa." Thesis, University of Fort Hare, 2016. http://hdl.handle.net/10353/2027.

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Savanna degradation is an environmental problem occurring in most countries around the world and it poses threats to biodiversity conservation, the food industry, and other economic sectors. According to FAO, South Africa’s rangelands exhibit the highest rate of fragmentation in comparison to range ecosystems in neighbouring countries including Lesotho and Swaziland, and consensus among researchers is that communal rangelands are more degraded than commercial rangelands. Although researchers and communities have identified the occurrence of land degradation in communal savannas at a local scal

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7

Naah, Ngmaadaba John-Baptist S. [Verfasser], Boris [Gutachter] Braun, and Anja [Gutachter] Linstädter. "Towards an understanding and harnessing of local ecological knowledge of forage resources for sustainable rangeland management in West Africa’s Sudanian Savannas / John-Baptist S. Naah Ngmaadaba ; Gutachter: Boris Braun, Anja Linstädter." Köln : Universitäts- und Stadtbibliothek Köln, 2016. http://d-nb.info/1131799879/34.

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8

Osei-Amaning, E. "Management of Vitellaria paradoxa in Guinea savanna rangelands in Ghana." Thesis, Bangor University, 1996. https://research.bangor.ac.uk/portal/en/theses/management-of-vitellaria-paradoxa-in-guinea-savanna-rangelands-in-ghana(8ebb01bb-84ff-4365-9f49-1a881953db43).html.

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From 1993-1994, a study of Vitellaria paradoxa was carried out. This study involved an in-depth review of biological and ecological information on Vitellatia throughout its range. Stand studies and an analysis of the climate in relation to fire risk. There were also experimental investigations of germination and pollination. All field studies were at the site of the Cocoa Research Institute outstation at Bole. Stand characteristics of Vitellaria (>10 cm dbh) at the 68 kM2 plot of the Cocoa Research Institute's Sheanut Research Station, Bole were examined in two strata distinguished on the basi

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9

Hildebrandt, Walter Ralph. "Management and reproduction of the African savanna buffalo (Syncerus caffer caffer)." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86731.

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Thesis (MScAgric)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: The aim of this study was to evaluate the current managerial practices as used by African Savanna buffalo (Syncerus caffer caffer) farmers. Consequently, the best management practices would be combined to formulate a basic management plan to farm captive buffalo. The distribution of buffalo throughout South Africa was also investigated and each province was considered separately for different types of buffalo (Kruger also known as project; Addo and other) and different disease statuses (Foot and Mouth; TB; Corridor dis

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10

Araujo, Fernando Dantas de. "The ecology, ethnobotany and management of Caryocar brasiliense Camb. around Montes Carlos, MG, Brazil." Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.259769.

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11

Cruz, Diego Lima de Souza. "Atributos físicos de argissolo amarelo sob floresta e savana naturais e cultivados com pastagem em Roraima." Universidade Federal de Roraima, 2012. http://www.bdtd.ufrr.br/tde_busca/arquivo.php?codArquivo=134.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>O estado de Roraima apresenta uma ampla diversidade geomorfológia e pedológica, os quais são resultado da combinação dos fatores de formação do solo. O Estado pode ser dividido em três grandes ecossistemas: as savanas, as florestas e as campinaranas, todos com características bastante contrastantes. A atividade pecuária está inserida nessa diversidade, sendo muitas vezes associada à degradação física do solo. Dentro deste contexto, o presente trabalho foi realizado com o objetivo de avaliar e comparar as propriedades físico-hídri

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12

Yarrish, Lauren E. "Butterfly Conservation in Oak Savanna: Site Characterization, Nectar Resources, and the Effects of Management." Bowling Green State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1300738349.

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13

Perlut, Noah G. "Effects of Hayfield Management on Grassland Songbirds:." ScholarWorks @ UVM, 2007. http://scholarworks.uvm.edu/graddis/178.

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Over the last 40 years North American grassland bird populations have declined more than any other bird guild. This trend is especially evident in Vermont, where species experiencing precipitous declines include the Savannah Sparrow (Passerculus sandwichensis) and Bobolink (Dolichonyx oryzivorus). These declines are linked to habitat loss due to reforestation and suburbanization as well as the intensification of grassland management. Modern grassland management includes earlier first-haying dates (late-May) and shorter intervals between haying events (35 days). These management practice

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14

Walker, John Andrew. "Implementing an integrated multijurisdictional emergency management system: a case study at the Savannah River Plant." Thesis, Virginia Polytechnic Institute and State University, 1986. http://hdl.handle.net/10919/94493.

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The combination of modern, technological hazards and overlapping government jurisdictions requires coordinated, multijurisdictional emergency management. The Three Mile Island incident clearly demonstrated the impact of technical hazards and the importance of intergovernmental cooperation. A method is required to understand intergovernmental considerations in emergency management. This thesis derives such a method by proposing a three component model. The first component considers that all intergovernmental relationships are dynamic. Efforts to describe intergovernmental systems in terms of

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15

Dew, L. Alexander. "Monitoring and managing Chromolaena odorata in a South African savanna reserve : Evaluating the efficacy of current control programs in response to ecological factors and management protocols." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-104590.

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Biological invasions have increased dramatically in the past centuries and are one of the greatest threats to biodiversity today. Invasions occur when organisms are introduced at a location to which they are non-native, and they reproduce and spread, causing damage to the environment. Chromolaena odorata, a herbaceous shrub from the Americas, is one of the most widespread and problematic invasive plant species in the tropics and sub-tropics. The plant is a serious problem in South Africa, where invasive species threaten the nation’s biodiversity and limited water supply. This study combined tr

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16

Zida, Didier. "Impact of forest management regimes on ligneous regeneration in the Sudanian savanna of Burkina Faso /." Umeå : Dept. of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200766.pdf.

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17

Gustafson, Gregory Gene. "Effects of Management Practices on Terrestrial Vertebrate Diversity and Abundance in an Oak Savanna Ecosystem." Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1523016712853504.

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18

Rodrigues, Tarcisio Gomes. "Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima." Universidade Federal de Roraima, 2013. http://www.bdtd.ufrr.br/tde_busca/arquivo.php?codArquivo=178.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>O objetivo da pesquisa foi avaliar os efeitos de dois tipos de manejo do solo e rotação de culturas na qualidade física e química de um Latossolo amarelo distrófico na savana de Roraima. O experimento seguiu um delineamento bloco casualizado com quatro repetições, dois tipos de manejo do solo, (plantio convencional-PC e plantio direto -PD), quatro tratamentos representado por quatro rotações de cultura, e uma área adjacente como referência. As amostras de solo foram coletadas em quatro diferentes profundidades: de 0,0 a 5 cm; 5 a 1

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19

Weltzin, Jake Frederick 1964. "Biotic and abiotic constraints on shifts in temperate savanna ecotones at lower treeline." Diss., The University of Arizona, 1998. http://hdl.handle.net/10150/288779.

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In contrast to documented increases in woody plant dominance of former savannas and grasslands of North America, oak (Quercus L.) savannas that form lower treelines in the southwestern United States and northwestern Mexico have been relatively stable over the past millennium. This research identified potential biotic and abiotic constraints on seedling recruitment of Quercus emoryi Torr. (Emory oak) within the context of potential shifts in lower treeline. Field surveys were used to describe seedling distribution at and below lower treeline, and to determine the potential for acorn dispersal f

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20

Considine, Cody Douglas. "Fire History and Current Stand Structure Analysis of a Midwestern Black Oak Sand Savanna." OpenSIUC, 2009. https://opensiuc.lib.siu.edu/theses/91.

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Management and restoration of black oak dominated sand savannas often rely on historic vegetative descriptions (settler accounts, surveyor notes, aerial photographs). It is commonly assumed that fire alone maintains savanna structure and composition, however little information is known about the specific fire frequency needed to maintain these systems. The objective of this study was to quantify and correlate characteristics of stand structure with fire history of the Kankakee Sands savannas in northeastern Illinois. Fire history chronologies were determined through dendrochronological methods

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21

Kgosikoma, Olaotswe Ernest. "Understanding the savanna dynamics in relation to rangeland management systems and environmental conditions in semi-arid Botswana." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/5874.

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This thesis investigates the effects of rangeland management systems on savanna ecosystems under different environmental conditions in Botswana, Southern Africa. The soil sampling and vegetation assessment were conducted in twenty–three transects located in communal and ranching grazing lands across three sites. Pastoralists were also interviewed on vegetation change on their respective grazing lands. Soil texture, pH, bulk density and soil organic carbon differed between sites, but not between communal and ranching lands. Soil organic carbon was positively affected by soil clay content. The h

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22

Musso, Carolina. "Environmental factors, clipping and fire: effects on cerrado (Brazilian savanna) native and invasive grasses." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/14084.

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Doutoramento em Biologia<br>The Brazilian Cerrado houses a hugely diverse biota and is considered a conservation hotspot. One of the greatest threats to the integrity of this ecosystem is introduced African grasses, which can competitively exclude native grasses and cause changes in the microclimate and other disturbances. The Cerrado is a mosaic vegetation that provides different combinations, both spatially and temporally, of conditions that can become natural stressors to the herbaceous vegetation (water, nutrient and light availability). These mosaics are reflected in differences in

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23

Britz, Mari-Louise. "The effects of soil type and management strategy on vegetation structure and function in a semi-arid savanna, South Africa." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/53768.

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Thesis (MSc)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: Bush encroachment in savannas leads to reduced diversity, productivity and profitability of rangelands. This holds important implications for the livestock and eco-tourism industries, as well as for subsistence ranchers in the South African semi-arid savannas, who depend on this vegetation type for economic and livelihood purposes. Soil moisture, nutrients, rue and herbivory are generally regarded as the principal factors determining vegetation structure and function within savannas. The factors and processes involved in t

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24

Entrup, Alex K. "Restoration of a wet longleaf pine (Pinus palustris) savanna in southeast Louisiana: Burning toward reference conditions." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2068.

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This study quantifies the changes in vegetation composition and structure of a fire-excluded Pinus palustris (longleaf pine) wetland savanna restoration site in southeastern in comparison to a proximate contemporary reference site. The restoration site was invaded by hardwood species and off-site pines, and never underwent extensive soil disturbance. The restoration treatments involved logging across portions of the site and the reintroduction of fire across the entire site. All species present in 10m2 quadrats were recorded prior to treatment and throughout the 17 year study at reference and

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25

Warui, Charles Mwaura. "Impacts of wildlife and cattle grazing on spider (araneae) biodiversity in a highland savanna ecosystem, in Laikipia, Central Kenya." Thesis, Rhodes University, 2005. http://eprints.ru.ac.za/109/.

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26

Owoeye, Lawrence Gbadebo. "Evaluation of selected legumes for sustainable weed ecology/soil fertility/livestock management interactions in crop-livestock systems of the moist savannah of Nigeria." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/53741.

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Thesis (PhD)--Stellenbosch University, 2004.<br>ENGLISH ABSTRACT: This project aimed at enhancing the net benefit in production systems. It took a holistic approach to evaluate the potential interactions of herbaceous legumes in relation to weed dynamics, soil fertility and livestock management in the crop-livestock system in Nigeria. The project was carried out between 2000 and 2002 in two localities. These were the National Animal Production Research Institute (NAPRI) at Zaria in the northern Guinea savannah and the International Institute of Tropical Agriculture (IITA) at Ibadan in th

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Coulter, Melanie. "A multi-spatial-scale characterization of Lark Sparrow habitat and the management implications." Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1213657693.

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28

Nordal, Christian Edward. "A Spatial and Temporal Analysis of Bat Activity and Diversity Within a Heavily Fragmented Landscape." Bowling Green State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1465908162.

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Pickens, Bradley A. "THE CONSEQUENCES OF A MANAGEMENT STRATEGY FOR THE ENDANGERED KARNER BLUE BUTTERFLY." Bowling Green State University / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1149173870.

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30

Baldauf, Cristina 1978. "Ecology, conservation and sustainable management of Janaguba (Himatanthus drasticus; Apocynaceae) in the Brazilian savanna = Ecologia, conservação e manejo de Janaguba (Himatanthus drasticus; Apocynaceae) no cerrado brasileiro." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/315020.

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Orientadores: Flavio Antonio Maës dos Santos, Anete Pereira de Souza<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-23T14:51:42Z (GMT). No. of bitstreams: 1 Baldauf_Cristina_D.pdf: 5411904 bytes, checksum: 0b452c576f0ddde99b1c88164de1b175 (MD5) Previous issue date: 2013<br>Resumo: O resumo poderá ser visualizado no texto completo da tese digital<br>Abstract: The abstract is available with the full electronic document<br>Doutorado<br>Biologia Vegetal<br>Doutora em Biologia Vegetal

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Mabuza, Thembisile Veronicah. "Evaluating long term effects of fire frequency on soil seed bank composition and species diversity in a semi-arid , South African savanna." Thesis, University of Fort Hare, 2011. http://hdl.handle.net/10353/346.

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Fire is generally used as a management tool for different vegetation types such as savannas and grasslands in southern Africa. In the False Thornveld of the Eastern Cape, fire is commonly used to control bush encroachment and to increase grass production, as grasses are important source of forage for domestic livestock. At the University of Fort Hare farm in the Eastern Cape, a trial was set up in 1980 to investigate the effect of burning frequency on vegetation. There are six treatments replicated twice in a completely randomized design on a 100 m x 50 m plots. The treatments comprise no burn

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32

Liu, Feng. "Spatial pattern and uncertainty of soil carbon and nitrogen in a subtropical savanna landscape in southern Texas." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1609.

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33

Schetter, Timothy Andrew. "A Multiscale Spatial Analysis of Oak Openings Plant Diversity with Implications for Conservation and Management." Bowling Green State University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1334089503.

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34

Clark, Jennifer Wester. "Determining the pollination mechanism of a problematic invasive species in the Gulf South: Triadica sebifera." ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/td/2134.

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Understanding the ecology of invasive species is vital to curb the homogenizing of ecosystems, yet the pollination mechanisms of the Chinese tallow tree (Triadica sebifera) in its introduced habitat remain ambiguous. This study examines self-pollination, wind pollination, and flower-visiting insects of tallow in a bottomland hardwood forest and Longleaf pine savannah in the U.S. Gulf South. These data suggest that self-pollination and airborne pollination are possible, but likely rare occurrences, although the possibility of apoxisis was not investigated. Seed production in exclusion experimen

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35

Moreti, Dolorice. "Propriedades físicas e químicas de um latossolo vermelho, cultivado com feijão e algodão, sob diferentes sistemas de preparo, adubações e plantas de cobertura /." Ilha Solteira : [s.n.], 2002. http://hdl.handle.net/11449/98918.

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Orientador: Marlene Cristina Alves<br>Banca: Ronaldo Severiano Berton<br>Banca: Luiz Malcolm Mano de Mello<br>Resumo: O solo é um dos recursos de fundamental importância para a produção de alimentos. Sua conservação e recuperação, quando é visada a manutenção de sua qualidade, são primordiais para garantir o futuro das próximas gerações. O presente trabalho foi conduzido na Fazenda Experimental de Ensino e Pesquisa da Faculdade de Engenharia de Ilha Solteira- SP, localizada no município de Selvíria-MS, durante o ano agrícola 2001/02. O objetivo foi verificar as alterações de algumas propriedad

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Smit, Izak Petrus Johannes. "Artificial surface-water provision in a semi-arid savanna : a spatio-temporal analysis of herbivore distribution patterns in relation to artificial waterholes under different habitat, rainfall and management scenarios in the Kruger National Park, South Africa." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.612119.

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Moreti, Dolorice [UNESP]. "Propriedades físicas e químicas de um latossolo vermelho, cultivado com feijão e algodão, sob diferentes sistemas de preparo, adubações e plantas de cobertura." Universidade Estadual Paulista (UNESP), 2002. http://hdl.handle.net/11449/98918.

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Made available in DSpace on 2014-06-11T19:29:45Z (GMT). No. of bitstreams: 0 Previous issue date: 2002-12-13Bitstream added on 2014-06-13T18:39:47Z : No. of bitstreams: 1 moreti_d_me_ilha.pdf: 1425402 bytes, checksum: 8bd940b9b29695b569162022310de606 (MD5)<br>O solo é um dos recursos de fundamental importância para a produção de alimentos. Sua conservação e recuperação, quando é visada a manutenção de sua qualidade, são primordiais para garantir o futuro das próximas gerações. O presente trabalho foi conduzido na Fazenda Experimental de Ensino e Pesquisa da Faculdade de Engenharia de Ilha So

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Gotardo, Jackeline Tatiane. "Simulação e gestão da disponibilidade hídrica em bacia hidrográfica representativa do bioma Cerrado." Universidade Estadual do Oeste do Parana, 2011. http://tede.unioeste.br:8080/tede/handle/tede/435.

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Made available in DSpace on 2017-05-12T14:48:47Z (GMT). No. of bitstreams: 1 Jackeline Gotardo parte 1.pdf: 5941044 bytes, checksum: e7a46324b06508bcbeab16411c56e75d (MD5) Previous issue date: 2011-02-10<br>The simulation study of water availability and management of the basin was addressed in two ways. First estimate the water demand in climatological experimental catchment representative of the Savannah. Defined by the difference in the occurrence of potential evapotranspiration and precipitation minimal likely to occur on a scale ten days. In the estimation of potential evapotranspiration

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Berliner, Derek David. "An expert system approach to decision modelling for savanna management." Thesis, 2016. http://hdl.handle.net/10539/20662.

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A thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfillment of the requirements for the degree of Master of Science. Johannesburg 1990.<br>No abstract provided.

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Penderis, Caryn Anne. "Browse : quantity and nutritive value of evergreen and deciduous tree species in semi-arid Southern African savannas." Thesis, 2012. http://hdl.handle.net/10413/9905.

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Browse selection, intake, utilisation, palatability, quality and production are tightly linked and need to be considered together in trying to improve our understanding of browsing dynamics and the interactions between browsers and vegetation. Such an understanding is necessary in order to re-evaluate determinations of browser carrying capacities and evaluating actual and potential impacts of browsing animals on vegetation composition and diversity. Browser carrying capacity is determined by both the quantity and the nutritive value of forage. The measurement of browse quantity and nutritive v

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MacGregor, Shaun Donovan. "Influence of drought or elephant on the dynamics of key woodland species in a semiarid African savanna." Thesis, 2000. http://hdl.handle.net/10413/8763.

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Extensive drought - and elephant-related dieback of Colophospermum mopane and Acacia tortitis, respectively, offered an opportunity for increasing understanding of the causes of drought-related patch dieback, the factors influencing elephant utilization of woody plants, and the response of woody plants to both aforementioned determinants of savanna structure and function. The dendrochronological analysis of both species was undertaken to estimate potential rates of replacement, following extensive mortality. Areas of discrete dieback were compared with adjacent paired areas of 'healthy' vegeta

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Peel, Michael John Stephen. "Towards a predictive understanding of savanna vegetation dynamics in the eastern Lowveld of South Africa : with implications for effective management." Thesis, 2005. http://hdl.handle.net/10413/10157.

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The purpose of this study was to develop and test a predictive understanding of the vegetation dynamics of the Lowveld of South Africa (30°35'E to 30°40'E and 24°00'S to 25°00'S). The study covered about 5000 km2 in Adjacent Private Protected Areas (APPA) adjoining the Kruger National Park (KNP). Data gathering (800 sites; 23 properties) commenced in 1989 and those recorded up to 2004 are reported here. The value, both ecological and economic, of the wildlife and tourism industry dependent on this savanna region is discussed in both historical and current perspectives. A range of land-use obje

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Barrioz, Seth A. "Oak Savanna Restoration and Management in the Mid-South." 2010. http://trace.tennessee.edu/utk_gradthes/602.

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Oak savannas are among the most imperiled ecosystems in the United States as a result of habitat degradation and consequently, associated vegetation and wildlife communities have also declined. I evaluated savanna restoration strategies on twelve case studies in Tennessee and Kentucky. These case studies represented a broad range of disturbances and the most advanced savanna restoration sites within the region. I evaluated vegetation and breeding bird responses to landscape and overstory conditions across sites through a meta-analysis. Total grass and forb cover were influenced by overstor

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Willert, Jolene M. "Oak savanna restoration management techniques to inhibit exotic shrub reinvasion /." 2000. http://catalog.hathitrust.org/api/volumes/oclc/47732466.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 2000.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 138-142).

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Payne, Michelle Jennifer. "Above- and belowground competition in Savanna systems." Thesis, 2008. http://hdl.handle.net/10413/10749.

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The structure and composition of savanna vegetation is influenced by resource availability and disturbance. Grasses, a major component of savannas, influence this resource availability by competing directly with trees for light, water and soil nutrient resources. The direct causes of bush encroachment are not always apparent, but are commonly ascribed to overgrazing and consequent decreased grass competition. The interaction, both above and belowground, between tree and grass seedlings and the surrounding grass sward is dependant on many factors, such as soil depth, seedling species and sward

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Mulqueeny, Craig. "Spatial and temporal variation of the fire regime in Mkuzi Game Reserve." Thesis, 2006. http://hdl.handle.net/10539/1777.

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Faculty of Science School of Animal,Plants and Enviromental Science 0204279a craigm.kznwildlife.com<br>Fire is a key determinant of savanna dynamics, and would thus have a major influence on the vegetation dynamics of Mkuzi Game Reserve. Given this logic, it is an important and commonly used management tool in this reserve. Its main uses in the reserve are for either removing moribund material or for reducing woody plant encroachment, both of which normally entail dry season burns. As a consequence, fire often results in a green flush of vegetation that is highly favoured by grazing he

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Breebaart, Lorene. "Resource overlap within a guild of browsing ungulates in a South African savanna." Thesis, 2000. http://hdl.handle.net/10413/10258.

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Food selection by free-ranging black rhinoceros, eland, giraffe and kudu as well as the utilisation of vegetation types by the latter three browsers were investigated over an entire seasonal cycle, from June 1998 to July 1999, at Weenen Nature Reserve, KwaZulu-Natal. The study was aimed at determining the extent of resource overlap within this browser guild. Feeding habits of eland, giraffe and kudu were studied by direct observations, while a plant-based technique was used for black rhinoceros. Dung counts were conducted to monitor selection for vegetation types. Overlap was estimated by meas

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Tedder, Michelle Jennifer. "Dry woodland and savanna vegetation dynamics in the Eastern Okavango Delta, Botswana." Thesis, 2012. http://hdl.handle.net/10413/10005.

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The Okavango Delta is an extremely dynamic system with variable vegetation comprised of permanent swamps, seasonal swamps, dry islands, floodplains and dry grassland, savanna and woodland. The system is largely driven by the interaction between fire and the annual flood, which filters down from the Okavango River catchments in Angola. While extensive research has been conducted on the flood-driven vegetation little is known about the dry woodland and savanna regions bordering these flood-driven habitats. A taxonomic classification of woody species composition resulted in eleven vegetation type

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Harmse, Christiaan Johannes. "Evaluation of restoration and management actions in the Molopo savanna of South Africa :|ban integrative perspective / Christiaan Johannes Harmse." Thesis, 2013. http://hdl.handle.net/10394/10729.

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The loss of ecosystem resilience and rangeland (often referred to as veld in South Africa) productivity is a major problem in the semi-arid Savanna environments of southern Africa. The over-utilization of rangelands in the Molopo region of the North- West Province in South Africa has resulted in profound habitat transformations. A common regional indicator of rangeland degradation is the imbalance in the grasswoody ratio, characterized by a loss of grass cover and density with increased shrub or tree density. This can result in major reductions of rangeland productivity for the grazing animal,

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Calixto, Alejandro Antonio. "Implications of Relative Ant Abundance and Diversity for the Management of Solenopsis Invicta Buren with Broadcast Baits." 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2956.

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Higher densities of S. invicta in the United States relative to South America are explained mainly by the absence of natural enemies and low interspecific competition (IC). Despite advances in S. invicta management, broadcast insecticide baits remain as the primary tool for effective control. I studied interspecific interactions of ants and the use of baits on the management of S. invicta to test the following hypotheses: 1) relative abundance of native ants increases ~25% for bait treated sites compared to untreated, 2) behavioral dominance by S. invicta decreases ~10% in bait treated sites c

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