Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"savanna vegetation"”.
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Breeding Bird Response to Post Oak Savanna Restoration Seven Years Post Management In Eastern Texas
<p>Oak savannas were once an abundant vegetation type in the Midwestern United States that have now declined to <1% of their original distribution. Historically, natural disturbances such as periodic fire and grazing maintained oak savannas, but these have been reduced or eliminated, resulting in …
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Sustainable management of semi-arid African savannas under environmental and political change
… I particularly address the problem of semi-arid savanna degradation, which mostly occurs in form of woody plant encroachment. At this, I aim at finding viable sustainable management strategies and improving the general understanding of semi-arid savanna vegetation dynamics under conditions of …
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LONG-TERM OVERSTORY VEGETATION RESPONSES TO PRESCRIBED FIRE MANAGEMENT FOR LONGLEAF PINE AT BIG THICKET NATIONAL PRESERVE
… to species abundance data to examine changes in vegetation communities from a variety of prescribed fire treatments and controls. The vegetation data was separated by size class to include overstory, small tree, sapling, and seedling data. Across the size classes and treatments, the sandhill and …
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The macro-charcoal signature in Bwabwata National park, north-east, Namibia: Calibrating surface macro-charcoal with environmental variables
Fire is a major driver of vegetation patterns in the savanna biome of southern Africa and is hypothesized to allow for the tree-grass co-existence. However, to better understand the drivers of the savanna vegetation structure, more research is required. Furthermore, fire management can benefit …
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Assessment of carbon stock and selected soil fertility indicators in a bush encroached savanna at Erichsfelde farm, Namibia
… with systematic sampling along transects. For vegetation surveys in each site, five 20m x 10m plots were set up along two line transects, while established allometric equations were applied to related measured vegetation variables to estimate carbon stock. Additionally, five 1m x 1m soil pits …
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Up in smoke: biomass burning and atmospheric emissions in the Sudanian savanna of Côte d’Ivoire
… at the local and regional scales in the sudanian savanna of Côte d’Ivoire. Fire is an important management tool in farming and pastoral systems of West Africa. The climate change literature argues that biomass burning is an important source of greenhouse gases, chemically active gases, and …
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Ecology and morphology of the Kalahari tent tortoise, Psammobates oculifer, in a semi-arid environment
… tent tortoises over 13 months in semi-arid Savanna at Benfontein farm, Northern Cape Province, South Africa. In order to allow continuous monitoring of individuals, I attached radiotransmitters to males and females, split equally between two habitats, sites E (east) and W (west), with …
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Global change drivers and their impact on herbaceous, ant, and grasshopper assemblages in an African semi-arid savanna
Assessments of the anthropogenic threats to savanna ecosystems are primarily focussed on land use change, bush encroachment, and biological invasions. There is, however, very little understanding as to the threats from atmospheric pollution. South Africa is the major emitter of CO2 on the African …
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Firestorms in a mesic savanna-forest mosaic
Forests and savannas in a savanna-forest mosaic are maintained by positive feedback loops with fires, promoting fires in savannas and excluding fires in forests. Occasional extreme fires do however burn into forest edges and cause extensive mortality. So, while our understanding of bistability in …