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 13 of 13 for “"Waterholes"”.
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Elephant impacts on woody vegetation around artificial waterholes in Zambezi National Park, Zimbabwe
… particularly in relation to artificial waterholes. Sampling plots were located at different distances from four pumped waterholes in teak (Baikiaea) and Terminalia woodlands, the two main woody vegetation types recognised in the study area. Plots were set at 200, 500, 1000, 2000 and 4000 …
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Variations in the use of artificial waterholes by mammals at Okaukuejo and moringa in Etosha National Park, Namibia
The presence of artificial waterholes can alter local mammal biodiversity. Research on the impact of artificial waterholes on local mammal biodiversity and studies on the nocturnal patterns of water usage are limited in Namibia. In this study, large mammals that visited Okaukuejo and Moringa …
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Does the availability of shade limit use of water troughs by desert birds?
… by birds. An experiment was conducted at six waterholes using the Before-After, Control-Impact (BACI) design. After an initial baseline was established, three waterholes were shaded while the other three were left unshaded. Camera traps were used to record the pattern and intensity of water …
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Handling the heat: keeping water available for birds of the Tankwa Karoo Desert
… assessed whether providing artificial shade at waterholes can buffer impacts of high temperature by increasing accessibility of water to birds, potentially facilitating persistence of desert bird communities under climate change. I used a before-after control-impact experimental design to test …
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Chemical Signaling and Resource Use by African Elephants (Loxodonta Africana)
… receptive females, and in mixed associations. Waterholes serve to meet the physical needs of elephants and as areas for information exchange, especially for males in search of females. When widely spaced, waterholes may be impacted heavily by elephants. I examined elephant use of a permanent …
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Driving giants: spatial and temporal variables influencing giraffe movements in a private protected area
… were resource proximity, including distance to waterholes, NDVI, land cover, landforms, a predation risk variable, and a temporal variables, seasonality and time of day. There was high overlap between all lion and giraffe home ranges (73.9 to 92.2%), suggesting a high probability of encounters …
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Effect of Matriarchs on Group Interactions, Kinship Fitness, and Differences In Chemosensory Behavior of African Elephants (Loxodonta Africana)
… their role in interactions between families at waterholes in Addo Elephant National Park, South Africa. I analyzed three hypotheses for matriarchal effects on group fitness: a) older matriarchs provide greater access to resources, b) older matriarchs lead more social groups, or c) there is no …
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Investigating the habitat selection and dietary preferences of a largely sedentary population of blue wildebeest in the Kgalagadi Transfrontier Park – impacts of permanent surface water provision in a semi-arid environment
The continued provision of waterholes since the early 1930s has facilitated the formation of a largely sedentary population of blue wildebeest (Connochaetes taurinus) in the Kgalagadi Transfrontier Park. However, other environmental variables may influence the distribution of this resident herd …
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Waterhole Dynamics and Chemical Signals of African Elephants (<i> Loxodonta Africana </i>)
… by elephants. Intraspecific aggregation at waterholes can facilitate reproductive communication in elephants, often via chemical signals. This study also determined behaviorally via biological assays (June 2006-June 2007) whether four known insect pheromones identified in the ovulatory urine …
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Elephant space use in relation to ephemeral surface water availability in the eastern Okavango Panhandle, Botswana
… early dry season (April-June) when the ephemeral waterholes dried up. Elephants moved southwards towards the permanent waters of the Okavango River, where there are many human settlements and farms. Male HR sizes were found to be bigger than those of female elephants. Wet season (early and late) …
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Effect of Lion Calls on African Elephants (<i>Loxodonta Africana</i>) in Addo Elephant National Park, South Africa
… played from a remote speaker to elephants at waterholes. These trials were recorded by video. Behaviors of elephants were then extracted from video into focal observations of thirty second segments before, during and after a sound was played. I analyzed these data using parametric t-tests and …
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Dust bathing behaviours of Elephants, Zebras and Wildebeest and the potential risk of inhalational anthrax in Etosha National Park
… studied through observations at four selected waterholes. Given that mud bathing is also a potential means of soil contact by elephants their mud bathing behaviours were included in the study. Polymysin-lysozyme-EDTA-thallous acetae (PLET) agar was used to grow and quantify B. anthracis spores …
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Assessment of environmental and anthropogenic factors that affect movement of sedentary blue wildebeest (Connochaetes taurinus) in the Kalahari region of Botswana
Numerous species of ungulates are forced to face the effects of rising temperatures and anthropogenic influences. The most dramatic effects of these concerns have been documented in Southern Africa, where wildlife and livestock are often the main source of income. This research uses the Kalahari …