A5028720187- Wildlife Ecology and Conservation
- Rangeland Management and Livestock Ecology
- Ecology and Vegetation Dynamics Studies
- Rangeland and Wildlife Management
- Genetic and phenotypic traits in livestock
- Animal Ecology and Behavior Studies
- Biblical Studies and Interpretation
- Animal Behavior and Welfare Studies
- Primate Behavior and Ecology
- Conservation, Biodiversity, and Resource Management
- Species Distribution and Climate Change
- Plant and animal studies
- Legal Issues in South Africa
- Plant and Fungal Interactions Research
- Animal Disease Management and Epidemiology
- Ecology and biodiversity studies
- Wildlife-Road Interactions and Conservation
- Human-Animal Interaction Studies
- Environmental Philosophy and Ethics
- Zoonotic diseases and public health
- Land Use and Ecosystem Services
- Animal Diversity and Health Studies
- Bat Biology and Ecology Studies
- Rabies epidemiology and control
- Evolution and Paleontology Studies
Utah State University
2015-2024
University of Pretoria
2007-2024
Zoological Society of London
2023-2024
Université de Montréal
2023
Université Laval
2023
University of Utah
2021
Bowling Green State University
2013
University of the Western Cape
2011-2012
Berry (United States)
2012
Tshwane University of Technology
2006-2011
Kruger National Park in South Africa has one of the most extensive sets records any protected area world, and throughout its history supported connections between science management. In recognition that long-standing tradition comes The Experience, first book to synthesize/summarize a century ecological research management two million hectares African savanna. Experience places scientific experience within framework modern theory practical applications. uses cross-cutting theme heterogeneity...
Mammals must overcome several challenges to exploit woody plants; these include variation among plant species, individuals, growth stages, and parts in their nutritional value mechanical chemical defenses (91). The latter are especially significant because plants produce a variety of secondary metabolites (56), many which against browsing by mammals some appear be an evolutionary 431 0066-4162/91/1120-043 1$02.00
Summary A long‐term (13‐year) data set, based on > 4000 kills, was used to test whether a sympatric group of large predators adheres the theoretical predictions that (1) mean prey body size and (2) diversity increase as functions predator size. All kills observed by safari guides are documented routinely in Mala Private Game Reserve, South Africa. We analysed these records for lion ( Panthera leo , Linnaeus), leopard pardus cheetah Acinonyx jubatus Schreber) African wild dog Lycaon pictus...
Stands of two species African Acacia were monitored for 1 yr in a natural savanna ecosystem, to compare shoot regrowth and leaf chemistry lightly browsed heavily trees. Where ungulates concentrated at seasonal waterhole, A. nigrescens was more severely than the thornier finer leafed tortilis. Shoot compensated herbivory, as net annual extension not significantly different from that light Foliage higher nutrients lower condensed tannins foliage We propose severe pruning by browsing reduces...
Abstract: The decline in the range and numbers of elephants as a result expanding human activity Africa is recognized one continent’s more serious conservation problems. Understanding relationship between settlement patterns elephant abundance fundamental to predicting viability populations. prevailing model human‐elephant interaction predicts negative linear rising density declining at coarse (national or subcontinental) scale. Using observed densities population data, we tested this...
Garnett, S. T., J. Sayer, and Du Toit. 2007. Improving the effectiveness of interventions to balance conservation development: a conceptual framework. Ecology Society 12(1): 2. https://doi.org/10.5751/ES-01963-120102
We measured browsing-induced responses of Acacia trees to investigate "browsing lawns" as an analogy grazing lawns in a semiarid eutrophic African savanna. During the two-year field study, we plant tolerance, resistance, and phenological traits, while comparing variation leaf nitrogen specific area (SLA) across stands nigrescens, Miller, that had experienced markedly different histories attack from large herbivores. Trees heavily browsed developed (1) tolerance traits such high regrowth...
Abstract Rewilding, here defined as “the reorganisation of biota and ecosystem processes to set an identified social–ecological system on a preferred trajectory, leading the self‐sustaining provision services with minimal ongoing management,” is increasingly considered environmental management option, potential for enhancing both biodiversity services. Despite burgeoning interest in concept, there are uncertainties difficulties associated practical implementation rewilding projects, while...
Abstract Understanding the distribution of biodiversity across Earth is one most challenging questions in biology. Much research has been directed at explaining species latitudinal pattern showing that communities are richer tropical areas; however, despite decades research, a general consensus not yet emerged. In addition, global patterns being rapidly altered by human activities. Here, we aim to describe large‐scale richness and diversity terrestrial vertebrate scavenger...
1. Group hunting in social carnivores is generally thought to have evolved through natural selection for improved efficiency of prey capture, increased size apprehended or defence the kill against intra- and interspecific kleptoparasitism. 2. We used a simple model explore how variation group wild dogs Serengeti influences kills kleptoparasitism from spotted hyenas trade-off effects this has on intake rate per dog given selected. 3. The analysis presented suggests that while...
Numbers of free-ranging dogs (Canis familiaris) have reached unprecedented levels in Zimbabwean communal lands (agropastoralist rural areas). This study examined the potential competitive interactions between and wild scavengers on boundary Gokwe Communal Land (GCL) Sengwa Wildlife Research Area (SWRA) 1995–96. Dietary studies showed that were primarily human waste animal carcasses. Twelve experimental carcasses indicated most successful species vertebrate scavenger guild, consuming 60%...
Abstract We report on a study conducted free‐ranging African elephants in the woodlands of northern Botswana. compared bull groups and family units with regard to (1) their patterns habitat use (2) ranging distances from perennial water sources. During dry season, adult males frequented more types than units, whereas used wider diversity habitats bulls during wet season. Bulls roamed widely (>10 km) drinking when congregated within 3.5 km rivers. ephemeral pans were abundant, all elephant...
Summary This study investigated the hypothesis that use of different feeding levels in vegetation promotes resource partitioning among browsing ungulate species African savannas. Focal animal observations, recorded on a real‐time basis using computerized data‐capture system, were conducted giraffe ( Giraffa camelopardalis Linnaeus), kudu Trageluphus strepsiceros Pallas), impala Aepyceros melampus Lichtenstein) and steenbok Raphicerus campestris Thunberg) central region Kruger National Park,...
Following the recent invasion of bovine tuberculosis (BTB) into Kruger National Park, South Africa, we conducted a study on maintenance host, African buffalo, to investigate associations between BTB prevalence and calf:cow ratio, age structure, body condition, endoparasite load. Statistical analyses compared herds zero, medium (1–40%), high (>40%) prevalence. To control for ecological variation across park collected data in northern, central, southern regions restricted some particular...