Coexistence between people and elephants in African savannas

Article Abstract:

The prediction that human-elephant interaction in the savannas of Zimbabwe will give a negative linear relationship between increasing human density and decreasing elephant density on a scale that is national or subcontinental has been tested through use of observed elephant densities and human population data. Results did not line up with a linear model, but in general the level of human density after which elephant populations disappear seems to be related to a certain stage as agriculturally transformed land becomes spatially dominant over the natural woodland that is elephant habitat. For future research, investigating these relationships should be a priority.

South Africa, Zimbabwe, Research, Agriculture, Human beings, Human-environment interactions, Biological diversity conservation, Biodiversity conservation, Elephants, Savanna ecology

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Noninvasive stress and reproductive measures of social and ecological pressures in free-ranging African elephants

Article Abstract:

The potential for using fecal progesterone and cortisol metabolite measures is described and the first complete profiles of progesterone and cortisol metabolites over the entire gestation period of free-ranging African elephants is provided. The results of the analysis indicate that measures of progesterone and cortisol metabolites in feces provide indices of reproductive function and physiological stress that can quantify both natural and human disturbances in African elephants.

African elephant

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Ecological interactions, social organization, and extinction in African wild dogs

Article Abstract:

Research presented concerns the limiting factors of African wild dog populations and how these factors are interpreted into an extinction risk. Findings reveal extinction risks for wild dogs are linked to competition with lions, infectious diseases, and pack size.

Statistical Data Included, Methods, Natural history, Wildlife conservation, Feral dogs, Wild dogs

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