Download Conservation in the 21st Century: Gorillas as a Case Study by T.S. Stoinski, H. D. Steklis, P.T. Mehlman PDF

By T.S. Stoinski, H. D. Steklis, P.T. Mehlman

This quantity identifies the first difficulties confronted in retaining wild populations of gorillas all through Africa, pinpointing new ways to fixing those difficulties and outlining the elevated position that zoos can play in gorilla conservation. It contains the in-depth services of box scientists in a number of disciplines to debate present conservation threats, novel techniques to conservation, and strength ideas.

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Additional info for Conservation in the 21st Century: Gorillas as a Case Study (Developments in Primatology: Progress and Prospects)

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1998b; personal observations from aerial flyovers. Omari et al. 1999; UGADEC staff 1. Current Status of Wild Gorilla Populations IJ connected to Kasese-Kahuzi populations, since individuals would have to cross the Lowa River barrier. Kasese Kahuzi~3100 km2 of occupancy range has been lost between Biega (lowland Schaller’s surveys in 1959 and those of Hall and sector) colleagues – in the southern part of the range north of the Lugala River. Not clear whether portions of the main occupancy range have become fragmented (see text).

4). , 1998a). 92 individuals/km2. 4, area 9), producing an estimate of 624 weaned gorillas for the entire contiguous sector in this area encompassing the Tayna Reserve. 6. Challenges with Determining Abundance The estimate for Tayna and nearby areas, like all estimates from transect methods, has a wide range of error. First, the estimation of abundance is an exercise in only two dimensions, when in fact these gorillas are distributed over a mountainous area with slopes that often approach 45°, distorting calculations of true surface area.

2003). Because this trade is so surreptitious, quantifying rates of extraction for gorillas is quite difficult. In northeastern Republic of Congo, Kan and Asato (1994) estimated that 5% of gorillas were being killed for bushmeat each year. In the mid-1990s, Rose (1997) made qualitative estimates that 3,000–6,000 apes were being killed for the bushmeat trade each year (off-take estimates are also reviewed in Butynski, 2001). Habitat loss, due both to human population expansion and agricultural clearing, as well as the commercial logging industry, is also a significant threat to western lowland gorillas.

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