caa a22 4500 475769104 CHVBK 20180406123614.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1023/A:1005477504728 doi (NATIONALLICENCE)springer-10.1023/A:1005477504728 Primate Community Dynamics in Old Growth Forest over 23.5 Years at Ngogo, Kibale National Park, Uganda: Implications for Conservation and Census Methods [Elektronische Daten] [John Mitani, Thomas Struhsaker, Jeremiah Lwanga] Few data exist regarding long-term changes in primate populations in old-growth, tropical forests. In the absence of this information, it is unclear how to assess population trends efficiently and economically. We addressed these problems by conducting line-transect censuses 23.5 years apart at the Ngogo study area in Kibale National Park, Uganda. We conducted additional censuses over short time intervals to determine the degree to which the temporal distribution of censuses affected estimates of primate numbers. Results indicate that two species, blue monkeys and red colobus, may have experienced significant reductions over the past 23.5 years at Ngogo. In contrast, five other species, baboons, black-and-white colobus, chimpanzees, mangabeys, and red-tailed guenons, have not changed in relative abundance. Additional findings indicate that different observers may vary significantly in their estimates of sighting distances of animals during censuses, thus rendering the use of measures of absolute densities problematic. Moreover, censuses conducted over short periods produce biased estimates of primate numbers. These results provide guidelines for the use of line-transect censuses and underscore the importance of protecting large blocks of forests for primate conservation. Plenum Publishing Corporation, 2000 conservation nationallicence censuses nationallicence population dynamics nationallicence primates nationallicence Mitani John E-mail: mitani@umich.edu aut Struhsaker Thomas aut Lwanga Jeremiah aut International Journal of Primatology Kluwer Academic Publishers-Plenum Publishers 21/2(2000-04-01), 269-286 0164-0291 21:2<269 2000 21 10764 https://doi.org/10.1023/A:1005477504728 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1005477504728 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mitani John E-mail: mitani@umich.edu aut NATIONALLICENCE 700 1- Struhsaker Thomas aut NATIONALLICENCE 700 1- Lwanga Jeremiah aut NATIONALLICENCE 773 0- International Journal of Primatology Kluwer Academic Publishers-Plenum Publishers 21/2(2000-04-01), 269-286 0164-0291 21:2<269 2000 21 10764 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer