Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Population status of chimpanzees in the Masito-Ugalla Ecosystem, Tanzania.

Piel, AK, Cohen, N, Kamenya, S, Ndimuligo, SA, Pintea, L and Stewart, FA (2015) Population status of chimpanzees in the Masito-Ugalla Ecosystem, Tanzania. American Journal of Primatology, 77 (10). pp. 1027-1035. ISSN 1098-2345

Piel et al., 2015, AJP.compressed.pdf - Accepted Version

Download (474kB) | Preview


More than 75 percent of Tanzania's chimpanzees live at low densities on land outside national parks. Chimpanzees are one of the key conservation targets in the region and long-term monitoring of these populations is essential for assessing the overall status of ecosystem health and the success of implemented conservation strategies. We aimed to assess change in chimpanzee density within the Masito-Ugalla Ecosystem (MUE) by comparing results of re-walking the same line transects in 2007 and 2014. We further used published remote sensing data derived from Landsat satellites to assess forest cover change within a 5 km buffer of these transects over that same period. We detected no statistically significant decline in chimpanzee density across the surveyed areas of MUE between 2007 and 2014, although the overall mean density of chimpanzees declined from 0.09 individuals/km(2) in 2007 to 0.05 individuals/km(2) in 2014. Whether this change is biologically meaningful cannot be determined due to small sample sizes and large, entirely overlapping error margins. It is therefore possible that the MUE chimpanzee population has been stable over this period and indeed in some areas (Issa Valley, Mkanga, Kamkulu) even showed an increase in chimpanzee density. Variation in chimpanzee habitat preference for ranging or nesting could explain variation in density at some of the survey sites between 2007 and 2014. We also found a relationship between increasing habitat loss and lower mean chimpanzee density. Future surveys will need to ensure a larger sample size, broader geographic effort, and random survey design, to more precisely determine trends in MUE chimpanzee density and population size over time. Am. J. Primatol. © 2015 Wiley Periodicals, Inc.

Item Type: Article
Additional Information: This is the accepted version of the following article: Piel, A. K., Cohen, N., Kamenya, S., Ndimuligo, S. A., Pintea, L. and Stewart, F. A. (2015), Population status of chimpanzees in the Masito-Ugalla Ecosystem, Tanzania. Am. J. Primatol., 77: 1027–1035, which has been published in final form at http://dx.doi.org/10.1002/ajp.22438
Uncontrolled Keywords: 0608 Zoology
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QL Zoology
Divisions: Natural Sciences & Psychology (closed 31 Aug 19)
Publisher: Wiley
Related URLs:
Date Deposited: 05 Feb 2016 16:26
Last Modified: 03 Aug 2022 09:58
DOI or ID number: 10.1002/ajp.22438
URI: https://researchonline.ljmu.ac.uk/id/eprint/1860
View Item View Item