Abstract # 30:

Scheduled for Saturday, August 26, 2017 06:00 PM-08:00 PM: (National Ballroom AB) Poster Presentation


POPULATION ASSESSMENT OF PRIMATES IN RELATION TO HUNTING PRESSURE IN THE GRAN CALDERA SOUTHERN HIGHLANDS SCIENTIFIC RESERVE, BIOKO ISLAND

E. M. Sinclair1, J. R. Owen2, F. V. Paladino1 and S. Honarvar1
1Indiana University-Purdue University Fort Wayne, Department of Biology, 2101 E. Coliseum Blvd., Fort Wayne, IN 46805-1499, USA, 2Chengdu Research Base for Giant Panda Breeding
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     We surveyed the southern portion of the Gran Caldera Southern Highlands Scientific Reserve in order to estimate the density of 4 primates, the Bioko drill, (Mandillus leucophaeus poensis), Bioko crowned guenon (Cercopithecus pogonias pogonias), Bioko putty-nose monkey (Cercopithecus nictitans martini) and Bioko red-eared guenon (Cercopithecus erythrotis camerunensis), and assess habitat use in relation to hunting activity near the only existing road in the reserve. After its construction in 2014, this paved road bisects the scientific reserve and connects the second largest town on the island with the southern beaches, providing access from both the road and the beach. We set up 9 line transects at 2 survey sites, one site progressing from the road into the forest and the second from the beach into the forest, representing areas with different levels of hunting pressure. We estimated primate density by using distance sampling method as described in Buckland et al. 2010. Each transect was 2 km long and was walked > 8 times (transects walked= 120; transect effort= 236 km) from November 2016 to February 2017. We used general quadrat habitat assessment concurrently along each transect to assess primate density in relation to habitat use. Our data indicates that primate density is negatively correlated with hunting pressure. This is one of the first studies to investigate the impact of this road on primate populations on Bioko.