Abstract # 13329 Poster # 105:

Scheduled for Thursday, August 22, 2019 06:00 PM-08:00 PM: (Alumni Lounge) Poster Presentation


M. Lima1, S. L. Mendes1,2 and K. B. Strier3
1Universidade Federal do Espirito Santo - UFES, Laboratório de Biologia da Conservação de Vertebrados , Departamento de Ciências Biológicas , Vitoria, Espirito Santo 29075910, Brazil, 2Instituto Nacional da Mata Atlântica - INMA, 3Department of Anthropology, University of Wisconsin-Madison 1180 Observatory Drive, Madison, WI 53706

Quantitative assessments of temporal patterns of habitat use can provide insights into access to resources and intergroup dynamics in small populations confined to forest fragments. We evaluated these patterns in one population of northern muriquis (Brachyteles hypoxanthus) at the Reserva Particular do Patrimônio Natural - Feliciano Miguel Abdala, Caratinga, Minas Gerais, Brazil, which grew in size from 301-355 individuals distributed among four groups during our study from August 2010 - July 2013. We used 22,643 GPS sightings obtained at 30-min intervals to calculate the Minta Index (MI) of the home ranges (HRs) and core areas (CAs) used by each group in successive years. There was high interannual fidelity in the location of the HRs of all groups (MI mean±SD=84+6; range = 76-95) across years (MI values: low <33, moderate 34-66, and high overlap >66), but only low to moderate interannual fidelity in the location of all but one of the CAs (MI mean±SD=55+16; range = 28-78). The high HR fidelity reflects stability in the groups’ allocation of space over the 3-year study. Conversely, the lower and more variable interannual fidelity in group CAs may reflect shifts in resource availability that affect the intensity with which groups use different parts of the HRs. Supported by NSF (BCS-0921013), CI-MMBF and CNPq (Proc. 479054/2008-8).