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OrangutansGeographic Variation in Behavioral Ecology and Conservation$
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Serge A. Wich, S Suci Utami Atmoko, Tatang Mitra Setia, and Carel P. van Schaik

Print publication date: 2008

Print ISBN-13: 9780199213276

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780199213276.001.0001

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PRINTED FROM OXFORD SCHOLARSHIP ONLINE (oxford.universitypressscholarship.com). (c) Copyright Oxford University Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. date: 25 October 2021

Ranging behavior of orangutan females and social organization

Ranging behavior of orangutan females and social organization

(p.205) CHAPTER 13 Ranging behavior of orangutan females and social organization

Ian Singleton

Cheryl D. Knott

Helen C. Morrogh-Bernard

Serge A. Wich

Carel P. van Schaik

Oxford University Press

Adult female orangutans have large but stable home ranges, varying from as little as 150 ha in some forests up to 850 or more in others. Spatial variation in availability of fruit of key tree species or spatial variation in habitat-wide fruiting peaks appears to be the driving force behind major movements within the range. Larger home ranges are found in more frugivorous subspecies, and at the level of study sites, where habitat mosaics are coarse enough for individual orangutans to cover multiple habitats. In larger home ranges, overlap is also larger. The chapter confirms the presence of female clusters of relatives with highly overlapping home ranges who show preferential association.

Keywords:   home range size, frugivory, female clusters, tree species, multiple habitats

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