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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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Orangutan population biology, life history, and conservation

Orangutan population biology, life history, and conservation

Perspectives from population viability analysis models

Chapter:
(p.311) CHAPTER 22 Orangutan population biology, life history, and conservation
Source:
Orangutans
Author(s):

Andrew J. Marshall

Robert Lacy

Marc Ancrenaz

Onnie Byers

Simon J. Husson

Mark Leighton

Erik Meijaard

Norm Rosen

Ian Singleton

Suzette Stephens

Kathy Traylor-Holzer

S. Suci Utami Atmoko

Carel P. van Schaik

Serge A. Wich

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199213276.003.0022

Orangutan populations are particularly susceptible to local extinction due to hunting, habitat loss, and fragmentation because they live at low population densities, grow slowly, and reproduce rarely. This chapter uses Population Viability Analysis (PVA) to consider the conservation implications of orangutan life history and population biology. First, a baseline model that incorporates the best available orangutan life-history data is presented. This model is then used to examine how plausible variation in model parameters, changes in the intensity of human-induced threats, and different conservation and management interventions would affect the probability of orangutan population persistence. The effects of existing threats on the extinction risk of specific orangutan populations on Borneo and Sumatra are also modelled. Finally, the conservation and management implications of this modeling exercise are considered.

Keywords:   population viability analysis, life history, conservation biology, orangutans

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