Skip navigation
Skip navigation

Declining orangutan encounter rates from Wallace to the present suggest the species was once more abundant

Meijaard, Erik; Welsh, Alan; Ancrenaz, Marc; Wich, Serge; Nijman, Vincent; Marshall, Andrew J.


BACKGROUND Bornean orangutans (Pongo pygmaeus) currently occur at low densities and seeing a wild one is a rare event. Compared to present low encounter rates of orangutans, it is striking how many orangutan each day historic collectors like Alfred Russel Wallace were able to shoot continuously over weeks or even months. Does that indicate that some 150 years ago encounter rates with orangutans, or their densities, were higher than now? METHODOLOGY/PRINCIPAL FINDINGS We test this hypothesis by...[Show more]

CollectionsANU Research Publications
Date published: 2010-08-11
Type: Journal article
Source: PLoS ONE
DOI: 10.1371/journal.pone.0012042


File Description SizeFormat Image
01_Meijaard_Declining_orangutan_encounter_2010.pdfPublished Version573.49 kBAdobe PDFThumbnail

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  12 November 2018/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator