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Declining Orangutan Encounter Rates from Wallace to the Present Suggest the Species Was Once More Abundant
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 ove...
Autores principales: | , , , , , |
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Formato: | Texto |
Lenguaje: | English |
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Public Library of Science
2010
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2920314/ https://www.ncbi.nlm.nih.gov/pubmed/20711451 http://dx.doi.org/10.1371/journal.pone.0012042 |