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  Nutritional ecology of wild Bornean orangutans (Pongo pygmaeus wurmbii) in a peat swamp habitat: Effects of age, sex, and season

Vogel, E. R., Alavi, S. E., Utami-Atmoko, S. S., van Noordwijk, M. A., Bransford, T. D., Erb, W. M., et al. (2017). Nutritional ecology of wild Bornean orangutans (Pongo pygmaeus wurmbii) in a peat swamp habitat: Effects of age, sex, and season. American Journal of Primatology, 79(4), 1-20. doi:10.1002/ajp.22618.

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Genre: Journal Article

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 Creators:
Vogel, Erin R, Author
Alavi, Shauhin E.1, Author              
Utami-Atmoko, Sri Suci, Author
van Noordwijk, Maria A, Author
Bransford, Timothy D, Author
Erb, Wendy M, Author
Zulfa, Astri, Author
Sulistyo, Fransiska, Author
Farida, Wartika Rosa, Author
Rothman, Jessica M, Author
Affiliations:
1Rutgers University, ou_persistent22              

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 Dates: 2017-04
 Publication Status: Published in print
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 Table of Contents: The spatial and temporal variation in food abundance has strong effects on wildlife feeding and nutrition. This variation is exemplified by the peatland forests of Central Kalimantan, which are characterized by unpredictable fruiting fluctuations, relatively low levels of fruit availability, and low fruit periods (<3% of trees fruiting) that can last nearly a year. Challenged by these environments, large, arboreal frugivores like orangutans must periodically rely on non‐preferred, lower‐quality foods to meet their nutritional needs. We examined variation in nutrient intake among age‐sex classes and seasons over a 7‐year period at the Tuanan Orangutan Research Station in Central Kalimantan. We conducted 2,316 full‐day focal follows on 62 habituated orangutans (Pongo pygmaeus wurmbii). We found differences in total energy and macronutrient intake across age‐sex classes, controlling for metabolic body mass. Intake of both total energy and macronutrients varied with fruit availability, and preference of dietary items increased with their nutritional quality. Foraging‐related variables, such as day journey length, travel time, and feeding time, also varied among age‐sex classes and with fruit availability. Our results add to the growing body of literature suggesting that great variation in foraging strategies exists among species, populations, and age‐sex classes and in response to periods of resource scarcity.
 Rev. Type: -
 Identifiers: DOI: 10.1002/ajp.22618
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Title: American Journal of Primatology
  Other : Am. J. Primatol.
Source Genre: Journal
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Publ. Info: New York, NY : A.R. Liss
Pages: - Volume / Issue: 79 (4) Sequence Number: - Start / End Page: 1 - 20 Identifier: ISSN: 0275-2565
CoNE: https://pure.mpg.de/cone/journals/resource/110985822457224