project banner image
Descriptive Attribute Value(s)
Grouping Ape
Observation Number (Open Context) 80
Subspecies Pongo abelii
Common name Sumatran orangutan
Period of study 1971 - 2004
Country or Region Indonesia
Method Direct observation
Wet season February - May, October - December (van Schaik 1986)
Dry season January, June - September (van Schaik 1986)
Environment Dry lowland, subcolline
Altitude (m) 350 - 1000 (Russon et al 2009)
% Fruit 62.1
% Leaves 16.0
% Flowers 3.8
% Pith & stems 3.0
% Herbs 2.3
% Invertebrates 3.0
% Bark and cambium 9.2
% Other 0.6
Fruit availability peak July - August (van Schaik 1986)
Low fruit availability Unknown
Percentages Based on average diet composition
Notes Data taken from Table 9.4. Herbs are comprised of other vegetation, Invertebrates includes all animal matter, this information was included here because insects are generally consumed in greater quantities than vertebrate animals. Peak leaf emergence comes in December - February, peak flowering occurs in February - April (van Schaik 1986).
Reference Russon et al., 2009
Full Reference
Russon, A. E., Wich, S. A., Ancrenaz, M., Kanamori, T., Knott, C. D., Kuze, N., Morrogh-Bernard, H. C., Pratje, P., Ramlee, H., Rodman, P., Sawang, A., Sidiyasa, K., Singleton, I. and van Schaik, C. P. (2009). Geographic variation in orangutan diets. In: S. A. Wich, S. S. U. Atmoko, T. M. Setia, and C. P. van Schaik (eds) Geographic variation in behavioral ecology and conservation. Oxford, Oxford University Press. Pages: 135-156. [Available at: https://doi.org/10.1093/acprof:oso/9780199213276.001.0001]
Suggested Citation

Rebecca Haywood. (2020) "Ape 80 from Asia/Sumatra/Ketambe Research Station, Gunung Leuser National Park, Leuser Ecosystem, Sumatra". In Database of non-human primate dietary studies. Rebecca Haywood (Ed). Released: 2020-08-21. Open Context. <https://opencontext.org/subjects/3de93271-b2ec-4e0a-97b0-85c6458fc81f> ARK (Archive): https://n2t.net/ark:/28722/k2gb2fn6z

Copyright License

To the extent to which copyright applies, this content carries the above license. Follow the link to understand specific permissions and requirements.

Required Attribution: Citation and reference of URIs (hyperlinks)