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    This (lowercase (translateProductType product.productType)) has been cited by the following publications. This list is generated based on data provided by CrossRef.
    Abu, Kelil Mekonnen, Addisu Bekele, Afework and Fashing, Peter J. 2018. Diet and activity patterns of Arsi geladas in low-elevation disturbed habitat south of the Rift Valley at Indetu, Ethiopia. Primates, Vol. 59, Issue. 2, p. 153.
    Jarvey, Julie C. Low, Bobbi S. Pappano, David J. Bergman, Thore J. and Beehner, Jacinta C. 2018. Graminivory and Fallback Foods: Annual Diet Profile of Geladas (Theropithecus gelada) Living in the Simien Mountains National Park, Ethiopia. International Journal of Primatology, Vol. 39, Issue. 1, p. 105.
    Souron, Antoine 2018. Morphology, diet, and stable carbon isotopes: On the diet of Theropithecus and some limits of uniformitarianism in paleoecology. American Journal of Physical Anthropology, Vol. 166, Issue. 1, p. 261.
    Ren, Yi Huang, Kang Guo, Songtao Pan, Ruliang Derek, Dunn W Qi, Xiaoguang Wang, Xiaowei Wang, Chengliang Zhao, Haitao Yang, Bin Li, Fangfang and Li, Baoguo 2017. Kinship promotes affiliative behaviors in a monkey. Current Zoology,
    Gommery, Dominique and Bento Da Costa, Laura 2016. Les primates non-humains pliocènes et plio-pléistocènes d’Afrique du Sud. Revue de primatologie,
    Nguyen, Nga Fashing, Peter J. Boyd, Derek A. Barry, Tyler S. Burke, Ryan J. Goodale, C. Barret Jones, Sorrel C.Z. Kerby, Jeffrey T. Kellogg, Bryce S. Lee, Laura M. Miller, Carrie M. Nurmi, Niina O. Ramsay, Malcolm S. Reynolds, Jason D. Stewart, Kathrine M. Turner, Taylor J. Venkataraman, Vivek V. Knauf, Yvonne Roos, Christian and Knauf, Sascha 2015. ­Fitness impacts of tapeworm parasitism on wild gelada monkeys at Guassa, Ethiopia. American Journal of Primatology, Vol. 77, Issue. 5, p. 579.
    Ejigu, Dessalegn and Bekele, Afework 2015. Diurnal activity patterns and feeding ecology of the endemic geladas (Theropithecus gelada)in the Simien Mountains National Park, Ethiopia. African Journal of Ecology, Vol. 53, Issue. 2, p. 231.
    Fashing, Peter J. Nguyen, Nga Venkataraman, Vivek V. and Kerby, Jeffrey T. 2014. Gelada feeding ecology in an intact ecosystem at Guassa, Ethiopia: Variability over time and implications for theropith and hominin dietary evolution. American Journal of Physical Anthropology, Vol. 155, Issue. 1, p. 1.
    Scott, Robert S. Teaford, Mark F. and Ungar, Peter S. 2012. Dental microwear texture and anthropoid diets. American Journal of Physical Anthropology, Vol. 147, Issue. 4, p. 551.
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    le Roux, Aliza Beehner, Jacinta C. and Bergman, Thore J. 2011. Female philopatry and dominance patterns in wild geladas. American Journal of Primatology, Vol. 73, Issue. 5, p. 422.
    Mau, M. Südekum, K.-H. Johann, A. Sliwa, A. and Kaiser, T.M. 2010. Indication of higher salivary α-amylase expression in hamadryas baboons and geladas compared to chimpanzees and humans. Journal of Medical Primatology, Vol. 39, Issue. 3, p. 187.
    Fashing, Peter J. Nguyen, Nga and Fashing, Norman J. 2010. Behavior of geladas and other endemic wildlife during a desert locust outbreak at Guassa, Ethiopia: ecological and conservation implications. Primates, Vol. 51, Issue. 3, p. 193.
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    Nystrom, Pia Phillips-Conroy, Jane E. and Jolly, Clifford J. 2004. Dental microwear in anubis and hybrid baboons (Papio hamadryas, sensu lato) living in Awash National Park, Ethiopia. American Journal of Physical Anthropology, Vol. 125, Issue. 3, p. 279.
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    Macho, G.A. Leakey, M.G. Williamson, D.K. and Jiang, Y. 2003. Palaeoenvironmental reconstruction: evidence for seasonality at Allia Bay, Kenya, at 3.9 million years. Palaeogeography, Palaeoclimatology, Palaeoecology, Vol. 199, Issue. 1-2, p. 17.
    Ungar, P. S. and Teaford, M. F. 1996. Preliminary examination of non-occlusal dental microwear in anthropoids: Implications for the study of fossil primates. American Journal of Physical Anthropology, Vol. 100, Issue. 1, p. 101.
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  • Print publication year: 1993
  • Online publication date: November 2009

16 - The ecology of Theropithecus gelada

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Summary

Summary

Gelada baboons (Theropithecus gelada) are found mainly on the Amhara highlands in Ethiopia at altitudes ranging between 1500–4500 m. Recently, a new population was found in the Arussi region (Mori & Belay, 1990).

The gelada habitat is characterized as wet and cool compared to that of lowland baboons. The higher the altitude, the longer the vegetation is kept green, because of the high rainfall and low temperature.

Gelada baboons can achieve higher population densities and biomass compared to other sympatric primates and ungulates; this is made possible by their efficient food processing techniques and anti-predator strategies, including group living and the use of cliffs as refuges.

They are highly graminivorous, with grasses forming more than 90 per cent of their diet in most habitats and seasons. However, when the availability and the nutritional content of grasses declines, they shift to eating herbs.

At present, we know little about the digestive processes that enable gelada to achieve a high biomass. 6. The time spent feeding is the highest level among herbivorous primates, ranging from 67 per cent in the high Simen to 36 per cent at Bole.

History of field studies on gelada baboons

All of the ecological field data on gelada baboons (Theropithecus gelada Rüppell) were accumulated during a single decade (1964–75). John H. Crook carried out his pioneer study on this species in Ethiopia in 1964–5. He was able to provide a basic description of the species' social system as well as the species' unusual ecology (Crook, 1966; Crook & Aldrich-Blake, 1968).

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Theropithecus
  • Online ISBN: 9780511565540
  • Book DOI: https://doi.org/10.1017/CBO9780511565540
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