The New York Consortium in Evolutionary Primatology
Associate Professor Department of Anthropology California State University, Fullerton
B.A., College of William and Mary Ph.D. 1999, Columbia University
My research focuses on the behavioral ecology and conservation biology of the living primates. Nonhuman primates are excellent models of human behavior and evolution because of their social, ecological, and behavioral similarity to humans. Much of my research examines two inter-related areas of primate ecology and conservation biology: (1) the costs and benefits of group living for male and female primates, and (2) the influence of resource abundance and distribution on the feeding and ranging ecology of primates. My past and present research focuses on wild populations of monkeys in East Africa, including Kenya, Rwanda and Ethiopia. By studying nonhuman primates in their natural settings, I can monitor the interactions between behavior and ecology within the selective environments in which these interactions evolved. My research aims to shed new light on the biological processes that shape the behavior and ecology of humans and other animals.
Currently, I am investigating the behavioral ecology and conservation biology of the rare and enigmatic gelada monkey (Theropithecus gelada) at a remote field site in northern Ethiopia called Guassa. Guassa is an unusually ecologically pristine alpine grassland that has been conserved by one of the few surviving ancient indigenous conservation initiatives on the African continent. My current research at Guassa focuses on evaluating the use of Geographic Information Systems (GIS) and remote sensing techniques to better understand (a) the patterns of abundance and distribution of geladas over space and time and (b) the ecological factors that influence gelada ranging patterns. I am also investigating the key social and ecological variables that influence the outcome of aggressive encounters between gelada social units and the nature and extent of feeding competition within gelada units and how this competition shapes gelada social structure. I welcome student participation and collaboration on my research in primate behavioral ecology and conservation biology. For more information about my research on geladas at Guassa, please visit the Guassa Gelada Research Project Website.
Peer-Reviewed Journal Articles
Fashing, P.J.,Nguyen, N., Luteshi, P., Opondo, W., Cash, J.F., and Cords, M. (2012). Evaluating the suitability of planted forests for African forest monkeys: A case study from Kakamega Forest, Kenya. American Journal of Primatology 74: 77-90.
Laurance, W.F. et al. (many authors including Fashing, P.J.). (2012). Averting biodiversity collapse in tropical forest protected areas. Nature 489:290-294.
Mekonnen, A., Bekele, A., Fashing, P.J., Lernould, J.M., Atickem, A., and Stenseth, N.C. (2012). Newly discovered Bale monkey populations in forest fragments in southern Ethiopia: Evidence of crop raiding, hybridization with grivets, and other conservation threats. American Journal of Primatology 74: 423-432.
Fashing, P.J. and Nguyen, N. (2011). Behavior towards the dying, diseased, and disabled among animals and its relevance to paleopathology. International Journal of Paleopathology 1: 127-128.
Fashing, P.J., Nguyen, N., Barry, T.S., Goodale, C.B., Burke, R.J., Jones, S.C.Z., Kerby, J.T., Lee, L.M., Nurmi, N.O., Venkataraman, V.V. (2011). Death among geladas (Theropithecus gelada):A broader perspective on mummified infants and primate thanatology. American Journal of Primatology73: 405-409.
Fashing, P.J., Nguyen, N., and Fashing, N.J. (2010). Behavior of geladas and other endemic wildlife during a desert locust outbreak at Guassa, Ethiopia: Ecological and conservation implications. Primates 51: 193-197.
Mekonnen, A., Bekele, A., Fashing, P.J., Hemson, G., and Atickem, A. (2010). Diet, activity patterns, and ranging ecology of the Bale monkey (Chlorocebus djamdjamensis) in Odobullu Forest, Ethiopia. International Journal of Primatology 31: 339-362.
Fashing, P.J. (2007). Behavior, ecology, and conservation of colobine monkeys: An introduction. International Journal of Primatology 28: 507-511.
Fashing, P.J., Dierenfeld, E.S., and Mowry, C.B. (2007). Influence of plant and soil chemistry on food selection, ranging patterns, and biomass of Colobus guereza in Kakamega Forest, Kenya. International Journal of Primatology 28: 673-703.
Fashing, P.J., Mulindahabi, F., Gakima, J.-B., Masozera, M., Mununura, I., Plumptre, A.J., and Nguyen, N. (2007). Activity and ranging patterns of Angolan colobus (Colobus angolensis ruwenzorii) in Nyungwe Forest, Rwanda: Possible costs of large group size. International Journal of Primatology 28: 529-550.
Harris, T.R., Fitch, W.T., Goldstein, L.M., and Fashing, P.J. (2006). Black and white colobus monkey (Colobus guereza) roars as a source of both honest and exaggerated information about body mass. Ethology 112: 911-920.
Fashing, P.J. (2004). Mortality trends in the African cherry (Prunus africana) and the implications for colobus monkeys (Colobus guereza) in Kakamega Forest, Kenya. Biological Conservation 120(4): 449-459.
Fashing, P.J., Forrestel, A., Scully, C., and Cords, M. (2004). Long-term tree population dynamics and their implications for the conservation of the Kakamega Forest, Kenya. Biodiversity and Conservation 13(4): 753-771.
Fashing, P.J. and Gathua, J.M. (2004). Spatial variation in the structure and composition of an East African rain forest. African Journal of Ecology 42(3): 189-197.
Fashing, P.J. (2002). Population status of black and white colobus monkeys (Colobus guereza) in Kakamega Forest, Kenya: Are they really on the decline? African Zoology 37(2): 119-126.
Plumptre, A.J., Masozera, M., Fashing, P.J., McNeilage, A., Ewango, C., Kaplin, B., and Liengola, I. (2002). Biodiversity surveys of the Nyungwe Forest Reserve in S.W. Rwanda. WCS Working Paper No. 19, New York: Wildlife Conservation Society. Pp. 1-96.
Fashing, P.J. (2001a). Activity and ranging patterns of guerezas in the Kakamega Forest: Intergroup variation and implications for intragroup feeding competition. International Journal of Primatology 22(4): 549-577.
Fashing, P.J. (2001b). Feeding ecology of guerezas in the Kakamega Forest: The importance of Moraceae fruit in their diet. International Journal of Primatology 22(4): 579-609.
Fashing, P.J. (2001c). Male and female strategies during intergroup encounters in guerezas (Colobus guereza): Evidence for resource defense mediated through males and a comparison with other primates. Behavioral Ecology and Sociobiology 50(3): 219-230.
Fashing, P.J. and Cords, M. (2000). Diurnal primate densities and biomass in the Kakamega Forest: An evaluation of census methods and a comparison with other forests. American Journal of Primatology 50(2): 139-152.
Sterling, E. J., Nguyen, N., and Fashing, P.J. (2000). Spatial patterning in nocturnal prosimians: A review of methods and relevance to studies of sociality. American Journal of Primatology 51(1): 3-19.
Fashing, P.J. (in press). Colobus angolensis. In: N. Rowe (ed.). All the World's Primates. East Hampton, NY: Pogonias Press.
Fashing, P.J. (in press). Colobus guereza. In: N. Rowe (ed.). All the World's Primates. East Hampton, NY: Pogonias Press.
Fashing, P.J. (in press). Theropithecus gelada. In: N. Rowe (ed.). All the World's Primates. East Hampton, NY: Pogonias Press.
Fashing, P.J. and Oates, J.F. (in press). Colobus guereza. In: J. Kingdon, D. Happold, and T. Butynski (eds.). Mammals of Africa. Berkeley, CA: University of California Press.
Fashing, P.J. (2011). African colobine monkeys: Their behavior, ecology, and conservation. In: C. Campbell, A. Fuentes, K. MacKinnon, S. Bearder, and R. Stumpf (eds.). Primates in Perspective. Oxford: Oxford University Press, 2nd edition, pp. 203-229.
Fashing, P.J. (2007). African colobine monkeys: Patterns of between-group interaction. In: C. Campbell, A. Fuentes, K. MacKinnon, M. Panger, and S. Bearder (eds.). Primates in Perspective. Oxford: Oxford University Press, 1st edition, pp. 201-224.