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Protective Status, Ecology and Strategies for Improving Conservation of Cercocebus sanjei in the Udzungwa Mountains, Tanzania

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Abstract

Sanje mangabeys (Cercocebus sanjei), first described in 1981, are among the most endangered primates in the world. They are endemic to the Udzungwa Mountains of Tanzania, in a biogeographic region designated one of the world’s biodiversity hotspots. Conservation research since 1997 has documented the presence of the mangabey in only 3 of the relict montane forest blocks of the Udzungwas. The total population, possibly < 1,500 animals, is fragmented and not adequately protected. A substantial proportion (perhaps 40%) live in forest reserves outside the protective confines of the Udzungwa Mountains National Park, and they are affected by habitat loss and hunting. Efforts to improve their conservation status include assessment of distribution, relative abundance, and habitat quality, and initiation of observational research with habituated individuals to acquire critically important data on their habitat requirements, diet, movement patterns, socioecology, and community ecology. These interrelated research activities should contribute to effective management for conservation, provide baseline information to support current efforts to expand the boundaries of the national park, and guide potential future establishment of corridors between the major forests known to support mangabey groups.

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References

  • Abernethy, K. A., White, L. J. T., and Wickings, E. J. (2002). Hordes of mandrills (Mandrillus sphinx): Extreme group size and seasonal male presence. J. Zool. Lond. 258: 131–137.

    Google Scholar 

  • Axelrod, D. I., and Raven, P. H. (1978). Late Cretaceous and Tertiary vegetation history of Africa. In Werger, M. J. A. (ed.), Biogeography and Ecology of Southern Africa, Dr. W. Junk Publications, The Hague, pp. 77–130.

    Google Scholar 

  • Baillie, J., and Groombridge, B. (1996). IUCN Red List of Threatened Animals, IUCN, Gland, Switzerland.

    Google Scholar 

  • Brooks, T. M., Mittermeier, R. A., Mittermeier, C. G., da Fonseca, G. A. B., Rylands, A. B., Konstant, W. R., Flick, P., Pilgrim, J., Oldfield, S., Magin, G., and Hilton-Taylor, C. (2002). Habitat loss and extinction in the hotspots of biodiversity. Conser. Biol. 16: 909– 923.

    Google Scholar 

  • Burgess, N. D., Fjeldså, J., and Botterweg, R. (1998a). The faunal importance of the Eastern Arc Mountains. J. East Afr. Nat. Hist. 87: 37–58.

    Google Scholar 

  • Burgess, N. D., Nummelin, M., Fjeldså, J., Howell, K. M., Lukumbyzya, K., Mhando, L., Phillipson, P., and Vanden Berghe, E. (eds.) (1998b). Biodiversity and Conservation of the Eastern Arc Mountains of Tanzania and Kenya. Special Issue, J. East Afr. Nat. Hist. 87.

  • Butynski, T. M., and Ehardt, C. L. (2003). Notes on ten restricted-range birds in the Udzungwa Mountains, Tanzania. Scopus 23: 12–27.

    Google Scholar 

  • Butynski, T. M., and Mwangi, G. (1994). Conservation Status and Distribution of the Tana River Red Colobus and Crested Mangabey. Unpublished Report for Zoo Atlanta, National Museums of Kenya, Institute of Primate Research, and East African Wildlife Society.

  • Butynski, T. M., Ehardt, C. L., and Struhsaker, T. T. (1998). Notes on two dwarf galagos (Galagoides udzungwensis and Galagoides orinus) in the Udzungwa Mountains, Tanzania. Primate. Conserv. 18: 69–75.

    Google Scholar 

  • Caughley, G., and Gunn, A. (1996). Conservation Biology in Theory and Practice, Blackwell, Oxford.

    Google Scholar 

  • Chalmers, N. R. (1968). Group composition, ecology and daily activities of free living mangabeys in Uganda. Folia Primatol. 8: 247–262.

    CAS  PubMed  Google Scholar 

  • Chapman, C. A., and Chapman, L. J. (1999). Implications of small scale variation in ecological conditions for the diet and density of red colobus monkeys. Primates 40: 215–231.

    Google Scholar 

  • Cowlishaw, G., and Dunbar, R. (2000). Primate Conservation Biology, University of Chicago Press, Chicago.

    Google Scholar 

  • Dinesen, L. (1998). Priorities for biodiversity conservation in the Udzungwa Mountains, Tanzania-based on bird data. J. East Afr. Nat. Hist. 87: 195–204.

    Google Scholar 

  • Dinesen, L., Lehmberg, T., Rahner, M. C., and Fjeldså, J. (2001). Conservation priorities for the forests of the Udzungwa Mountains, Tanzania, based on primates, duikers and birds. Biol. Conserv. 99: 223–236.

    Google Scholar 

  • Dinesen, L., Lehmberg, T., Svendsen, J. O., and Hansen, L. A. (1993). Range extensions and other notes on some restricted range forest birds from West Kilombero in the Udzungwa Mountains. Scopus 17: 48–58.

    Google Scholar 

  • Ehardt, C. L. (2001). The endemic primates of the Udzungwa Mountains, Tanzania. Afr. Primates 4: 15–26.

    Google Scholar 

  • Ehardt, C. L., Struhsaker, T. T., and Butynski, T. M. (1999). Conservation of the Endangered Primates of the Udzungwa Mountains, Tanzania: Surveys, Habitat Assessment, and Long-Term Monitoring. Unpublished Final Report, Margot Marsh Biodiversity Foundation, Conservation International.

  • Estrada, A., and Coates-Estrada, R. (1996). Tropical rain forest fragmentation and wild populations of primates at Los Tuxtlas, Mexico. Int. J. Primatol. 17: 759–783.

    Google Scholar 

  • Fimbel, C. (1994). Ecological correlates of species success in modified habitats may be disturbance- and site-specific: The primates of Tiwai Island. Conserv. Biol. 8: 106– 113.

    Google Scholar 

  • Fjeldså, J. (1999). The impact of human forest disturbance on the endemic avifauna of the Udzungwa Mountains, Tanzania. Bird Conserv. Int. 9: 47–62.

    Google Scholar 

  • Fleagle, J. G., and McGraw, W. S. (1999). Skeletal and dental morphology supports diphyletic origin of baboons and mangabeys. Proc. Natl. Acad. Sci. 96: 1157–1161.

    CAS  PubMed  Google Scholar 

  • Freeland, W. J. (1979). Mangabey (Cercocebus albigena) social organization and population density in relation to food use and availability. Folia Primatol. 32: 108–124.

    CAS  PubMed  Google Scholar 

  • Gautier-Hion, A. (1978). Food niches and coexistence in sympatric primates in Gabon. In Chivers, D., and Herbert, J. (eds.), Recent Advances in Primatology, Volume I: Behaviour, Academic Press, London, pp. 269–286.

    Google Scholar 

  • Greiser Johns, A. C., and Greiser Johns, B. G. (1995). Tropical forest primates and logging: Long-term coexistence? Oryx 29: 205–211.

    Google Scholar 

  • Griffiths, C. J. (1993). The geological evolution of East Africa. In Lovett, J. C., and Wasser, S. K. (eds.), Biogeography and Ecology of the Rainforests of East Africa, Cambridge University Press, Cambridge, pp. 9–21.

    Google Scholar 

  • Groves, C. P. (2001). Primate Taxonomy, Smithsonian Institution Press, Washington, DC.

    Google Scholar 

  • Hamilton, A. C. (1989). African forests. In Lieth, H., and Werger, M. J. A. (eds.), Tropical Rain Forest Ecosystems. Ecosystems of the World, Vol. 14B., Elsevier, New York, pp. 155–182.

    Google Scholar 

  • Harcourt, A. H. (1998). Ecological indicators of risk for primates, as judged by species’ susceptibility to logging. In Caro, T. M. (ed.), Behavioural Ecology and Conservation Biology, Oxford University Press, Oxford, pp. 56–79.

    Google Scholar 

  • Harris, E. E., and Disotell, T. R. (1998). Nuclear gene trees and the phylogenetic relationships of the mangabeys (Primates: Papionini). Mol. Biol. Evol. 15: 892–900.

    CAS  PubMed  Google Scholar 

  • Homewood, K. M. (1976). Ecology and Behaviour of the Tana Mangabey (Cercocebus galeritus galeritus). Ph.D. Dissertation, University College, London.

  • Homewood, K. M. (1978). Feeding strategy of the Tana mangabey (Cercocebus galeritus galeritus) (Mammalia: Primates). J. Zool. Lond. 186: 375–391.

    Google Scholar 

  • Homewood, K. M., and Rodgers, W. A. (1981). A previously undescribed mangabey from southern Tanzania. Int. J. Primatol. 2: 47–55.

    Google Scholar 

  • Hoshino, J. (1985). Feeding ecology of mandrills (Mandrillus sphinx) in Campo Animal Reserve, Cameroon. Primates 26: 248–273.

    Google Scholar 

  • Institute of Resource Assessment. (2000). Socio-economic study of the Udzungwa Mountains National Park. Assessment of potential impacts of the UMNP on major agro-industrial developments in the Kilombero Valley and villages in the western side of the Udzungwa Mountains. Draft report prepared for WWF-TPO and TANAPA by the Institute of Resource Assessment (IRA), University of Dar es Salaam.

  • IUCN (2003). 2003 IUCN Red List of Threatened Species. http://www.redlist.org. Downloaded March 2004.

  • Jensen, F. P., and Brogger-Jensen, S. (1992). The forest avifauna of the Udzungwa Mountains, Tanzania. Scopus 15: 65–83.

    Google Scholar 

  • Johns, A. D. (1985). Selective logging and wildlife conservation in tropical rain-forest: Problems and recommendations. Biol. Conserv. 31: 355–375.

    Google Scholar 

  • Johns, A. D. (1986). Effects of selective logging on the behavioural ecology of west Malaysian primates. Ecology 67: 684–694.

    Google Scholar 

  • Johns, A. D. (1991). Forest disturbance and Amazonian primates. In Box, H. O. (ed.), Primate Responses to Environmental Change, Chapman and Hall, London, pp. 115–135.

    Google Scholar 

  • Johns, A. D., and Skorupa, J. P. (1987). Responses of rainforest primates to habitat disturbance: A review. Int. J. Primatol. 8: 157–191.

    Google Scholar 

  • Kingdon, J. (1997). The Kingdon Field Guide to African Mammals, Academic Press, London.

    Google Scholar 

  • Kinnaird, M. F. (1990). Behavioral and Demographic Responses to Habitat Change by the Tana River Crested Mangabey (Cercocebus galeritus galeritus). Ph.D. Dissertation, University of Florida, Gainesville, FL.

  • Kinnaird, M. F. (1992). Competition for a forest palm: Use of Phoenix reclinata by human and nonhuman primates. Conserv. Biol. 6: 101–107.

    Google Scholar 

  • Konstant, W. R., Mittermeier, R. A., Rylands, A. B., Butynski, T. M., Eudey, A. A., Ganzhorn, J., and Kormos, R. (2002). The world’s 25 most endangered primates—2002. Neotrop. Primates 10: 128–131.

    Google Scholar 

  • Körn, H. (1994). Genetic, demographic, spatial, environmental and catastrophic effects on the survival probability of small populations of mammals. In Remmert, H. (ed.), Minimum Animal Populations, Springer, Berlin, pp. 33–49.

    Google Scholar 

  • Lahm, S. A. (1986). Diet and habitat preferences of Mandrillus sphinx in Gabon: Implications of foraging strategy. Am. J. Primatol. 11: 9–26.

    Google Scholar 

  • Laurance, W. F., and Bierregaard, J. R. O. (1997). Tropical Forest Remnants: Ecology, Management, and Conservation of Fragmented Communities, The University of Chicago Press, Chicago.

    Google Scholar 

  • Laurent, S., Mselewa, F., Jones, T., and Mtui, A. (in preparation). African crowned eagle Stephanoaetus coronatus killed by Sanje mangabey Cercocebus sanjei.

  • Lawes, M. J. (1992). Estimates of population density and correlates of the status of the samango monkey Cercopithecus mitis in Natal, South Africa. Biol. Conserv. 60: 197–210.

    Google Scholar 

  • Lovett, J. C. (1988). Endemism and affinities of the Tanzanian montane forest flora. Monogs. Syst. Bot. Missouri Botanical Gardens 25: 491–496.

    Google Scholar 

  • Lovett, J. C. (1990). Classification and status of the Tanzanian forests. Mitteilungen aus dem Institut fur Allgemeine Botanik in Hamburg 23A: 287–300.

    Google Scholar 

  • Lovett, J. C. (1993). Eastern Arc moist forest flora. In Lovett, J. C., and Wasser, S. K. (eds.), Biogeography and Ecology of the Rain Forests of Eastern Africa, Cambridge University Press, Cambridge, pp. 33–55.

    Google Scholar 

  • Lovett, J. C. (1998a). Importance of the Eastern Arc mountains for vascular plants. J. East Afr. Nat. Hist. 87: 59–74.

    Google Scholar 

  • Lovett, J. C. (1998b). Eastern tropical African centre of endemism: A candidate for World Heritage Status? J. East Afr. Nat. Hist. 87: 359–366.

    Google Scholar 

  • Lovett, J. C., and Friis, I. (1996). Some patterns of endemism in the tropical north east and eastern African woody flora. In van der Maesen, L. J. G., van Der Burgt, X. M., and van Medenbach de Rooy, J. M. (eds.), The Biodiversity of African Plants, Kluwer Academic Publishers, Dordrecht, The Netherlands, pp. 582–601.

    Google Scholar 

  • Mariki, S. W., Shechambo, F., and Salehe, J. (2003). The contribution of environmental goods and services to Tanzania’s economy: With reference to poverty reduction. IUCN-EARO, Nairobi.

  • Marshall, A. R., Topp-Jørgensen, J. E., Brink, H., and Fanning, E. (in press.) Monkey abundance and social structure in two high elevation forest reserves in the Udzungwa Mountains of Tanzania. Int. J. Primatol. 26: 127–145.

  • Mbora, D. N. M. (2003). Effects of Forest Quality and Fragmentation on the Distribution and Abundance of the Tana River Red Colobus (Procolobus rufomitratus) in Tana River, Kenya. Ph.D. Dissertation, Miami University, Oxford, OH.

  • Medley, K. E. (1993). Primate conservation along the Tana River, Kenya: An examination of the forest habitat. Conserv. Biol. 7: 109–121.

    Google Scholar 

  • Ministry of Natural Resources and Tourism. (2001). National Forest Programme. Forestry and Beekeeping Division, Dar es Salaam, Tanzania.

    Google Scholar 

  • Mitani, J. C., Struhsaker, T. T., and Lwanga, J. S. (2000). Primate community dynamics in old growth forest over 23.5 years at Ngogo, Kibale National Park, Uganda: Implications for conservation and census methods. Int. J. Primatol. 21: 269–286.

    Google Scholar 

  • Mitani, M. (1989). Cercocebus torquatus: Adaptive feeding and ranging behaviors related to seasonal fluctuations of food resources in the tropical rain forest of south-western Cameroon. Primates 30: 307–323.

    Google Scholar 

  • Mittermeier, R. A., Myers, N., and Mittermeier, C. G. (2000). Hotspots. Earth’s Biologically Richest and Most Endangered Terrestrical Ecosystems, CEMEX, Mexico City.

    Google Scholar 

  • Murcia, C. (1995). Edge effects in fragmented forests: Implications for conservation. Trends Ecol. Evol. 10: 58–62.

    Google Scholar 

  • Myers, N., Mittermeier, R. A., Mittermeier, C. G., da Fonseca, G. A. B., and Kent, J. (2000). Biodiversity hotspots for conservation priorities. Nature 403: 853–858.

    Article  CAS  PubMed  Google Scholar 

  • Newmark, W. (1998). Forest area, fragmentation, and loss in the Eastern Arc Mountains: Implications for the conservation of biological diversity. J. East Afr. Nat. Hist. 87: 29– 36.

    Google Scholar 

  • Oates, J. F. (1986). African primate conservation: General needs and specific priorities. In Benirschke, K. (ed.), Primates: The Road to Self-Sustaining Populations, Springer, New York, pp. 21–29.

    Google Scholar 

  • Oates, J. F., Whitesides, G. H., Davies, A. G., Waterman, P. G., Green, S. M., Dasilva, G. L., and Mole, S. (1990). Determinants of variation in tropical forest primate biomass: New evidence from West Africa. Ecology 71: 328–343.

    Google Scholar 

  • Olupot, W. (1998). Long-term variation in mangabey (Cercocebus albigena johnstoni Lydekker) feeding in Kibale National Park, Uganda. Afr. J. Ecol. 36: 96–101.

    Google Scholar 

  • Olupot, W., Chapman, C. A., Brown, C. H., and Waser, P. M. (1994). Mangabey (Cercocebus albigena) population density, group size, and ranging: A twenty-year comparison. Amer. J. Primatol. 32: 197–205.

    Google Scholar 

  • Onderdonk, D. A., and Chapman, C. A. (2000). Coping with forest fragmentation: The primates of Kibale National Park, Uganda. Int. J. Primatol. 21: 587–611.

    Google Scholar 

  • Peres, C. A. (1991). Humboldt’s woolly monkeys decimated by hunting in Amazonia. Oryx 25: 89–95.

    Google Scholar 

  • Poulsen, J. R., Clark, C. J., and Smith, T. B. (2001). Seasonal variation in the feeding ecology of the grey-cheeked mangabey (Lophocebus albigena) in Cameroon. Am. J. Primatol. 54: 91–105.

    CAS  PubMed  Google Scholar 

  • Quris, R. (1975). Ecologie et organization sociale de Cercocebus galeritus agilis dans le nord-est du Gabon. La Terre et la Vie 29: 337–398.

    Google Scholar 

  • Range, F., and Noë, R. (2002). Familiarity and dominance relations among female sooty mangabeys in the Tai National Park. Am. J. Primatol. 56: 137–153.

    PubMed  Google Scholar 

  • Rodgers, W. A., and Homewood, K. M. (1982). Biological values and conservation prospects for the forests and primate populations of the Udzungwa Mountains, Tanzania. Biol. Conserv. 24: 285–304.

    Google Scholar 

  • Rogers, M. E., Abernethy, K. A., Fontaine, B., Wickings, E. J., White, L. J. T., and Tutin, C. E. G. (1996). Ten days in the life of a mandrill horde in the Lope Reserve, Gabon. Am. J. Primatol. 40: 297–313.

    Google Scholar 

  • Rylands, A. B., and Keuroghlian, A. (1988). Primate populations in continuous forest and forest fragments in central Amazonia. Acta Amazonica 18: 291–307.

    Google Scholar 

  • Schwartzkopf, L., and Rylands, A. B. (1989). Primate species richness in relation to habitat structure in Amazonian rainforest fragments. Biol. Conserv. 48: 1–12.

    Google Scholar 

  • Shaw, N. F. (2003). Foraging Strategies in Two Sympatric Mangabey Species (Cercocebus agilis and Lophocebus albigena). Ph.D. Dissertation, Stony Brook University, Stony Brook, NY.

  • Skorupa, J. P. (1986). Responses of rainforest primates to selective logging in Kibale Forest Uganda: A summary report. In Benirschcke, K. (ed.), Primates: The Road to Self-Sustaining Populations, Springer, Berlin, pp. 57–70.

    Google Scholar 

  • Stevenson, P. R. (2001). The relationship between fruit production and primate abundance in Neotropical communities. Biol. J. Linnean Soc. 72: 161–178.

    Google Scholar 

  • Struhsaker, T. T. (1997). Ecology of an African Rain Forest, University Press of Florida, Gainesville, FL.

    Google Scholar 

  • Struhsaker, T. T. (2002). Guidelines for Biological Monitoring and Research in Africa’s Rain Forest Protected Areas. Unpublished Report, Center for Applied Biodiversity Science, Conservation International.

  • Struhsaker, T. T., and Siex, K. S. (1996). The Zanzibar red colobus monkey Procolobus kirkii: Conservation status of an endangered island endemic. Afr. Primates 2: 54–61.

    Google Scholar 

  • Struhsaker, T. T., Marshall, A. R., Detwiler, K., Siex, K., Ehardt, C. L., Lisbjerg, D. D., and Butynski, T. M. (2004). Demographic variation among Udzungwa red colobus in relation to gross ecological and sociological parameters. Int. J. Primatol. 25: 615– 658.

    Google Scholar 

  • Thomas, S. C. (1991). Population densities and patterns of habitat use among anthropoid primates of the Ituri Forest, Zaire. Biotropica 23: 68–83.

    Google Scholar 

  • Tutin, C. E. G. (1999). Fragmented living: Behavioural ecology of primates in a forest fragment in the Lopé Reserve, Gabon. Primates 40: 249–265.

    Google Scholar 

  • Tutin, C. E. G., Ham, R. M., White, L. J., and Harrison, M. J. S. (1997a). The primate community of the Lopé Reserve, Gabon: Diets, responses to fruit scarcity and effects on biomass. Am. J. Primatol. 42: 1–24.

    CAS  Google Scholar 

  • Tutin, C. E. G., White, L. J. T., Mackanga-Missandzou, A. (1997b). The use by rain forest mammals of natural forest fragments in an equatorial African savanna. Conserv. Biol. 11: 1190–1203.

    Google Scholar 

  • Wallis, S. J. (1978). The Sociology of Cercocebus albigena johnstoni (Lyddeker): An Arboreal, Rain Forest Monkey. Ph.D. Dissertation, University of London, London.

  • Waser, P. M. (1974). Intergroup Interaction in a Forest Monkey: The Mangabey Cercocebus albigena. Ph.D. Dissertation, Rockefeller University, New York, NY.

  • Waser, P. M. (1975). Monthly variation in feeding and activity patterns of the mangabey, Cercocebus albigena (Lyddeker). East. Afr. Wildlife J. 13: 249–263.

    Google Scholar 

  • Waser, P. M. (1977). Feeding, ranging and group size in the mangabey Cercocebus albigena. In Clutton-Brock, T. H. (ed.), Primate Ecology: Studies of Feeding and Ranging Behavior in Lemurs, Monkeys and Apes, Academic Press, New York, NY, pp. 183–221.

    Google Scholar 

  • Wasser, S. K. (1993). The socioecology of interspecific associations among the monkeys of the Mwanihana rain forest, Tanzania: A biogeographic perspective. In Lovett, J. C., and Wasser, S. K. (eds.), Biogeography and Ecology of the Rain Forests of Eastern Africa, Cambridge University Press, Cambridge, pp. 267–279.

    Google Scholar 

  • Weisenseel, K., Chapman, C. A., and Chapman, L. J. (1993). Nocturnal primates of the Kibale Forest: Effects of selective logging on prosimian densities. Primates 34: 445–450.

    Google Scholar 

  • Wieczkowski, J. A. (2003). Aspects of the Ecological Flexibility of the Tana Mangabey (Cercocebus galeritus) in its Fragmented Habitat, Tana River, Kenya. Ph.D. Dissertation, University of Georgia, Athens, GA.

  • Wilkie, D. S., and Flinn, J. T. (1990). Slash-burn cultivation and mammal abundance in the Ituri Forest, Zaire. Biotropica 22: 90–99.

    Google Scholar 

  • Wilson, C. C., and Johns, A. D. (1982). Diversity and abundance of selected animal species in undisturbed forest, selectively logged forest and plantations in East Kalimantan, Indonesia. Biol. Consen. 24: 205–218.

    Google Scholar 

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Ehardt, C.L., Jones, T.P. & Butynski, T.M. Protective Status, Ecology and Strategies for Improving Conservation of Cercocebus sanjei in the Udzungwa Mountains, Tanzania. Int J Primatol 26, 557–583 (2005). https://doi.org/10.1007/s10764-005-4366-y

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