Skip to main content Accessibility help
×
Hostname: page-component-cd9895bd7-jkksz Total loading time: 0 Render date: 2024-12-27T20:30:48.443Z Has data issue: false hasContentIssue false

18 - Distribution, taxonomy, genetics, ecology, and causal links of gorilla survival: The need to develop practical knowledge for gorilla conservation

Published online by Cambridge University Press:  11 August 2009

Esteban E. Sarmiento
Affiliation:
Department of Mammology, American Museum of Natural History, Central Park West and 79th Street, New York, NY 10024, U.S.A.
Andrea B. Taylor
Affiliation:
Duke University, North Carolina
Michele L. Goldsmith
Affiliation:
Tufts University, Massachusetts
Get access

Summary

Introduction

While most would agree that gorilla conservation is a worthwhile endeavor, there is less agreement as to what gorilla conservation actually entails. Ultimately, the most successful conservation measures should provide animals with independence from escalating human intervention, enable them to live out their lives by their own means, and promote self-sustaining populations. Raising animals in captive situations, or in exotic habitats in which they do not naturally occur, engenders human dependency and entrusts their survival to the whims of human economic and sociopolitical concerns. Such rearing can not be justified as conservation unless it is a prelude to reintroduction of otherwise extinct animals into their past natural habitats, and leads to a de-escalation on human dependency.

Conservation, therefore, entails more than just the animal's protection, but also protection of future generations and of natural habitats that will support them. Short-term or “band aid” management, which over time escalates human intervention creating captive situations in what were once natural environments, must be avoided. Although veterinary care may seem especially appropriate when infirmities of free-ranging animals result from human causes, a zealousness to tackle results instead of causes can foster an unnatural dependency that may prove fatal unless human support continues. Fences and 24-hour armed security may protect animals from poachers and habitats from human trespass and exploitation; however, they are ineffective at stopping inbreeding depression, plagues, disease, water contamination, animal overuse and a multitude of other causes of habitat deterioration.

Type
Chapter
Information
Gorilla Biology
A Multidisciplinary Perspective
, pp. 432 - 471
Publisher: Cambridge University Press
Print publication year: 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Agnagna, M., Barnes, R., and Ipandza, M. (1991). Inventaire Préliminaire des Éléphants de Forêt au Sud du Congo. Wildlife Conservation International. New York:
Akeley, M. L. J. (1929). Africa's great National Parks. Natural History, 29, 638–650Google Scholar
Akeley, M. L. J. (1931). National Parks in Africa: The extension of wildlife conservation. Science, 74, 584–588CrossRefGoogle Scholar
Alexandre, D. Y. (1978). Le rôle disseminateur des éléphants en forêt de Taï, Côte d'Ivoire. Compte Rendus, La Terre et la Vie, 32, 47–72Google Scholar
Amman, K. (2000). Exploring the bushmeat trade. In Bushmeat: Africa's Conservation Crisis, ed. K. Amman, pp. 16–27. London: World Society for the Protection of Animals
,Anonymous (2000). Situation in the Kahuzi-Biega National Park. Gorilla Journal, 20, 3–4Google Scholar
Ashford, R. W., Lawson, H., and Butynski, T. M. (1996). Patterns of intestinal parasitism in the mountain gorilla Gorilla gorilla beringei in the Bwindi-Impenetrable Forest, Uganda. Journal of Zoology, London, 239, 507–514CrossRefGoogle Scholar
Awadalla, P., Eyre-Walker, A., and Smith, J. M. (1999). Linkage disequilibrium and recombination in hominid mitochondrial DNA. Science, 286, 2524–2525CrossRefGoogle ScholarPubMed
Beier, P. and Noss, R. F. (1998). Do habitat corridors provide connectivity?Conservation Biology, 12, 1241–1252CrossRefGoogle Scholar
Berger, J. (1990). Persistence of different-sized populations: An empirical assessment of rapid extinctions in bighorn sheep. Conservation Biology, 4, 91–98CrossRefGoogle Scholar
Bermejo, M. (1995). Recensement des gorilles et chimpanzés du Parc National d'Ozala, Report to ECOFAC-CONGO, AGRECO/CTFT
Bourlière, F. and Versucheren, J. (1960). L'Ecologie des Ongulés du Parc National Albert, Vol. 1. Brussels: Institut des Parcs Nationaux du Congo Belge
Butynski, T. M. (1984). Ecological Survey of the Impenetrable (Bwindi) Forest, Uganda, and Recommendations for its Conservation. New York: Wildlife Conservation International
Butynski, T. M. (2000). Peer review. The Sciences, 40, 6–46Google Scholar
Butynski, T. M. (2001). Africa's great apes. In Great Apes and Humans: The Ethics of Coexistence, eds. B. Beck, T. Stoinski, M. Hutchins, T. L. Maple, B. G. Norton, A. Rowan, E. F. Stevens, and A. Arluke, pp. 3–56. Washington, D.C.: Smithsonian Institution Press
Butynski, T. M. and Kalina, J. (1998). Gorilla tourism: A critical look. In Conservation of Biological Resources, eds. E. J. Milner-Gulland and R. Mace, pp. 294–313. Oxford: Blackwell Scientific PublicationsCrossRef
Butynski, T. M. and Sarmiento, E. E. (1995). Gorilla census on Mt. Tshiaberimu: Preliminary report. Gorilla Journal, 1, 11Google Scholar
Butynski, T. M. and Sarmiento, E. E. (1996). The gorillas of Mt. Tshiaberimu, Zaïre. Gorilla Conservation News, 10, 14–15Google Scholar
Butynski, T. M., Hart, J. A., and Omari, I. (1996). Preliminary report on a survey of the southern Itombwe Massif. Gorilla Journal, 13, 13–17Google Scholar
Calvert, J. J. (1985). Food selection by western gorillas (G. g. gorilla) in relation to food chemistry. Oecologia, 65, 236–246CrossRefGoogle Scholar
Carroll, R. W. (1988). Relative density, range extension, and conservation potential of the lowland gorilla (Gorilla gorilla gorilla) in the Dzanga-Sangha region of southwestern Central African Republic. Mammalia, 52, 309–323CrossRefGoogle Scholar
Casimir, M. T. (1975). Feeding ecology and nutrition of an eastern gorilla group in the Mt. Kahuzi region (République du Zaïre). Folia Primatologica, 24, 81–136CrossRefGoogle Scholar
Casimir, M. T. (1977). An analysis of gorilla nesting sites of the Mt. Kahuzi region (Zaïre). Folia Primatolica, 32, 290–308CrossRefGoogle Scholar
Chapman, A. P., Brook, B. W., Clutton-Brock, T. H., Grenfell, B. T., and Frankham, R. (2001). Population viability analyses on a cycling population: A cautionary tale. Biological Conservation, 97, 61–69CrossRefGoogle Scholar
Coolidge, H. J. (1929). A revision of the genus Gorilla. Memoirs of the Museum of Comparative, Zoology, Harvard, 50, 291–381Google Scholar
Cracraft, J. (1989). Speciation and its ontology. In Speciation and its Consequences, eds. D. Otte and J. A. Endler, pp. 28–59. Sunderland, MA: Sinauer Associates
Cracraft, J., Feinstein, J., Vaughn, J., and Helm-Bychowski, K. (1998). Sorting out tigers (Panthera tigris): Mitochondrial sequences, nuclear inserts, systematics and conservation genetics. Animal Conservation, 1, 139–150CrossRefGoogle Scholar
Crandall, K. A., Posada, D., and Vasco, D. (1999). Effective population sizes: Missing measures and missing concepts. Animal Conservation, 2, 317–319CrossRefGoogle Scholar
Czekala, N. and Sicotte, P. (2000). Reproductive monitoring of free-ranging female mountain gorillas by urinary hormonal analysis. American Journal of Primatology, 51, 209–2153.0.CO;2-6>CrossRefGoogle Scholar
Dandelot, P. (1965). Distribution de quelques espèces de Cercopithecoidea en relation avec les zones de végétation de l'Afrique. Zoologica Africana, 1(1), 167-176CrossRefGoogle Scholar
de Heinzelin, J., Clark, D., Schick, K. D., and Gilbert, W. H. (2000). The Acheulean and the Plio-Pleistocene Deposits of the Middle Awash Valley, Ethiopia. Tervuren, Belgium: Musée Royal de L'Afrique Central
Dobzhansky, T. (1937). Genetics and the Origin of Species. New York: Columbia University Press
Dowsett, R. J. and Dowsett-Lemaire, F. (1991). Flore et Fauna du Bassin du Kouilou (Congo) et leur Exploitation. Conoco: Tauraco Press
Dushoff, J. (2000). Carrying capacity an demographic stochacity: Scaling behavior of the stochastic logistic model. Theoretical Population Biology, 57, 59–65CrossRefGoogle ScholarPubMed
Elton, C. S. (1958). The Ecology of Invasions by Animals and Plants. London: Methuen
Emlen, J. T. and Schaller, G. (1960). Distribution and status of the mountain gorilla (Gorilla gorilla beringei) – 1959. Zoologica, 45, 41–52Google Scholar
Eyre-Walker, A., Smith, N. H., and Smith, J. M. (1999). How clonal are human mitochondria?Proceedings of the Royal Society of London, Series B, 266, 477-483CrossRefGoogle ScholarPubMed
Fay, J. M. (1989). Partial completion of a census of the western lowland gorilla (Gorilla g. gorilla (Savage and Wyman)) in southwestern Central African Republic. Mammalia, 53, 203–215CrossRefGoogle Scholar
Fay, J. M. (1997). The ecology, social organization, populations, habitat and history of the western lowland gorilla (Gorilla g. gorilla Savage and Wyman, 1847). PhD thesis, Washington University, St. Louis, MO
Fay, J. M. and Agnagna, M. (1992). Census of gorillas in Northern Republic of Congo. American Journal of Primatology, 27, 275–284CrossRefGoogle Scholar
Field, D., Chemnick, L., Robbins, M., Garner, K., and Ryder, O. (1998). Paternity determination in captive lowland gorillas and wild mountain gorillas by microsatellite analysis. Primates, 39, 199–209CrossRefGoogle Scholar
Fischer, E. (2000). Flora and vegetation of the afromontane region in central and east Africa. Bonn Zoological Monographs, 46, 121–131Google Scholar
Fossey, D. (1983). Gorillas in the Mist. Boston, MA: Houghton Mifflin
Frankham, R. (1995). Inbreeding and extinction: A threshold effect. Conservation Biology, 9, 792–799CrossRefGoogle Scholar
Garner, K. J. and Ryder, O. A. (1996). Mitochondrial DNA diversity in gorillas. Molecular Phylogenetics and Evolution, 6, 39–48CrossRefGoogle ScholarPubMed
Ghiglieri, M. P. (1984). The Chimpanzees of Kibale Forest: A Field Study of Ecology and Social Structure. New York: Columbia University Press
Ginzburg, L. R., Ferson, S., and Akcakaya, H. R. (1990). Reconstructibility of density dependence and the conservative assessment of extinction risks. Conservation Biology, 4, 63–70CrossRefGoogle Scholar
Goldsmith, M. L. (1999). Ecological constraints on the foraging effort of western gorillas (Gorilla gorilla gorilla) at Bai Hoku, Central African Republic. International Journal of Primatology, 20, 1–23CrossRefGoogle Scholar
Goldsmith, M. L. (2000). Effects of ecotourism on the behavioral ecology of Bwindi gorillas, Uganda: Preliminary results. American Journal of Physical Anthropology, Supplement 30, 161Google Scholar
Gonzalez-Kirchner, J. P. (1997). Census of western lowland gorilla population in Rio Muñi region, Equatorial Guinea. Folia Zoologica, 46, 15–22Google Scholar
Goodall, J. (1986). The Chimpanzees of Gombe: Patterns of Behavior. Cambridge, MA: Harvard University Press
Goossens, B., Latour, S., Vidal, C., Jamart, A., Ancrenaz, M., and Bruford, M. W. (2000). Twenty new microsatellite loci for use with hair and fecal samples in the chimpanzee (Pan troglodytes troglodytes). Folia Primatologica, 71, 177–180CrossRefGoogle Scholar
Greenwood, A. and Sarmiento, E. E. (in press). MtDNA, phylogenies and the problems caused by numts. African Primates
Griffiths J. F. (1972). World Survey of Climatology, Vol. 10, Climates of Africa. New York: Elsevier
Groves, C. P. (1970). Population systematics of the gorilla. Journal of Zoology, London, 161, 287–300CrossRefGoogle Scholar
Groves, C. P. (1996). Do we need to update the taxonomy of gorillas?Gorilla Journal, 12, 3–4Google Scholar
Groves, C. P. (2001). Primate Taxonomy. Washington, D.C.: Smithsonian Institution Press
Groves, J. and Maisels, F. (1999). Report on the large mammal fauna of the Takamanda Forest Reserve, South West Province, Cameroon, with special emphasis on the gorilla population. Unpublished report to WWF, Cameroon
Grubb, P. (1990). Primate geography in the Afro-tropical forest biome. In Vertebrates in the Tropics, eds. G. Peters and R. Hutterer, pp. 187–214. Bonn: Museum Alexander Koenig
Gyltenstein, U., Wharton, D., Jossefson, A., and Wilson, A. C. (1991). Parental inheritance of mitochondrial DNA in mice. Nature, 352, 255–257CrossRefGoogle Scholar
Hall, J. S., White, L. J. T., Inogwabini, B.-I., Omari, I., Morland, H. S., Williamson, E. A., Saltonstall, K., Walsh, P., Sikubwabo, C., Bonny, D., Kiswele, K. P., Veder, A., and Freeman, K. (1998). Survey of Grauer's gorillas (Gorilla gorilla graueri) and eastern chimpanzees (Pan troglodytes schweinfurthii) in the Kahuzi-Biega National Park lowland sector and adjacent forest in Eastern Democratic Republic of Congo. International Journal of Primatology, 19, 207–235CrossRefGoogle Scholar
Harcourt, S. (1991). Endangered species. Nature, 354, 10CrossRefGoogle ScholarPubMed
Harcourt, A. H. (1994). Population viability estimates: Theory and practice for a wild gorilla population. Conservation Biology, 9, 134–142CrossRefGoogle Scholar
Harcourt, A. H. (1995). PVA in theory and practice. Conservation Biology, 9, 707–708Google Scholar
Harcourt, A. H. (1996). Is the gorilla a threatened species? How should we judge?Biological Conservation, 75, 165–176CrossRefGoogle Scholar
Harcourt, A. H. and Groom, A. F. (1972). Gorilla census. Oryx, 11, 355–356CrossRefGoogle Scholar
Harcourt, A. H., Kineman, J., Campbell, G., Yamagiwa, J., and Redmond, I. (1983). Conservation and the Virunga gorilla population. African Journal of Ecology, 21, 139–142CrossRefGoogle Scholar
Harcourt, A. H., Parks, S. A., and Woodroffe, R. (2001). Human density as an influence on species/area relationships: Double jeopardy for small African reserves?Biodiversity and Conservation, 10, 1011–1020CrossRefGoogle Scholar
Harris, R. B., Maguire, L. A., and Shaffer, M. L. (1987). Sample sizes for minimum viable population estimation. Conservation Biology, 1, 72–76CrossRefGoogle Scholar
Hart, J. A. and Hall, J. S. (1996). Status of eastern Zaïre's forest parks and reserves. Conservation Biology, 10, 316–327CrossRefGoogle Scholar
Hart, J. A. and Sikubwabo, C. (1994). Exploration of the Maiko National Park of Zaïre 1989–1992. Wildlife Conservation Society Working Paper no. 2. New York: Wildlife Conservation Society
Hawthorne, W. D. and Parren, M. P. E. (2000). How important are forest elephants to the survival of woody plant species in Upper Guinean forests?Journal of Tropical Ecology, 16, 133–150CrossRefGoogle Scholar
Hey, J. (2000). Human mitochondral DNA recombination: Can it be true?Trends in Ecology and Evolution, 15, (5) 181–182CrossRefGoogle Scholar
Hilton-Taylor, C. (2000). 2000 Red List of Threatened Animals. Gland, Switzerland: IUCN
Hochberg, M. E., Michalakis, Y., and Meerus, T. (1992). Parasitism as a constraint on the rate of life-history evolution. Journal of Evolutionary Biology, 5, 491–504CrossRefGoogle Scholar
Jeffreys, A. J., Wilson, V., and Thein, S. L. (1985). Hypervariable minisatellite regions in human DNA. Nature, 314, 67–73CrossRefGoogle ScholarPubMed
Jensen-Seaman, M. I. (2000). Evolutionary genetics of gorillas. PhD thesis, Yale University, New Haven, CT
Jones, C. and Sabater Pi, J. (1971). Comparative ecology of Gorilla gorilla (Savage and Wyman) and Pan troglodytes (Blumenbach) in Rio Muñi, West Africa. Bibliotheca Primatologica, 13, 1–96Google Scholar
Jurke, M. H., Hagey, L. R., Jurke, S., and Czekala, N. M. (2000). Monitoring hormones in urine and feces of captive bonobos (Pan paniscus). Primates, 41, 311–339CrossRefGoogle Scholar
Kalema, G. (1995). Epidemiology of the intestinal parasite burden of mountain gorillas, Gorilla gorilla beringei, in Bwindi Impenetrable National Park, southwest Uganda. Zebra Foundation Newsletter, 1995, 19–33Google Scholar
Kortlandt, A. (1983). Marginal habitats of chimpanzees. Journal of Human Evolution, 12, 231–278CrossRefGoogle Scholar
Kortlandt, A. (1995). A survey of the geographical range, habitats and conservation of the pygmy chimpanzee (Pan paniscus): An ecological perspective. Primate Conservation, 16, 21–36Google Scholar
Kortlandt, A. (1996). An epidemic of limb paresis (polio?) among the chimpanzee population at Beni (Zaïre) in 1964, possibly transmitted by humans. Pan Africa News, 3, 9–10CrossRefGoogle Scholar
Kuman, K., Inbar, M., and Clarke, R. J. (1999). Paleoenviroments and cultural sequence of the Florisbad Middle Stone Age hominid site, South Africa. Journal of Archaeological Sciences, 26, 140–145CrossRefGoogle Scholar
Kyungu, J. C. and Vwirsihikya, K. (1999). The new gorilla reserve at Mbuhi. Gorilla Journal, 19, 8–9Google Scholar
Lee, P. C., Thornback, J., and Bennett, E. L. (1988). Threatened Primates of Africa: The IUCN Red Data Book. Gland, Switzerland: IUCN
Letouzey, R. (1968). Étude Phytogéographique du Cameroon. Paris: Éditions Lechevalier
Lochmiller, R. I. and Deerenberg, C. (2000). Trade-offs in evolutionary immunology: Just what is the cost of immunity?Oikos, 88, 87–89CrossRefGoogle Scholar
Mack, R. N., Simberloff, D., Lonsdale, W. M., Evans, H., Clout, M., and Bazzaz, F. A. (2000). Biotic invasions: Causes epidemiology, global consequences, and control. Ecological Applications, 10, 689–710CrossRefGoogle Scholar
Magliocca, F., Querouil, S., and Gautier-Hion, A. (1999). Population structure and group composition of western lowland gorillas in north-western Republic of Congo. American Journal of Primatology, 48, 1–143.0.CO;2-2>CrossRefGoogle ScholarPubMed
Malbrant, R. and Maclatchy, A. (1949). Faune de L'Equateur Africain Français, Vol. 2, Mammifères. Paris: Paul Lechevalier
Matschie, P. (1904). Bemerkungen über die Gattung Gorilla. Sitzungsberichte des Gesellschaft naturforschender Freunde, Berlin, 1904, 45–53Google Scholar
Mayr, E. (1963). Animal Species and Evolution. Cambridge, MA: Harvard University Press
Mayr, E. (1982). The Growth of Biological Thought, Diversity, Evolution and Inheritance. Cambridge, MA: Harvard University Press
Meder, A. (1995). Regenwälder und Gorillas in Gabun. Gorilla Journal, 11, 16-18Google Scholar
Mitani, M. (1992). Preliminary results of the studies on wild western lowland gorillas and other sympatric diurnal primates in Ndoki forest, Northern Congo. In Topics in Primatology, Vol. 2, Behavior, Ecology and Conservation, eds. N. Itoigawa, Y. Sugiyama, G. P. Sackett, and R. K. R. Thompson, pp. 215–224. Tokyo: Tokyo University Press
Mwanza, N., Maruhashi, T., Yumoto, T., and Yamagiwa, J. (1988). Conservation of eastern lowland gorillas in the Masisi region, Zaïre. Primate Conservation, 9, 111–114Google Scholar
Nishihara, T. (1994). Population density and group organization of gorillas (Gorilla gorilla gorilla) in the Nouabalé-Ndoki National Park. Journal of African Studies, 44, 29–45CrossRefGoogle Scholar
Nishihara, T. (1995). Feeding ecology of western lowland gorillas in the Nouabale-Ndoki National Park, Congo. Primates, 36, 151–168CrossRefGoogle Scholar
Nunney, L. (2000). The limits to knowledge in conservation genetics. In Evolutionary Biology, eds. M.T Clegg, R. J. MacIntyre, and M. Hecht, pp. 179–194. New York: Plenum PressCrossRef
Oates, J. F. (1988). The distribution of Cercopithecus monkeys in the West African forests. In A Primate Radiation: Evolutionary Biology of the African Guenons, eds. A. Gautier-Hion, F. Bourlière, J. P. Gautier, and J. Kingdon, pp. 79–103. Cambridge, U.K.: Cambrige University Press
Oates, J. F. (1998). The gorilla population in the Nigeria–Cameroon border region. Gorilla Conservation News, 12, 3–6Google Scholar
Omari, I., Hart, J. A., Butynski, T. M., Birashirwa, R., Upoki, A., M'Keyo, Y., Bengana, F., Bashonga, M., and Bagurubumwe, N. (1999). The Itombwe massif, Democratic Republic of Congo: Biological surveys and conservation with an emphasis on Grauer's gorilla and birds endemic to the Albertine rift. Oryx, 33, 301–322CrossRefGoogle Scholar
Piton, B., Pointeau, J. H., and Wauthy, B. (1979). Données hydroclimatiques à Point-Noire (Congo) 1953–1977 (+1978 et 1979). Paris: ORSTOM
Plumptre, A. J., and Reynolds, V. (1997). Nesting behavior of chimpanzees: Implications for censuses. International Journal of Primatology, 18, 475–485CrossRefGoogle Scholar
Poon, A. and Otto, S. P. (2000). Compensating for our load of mutations: Freezing the meltdown of small populations. Evolution, 54, 1467–1479CrossRefGoogle ScholarPubMed
Prescott, J., Rapley, W. A., and Joseph, M. M. (1994). Status and conservation of chimpanzee and gorilla in Cameroon. Primate Conservation, 14–15, 7–12Google Scholar
Purvis, A., Gittlemam, J. L., Cowlishaw, G., and Mace, G. M. (2000). Predicting extinction risk in declining species. Proceedings of the Royal Society of London, Series B, 267, 1947–1952CrossRefGoogle ScholarPubMed
Ralls, K., Ballou, J. D., and Templeton, A. (1988). Estimates of lethal equivalents and the cost of inbreeding in mammals. Conservation Biology, 2, 185–193CrossRefGoogle Scholar
Remis, M. J. (1997 a). Ranging and grouping patterns of a western lowland gorilla group at Bai Hokou, Central African Republic. American Journal of Primatology, 43, 111–1333.0.CO;2-#>CrossRefGoogle ScholarPubMed
Remis, M. J. (1997 b). Western lowland gorillas (Gorilla gorilla gorilla) as seasonal frugivores: Use of variable resources. American Journal of Primatology, 43, 87–1043.0.CO;2-T>CrossRefGoogle ScholarPubMed
Remis, M. J. (2000). Preliminary assessment of the impacts of human activities on gorillas Gorilla gorilla gorilla and other wildlife at Dzanga-Sangha reserve, Central African Republic. Oryx, 34, 56–65CrossRefGoogle Scholar
Robinson, J. G. and Boomer, R. E. (1999). Towards wildlife management in tropical forests. Journal of Wildlife Management, 63, 1–13CrossRefGoogle Scholar
Rogers, M. E., Maisels, F., Williamson, E. A., Fernandez, M., and Tutin, C. E. G. (1990). Gorilla diet in the Lopé Reserve, Gabon: A nutritional analysis. Oecologia, 84, 326–339CrossRefGoogle Scholar
Ruvolo, M., Pan, D., Zehr, S., Disotell, T., and Dornum, M. (1994). Gene trees and hominoid phylogeny. Proceedings of the National Academy of Sciences, U.S.A., 91, 8900–8904CrossRefGoogle ScholarPubMed
Sabater Pi, J. (1966) Gorilla attacks against humans in Rio Muñi, West Africa. Journal of Mammalogy, 47, 123–124Google Scholar
Sabater Pi, J. (1977). Contribution to the study of alimentation of lowland gorillas in the Natural State, in Rio Muñi: Republic of Equatorial Guinea (West Africa). Primates, 18, 183–204CrossRefGoogle Scholar
Saltonstall, K., Amato, G. & Powell, J. (1998). Mitochondrial DNA variability in Grauer's gorillas of Kahuzi-Biega National Park. Journal of Heredity, 89, 129–135CrossRefGoogle ScholarPubMed
Sarmiento, E. E. (1985). Functional differences in the skeleton of wild and captive orang-utans and their adaptive significance. PhD thesis, New York University, New York
Sarmiento, E. E. (1988). Anatomy of the hominoid wrist joints, its evolutionary and functional implications. International Journal of Primatology, 9, 281-345CrossRefGoogle Scholar
Sarmiento, E. E. (1994). Terrestrial traits in the hands and feet of gorillas. American Museum Novitates, 3091, 1–56Google Scholar
Sarmiento, E. E. (in press). Cross River gorillas: The most endangered gorilla subspecies. Primate Conservation
Sarmiento, E. E. and Butynski, T. M. (1996). Present problems in gorilla taxonomy. Gorilla Journal, 12, 5–7Google Scholar
Sarmiento, E. E. and Butynski, T. M. (1998). Preliminary report of the Alimbongo, Bingi, Lutunguru survey. Gorilla Conservation News, 12, 12–13Google Scholar
Sarmiento, E. E. and Oates, J. (2000). The Cross River gorillas: A distinct subspecies Gorilla gorilla diehli Matschie 1904. American Museum Novitates, 3304, 1–552.0.CO;2>CrossRefGoogle Scholar
Sarmiento, E. E., Butynski, T., and Kalina, J. (1995). Taxonomic status of the gorillas of the Bwindi-Impenetrable Forest, Uganda. Primate Conservation, 16, 40–43Google Scholar
Sarmiento, E. E., Butynski, T., and Kalina, J. (1996). Gorillas of Bwindi-Impenetrable Forest and the Virunga Volcanoes: Taxonomic implications of morphological and ecological differences. American Journal of Primatology, 40, 1–213.0.CO;2-1>CrossRefGoogle Scholar
Sarmiento, E. E., Stiner, E., and Mowbray, K. (2002). Morphology based systematics and problems with hominoid systematics. New Anatomist, 269, 50–66CrossRefGoogle Scholar
Savage, T. S. and Wyman, J. (1847). Notice of the external characters and habits of Troglodytes gorilla: A new species of orang from the Gaboon river with osteology of the same. Boston Journal of Natural History, 5, 417–441Google Scholar
Sayer, J. A., Harcourt, C. S., and Collins, M. N. (1992). The Conservation Atlas of Tropical Forests: Africa. New York: Simon & Schuster
Schaller, G. B. (1963). The Mountain Gorilla: Ecology and Behavior Chicago, IL: University of Chicago Press
Schouteden, H. (1947). De Zoogdieren van Belgisch-Congo en van Ruanda-Urundi, Vols. 1–3. Tervuren, Belgium: Musée Royal du Congo Belge, Zoologie
Schwartz, M. K., Tallmon, D. A., and Luikart, G. (1999). Using genetics to estimate the size of wild populations: Many methods, much potential, uncertain utility. Animal Conservation, 2, 321–323CrossRefGoogle Scholar
Sholley, C. R. (1990). 1989 Census of mountain gorillas in the Virungas of central Africa. Report to Dian Fossey Gorilla Fund/Morris Animal Foundation, Boulder, CO
Sholley, C. R. (1991). Conserving gorillas in the midst of guerillas. In American Association of Zoological Parks and Aquariums, Annual Conference Proceedings, pp. 30–37
Short, J. (1983). Density and seasonal movements of forest elephants (Loxodonta africana cyclotis Matschie) in Bia National Park, Ghana. African Journal of Ecology, 21, 175–184CrossRefGoogle Scholar
Simpson, G. G. (1961). Principles of Animal Taxonomy. New York: Columbia University Press
Stromayer, A. K. and Ekobo, A. (1992). The distribution and number of forest-dwelling elephants in extreme south-eastern Cameroon. Pachyderm, 15, 9–14Google Scholar
Struhsaker, T. T., Lwanga, J. S., and Kasenene, J. M. (1996). Elephants, selective logging and forest regeneration in the Kibale forest Uganda. Journal of Tropical Ecology, 12, 45–64CrossRefGoogle Scholar
Taylor, B. L. (1994). The reliability of using population viability analysis for risk classification of species. Conservation Biology, 9, 551–558CrossRefGoogle Scholar
Templeton, A. R. (1998). The role of molecular genetics in speciation studies. In Molecular Approaches to Ecology and Evolution, eds. R. De Salle and B. Schierwater, pp. 131–156. Boston, MA: Birkhauser PressCrossRef
Thomas, C. D. (1990). What do real population dynamics tell us about minimum population size?Conservation Biology, 4, 324–327CrossRefGoogle Scholar
Tutin, C. E. G. and Fernandez, M. (1984). Nationwide census of gorilla (Gorilla g. gorilla) and chimpanzee (Pan t. troglodytes) populations in Gabon. American Journal of Primatology, 6, 313–334CrossRefGoogle Scholar
Tutin, C. E. G. and Fernandez, M. (1985). Foods consumed by sympatric populations of Gorilla g. gorilla and Pan t. troglodytes in Gabon: Some preliminary data. International Journal of Primatology, 6, 27–43CrossRefGoogle Scholar
Tutin, C. E. G. and Fernandez, M. (1993). Relationships between minimum temperatures and fruit production in some tropical forest trees in Gabon. Journal of Tropical Ecology, 9, 241–248CrossRefGoogle Scholar
Tutin, C. E. G., Parnell, R. J., White, L. J. T., and Fernandez, M. (1995). Nest building by lowland gorillas in Lopé Reserve, Gabon: Environmental influences and implications for censusing. International Journal of Primatology, 16, 53–76CrossRefGoogle Scholar
Usongo, L. (1998 a). Conservation status of primates in Cameroon. Primate Conservation, 18, 59–65Google Scholar
Usongo, L. (1998 b). Conservation status of primates in the proposed Lobéké Forest Reserve, southeast Cameroon. Primate Conservation, 18, 66–68Google Scholar
Usongo, L. and Fimbel, C. (1995). Preliminary survey of arboreal primates in Lobéké Forest Reserve, southeast Cameroon. African Primates, 1(2), 46–48Google Scholar
Vanderbroek, G. (1959). Notes écologiques sur les anthropoides africains. Annales de la Société Royale Zoologique de Belgique, 89, 203–211Google Scholar
Vedder, A. L. (1989). Feeding ecology and conservation of the mountain gorilla (Gorilla gorilla beringei). PhD thesis, University of Wisconsin, Madison, WI
Voysey, B. C., McDonald, K. E., Rodgers, M. E., Tutin, C. E. G., and Parnell, R. J. (1999). Gorillas and seed dispersal in the Lopé Reserve, Gabon. II: Survival and growth of seedlings. Journal of Tropical Ecology, 15, 39–60CrossRefGoogle Scholar
Vucetich, J. A. and Waite, T. A. (2000). Is one migrant per generation sufficient for the genetic management of fluctuating populations?Animal Conservation, 3, 261–266CrossRefGoogle Scholar
Wallis, J. and Lee, D. R. (1999). Primate conservation: The prevention of disease transmission. International Journal of Primatology, 20, 803–826CrossRefGoogle Scholar
Walsh, P. D. (1995). PVA in theory and practice. Conservation Biology, 9, 704–705CrossRefGoogle Scholar
Walter, H. S. (1990). Small viable population: The red-tailed hawk of Socorro Island. Conservation Biology, 4, 441–443CrossRefGoogle Scholar
Waples, R. (1991). Genetic methods for estimating the effective population size from temporal changes in allele frequencies. Genetics, 152, 755–781Google Scholar
Wasser, S. K. (1996). Reproductive control in wild baboons measured by fecal steroids. Biological Reproduction, 55, 393–399CrossRefGoogle ScholarPubMed
Watt, A. (1956). Working Plan for Mgahingi Central Forest Reserve Kigezi District, Uganda. Kampala: Forest Department
Watts, D. P. (1984). Composition and variability of mountain gorilla diets in the central Virungas. American Journal of Primatology, 7, 323–356CrossRefGoogle Scholar
Watts, D. P. (1998 a). Seasonality in the ecology and life histories of mountain gorillas (Gorilla gorilla beringei). International Journal of Primatology, 19, 929–948CrossRefGoogle Scholar
Watts, D. P. (1998 b). Long-term habitat use by mountain gorillas (Gorilla gorilla beringei). I: Consistency, variation, and home range size and stability. International Journal of Primatology, 19, 651–680CrossRefGoogle Scholar
Watts, D. P. (1998 c). Long-term habitat use by mountain gorillas (Gorilla gorilla beringei). II: Reuse of foraging areas in relation to resource abundance, quality and depletion. International Journal of Primatology, 19, 681–702CrossRefGoogle Scholar
Weber, A. W. and Vedder, A. (1983). Population dynamics of the Virunga gorillas: 1959–1978. Biological Conservation, 26, 341–366CrossRefGoogle Scholar
White, F. (1983). The Vegetation of Africa. Paris: UNESCO
White, L. J. T. (1992). Vegetation history and logging disturbance: Effects on rainforest mammals in the Lopé Reseserve, Gabon. PhD thesis, University of Edinburgh, Edinburgh, U.K.
White, L. J. T., Rogers, M. E., Tutin, C. E. G., Williamson, E. A., and Fernandez, M. (1995). Herbaceous vegetation in different forest types in the Lopé Reserve, Gabon: Implications for keystone food availability. African Journal of Ecology, 33, 124–141CrossRefGoogle Scholar
Williamson, E. A., Tutin, C. E. G., Rogers, M. E., and Fernandez, M. (1990). Composition of the diet of lowland gorillas at Lopé in Gabon. American Journal of Primatology, 21, 265–277CrossRefGoogle Scholar
Williamson, E. G. and Slatkin, M. (1999). Using maximum likelihood to estimate population size from temporal changes in allele frequencies. Genetics, 152, 755–781Google ScholarPubMed
Williamson, L. & Usongo, L. (1996). Survey of gorillas Gorilla gorilla and chimpanzees Pan troglodytes in the Réserve de Faune du Dja, Cameroon. African Primates, 2(2), 67–72Google Scholar
Wolfe, N. D., Escalante, A. A., Karesh, W. B., Kilbourn, A., Spielman, A., and Lal, A. (1998). Wild primate populations in emerging infectious disease research: The missing link?Emerging Infectious Diseases, 4, 149–158CrossRefGoogle ScholarPubMed
Wu, C. (2000). Genetics of species differentiation. In Evolutionary Biology, eds. M. T. Clegg and M. Hecht, pp. 239–248. New York: Plenum PressCrossRef
Yamagiwa, J. (1983). Diachronic changes in two eastern lowland gorilla groups (Gorilla gorilla graueri) in the Mt. Kahuzi region, Zaïre. Primates, 24, 174–183CrossRefGoogle Scholar
Yamagiwa, J. (1999). Slaughter of gorillas in the Kahuzi-Biega park. Gorilla Journal, 19, 4–6Google Scholar
Yamagiwa, J., Mwanza, N., Yumoto, T., and Maruhashi, I. (1992). Travel distances and food habits of eastern lowland gorillas: A comparative analysis. In Topics in Primatology, vol. 2, Behavior, Ecology and Conservation, eds. N. Itoigawa, Y. Sugiyama, G. P. Sackett, and R. K. R. Thompson, pp. 267–281. Tokyo: Tokyo University Press
Yamagiwa, J., Mwanza, N., Spangenberg, A., Maruhashi, T., Yumoto, T., Fischer, A., and Steinhauer-Burkart, B. (1993). A census of eastern lowland gorillas Gorilla gorilla graueri in Kahuzi Biega National Park, with reference to mountain gorillas G. g. beringei in the Virunga region, Zaïre. Biological Conservation, 64, 83–89CrossRefGoogle Scholar

Save book to Kindle

To save this book to your Kindle, first ensure [email protected] is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Available formats
×

Save book to Dropbox

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Dropbox.

Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

Available formats
×