Abstract
We studied seasonal change in habitat use by chimpanzees in the Kalinzu Forest, Uganda. The forest comprises various types of vegetation. For each vegetation type, we compared number of chimpanzees (per km2) that used the vegetation with fruit availability in different census periods. We estimated the number of chimpanzees by nest count and fruit availability via density of fallen fruit. The mixed mature forest contained a large amount of fruit during the high-fruiting season, but it decreased rapidly in the low-fruiting season. The number of chimpanzees also decreased in mixed mature forest in approximate proportion with fruit availability. In the Parinari-dominated mature and secondary forests, both fruit availability and number of chimpanzees were very low throughout the study. In the Musanga-dominated secondary forest, the number of chimpanzees increased toward the low-fruiting season, though the fruit availability decreased slightly. A multiple regression analysis showed that various fruits had significant effects on the number of chimpanzees during the high-fruiting season, while only Musanga leo-errerae had a significant effect during the low-fruiting season. The results suggest that the fruit of Musanga leo-errerae functions as a fallback food, and a combination of different vegetation types supports the chimpanzees in the Kalinzu Forest.
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REFERENCES
Boesch, C. (1996). Social grouping in Taï chimpanzees. In McGrew, E. W., Marchant, L. F., and Nishida, T. (eds.), Great Ape Societies, Cambridge University Press, Cambridge, pp. 101-113.
Chapman, L., Wrangham, R., Hunt, K., Gebo, D., and Gardner, L. (1992). Estimators of fruit abundance of tropical trees. Biotropica 24: 527-531.
Chapman, C. A., Wrangham, R.W., Chapman, L. J., Kennard, D. K., and Zanne, A. E. (1999). Fruit and flower phenology at two sites in Kibale National Park, Uganda. J. of Trop. Ecol. 15: 189-211.
Furuichi, T., Hashimoto, C., and Tashiro, Y. (2001). Extended application of marked-nest census method to examine seasonal changes in habitat use by chimpanzees. Int. J. Primatol. 22: 913-928.
Furuichi, T., Inagaki, H., and Angoue-Ovono, S. (1997). Population density of chimpanzees and gorillas in the Petit Loango Reserve, Gabon: Employing a new method to distinguish between nests of the two species. Int. J. Primatol. 18: 1029-1046.
Gautier-Hion, A., and Michaloud, G. (1989). Are figs always keystone resources for tropical frugivorous vertebrates? A test in Gabon. Ecology 70: 1826-1833.
Ghiglieri, M. P. (1984). The Chimpanzees of Kibale Forest, Columbia University Press, New York.
Hashimoto, C. (1995). Population census of the chimpanzees in the Kalinzu Forest, Uganda: Comparison between methods with nest counts. Primates 36: 477-488.
Hashimoto, C., Furuichi, T., Tashiro, Y., and Kimura, D. (1999). Vegetation of the Kalinzu Forest, Uganda: Ordination of forest types using principal component analysis. Afr. Study Monogr. 20: 229-239.
Hashimoto, C., Furuichi, T., and Tashiro, Y. (2000). New evidence of ant dipping using wands and meat eating by wild chimpanzees in the Kalinzu Forest, Uganda. Primates 41: 105-109.
Hashimoto, C., Tashiro, Y., Kimura, D., Enomoto, T., Ingmanson, E. J., Idani,G., and Furuichi, T. (1998). Habitat use and ranging of wild bonobos (Pan paniscus) atWamba. Int. J. Primatol. 19: 1045-1060.
Howard, P. C. (1991). Nature Conservation in Uganda's Tropical Forest Reserves, IUCN, Gland, Switzerland.
Idani, G., Kuroda, S., Kano, T., and Asato, R. (1994). Flora and vegetation of Wamba forest, central Zaire with reference to bonobo (Pan paniscus) foods. Tropics 3: 309-332.
Isabirye-Basuta, G. (1989). Feeding ecology of chimpanzees in the Kibale Forest, Uganda. In Heltne, P. G., and Marquardt, L. A. (eds.), Understanding Chimpanzees, Harvard Univercity. Press, Cambridge, MA, pp. 116-127.
Johns, A. D., and Skorupa, J. P. (1987). Responses of rain-forest primates to habitat disturbance: A review. Int. J. Primatol. 8: 157-191.
Kano, T., and Mulavwa, M. (1984). Feeding ecology of the pygmy chimpanzees (Pan paniscus) of Wamba. In Susman, R. L. (ed.), The Pygmy Chimpanzee, Plenum, New York, pp. 233-274.
Kuroda, S., Nishihara, T., Suzuki, S., and Oko, R.A. (1996). Sympatric chimpanzees and gorillas in the Ndoki Forest, Congo. In McGrew, E. W., Marchant, L. F., and Nishida, T. (eds.), Great Ape Societies, Cambridge University Press, Cambridge, pp. 71-81.
Leighton, M., and Leighton, D. R. (1983). Vertebrate response to fruiting seasonality within a Bornean rain forest. In Sutton, S. L., Whitmore, T. C., and Chadwick, A. C. (eds.), Tropical Rain Forest: Ecology and Management, Blackwell Scientific, London, pp. 181-196.
Matsumoto-Oda, A., Hosaka, K., Huffman, M. A., Kawanaka, K. (1998). Factors affecting party size in chimpanzees of the Mahale Mountains. Int. J. Primatol. 47: 197-207.
Malenky, R. K., Kuroda, S., Vineberg, E. O., and Wrangham, R.W. (1994). The significance of terrestrial herbaceous foods for bonobos, chimpanzees, and gorillas. In Wrangham, R.W., McGrew, W. C., deWaal, F. B. M., and Heltne, P. G. (eds.), Chimpanzee Cultures, Harvard University Press, Cambridge, MA, pp. 59-75.
Malenky, R. K., and Stiles, E. W. (1991). Distribution of terrestrial herbaceous vegetation and its consumption by Pan paniscus in the Lomako Forest, Zaire. Am. J. Primatol. 23: 153-169.
Malenky, R. K., and Wrangham, R.W. (1994). A quantitative comparison of terrestrial herbaceous food consumption by Pan paniscus in the Lomako Forest, Zaire, and Pan troglodytes in the Kibale Forest, Uganda. Am. J. Primatol. 32: 1-12.
Oats, 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.
Plumptre, A. J., and Reynolds, V. (1994). The effect of selective logging on the primate populations in the Budongo Forest Reserve, Uganda. J. Appl. Ecol. 31: 631-641.
Plumptre, A. J., and Reynolds, V. (1996). Censusing chimpanzees in the Budongo Forest, Uganda. Int. J. Primatol. 17: 85-99.
Skorupa, J. P. (1986). Responses of rainforest primates to selective logging in Kibale Forest, Uganda:Asummary report. In Benirschke, K. (ed.), Primates: The Road to Self Sustaining Populations, Springer, Berlin, pp. 57-70.
Struhsaker, T. T. (1997). Ecology of an African Rain Forest, University Press of Florida, Florida.
Takemoto,H. (2000). Seasonal chinges in feeding behaviors of chimpanzees in response to food availability. Primate Res. in press (Japanese abstract).
Tashiro, Y., Furuichi, T., and Hashimoto, C. (1999). A preliminary report of the feeding ecology of chimpanzees in the Kalinzu Forest Reserve, Uganda: Fecal analysis and habitat use. Primate Res. 15: 179-185 (in Japanese with English summary).
Terborgh, J. (1986). Keystone plant resources in the tropical forest. In Soulé, I., and Michael, E. (eds.), Conservation Biology, Sinauer, Sunderland, MA, pp. 330-344.
Thomas, S. C. (1991). Population densities and patterns of habitat use among anthropoid primates of the Ituri Forest, Zaire. Biotropica 23: 68-83.
Tutin, C. E. G., and Fernandez, M. (1993). Composition of the diet of chimpanzees and comparisons with that of sympatric lowland gorillas in the Lopé Reserve, Gabon. Am. J. Primatol. 30: 195-211.
Tutin, C. E. G., Rebecca, M. H., White, L. J. T., and Harrison, M. J. S. (1997). The primate community of the Lopé Reserve, Gabon: Diets, responses to fruit scarcity, and effects on biomass. Am. J. Primatol. 42: 1-24.
White, F. J. (1998). Seasonality and socioecology: The importance of variation in fruit abundance to bonobo sociality. Int. J. Primatol. 19: 1013-1027.
White, L. J. T. (1994). Biomass of rain forest mammals in the Lopé Reserve, Gabon. J. Anim. Ecol. 63: 499-512.
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. Afr. J. Ecol. 33: 124-141.
Wrangham, R. W. (1986). Ecology and social relationships in two species of chimpanzee. In Rubenstein, D. L., and Wrangham, R. W. (eds.), Ecological Aspect of Social Evolution, Princeton University Press, Princeton, pp. 352-378.
Wrangham, R. W., Chapman, C. A., Clark-Arcadi, A. P., and Isabirye-Basuta, G. (1996). Social ecology of Kanyawara chimpanzees: Implications for understanding the costs of great ape groups. In McGrew, E. W., Marchant, L. F., and Nishida, T. (eds.), Great Ape Societies, Cambridge University Press, Cambridge, pp. 45-57.
Wrangham, R. W., Conklin, N. L., Chapman, C. A., and Hunt, K. D. (1991). The significance of fibrous foods for Kibale Forest chimpanzees. Phil. Trans. R. Soc. Lond. B 334: 171-178.
Wrangham, R.W., Conklin, N. L., Etot, G., Obua, J., Hunt, K. D., Hauser, M. D., and Clark, A. P. (1993). The value of figs to chimpanzess. Int. J. Primatol. 14: 243-256.
Yamakoshi, G. (1998). Dietary responses to fruit scarcity of wild chimpanzees at Bossou, Guinea: Possible implications for ecological importance of tool use. Am. J. Phys. Anthropol. 106: 283-295.
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Furuichi, T., Hashimoto, C. & Tashiro, Y. Fruit Availability and Habitat Use by Chimpanzees in the Kalinzu Forest, Uganda: Examination of Fallback Foods. International Journal of Primatology 22, 929–945 (2001). https://doi.org/10.1023/A:1012009520350
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DOI: https://doi.org/10.1023/A:1012009520350