. L'écologie des folivores arboricole : un colloque organisé au Centre de recherche et de conservation, National Zoological Park, Smithsonian Institution, du 29 au 31 mai 1975. Folivores ; Écologie forestière ; les feuilles, les Mammifères Mammifères. d'analyser les caractéristiques de la distribution de l'espèce, j'ai été intrigué par la suite d'hypoth- esis, proposé par Mac Arthur et Levins (1964) : "... des espèces qui se spécialisent sur une partie des pro- mélange de deux ou de plusieurs ressources seront trouvés seulement où leur proportion est favorisée, et seront remplacés par d'autres espèces dans d'autres habitats lor

• Contributeur: The Book Worm
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. The Ecology of arboreal folivores : a symposium held at the Conservation and Research Center, National Zoological Park, Smithsonian Institution, May 29-31, 1975. Folivores; Forest ecology; Leaves; Mammals; Mammals. analyzing patterns of distribution of the primate species, I have been intrigued by the following hypoth- esis proposed by Mac Arthur and Levins (1964): "... species which specialize on a particular pro- portion of mixture of two or more particular resources will be found only where their favored proportion is found, and will be replaced by other species in other habitats where the proportion of the mixture changes to one on which the new species are more effective (p. 1207)" It has been found in this study and in studies by the Hladiks (Hladik and Hladik, 1969, 1972; see also Chivers, 1973, and various papers in Montgomery, editor, 1978), that sympatric, forest- dwelling primate species differ in their dietary pro- portions of food types (e.g., fruit, leaves, buds, in- sects, etc.). The diets of species with larger body size are composed primarily of plant foods, and each species is characterized by a proportion of mixture of various plant parts. In this paper I will examine the extent to which the spatial distributions of several sympatric primate taxa are related to the distribution of their dietary proportions in the same area. The components of the diet to be considered are leaves and fruit in a first attempt to perceive and explain some order in the patterns of distribution. Background. !0f -Land above 150 meters Figure 1. The Kutai Nature Reserve. The area within the boundaries is approximately 200 km2. Boundaries are shown as they were in 1970. Since then the eastern boundary has been moved to the sea, and the southern boundary has been moved approximately 15 km north. Location and characteristics of the study area The study area lies in what was then the northeast corner of the Kutai Nature Reserve on the south bank of the Sengata Riv

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• arboricole
• dietary
• ecology
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• mammifères
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