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A Preliminary Analysis of a Neotropical Mammal Fauna
John F. Eisenberg and Richard W. Thorington, Jr.
Vol. 5, No. 3 (Dec., 1973), pp. 150-161
Published by: Association for Tropical Biology and Conservation
Stable URL: http://www.jstor.org/stable/2989807
Page Count: 12
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The abundance and biomass of species of nonvolant mammals on Barro Colorado Island are estimated and compared with data from other areas. The edentates, particularly the sloths, are shown to be dominant elements in neotropical forests. The sloths and howler monkeys together constitute more than 50 percent of the biomass of mammals, emphasizing the importance of the forest canopy. The bulk of the mammalian biomass is maintained by species which are browsers or frugivores and browsers. The total energy consumption of each species is estimated and the metabolic rate of the whole mammalian fauna is judged to be between 3000 and 4000 kilocalories per hectare per day on Barro Colorado Island.
Biotropica © 1973 Association for Tropical Biology and Conservation