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Consequences of Habitat Fragmentation on Age Structure and Life History in a Tortoise Population

César Aponte, Guillermo R. Barreto and John Terborgh
Biotropica
Vol. 35, No. 4 (Dec., 2003), pp. 550-555
Stable URL: http://www.jstor.org/stable/30043077
Page Count: 6
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Consequences of Habitat Fragmentation on Age Structure and Life History in a Tortoise Population
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Abstract

We studied changes in a population of red-footed Amazonian tortoises, Geochelone carbonaria, consequent to isolation in an insular forest fragment. Altered age structure, population density, and body growth rate are shown here for the first time to be associated responses. Age structure was strongly biased toward juveniles and growth rates were reduced compared to the mainland. Our data suggest that density-dependent processes induced by habitat fragmentation changed demography and life history parameters in a scant 16 years.

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