Consequences of Habitat Fragmentation on Age Structure and Life History in a Tortoise Population1

Autor:	Guillermo R. Barreto, César Aponte, John Terborgh
Rok vydání:	2003
Předmět:	Tropical and subtropical dry broadleaf forests education.field_of_study Habitat fragmentation Tortoise Age structure Ecology Amazonian Population Biology education Population density Ecology Evolution Behavior and Systematics Life history theory
Zdroj:	Biotropica. 35:550-555
ISSN:	1744-7429 0006-3606
DOI:	10.1111/j.1744-7429.2003.tb00612.x
Popis:	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.
Databáze:	OpenAIRE
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