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Animal Biodiversity and Conservation. Volume 24.2 (2001) Pages: 25-44

Declining amphibian populations: a global phenomenon in conservation biology

Gardner, T.

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Abstract

The majority of the recent reductions in the Earth’s biodiversity can be attributed to direct human impacts on the environment. An increasing number of studies over the last decade have reported declines in amphibian populations in areas of pristine habitat. Such reports suggest the role of indirect factors and a global effect of human activities on natural systems. Declines in amphibian populations bear significant implications for the functioning of many terrestrial ecosystems, and may signify important implications for human welfare. A wide range of candidates have been proposed to explain amphibian population declines. However, it seems likely that the relevance of each factor is dependent upon the habitat type and species in question, and that complex synergistic effects between a number of environmental factors is of critical importance. Monitoring of amphibian populations to assess the extent and cause of declines is confounded by a number of ecological and methodological limitations.

Keywords

Declining amphibians, Environmental degradation, Indirect human impact, Population monitoring

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Gardner, T., 2001. Declining amphibian populations: a global phenomenon in conservation biology. Animal Biodiversity and Conservation, 24: 25-44

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