Long-term monitoring of amphibian populations: methods and importance

Vargas Cáceres, Liz Mabel

In the last decade, there has been particular concern about the apparent widespread decline of many amphibian populations. Aside anthropogenic stressors, there are large, natural fluctuations in amphibian populations that need to be established through long-term monitoring programs with sufficient spatial scale to preclude the misinterpretation of preliminary data cause y variations in natural factors. The true utility of multiple, long-term studies is an understanding of how geographic and species-specific differences affect population fluctuations. Despite the obvious importance of time series analyses in this process, they are still rare in amphibian ecology. The literary review of the main causes of amphibian population declines, dynamics of the amphibians, the meta-analysis of the available long-term publication reports of amphibian population trends available at this point in time, as well as the active involvement in field work, data-collection, and the preparation of a manuscript of 11-year monitoring of abundances of the agile frog (Rana dalmatina) are the main purposes of this bachelor thesis.

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