Southeast regional and state trends in anuran occupancy from calling survey data (2001-2013) from the North American Amphibian Monitoring Program

Oswaldo Villena Carpio; J. Andrew Royle; Linda Weir; Tasha M. Foreman; Kimberly D. Gazenski; Evan H. Campbell Grant

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Southeast regional and state trends in anuran occupancy from calling survey data (2001-2013) from the North American Amphibian Monitoring Program

Oswaldo Villena Carpio·J. Andrew Royle·Linda Weir·Tasha M. Foreman·Kimberly D. Gazenski·Evan H. Campbell Grant

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Abstract

We present the first regional trends in anuran occupancy for eight states of the southeastern United States, based on 13 y (2001–2013) of North American Amphibian Monitoring Program (NAAMP) data. The NAAMP is a longterm monitoring program in which observers collect anuran calling observation data at fixed locations along random roadside routes. We assessed occupancy trends for 14 species. We found weak evidence for a general regional pattern of decline in calling anurans within breeding habitats along roads in the southeastern USA over the last 13 y. Two species had positive regional trends with 95% posterior intervals that did not include zero ( Hyla cinerea and Pseudacris crucifer ). Five other species also showed an increasing trend, while eight species showed a declining trend, although 95% posterior intervals included zero. We also assessed state level trends for 107 species/state combinations. Of these, 14 showed a significant decline and 12 showed a significant increase in occupancy (i.e., credible intervals did not include zero for these 26 trends).

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Herpetological Conservation and Biology Article

Source-reported bounding extent: 24.552103° to 39.427618° latitude; -94.043088° to -75.242266° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Oswaldo Villena Carpio, J. Andrew Royle, Linda Weir, Tasha M. Foreman, Kimberly D. Gazenski, Evan H. Campbell Grant. 2016. Southeast regional and state trends in anuran occupancy from calling survey data (2001-2013) from the North American Amphibian Monitoring Program. https://pubs.usgs.gov/publication/70176230

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