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Trends in anuran occupancy from northeastern states of the North American Monitoring Program

January 15, 2012

We present the first multi-year occupancy trends from North American Amphibian Monitoring Program (NAAMP) data in 10 northeastern states using seven years of data (2001-2007). NAAMP uses a calling survey technique where observers listen for anuran vocalizations along assigned random roadside routes. We were able to assess occupancy trends in 10 northeastern states for 16 species and one species complex, for 94 species/state combinations. We found no significant trends for 64 species/state combinations. For the remaining 30 species/state combinations with significant trends, these split between declining and increasing trends. On a species-by-species basis, two species had declining trends, with significant trends in six states for Pseudacris crucifer and four states for Bufo americanus. The trends of Rana catesbeiana significantly increased in four states, but had no trend in the remaining states.

Citation Information

Publication Year 2009
Title Trends in anuran occupancy from northeastern states of the North American Monitoring Program
DOI
Authors Linda Weir, Ian J. Fiske, J. Andrew Royle
Publication Type Article
Publication Subtype Journal Article
Series Title Herpetological Conservation and Biology
Series Number
Index ID 70003425
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center