Amphibian encounter data and associated covariate data from the Midwest Region of Amphibian Research and Monitoring Initiative (ARMI) surveys 2002-2012

This data set contains information on detections of anuran (i.e., frogs and toads) species at six different management areas in the midwestern United States from 2002 to 2012. From 2002 to 2005 anuran communities were surveyed during the day using multiple methods at individual study wetlands—visual encounter surveys, dip net surveys, and calling surveys using multiple observers in most cases. Data are presented from each survey. From 2008 to 2012 amphibian communities were surveyed through detections of vocalizing anurans recorded by automated recording units. Automated recording units recorded five minutes at the top of every hour for the entire field season (typically April through October). Recorder data are presented for up to 15 confirmed detection dates per site per species. Original raw acoustic recordings used to create this data table are archived at the Upper Midwest Environmental Science Center.