Multi-year data from satellite- and ground-based sensors show details and scale matter in assessing climate’s effects on wetland surface water, amphibians, and landscape conditions
Fig 2
Examples of fast Fourier transforms of recordings of the calls of Pseudacris maculata (chorus frog), P. crucifer (spring peeper), Hyla chyrsoscelis/versicolor (eastern or Cope’s gray treefrog–we did not differentiate), and Lithobates sylvaticus (wood frog) from site SC4DB9 in the St. Croix National Scenic Riverway during 2008 (first three species) and 2009 (L. sylvaticus) showing the unique patterns of peaks in sound energy for each species.