Naïve estimates (number of sites where we observed each species relative to the total number of sites we surveyed) from daytime surveys conducted during 2002 to 2005.

NS = the Neal Smith National Wildlife Refuge from 2004 to 2005; UMR = the Upper Mississippi National Wildlife and Fish Refuge from 2002 to 2005; SCNSR = the St. Croix National Scenic Riverway from 2002 to 2005; VNP = Voyageurs National Park from 2002 to 2005. Dashes indicate management areas outside of the described range for that species.1 The ranges of Hyla chrysoscelis and H. versicolor overlapped and they were indistinguishable visually, but we assumed we could distinguish their calls [34]. The detections listed in this column are based upon the numbers of sites where we heard H. chrysoscelis call.2 The combined totals of sites where we detected H. chryoscelis via calls, sites where we detected H. versicolor via calls, and sites where we detected either H. chrysoscelis or versicolor visually, but could not distinguish between them. Thus, the numbers of sites with detections listed in the previous column, Hyla chrysoscelis, are included in the totals here.3 This management area was very close to the edge of the described range of this species. We did not detect it there.Note: We also found Necturus maculosus, Hemidactylium scutatum, and Plethodon cinereus in the SCNSR during small numbers of targeted searches.Naïve estimates (number of sites where we observed each species relative to the total number of sites we surveyed) from daytime surveys conducted during 2002 to 2005.