Lithobates sylvaticus (wood frog). Habitat use.

Lithobates sylvaticus is the second most widely distributed anuran in North America (Martof and Humphries 1959. Am. Midl. Nat. 61:350–389), and its habitat use reflects the environmental variation that exists across its geographic range (Semlitsch et al. 2009. BioScience 59:853–862). Although L. sylvaticus post-breeding habitat selection has been described in Missouri (Rittenhouse and Semlitsch 2007. J. Herpetol. 41:645–653) and Maine (Baldwin et al. 2006. J. Herpetol. 40:442–453; Blomquist and Hunter 2010. Ecoscience 17:251–264), these studies did not report the species’ use of glacial erratics, or boulders. We conducted our study in Maine’s Nahmakanta Public Reserved Land (45.68210°N, 69.12940°W, WGS84; 407–530 m elev.), which is located in the Quebec/New England Boundary Mountains ecoregion.