Cooperative Fish and Wildlife Research Units Program: Maine
Education, Research and Technical Assistance for Managing Our Natural Resources

Maine Project

Amphibian use of wetland-limited landscapes (Collaborator: A.J.K. Calhoun, UMaine)

January 2010 - December 2016


Participating Agencies

  • Maine EPSCor Project

Amphibian populations face a multitude of complex threats, and habitat loss or modification is contributing to amphibian declines globally. This study examines vernal pool breeding amphibian species’ use of wetland-limited landscapes, to understand factors potentially affecting persistence of these species in western and northern Maine. We are monitoring movements of post-breeding wood frogs with radio telemetry to determine their hibernacula selection, and we resume tracking in late winter to determine wetlands used for breeding. The habitat use information gained from our telemetry studies will be combined with data from presence and reproductive effort surveys to improve our understanding of how wetlands and the surrounding high elevation landscapes are used throughout the year by pool-breeding species in Maine.

Research Publications Publication Date
Groff, L.A., C.S. Loftin, and A.J.J. Calhoun. 2016. Predictors of Breeding Site Occupancy by Amphibians in Montane Landscapes. Journal of Wildlife Management. DOI: 10.1002/jwmg.21184 October 2016
Groff, L.A., A.L. Pitt, R.F. Baldwin, A.J.K. Calhoun, and C.S. Loftin. 2015. Evaluation of a waistband for attaching external transmitters to anurans. Wildlife Society Bulletin. | Download July 2015
Groff, L.A., A.J.K. Calhoun, and C.S. Loftin. 2016. Hibernal Habitat Selection by Wood Frogs (Lithobates sylvaticus) in a Northern New England Montane Landscape. Journal of Herpetology 50(4):559-569. | Abstract October 2016
Groff, L.A., A.J.K. Calhoun, C.S. Loftin. 2017. Amphibian Terrestrial Habitat Selection and Movement Patterns Vary With Annual Life History Period. Canadian Journal of Zoology 95:433-442. July 2017
Groff, L.A., A.J.K Calhoun, C.S. Loftin. 2015. LITHOBATES SYLVATICUS (Wood Frog). HABITAT USE. Northeastern Naturalist 46(2): 2015. | Download June 2015
Theses and Dissertations Publication Date
Groff, L. 2016. The habitat ecology of pool breeding amphibians during all annual life history periods in the Mountains of the Dawn. Dissertation. The University of Maine, Orono, Maine. 147 pp. December 2016