The tailed frog (Ascaphus truei) is designated “at risk” or “of special concern” in British Columbia, Washington, Oregon, and California, yet none of these jurisdictions provide riparian buffers around small, non-fish-bearing streams where tailed frogs are found. We are investigating the movement patterns and dispersal abilities of tailed frogs in south coastal British Columbia. Results of larval research illustrate that larvae in streams flowing through old-growth forests moved about 7.5 times as far as larvae in streams flowing through clearcuts. Pitfall trapping results reveal that, although most frogs were found in streamside arrays, some individuals moved as far as 100 m from the nearest stream. Little is known about the dispersal abilities of tailed frogs, despite the implications to forest management. Our results will provide information on the potential benefits of streamside buffers and wildlife habitat areas to connectivity in fragmented landscapes.
Wahbe, Tanya R., Bunnell, Fred L.; Bury, R. Bruce. 1999. Defining Wildlife Habitat Areas for Tailed Frogs (in Proc. Conference Biology & Management of Species and Habitats at Risk). Ministry of Environment, Lands and Parks. Conference Biology & ManagementProceedings. Vol. 2