Department of Environmental Studies
A survey of stream-dwelling salamanders in New Hampshire's White Mountains revealed the presence of three species: dusky salamander (Desmognathus foscus), northern two-lined salamander (Eurycea bislineata) and spring salamander (Gyrinophilus phorphyriticus). The greatest relative abundance was a larval D. fuscus although temporal factors along with exclusive focus on in-stream habitat may have obscured the presence and activities of the other species. Analysis of the distribution of the 126 D. fuscus larvae over 1350 meters of stream bed suggest a positive correlation with increasing stream gradient up to 14 degrees, although habitat variables may play a role. One possible explanation is the deposition of sediment at the lower gradients reducing the availability of suitable microhabitat to provide cover for larval salamanders.