The sympatric zones of the red-backed salamander and Peaks of Otter salamander are relatively static. When species proportions at one sympatric site were compared over a 10-year period at a site where the forest was undisturbed, no significant change was noted, with P. hubrichti comprising about 60-70% of salamanders found. However, much of the rest of the sympatric zone is located within timbering areas, where deforestation may affect the environmental factors involved in the balance of the two species.