Terrestrial lungless salamanders are known to reach very high densities in forested ecosystems of the United States.
They can be important for the top down regulation of invertebrates
Diets of 57% (31 of 54) Plethodon salamanders are still poorly known
The Cumberland Plateau Salamander (Plethodon kentucki) is a large plethodontid common in the Central Appalachians, however, its diet is only known from West Virginia
Hutton, Jacob M.; Price, Steven J.; and Richter, Stephen C., "The Diet of the Cumberland Plateau Salamander (Plethodon kentucki) in an old growth forest of southeastern Kentucky", Southeast Partners in Amphibian and Reptile Conservation Annual Meeting, February 2017
Southeastern Partners in Amphibian and Reptile Conservation Conference