Losses of Temporary Wetlands Equally Important . Grading, mosquito control, and human tidiness have eliminated many of these environments. Losses from these environments may be even more severe than those from permanent pools. Wetland and Upland Quality of Life . While disappearances of wetlands are clearly a problem, declines in wetland quality through eutrophication, pollution, scouring, adding fish, and loss of surrounding forests and meadows can just as readily eliminate amphibian populations.
Terrestrial salamanders are obligate forest dwellers.
In general, the older the forest the more terrestrial salamanders present. Acid Rain and Soil Lethal Range . Water and soil pHs below level 4 to 5 can be lethal for amphibian embryos and tadpoles. Field Evidence . Low pH has been shown to affect the distribution of terrestrial and aquatic amphibians.