the United States Geological Survey

“ Amphibians, unlike people, breathe at least partly through their skin, which is constantly exposed to everything in their environment. Consequently, their bodies are much more sensitive to environmental factors such as disease, pollution, toxic chemicals, ultraviolet radiation, and habitat destruction. The worldwide occurrences of amphibian declines and deformities could be an early warning that some of our ecosystems, even seemingly pristine ones, are seriously out of balance. ”

“ Human influence from the Mississippi River east, including the metropolitan areas of the Northeast and the agricultural-dominated landscapes of the Midwest Disease, particularly a chytrid fungus in the Upper Midwest and New England Pesticide applications east of the Colorado River Climate changes across the Southern U.S. and the West Coast Amphibian declines are a global phenomenon that has continued unabated in the United States since at least the 1960's. Declines are occurring even in protected national parks and refuges. ”

“ The average decline in overall amphibian populations is 3.79 percent per year, though the decline rate is more severe in some regions of the U.S., such as the West Coast and the Rocky Mountains. If this rate remains unchanged, some species will disappear from half of the habitats they occupy in about 20 years. ”