Amphibian Research Amphibian Research BRD is closely tracking developments in the malformation and decline of amphibian populations in North America and elsewhere. Since the summer of 1995 when Minnesota middle school students discovered large numbers of deformed frogs while on a field trip, BRD scientists have been searching for possible causes. Finding the cause is critical, since it may have significant ecosystem implications. Species that have been reported with malformations include northern leopard frogs, wood frogs, bullfrogs, green frogs, mink frogs, gray treefrogs, Pacific treefrogs, spring peepers, American toads, long-toed salamanders, tiger salamanders, and spotted salamanders.
Recent reports show that many amphibian populations are undergoing decline and even extinction.
While habitat destruction is major reason for decline there may be additional factors such as chemical pollution, increased UV-B radiation, parasites and predation. Amphibians are an essential part of many ecosystems and may even constitute the highest percentage of vertebrate biomass. Thus decline in amphibian populations could have important impacts on ecosystem health. The links below are provided to assist you in staying abreast of scientific activities and research concerning the plight of amphibian populations.