This semester in my general biology course I learned about the general worldwide declines in amphibian populations, in particular in the populations of the Blue Poison Dart Frogs of northeastern South America. What is most threatening about the decline of these frogs is the fact that scientists are still not completely sure of what is causing their endangerment. Many believe that a mix of habitat loss, climate changes, and increased UV levels due to ozone depletion is to blame for the disappearance of these species. These factors probably make frogs more vulnerable to parasites, chytrid fungi, viruses, and deformities. And frogs are particularly sensitive to these environmental changes due to the fact that they have highly permeably skin & spend parts of their lives both on water and on land. Unfortunately, until scientists can completely understand the factors that contribute to population declines in frogs, not much can be done to save them.
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