How much has the amphibian population decreased?

3

Answers


  1. 0 Votes

    The population of amphibians are decreasing. About one-third of the more than 6,800 species of amphibians are threatened with extinction. The population crash is more devastating than that compared to birds, mammals and reptiles. The decline of amphibian population is occuring all around the world.

    Amphibians are being threatened and dying off due to habitat loss, disease, fungal pathogen, climate change, collection by humans, and by the thinned ozone layer in our atmosphere. This tremendous loss ocurred within 30 years and believe it or not they are important and contribute to the prevention of depletion of fossil fuel.

    Researchers have created a artificial photosynthesis system from the protein in the foam nest of the tungara frog. This new system can produce up to ten times more biofuel per hectare than plant based systems.

  2. 0 Votes

    This is really difficult to answer. We do not have accurate historic counts for some species. Some species are expanding, most are declining.

    Example, the Cascades From (Rana cascadae) in the Lassen area is virtually extinct. Only six known populations left, only two of which show decent reproduction. 99% range reduction in the Lassen area.

    The same species in the Trinity Alps has seen 50% range reduction but has actually seen increases the last decade or so as fish were removed from some lakes.

    Globally amphibians are clearly in trouble in a generic sense but you really have to look at the geographic location and the species to get a meaningful answer.

  3. 0 Votes

    well i don’t know why don’t you just keep on searching for the answer.

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