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Many of the causes of amphibian declines are well understood, and appear to affect other groups of organisms as well as amphibians. These causes include habitat modification and fragmentation, introduced predators or competitors, introduced species, pollution, pesticide use, or over-harvesting. However, many amphibian declines or extinctions ...
As of December 2021, the International Union for Conservation of Nature (IUCN) lists 673 critically endangered amphibian species, including 146 which are tagged as possibly extinct. [1] [2] 9.2% of all evaluated amphibian species are listed as critically endangered. No subpopulations of amphibians have been evaluated by the IUCN.
A number of causes are believed to be involved, including habitat destruction and modification, over-exploitation, pollution, introduced species, global warming, endocrine-disrupting pollutants, destruction of the ozone layer (ultraviolet radiation has shown to be especially damaging to the skin, eyes, and eggs of amphibians), and diseases like ...
Otherwise known as the giant ditch frog, the amphibian is one of the largest frogs in the world, weighing in at over 2 pounds (almost 1 kilogram) with a length of up to 8 inches.
Most amphibian species are also threatened by native habitat loss, [41] and some species are now only breeding in modified habitat. [42] Endemic organisms with limited ranges are most affected by habitat destruction, mainly because these organisms are not found anywhere else in the world, and thus have less chance of recovering.
Prehistoric amphibians of Africa (3 C, 2 P) A. Amphibians of Seychelles (9 P) M. Amphibians of Mauritius (3 P) N. Amphibians of North Africa (14 P) S.
Common name Scientific name Range Comments Pictures North African elephant: Loxodonta africana pharaoensis: North Africa: Neolithic rock art indicates that the African bush elephant inhabited much of the Sahara desert and North Africa at the beginning of the Holocene, and Ancient authors wrote that it was present in the Atlas Mountains, the Red Sea coast, and Nubia until the first few ...
A recently described second species, B. salamandrivorans, also causes chytridiomycosis and death in salamanders. The fungal pathogens that cause the disease chytridiomycosis are known to damage the skin of frogs, toads, and other amphibians, disrupting their balance of water and salt and eventually causing heart failure, Nature reports. [4]