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The fisher (Pekania pennanti) is a carnivorous mammal native to North America, a forest-dwelling creature whose range covers much of the boreal forest in Canada to the northern United States. It is a member of the mustelid family, and is the only living member of the genus Pekania. It is sometimes referred to as a fisher cat, although it is not ...
Map of early human migrations based on the Out of Africa theory; figures are in thousands of years ago (kya). [1]The peopling of the Americas began when Paleolithic hunter-gatherers (Paleo-Indians) entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the ...
Habitat conservation is the practice of protecting a habitat [47] in order to protect the species within it. [4] This is sometimes preferable to focusing on a single species especially if the species in question has very specific habitat requirements or lives in a habitat with many other endangered species.
North America, Central America, South America, Europe, Africa, Asia, Australia, Papua New Guinea: research, venom, pets Captive-bred Common in captivity, becoming rare in the wild 6c Other arthropods: Crested (Correlophus ciliatus) and suras geckos (C. sarasinorum) date uncertain New Caledonia: pets Captive-bred
The United States is part of North America. The environment of the United States comprises diverse biotas, climates, and geologies. This diversity leads to a number of different distinct regions and geographies in which human communities live. This includes a rich variety of species of animals, fungi, plants and other organisms.
The fisher was for many years placed in the genus Martes. A 2008 study using DNA sequences found the remaining species of Martes to be more closely related to the wolverine (genus Gulo) than to the fisher, rendering Martes paraphyletic. Therefore, the fisher was reclassified in the separate genus Pekania. [2]
Habitat degradation, fragmentation, and pollution are aspects of habitat destruction caused by humans that do not necessarily involve over destruction of habitat, yet result in habitat collapse. Desertification , deforestation , and coral reef degradation are specific types of habitat destruction for those areas ( deserts , forests , coral reefs ).
In human-dominated landscapes, weighing the habitat requirements of wild flora and fauna versus the needs of humans presents challenges. [52] Globally, human-induced environmental degradation is an increasing problem, which is why landscape-level approaches play an important role in ecosystem management. [53]