Why Species Become Threatened or Endangered: A Mammalogist’s Perspective
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A study of threatened species of ferns in Gilan province (N Iran) providing a comparison of protective classification of conservation based on IUCN's factors
During an investigation on pteridophytes (ferns) of Guilan province (N Iran), 402 specimens were studied. Of these, 44 species, under 21 genera, belonging to 13 families, were identified. Based on the approved instruction given by the "International Union for the Conservation of Nature and Natural Resources (IUCN)", after performing the filtering stage, 17 species were identified as endangered...
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Sustaining viable populations of all wildlife species requires the maintenance of habitat, as well as an understanding of the behaviour and physiology of individual species. Despite substantial efforts, there are thousands of species threatened by extinction, often because of complex factors related to politics, social and environmental conditions and economic needs. When species become critica...
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تاریخ انتشار 1999