Spesies terancam: Perbezaan antara semakan
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Semakan pada 08:12, 16 September 2009
Spesies terancam is a population of organisms which is at risk of becoming extinct because it is either few in numbers, or threatened by changing environmental or predation parameters. An endangered species is usually a taxonomic species, but may be another evolutionary significant unit. The International Union for Conservation of Nature (IUCN) has calculated the percentage of endangered species as 40 percent of all organisms based on the sample of species that have been evaluated through 2006.[2] (Note: the IUCN groups all threatened species for their summary purposes.) Many nations have laws offering protection to conservation reliant species: for example, forbidding hunting, restricting land development or creating preserves. Only a few of the many species at risk of extinction actually make it to the lists and obtain legal protection. Many more species become extinct, or potentially will become extinct, without gaining public notice.
Galeri
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The endangered Island Fox
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The endangered Sea Otter
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American Bison skull heap. There were as few as 750 bison in 1890 from economic-driven overhunting.
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Immature California Condor
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Santa Cruz Long-toed Salamander (photo courtesy of Don Roberson)
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Iberian Lynx, Europe's most endangered mammal
Lihat juga
Nota
- ^ Project harimau Sundarban. Maklumat tentan kepupusan harimau boleh didpati dalam bahagian laman yang berkenaan dengan harimau.
- ^ IUCN Red-list statistics (2006)
- Glenn, C. R. 2006. "Earth's Endangered Creatures", Accessed 9/30/2008
- Ishwaran, N., & Erdelen, W. (2005, May). Biodiversity Futures, Frontiers in Ecology and the Environment, 3(4), 179. Retrieved September 23, 2008
- Kotiaho, J. S., Kaitala, V., Komonen, A., Päivinen, J. P., & Ehrlich, P. R. (2005, February 8). Predicting the Risk of Extinction from Shared Ecological Characteristics, proceedings of the National Academy of Sciences of the United States of America, 102(6), 1963-1967. Retrieved September 24, 2008
- Minteer, B. A., & Collins, J. P. (2005, August). Why we need an “Ecological Ethics”.
Frontiers in Ecology and the Environment, 3(6), 332-337. Retrieved September 22, 2008
- Raloff, J. (2006, August 5). Preserving Paradise, Science News, 170(6), 92. Retrieved September 22, 2008,
- Wilcove, D. S., & Master L. L. (2008, October). How Many Endangered Species are there in the United States? Frontiers in Ecology and the Environment, 3(8), 414-420. Retrieved September 22, 2008.
Lihat juga
- Endangered Species Coalition (ESC)
- Enviro-babies (cartoon characters)
- Game Warden
- North American Game Warden Museum
Pautan luar
- Endangered Species from UCB Libraries GovPubs
- Endangered Species & Wetlands Report Independent print and online newsletter covering the ESA, wetlands and regulatory takings.
- Everything you wanted to know about endangered species — Provided by New Scientist.
- Endangered species charted by number of species and risk of extinction.
- The Whale Game The Whale Game from Environmental Education Games
- IUCN The Official IUCN Website (The Organization That Classifies Animals' Population Status)