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What controls where an animal lives |
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the ecological niche or broader habitat that a species has evolved and adapted into * put simply, where the species can best survive |
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the geographical distribution of animal species & populations on the earth's surface |
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effect on populations and species, and species assemblages * effect on increasing extinction rates (considered the main cause of extinction among plants and animals) |
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Introduced or exotic species |
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effect on local or native species EX: kudzu in southern US, mongoose in Hawaii, Argentine fire ant into US, rabbits into Australia |
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* one of the least diverse realms * EX: American bison, pronghorn antelope, Bald eagle, prairie dogs, Whooping crane, etc. |
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Europe, northern Asia(north of the Himalayas), & North Africa(north of the Sahara) * also area of low diversity * the Paleoarctic & Neoarctic sometimes combined as the Holarctic * EX: Siberian tiger, Giant panda |
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* South America, so of Central America * one of the richest & most varied faunal assemblages * EX: tapir, jaguar, llama, vicuna, macaws, numerous marsupials, boa constrictor, prehensile-tailed monkeys(Spider, Colobus, etc) |
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* Sub-Saharan Africa * also one of the richest & most varied faunal assemblages * EX: zebra, giraffe, hyena, ostrich, gorilla, chimpanzee, numerous antelope sp., etc |
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* Island of Madagascar and nearby Comoro islands * quite different from Africa, despite their proximity * EX: lemurs, elephant shrew |
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* South central and southeast Asia * fairly diverse fauna, but not quite as diverse as the Ethiopian * EX: orangutan, Bengal tiger, Indian elephant, mongoose |
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Australia, New Guinea & nearby islands * Australia has the highest diversity of marsupial mammals of any realm or region on Earth; all placental mammals(but a sp. of bat) brought in by humans * also the only known place where Monotreme mammals reside (Duck-billed platypus, Spiny echidnid) * kangaroo, wombat, Tasmanian devil, emu, koala, etc |
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sometimes included within the Australian realm, but has a rather unique fauna * no endemic or native mammals, only those brought in by humans * endemic sp. include the kiwi, & the tuatara |
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the islands of the Pacific not included in any other realm; Fuji, Hawaii, etc * each island group is often quite unique do to its isolation; EX: Hawaiian honeycreepers(birds), Galapagos finches |
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