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Lecture 22-Introduced Species

Lecture 22-Introduced Species - Introduced(Exotic Species...

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Introduced (Exotic) Species The #2 cause of extinction! Species brought from one location to another Can often out-compete natives 1
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Some Famous Introduced Species Sparrows Pigeons Norway rats Starlings Nile perch (2/3 species loss!) Rabbits (to Australia) Cats/dogs to islands Goats Brown tree snake on Guam 2
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Introduced Rabbits in Australia http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/A/AustralianRabbits.jpg 3
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Introduced Foxes in Australia http://www.zoo.org.au/conservation/imagedir/ebb_fox.jpg 4
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Goat overgrazing 5
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Nile Perch and Cichlids http://www.african-angler.co.uk/tim_nile_perch.jpg http://www.unil.ch/webdav/site/dee/shared/images/Cichlids_def.jpg 7
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Cichlids of Lake Malawi http://evolution.berkeley.edu/evosite/evo101/im ages/cichlids.gif 8
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Brown Tree Snake http://www.guamdawr.org/learningcenter/factsheets/herps/images/sweepsnakes.jpg 9
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Brown Tree Snake http://images.google.com/imgres? 10
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Lecture 22-Introduced Species - Introduced(Exotic Species...

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