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Island Biogeography

2. Effect of isolation - isolated islands have fewer species than expected

  • Pacific islands show this dramatically

Island Biogeography

  • Species area relationship has high correlation coefficient (0.94)

but isolated islands too low

Island Biogeography

  • Distribution of seed plant genera in Pacific islands (#genera /

#endemic)

Hawaii

Line, Phoenix, Tokelau

Marquesas

Easter Is.

New Zealand

Island Biogeography

  • Easter Island is one of the most isolated - 22 seed

plant genera

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