Island natural selection

Discussion of the distribution and abundance of living organisms and how these properties are affected by interactions between the organisms and their environment

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casual_ecstasy
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Island natural selection

Post by casual_ecstasy » Mon Nov 19, 2007 11:06 pm

Hi! I'm doing A level Biology, really interested in selection and evolution, but I'm having problems with this question:

"It is frequently found that individuals within populations of small mammals, such as mice or voles, which live on islands are larger than those living on mainland; while those of large mammals, such as elephants and bears, tend to be smaller than those on the mainland. Suggest reasons for this."

Any ideas?

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mith
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Post by mith » Mon Nov 19, 2007 11:46 pm

predation
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

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h2so4hurts
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Post by h2so4hurts » Tue Nov 20, 2007 7:04 pm

I posted a story about this a few weeks ago from science daily.
http://www.labspaces.net/view_link.php?newsID=547
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