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Posted Mon Jun 23 2008: from Queen:
Life on the edge: To disperse, or become extinct? http://apocadocs.com/s.pl?1214242514
"Predicting the speed at which plants are likely to migrate during climate warming could be key to ensuring their survival," says Queen's Biology professor Christopher Eckert. Populations of plants growing at the outer edges of their natural "geographic range" exist in a precarious balance between extinction of existing populations and founding of new populations, via seed dispersal into vacant but suitable habitat. "Policy makers concerned with preserving plant species should focus not only on conserving land where species are now, but also where they may be found in the future," says Dr. Eckert.
[Read more stories about: migration changes, ecosystem interrelationships]

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