Urban Ecology

[Joel]

The September-October 2000 issue of American Scientist
(Sigma XI, The Scientific Research Society) features an
article called A New Urban Ecology (modeling human
communities as integral parts of ecosystems poses special
problems for the development and testing of ecological
theory).  Included is a chart that shows examples of
species whose evolution has been influenced by selection
pressures created by human activity - often over periods
as short as 1 to 30 years.  Recent studies have shown
that fruit flies and egg laying butterflies have rapidly
adapted to prefer new human introduced host plants.
The article sites checkerspots as an example.  I'd like
to see more information regarding this phenomenom.
Thanks in advance for your help.
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