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Re: National Wildlife articles

> Has anyone read the April/May '97 issue of National Wildlife?  I highly
> recommend it.  On pg. 8 there is an alarming article entitled "Pollution's
> Hidden Toll on Native Plants".  It's a short synopsis of a 12-year study
> done on the effect of nitrogen on native grasses.  Apparently elevated
> nitrogen levels from air pollution actually stimulate the growth of
> grasses imported from Europe, while impairing the growth of native
> grasses.  "Once nitrogen increases in the soil, as when motor-vehicle
> pollution settles to the ground, nonnative plants take over.  Subsequent
> changes in the soil also increase nitrogen pollution in water supplies.
> In addition, species diversity in affected areas declines."

Lynelle,

Thanks so much for finding this!  The National Wildlife Foundation has back
issues of their magazine online as well:

   http://www.nwf.org/nwf/lib/nw/

Links that specifically refer to prairie articles, etc:

   http://www.nwf.org/nwf/lib/nw/beauty.htm (general endangered species)
   http://www.nwf.org/nwf/lib/nw/pdogs.html (prairie dogs and their role)

I've asked when the April/May issue will be available online; I'll let
the list know when I get response.

Chris
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