Indicator plants

Roger Whitehead rwhitehead at cix.compulink.co.uk
Wed Apr 17 03:32:05 EST 1996


<< Lichens are indicators of air pollution. >>

Or, rather, the absence of them is.   8-)

Nettles are usually an indicator of animal habitation, human or 
otherwise, since they like nitrogen-rich soil.

Have you thought of doing a search for "indicator species" or similar on 
something like altavista (http://www.altavista.digital.com)?

Roger

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Roger Whitehead,
14 Amy Road, Oxted, Surrey RH8 0PX, England
Tel: +44 (0)1883 713074; Fax: +44 (0)1883 716793
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