[LEPS-L:8022] Re: Extincted vs extirpated

Wed Nov 29 00:44:32 EST 2000

There are a couple of recent papers dealing with the decline of common
species in the UK. Very interesting and very alarming. Here are the
references:

León-Cortés, J. L., M. J. R. Cowley, and C. D. Thomas.  1999.  Detecting
decline in a formerly widespread species: how common is the common blue
butterfly Polyommatus icarus? Ecography 22:643-650.

León-Cortés, J. L., M. J. R. Cowley, and C. D. Thomas.  2000.  The
distribution and decline of a widespread butterfly Lycaena phlaeas in a
pastoral landscape. Ecol. Entomol. 25:285-294.

Cheers,
Niklas

________________________________________________________________________

   Niklas Wahlberg                          
   Metapopulation Research Group
   Department of Ecology and Systematics    
   Division of Population Biology           
   PO Box 17 (Arkadiankatu 7)               
   00014 University of Helsinki
   Finland                                                         
   p. +358-9-191 28778, fax +358-9-191 28701

 Check out our web-site:                    
  http://www.helsinki.fi/science/metapop/

 ------------------------------------------------------------ 

   For subscription and related information about LEPS-L visit:

   http://www.peabody.yale.edu/other/lepsl 