Dear All: I would like to do a comparative study of soil macroinvertebrates 
inside and outside a deer exclosure.  As I am interested in evaluating the 
available of shrew food as affected by heavy deer browsing, I would like to 
census the populations of snails, slugs, earthworms and insect larvae inside 
and outside the exclosure fence.  
        Are pitfall  traps the best technique for all these invertebrate 
groups?  If pitfalls are a good technique, should I put a layer of glycerol or 
some other preservative to preserve the animals in the bottom of the can in 
case I can't visit the traps more than once a week?  Thanks for your help.  
                                                                Dave Byman



David Byman
Asst. Prof. Biology
Penn State University
Worthington Scranton Campus
120 Ridge View Drive
Dunmore PA  18512-1699
570-963-2586
mailto:[EMAIL PROTECTED]

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