This year we plan to sample coleopterans withing home ranges of breeding Lesser Grey Shrikes. The species feed on ground-dwelling beetles. We would like to use non-lethal methods to sample them. I would deeply appreciate advice on suitable techniques or any articles on this subject. Thank you very much! Katarina
Katarina:
To sample ground-dwelling coleoptera you can use Winkler’s bags without alcohol in the collection container. Also you can use pitfall traps without alcohol.
Dear Luis,
thank you very much for the answer - it will be very useful to us!
Kind regards,
Katarina
You can use soil / litter sifting method (collecting soil sample and sifting it using sifts of various cell diameter).
You could use pitfall traps with soil, gravel or similar instead of preservative. That gives the beetles something to hide in. You would of course have to empty the traps more often. So for example leave overnight and check the next day.
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