A comparison of three methods to survey saproxylic beetles in hollow oaks

One of the most endangered assemblages of species in Europe is insectsassociated with old trees. For that reason there is a need of developing methodsto survey this fauna. This study aims at comparing three methods - windowtrapping, pitfall trapping and wood mould sampling - to assess speciesrichnes...

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Bibliographic Details
Published in:Biodiversity and conservation 2002-01, Vol.11 (10), p.1759-1771
Main Authors: Ranius, Thomas, Jansson, Nicklas
Format: Article
Language:English
Subjects:
Endangered species
Fauna
Indicator species
Methods
NATURAL SCIENCES
NATURVETENSKAP
Pitfall traps
Saproxylic beetles
Trapping
Trapping efficiency
Tree hollows
Window traps
Wood
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Summary:One of the most endangered assemblages of species in Europe is insectsassociated with old trees. For that reason there is a need of developing methodsto survey this fauna. This study aims at comparing three methods - windowtrapping, pitfall trapping and wood mould sampling - to assess speciesrichness and composition of the saproxylic beetle fauna in living, hollow oaks.We have used these methods at the same site, and to a large extent in the sametrees. Useful information was obtained from all methods, but they partiallytarget different assemblages of species. Window trapping collected the highestnumber of species. Pitfall trapping collected beetles associated with treehollows which rarely are collected by window traps and therefore it isprofitable to combine these two methods. As wood mould sampling is the cheapestmethod to use, indicator species should preferably be chosen among specieswhich are efficiently collected with this method.[PUBLICATION ABSTRACT]
ISSN:0960-3115
1572-9710
1572-9710
DOI:10.1023/A:1020343030085