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Low host-tree preferences among saproxylic beetles: acomparison of four deciduous species
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology. (Conservation Ecology Group)ORCID iD: 0000-0001-6128-1051
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology. (Conservation Ecology Group)
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology. (Conservation Ecology Group)
Linköping University, Department of Physics, Chemistry and Biology, Biology. Linköping University, The Institute of Technology. County Administration Board of Östergötland, Linköping, Sweden. (Conservation Ecology Group)
2014 (English)In: Insect Conservation and Diversity, ISSN 1752-458X, E-ISSN 1752-4598, Vol. 7, no 6, 508-522 p.Article in journal (Refereed) Published
Abstract [en]
  • Many wood-dwelling beetles rely on old hollow trees. In Europe, oaks are known to harbour a species-rich saproxylic beetle fauna, while less is known regarding other broad-leaved tree species. Furthermore, the extent to which saproxylic insect species have specialised on different tree species remains unknown.
  • In this study, we sampled beetles through pitfall traps and window traps in four different tree species in a landscape with many old oaks.
  • We recorded 242 saproxylic beetle species of which 27 were red-listed. After eliminating the species recorded only on a single tree, few cases among the 171 remaining species in the data set were confined to a single tree species.
  • Using odds ratios, we showed that 19 of the 171 beetle species showed significant associations with Quercus robur in at least one of the two trap types. For Acer platanoides, Fraxinus excelsior and Tilia cordata, the corresponding numbers were 6, 2 and 5, respectively. One species showed a negative association with Q. robur.
  • Using meta-analysis, we quantified the degree of association between the beetle species and the tree species. The associations were most profound among species classified as obligate saproxylic rather than facultative in lifestyle. Overall, a significant association was only found with Q. robur.
  • We conclude that the saproxylic fauna is dominated by non-specialist species but includes a small proportion of truly host-tree-specific species. Furthermore, other broad-leaved trees can be important as supporting habitats for many saproxylic organisms that have had presumed associations with oaks to date.
Place, publisher, year, edition, pages
Wiley-Blackwell, 2014. Vol. 7, no 6, 508-522 p.
Keyword [en]
Beetle, broad-leaved tree, coleoptera, conservation, hollow, preference, saproxylic.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:liu:diva-111927DOI: 10.1111/icad.12074ISI: 000344017100003OAI: oai:DiVA.org:liu-111927DiVA: diva2:762010
Available from: 2014-11-10 Created: 2014-11-10 Last updated: 2017-12-05Bibliographically approved

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Milberg, PerBergman, Karl-OlofJansson, Nicklas

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