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Influence of tree hollow characteristics on saproxylic beetle diversity in a managed forest

Title data

Schauer, Bastian ; Steinbauer, Manuel ; Vailshery, Lionel Sujay ; Müller, Jörg ; Feldhaar, Heike ; Obermaier, Elisabeth:
Influence of tree hollow characteristics on saproxylic beetle diversity in a managed forest.
In: Biodiversity and Conservation. Vol. 27 (2018) Issue 4 . - pp. 853-869.
ISSN 1572-9710
DOI: https://doi.org/10.1007/s10531-017-1467-9

Project information

Project financing: Deutscher Akademischer Austauschdienst
Bayerische Forstverwaltung
Danish Carlsbergfondet

Abstract in another language

Tree hollows are key structures in forest ecosystems constituting long-lasting habitats and nutritional resources for many saproxylic arthropod species. Due to diverse microhabitat structures and conditions in tree hollows, they can support a broad range of species. However, in the past intensive management practices in parts of Europe reduced the abundance of tree hollows, resulting in a decrease and endangerment of species specialised in this tree habitat. We investigated 40 beech trees with hollows in 2014 and a subset of 23 of these trees in 2015 in a managed forest landscape in Germany. Using emergence traps we collected 89 beetle species of which 33% were on the Bavarian Red List. We described the tree characteristics, physical hollow characteristics, and their surrounding environment investigating their influence on alpha-diversity of non-Red List and Red List species. Furthermore, we investigated spatial (between tree hollows) and temporal (same tree hollow but different years) beta-diversity, considering the importance of turnover and nestedness components on beta-diversity. alpha-Diversity decreased with increasing decomposition of wood mould and increased with increasing area of hollow entrance in both years. Additional characteristics differed between years and between non-Red List and Red List species. beta-Diversity was related to diameter at breast height, number of surrounding tree hollows, area of hollow entrance and a temperature gradient. We found a higher species turnover than nestedness between tree hollows and between years, indicating highly dynamic beetle communities spatially as well as temporally. To support and maintain the diversity of saproxylic beetles inhabiting tree hollows, the heterogeneity of microhabitats is important and should be supported by maintaining the diversity of differently structured and sized tree hollows.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER144568
ISI:000425295800004
Keywords: Coleoptera; Conservation; Dead wood; Keystone structure; Threatened species; Wood mould
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Animal Ecology I
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Animal Population Ecology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Animal Population Ecology > Professorship Animal Population Ecology - Univ.-Prof. Dr. Heike Feldhaar
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Service Facilities
Service Facilities > Ökologisch-Botanischer Garten
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
500 Science > 590 Animals (Zoology)
Date Deposited: 19 Mar 2018 07:22
Last Modified: 03 Sep 2019 09:48
URI: https://eref.uni-bayreuth.de/id/eprint/42895