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Conservation of saproxylic species

an evaluation of set-asides and substrates in boreal forests

Djupström, Line (2010). Conservation of saproxylic species. Diss. (sammanfattning/summary) SLU Service/Repro, Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2010:80
ISBN 978-91-576-7525-5
[Doctoral thesis]

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Abstract

Forest management has altered the prerequisite of many species in forest landscapes. The new, more conservation-oriented forest management includes a range of different strategies that aim to prevent losses of biodiversity. Evaluating these strategies is essential in order to identify where they might fall short of their aims and to identify where to make any necessary improvements. In this thesis the importance of different conservation strategies is evaluated in terms of what they might contribute to the conservation of beetles dependent on deadwood. Furthermore, patterns of biodiversity and mechanisms that affect biodiversity are explored. In one study, species richness, composition and substrate characteristics were compared in three conservation strategies: nature reserves, woodland key-habitats and retention patches; and old managed forests that had not been set-aside. In a second study, high-cut stumps and other retained dead wood in clear-cuts were evaluated for their importance in the recruitment of the red-listed beetle Peltis grossa at the landscape level. A third study explored species richness co-variation, surrogate capacity and beta-diversity among bryophytes, lichens, saproxylic beetles and dead wood. A fourth study examined the priority effects among beetles and fungi colonizing high stumps in clear-cuts over a period of 15 years. Overall, woodland key-habitats were found to have a high conservation value in terms of species richness, richness of red-listed species, and diversity of dead wood. Reserves had the highest dead wood diversity; old managed forests had a relatively high number of red-listed species; and retention patches deviated in species composition. Leaving sun-exposed, coarse wood, which eventually develops into brown-rotten wood due to the fungi Fomitopsis pinicola, in a late stage of decay appeared to be a particularly efficient conservation strategy for P. grossa. The third study showed that the richness of red-listed lichens and bryophytes can be used to indicate each other's presence, and dead wood diversity appeared to be an efficient surrogate for beetles and bryophytes. A study of priority effects revealed that two early-colonizing species, Hylurgops palliatus and F. pinicola, positively affected the later colonizing species, P. grossa, whereas Monochamus sutor had a negative effect.

Authors/Creators:Djupström, Line
Title:Conservation of saproxylic species
Subtitle:an evaluation of set-asides and substrates in boreal forests
Year of publishing :2010
Volume:2010:80
Number of Pages:51
Papers/manuscripts:
NumberReferences
ALLI. Djupström B.L, Weslien, J. & Schroeder L.M. (2008). Dead wood and saproxylic beetles in set-aside and non set-aside forests in a boreal region. Forest Ecology and Management 255:3340-3350. II. Djupström B.L, Perhans K., Weslien, J., Schroeder, L.M., Gustafsson L. & Wikberg, S. (2010). Co-variation of lichens, bryophytes, saproxylic beetles and dead wood in Swedish boreal forests. Systematics and Biodiversity 8(2):247-256. III. Weslien J., Djupström B.L., Schroeder, L.M. & Widenfalk O. Long term priority effects among insects and fungi colonizing decaying wood. (Under review). IV. Djupström B.L, Weslien, J., Schroeder L.M. & ten Hoopen, J. Recruitment of the red-listed saproxylic beetle Peltis grossa -importance of retained dead wood on clear-cuts. (Manuscript).
Place of Publication:SLU Service/Repro, Uppsala
ISBN for printed version:978-91-576-7525-5
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:boreal forests, deadwood, coleoptera, lichenes, bryophyta, fungi, habitats, biodiversity, endangered species, forest management, nature conservation, environmental policies, sweden
Keywords:Beta-diversity, boreal forests, dead wood, community assemblage, conservation, saproxylic beetles, species diversity, surrogate capacity, priority effects
URN:NBN:urn:nbn:se:slu:epsilon-3111
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-3111
ID Code:2389
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: Line Djupström
Deposited On:01 Nov 2010 00:00
Metadata Last Modified:02 Dec 2014 10:18

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