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Bryophytes, lichens and dead wood in young managed boreal forests

Rudolphi, Jörgen (2007). Bryophytes, lichens and dead wood in young managed boreal forests. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2007:88
ISBN 978-91-576-7387-9
[Doctoral thesis]

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Abstract

The decrease in old-growth forests threatens the diversity of a range of organisms. Only a small portion of the forested area in Sweden is formally protected and the majority of unprotected forests are young (<70 years). The objective of this thesis is to provide a deeper understanding of the production forest landscape, with special focus on young forests and to increase the knowledge about man-made substrates. Moreover, this thesis investigates the long-term survival chances of forest bryophytes and lichens, and gives insight into the dispersal biology of bryophytes. After clear-cutting, the remaining dead wood consists of logging residues (slash), logs, snags and man-made high and low stumps. Results from this thesis show that the effect on dead wood supply of harvesting slash for biofuel is most significant for slash and logs. Sixty-five percent of the lying dead wood volume left after clear-cutting was piled for extraction. In addition, 36 % of the remaining dead wood was removed, including a significant volume of coarse dead wood. On stumps in different age classes, bryophytes showed a tendency to increase in richness over time, whereas lichens colonized stands in early succession more rapidly and had an earlier peak in species richness. As a dispersal mechanism for bryophytes living on stumps, ants inhabiting the same substrates were shown to passively carry bryophyte diaspores for a significant period of time. This result sheds light on the complexity of species dispersal. In adjoining young and old forest stands, red-listed bryophytes and lichens were more abundant in the old stands. This difference disappeared when the amount of substrate available was taken into account. When the young stands were positioned north of the old, the bryophytes were equally frequent in both forest stages, indicating that the aspect of a clearcut matters. In conclusion, young forests have the potential to host a high diversity of species. Research on young natural and managed forests is needed to formulate science-based conservation strategies in managed forest landscapes.

Authors/Creators:Rudolphi, Jörgen
Title:Bryophytes, lichens and dead wood in young managed boreal forests
Year of publishing :2007
Volume:2007:88
Number of Pages:32
Papers/manuscripts:
NumberReferences
ALLI. Rudolphi J. & Gustafsson L. 2005. Effects of forest-fuel harvesting on the amount of dead wood on clear-cuts. Scandinavian Journal of Forest Research 20, 235-242. II. Caruso A. & Rudolphi J. Influence of stand successional stage and substrate variability on diversity of lichens and bryophytes growing on stumps. Manuscript. III. Rudolphi J. Ant-mediated dispersal of asexual moss propagules. Submitted manuscript. IV. Rudolphi J., Gustafsson L. & Berglund T. Old-growth forest bryophytes and lichens in young boreal production forests. Manuscript.
Place of Publication:Uppsala
ISBN for printed version:978-91-576-7387-9
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:boreal forests, bryophyta, lichenes, deadwood, ecological succession, biodiversity, endangered species, slash, stumps, forest management, sweden
Keywords:boreal forests, bryophytes, dead wood, dispersal, diversity, lichens, recovery, slash, succession, young forests
URN:NBN:urn:nbn:se:slu:epsilon-1785
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-1785
ID Code:1546
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: Jörgen Rudolphi
Deposited On:13 Sep 2007 00:00
Metadata Last Modified:02 Dec 2014 10:12

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