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Edge Effects on the Epiphytic Lichen Flora of Picea Abies in Middle Boreal Finland

Published online by Cambridge University Press:  28 March 2007

Laura Kivistö  and
Mikko Kuusinen
Laura Kivistö
Affiliation:
Department of Ecology and Systematics, P.O. Box 47, FIN-00014University of Helsinki, Finland
Mikko Kuusinen
Affiliation:
Department of Ecology and Systematics, P.O. Box 47, FIN-00014University of Helsinki, Finland
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Abstract

The edge effect of large clear-cuts on the epiphytic lichen flora of Picea abies in old-growth forest fragments was studied at three south-exposed and four north-exposed forest clear-cut edges in middle boreal Finland. The sampling of the species cover on trunk bases was carried out along four transects parallel to the forest margin: (1) at the forest margin, (2) 10 m from the margin, (3) 20 m from the margin and (4) 50 m from the margin. In addition, control trees were sampled > 100 m from nearest edge. Our results showed that the epiphytic lichen species diversity was lower at the forest margin than in the forest interior for sunny south-facing edges, while the species diversity in north-exposed edges was independent of the distance from the forest margin. The cover of a common and abundant lichen species, Parmeliopsis ambigua, was slightly higher at the forest edge and decreased inside the forest for both south-exposed and north-exposed edges.

Type
Research Article
Information
The Lichenologist , Volume 32 , Issue 4 , July 2000 , pp. 387 - 398
Copyright
Copyright © British Lichen Society 2000

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