Journal
BIOLOGICAL CONSERVATION
Volume 107, Issue 2, Pages 165-180Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0006-3207(02)00057-5
Keywords
lichens; mosses; liverworts; conservation; biodiversity; conifer plantations; deadwood
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Lichen and bryophyte communities of spruce and pine plantations in different parts of Britain were surveyed and compared to those of semi-natural pine and oak woodlands. In total, 202 lichen species and 111 bryophytes were recorded. Community composition and species-richness were related to measures of climate, stand structure and deadwood (snags, logs and stumps). Plantations had a less species-rich lichen flora than semi-natural stands related to reduced light availability and lack of old trees. Bryophyte species-richness was similar in plantations and semi-natural stands, and was positively correlated with large diameter (>20 cm), well-decayed logs and stumps. Lichens species-richness was higher on decorticate snags (especially in semi-natural Scots pine stands in the Scottish Highlands). Early successional stands were often the richest for lichens, Stumps being important for Calicium and Cladonia species. Three strategies are Suggested for enhancing lower plant diversity in planted forests: (1) extending felling rotations (2) introducing alternative silvicultural systems to clear-felling (e.g. single-tree selection) to foster continuity of woodland conditions and increase deadwood volumes; (3) modifying restocking practices on clear-fells to avoid excessive shading of deadwood. Crown Copyright (C) 2002 Published by Elsevier Science Ltd. All rights reserved.
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