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Influence of ground substrate on establishment of reindeer lichen after artificial dispersal

Roturier, Samuel and Bäcklund, Sofia and Sundén, Maria and Bergsten, Urban (2007). Influence of ground substrate on establishment of reindeer lichen after artificial dispersal. Silva Fennica. 41:2, 269-280
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Official URL: http://www.metla.fi/silvafennica/full/sf41/sf41226...

Abstract

Methods to improve the recovery of reindeer lichen after soil disturbance or overgrazing are being sought for areas where reindeer are herded. The effects of four substrates – mineral soil, moss, twigs and pine bark – on the establishment of lichen fragments after total removal of the vegetation were thus studied in a middle-aged pine stand and a clear-cut, both located in a lichen-rich pine-heath. Cladina mitis fragments of two sizes were manually dispersed in 1 m2 quadrats and their movements from their respective dispersal points were registered after one year. The natural re-establishment of lichens in the quadrats was monitored over three years by using digital pictures. In the forest stand, no significant differences were detected in either the fragment movement or the lichen establishment between the different substrates, but the fragment size had positive effects on both parameters. In the clear-cut, the moss substrate was the most suitable not only for the artificially dispersed lichens to fasten to, but also for the natural settlement of lichens from the surrounding lichen mat. More lichen thalli fastened to the bark and twigs substrates than to the mineral soil, but the settlement of lichens from the surrounding was greater on bare mineral soil substrate. The results indicate that artificial dispersal of lichen thalli on an appropriate substrate could be a successful strategy for promoting lichen recovery.

Authors/Creators:Roturier, Samuel and Bäcklund, Sofia and Sundén, Maria and Bergsten, Urban
Title:Influence of ground substrate on establishment of reindeer lichen after artificial dispersal
Series/Journal:Silva Fennica (0037-5330)
Year of publishing :2007
Volume:41
Number:2
Page range:269-280
Publisher:The Finnish Society of Forest Science, The Finnish Forest Research Institute
ISSN:0037-5330
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Other scientific
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Soil science > Soil biology
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:bark, Cladina mitis, image analysis, lichen colonization, mineral soil, moss, thallus, twigs
URN:NBN:urn:nbn:se:slu:epsilon-2-4
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-2-4
ID Code:3228
Department:(S) > Unit for Field-based Forest Research
(S) > Dept. of Forest Ecology and Management
Deposited By: Ulla Nylander
Deposited On:24 Jun 2008 00:00
Metadata Last Modified:12 Sep 2017 07:15

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