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Spatial pattern of occurrence of eleven epiphytic lichen species in a heterogeneous landscape
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
Abstract [en]

Oaks (Quercus robur) are an important substrate for many epiphytic lichens, and with increasing age the bark of oaks becomes suitable for red-listed species. These species may respond to environmental and landscape factors differently, and at different spatial scales. We tested the effect of tree, environmental and land use factors on the occurrence and richness patterns of lichens species at various spatial scales (circles with radius ranging from 28 to 1225 m), in a heterogeneous landscape in South Eastern Sweden. The occurrence patterns of Cliostomum corrugatum and Chaenotheca phaeocephala were best explained by the density of oaks within radii of 400 and 302 m, respectively. In contrast, Ramalina baltica was best explained at smaller scale (263 m) as was species richness (302 m). This study shows that the most important factor for the occurrence and richness patterns of lichens was oak density at almost all the considered scales. Tree circumference also positively affected all four response variables.

Place, publisher, year, edition, pages
2011. , 19 p.
Keyword [en]
Key words: old oaks, spatial scales, spatial pattern, red-listed lichens, oak density, species occurrence, richness
National Category
Natural Sciences
URN: urn:nbn:se:liu:diva-74562ISRN: LiTH-IFM- Ex--11/2441--SEOAI: diva2:488061
Subject / course
Agriculture, Veterinary Medicine, Forestry
Available from: 2012-02-06 Created: 2012-02-01 Last updated: 2012-02-06Bibliographically approved

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Department of Physics, Chemistry and BiologyThe Institute of Technology
Natural Sciences

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ReferencesLink to record
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