liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
Estimating the dispersal capacity of the rare lichen Cliostomum corrugatum
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.
Department of Biology, University of Bergen, P.O. Box 7800, NO-5020 Bergen, Norway.
School of Life Sciences, Södertörn University College, SE-181 49 Huddinge, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Ecology . Linköping University, The Institute of Technology.ORCID iD: 0000-0001-6128-1051
Show others and affiliations
2009 (English)In: Biological Conservation, ISSN 0006-3207, E-ISSN 1873-2917, Vol. 142, no 8, 1870-1878 p.Article, review/survey (Refereed) Published
Abstract [en]

The objective of this study was to estimate the dispersal rate in an organism assumed to be confined to tree stands with unbroken continuity. We used the lichen-forming ascomycete Cliostomum corrugatum, which is largely confined to old oak stands. Five populations, with pairwise distances ranging from 6.5 to 83 km, were sampled in Ostergotland, south-eastern Sweden. DNA sequence data from an intron in the small subunit nuclear ribosomal RNA gene was obtained from 85 samples. Nearly all molecular variance (99.6%) was found within populations and there were no signs of isolation-by-distance. The absolute number of immigrants per population per generation (estimated to 30 years), inferred by Bayesian MCMC, was found to be between 1 and 5. Altogether, evidence suggests abundant gene flow in the history of our sample. A simulation procedure demonstrated that we cannot know whether effective dispersal is ongoing or if it ceased at the time when oaks started to decrease dramatically around 400 years BP. However, a scenario where effective dispersal ceased already at the time when the postglacial reinvasion of oak had reached the region around 6000 years BP is unlikely. Vegetation history suggests that the habitat of C. corrugatum was patchily distributed in the landscape since the early Holocene. Combined with the high dispersal rate estimate, this suggests that the species has been successful at frequently crossing distances of at least several kilometres and possibly that it has primarily been limited by the availability of habitat rather than by dispersal.

Place, publisher, year, edition, pages
2009. Vol. 142, no 8, 1870-1878 p.
Keyword [en]
Dispersal; Establishment; Ecological continuity; Old-growth forests; Quercus; Ascomycete
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-20234DOI: 10.1016/j.biocon.2009.03.026OAI: diva2:234022
Original Publication: Hakan Lattman, Louise Lindblom, Jan-Eric Mattsson, Per Milberg, Morten Skage and Stefan Ekman, Estimating the dispersal capacity of the rare lichen Cliostomum corrugatum, 2009, BIOLOGICAL CONSERVATION, (142), 8, 1870-1878. Copyright: Elsevier Science B.V., Amsterdam. Available from: 2009-09-04 Created: 2009-08-31 Last updated: 2014-10-08
In thesis
1. Studies on spatial and temporal distributions of epiphytic lichens
Open this publication in new window or tab >>Studies on spatial and temporal distributions of epiphytic lichens
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Lichens are an important group of organisms in terms of environmental issues, conservation biology and biodiversity, principally due to their sensitivity to changes in their environment. Therefore it is important that we develop our understanding of the factors that affect lichen distribution. In this thesis, both spatial and temporal distributions of epiphytic lichens at different scales have been studied in southern Sweden.

Generation time of the red-listed lichen Cliostomum corrugatum was examined using Bjärka-Säby as the study site. The results showed that the average age of an individual of C. corrugatum is 25–30 years at the onset of spore production.

The rarity of C. corrugatum was also examined. DNA analysis of an intron from 85 samples, collected at five sites in Östergötland, yielded 11 haplotypes. Results from coalescent analysis, mantel test and AMOVA indicated that C. corrugatum have a high ability to disperse. The study concluded that its rarity is most likely connected with the low amount of available habitat, old Quercus robur.

The changes in the distribution of epiphytic lichens in southern Sweden, between 1986 and 2003, were also compared. For each year a centroid was calculated on all combinations of tree and lichen species. The three significant cases showed that the centroid movement pointed toward a north-east or north-north-east direction.

Finally differences in species richness and cover of lichens on large Q. robur were examined between urban and rural environment. The results demonstrated that species number and percent cover was significantly higher on oaks standing rural compared to oaks standing urban. Effects of urban sprawl showed a decline in species richness and cover with increasing age of the surrounding buildings.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2012. 42 p.
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1471
, Södertörn Doctoral Dissertation, ISSN 1652–7399 ; 72
National Category
Natural Sciences
urn:nbn:se:liu:diva-81433 (URN)978–91–7519–810–1 (ISBN)
Public defence
2012-10-22, Plank, Fysikhuset, Campus Valla, Linköpings universitet, Linköping, 10:00 (Swedish)

In the electronic version of this dissertation the Södertörn series Södertörn Doctoral Dissertation 72, ISSN 1652–7399, has been removed.

Available from: 2012-09-14 Created: 2012-09-14 Last updated: 2012-10-01Bibliographically approved

Open Access in DiVA

fulltext(446 kB)606 downloads
File information
File name FULLTEXT01.pdfFile size 446 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Lattman, HakanMilberg, Per
By organisation
Ecology The Institute of Technology
In the same journal
Biological Conservation
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 606 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 107 hits
ReferencesLink to record
Permanent link

Direct link