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Colonization dynamics of the clonal moss Hylocomium splendens on islands in a Baltic land uplift area: reproduction, genet distribution and genetic variation

Cronberg, Nils LU (2002) In Journal of Ecology 90(6). p.925-935
Abstract
1 Islands representing four stage classes, dated by their height above sea level, in a Baltic land uplift area were used to study genet level dynamics during colonization of the clonal moss Hylocomium splendens. Allozyme electrophoresis involving 10 polymorphic loci enabled accurate identification of 103 haplotypes from a sample of 694 shoots collected along transects across 10 islands. 2 The populations consisted initially of scattered colonies with single clones. The number of clones, and the tendency of colonies to be multiclonal,increased significantly with increasing age of islands, whilst their mean size decreased significantly. In the Skeppsvik Archipelago, H. splendens thus shows repeated recruitment. 3 The percentage male or... (More)
1 Islands representing four stage classes, dated by their height above sea level, in a Baltic land uplift area were used to study genet level dynamics during colonization of the clonal moss Hylocomium splendens. Allozyme electrophoresis involving 10 polymorphic loci enabled accurate identification of 103 haplotypes from a sample of 694 shoots collected along transects across 10 islands. 2 The populations consisted initially of scattered colonies with single clones. The number of clones, and the tendency of colonies to be multiclonal,increased significantly with increasing age of islands, whilst their mean size decreased significantly. In the Skeppsvik Archipelago, H. splendens thus shows repeated recruitment. 3 The percentage male or female fertile shoots relative to sterile shoots was positively correlated with age of the islands. The sex ratios were skewed during early colonization. 4 Spore capsules were found only in the oldest succession stage-classes. This can be explained by a greater chance for fertile males and females to grow within the fertilization range, which is limited to a few centimetres. 5 Genetic variation was accumulating with increasing population age. Correlations were stronger for mean number of alleles per locus (A) than for gene diversity (H-S). 6 No isolation by distance was detected among populations, indicating efficient and essentially random gene flow, probably occurring via wind-dispersed spores. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Ecology
volume
90
issue
6
pages
925 - 935
publisher
Wiley-Blackwell
external identifiers
  • wos:000179548000001
  • scopus:0036910410
ISSN
1365-2745
DOI
10.1046/j.1365-2745.2002.00723.x
language
English
LU publication?
yes
id
d9bbf16d-1aae-42ef-8073-ed4e5a43f039 (old id 147141)
date added to LUP
2007-07-02 09:05:41
date last changed
2017-03-26 03:40:07
@article{d9bbf16d-1aae-42ef-8073-ed4e5a43f039,
  abstract     = {1 Islands representing four stage classes, dated by their height above sea level, in a Baltic land uplift area were used to study genet level dynamics during colonization of the clonal moss Hylocomium splendens. Allozyme electrophoresis involving 10 polymorphic loci enabled accurate identification of 103 haplotypes from a sample of 694 shoots collected along transects across 10 islands. 2 The populations consisted initially of scattered colonies with single clones. The number of clones, and the tendency of colonies to be multiclonal,increased significantly with increasing age of islands, whilst their mean size decreased significantly. In the Skeppsvik Archipelago, H. splendens thus shows repeated recruitment. 3 The percentage male or female fertile shoots relative to sterile shoots was positively correlated with age of the islands. The sex ratios were skewed during early colonization. 4 Spore capsules were found only in the oldest succession stage-classes. This can be explained by a greater chance for fertile males and females to grow within the fertilization range, which is limited to a few centimetres. 5 Genetic variation was accumulating with increasing population age. Correlations were stronger for mean number of alleles per locus (A) than for gene diversity (H-S). 6 No isolation by distance was detected among populations, indicating efficient and essentially random gene flow, probably occurring via wind-dispersed spores.},
  author       = {Cronberg, Nils},
  issn         = {1365-2745},
  language     = {eng},
  number       = {6},
  pages        = {925--935},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Ecology},
  title        = {Colonization dynamics of the clonal moss Hylocomium splendens on islands in a Baltic land uplift area: reproduction, genet distribution and genetic variation},
  url          = {http://dx.doi.org/10.1046/j.1365-2745.2002.00723.x},
  volume       = {90},
  year         = {2002},
}