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Allozyme variation at a PGI locus in differently aged populations of Moehringia trinervia (Caryophyllaceae) in a successional area
Södertörns högskola, Avdelning Naturvetenskap.ORCID iD: 0000-0002-5013-6462
2002 (English)In: Nordic Journal of Botany, ISSN 0107-055X, E-ISSN 1756-1051, Vol. 22, no 3, p. 303-311Article in journal (Refereed) Published
Abstract [en]

We studied genetic effects of the colonisation process during primary succession by analysing allozyme variation at a PGI locus in differently aged populations of Moehringia trinervia, which is a selfing annual with low dispersal ability. The populations studied come from islands and shores created in the 1880s by a drop in the water table of a Swedish lake and from old parts of a large island and of the mainland. The population age is known from five vegetation analyses over a century. We have also analysed the genetic composition of M. trinervia derived from seeds in the soil. Mainland populations had a higher genetic diversity than island populations that were little differentiated and differed genetically from the mainland populations. There was no temporal trend in the distribution of genetic variation on the new islands. The presence of alleles in the extant populations was associated with the proportion of that allele in the seed bank, indicating a main recruitment from the seed bank and not by repeated immigrations. We suggest that some of the new islands were colonised by a few early founders from the mainland. Later colonisation has occurred between adjacent islands, which preserves the founder effect and could explain the uniform, low genetic variation in the island populations

Place, publisher, year, edition, pages
2002. Vol. 22, no 3, p. 303-311
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Natural Sciences
Identifiers
URN: urn:nbn:se:hig:diva-23404DOI: 10.1111/j.1756-1051.2002.tb01375.xISI: 000182917200002Scopus ID: 2-s2.0-0037545565OAI: oai:DiVA.org:hig-23404DiVA, id: diva2:1069068
Available from: 2011-02-14 Created: 2017-01-27 Last updated: 2018-03-13Bibliographically approved

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Lönn, Mikael

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CiteExportLink to record
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Citation style
  • apa
  • harvard-cite-them-right
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  • Other style
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  • sv-SE
  • en-GB
  • en-US
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  • nn-NO
  • nn-NB
  • de-DE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
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