Establishment and genetic structure of Empetrum hermaphroditum populations in northern Sweden

Alfred Szmidt, Marie Charlotte Nilsson, Elémer Briceño, Olle Zackrisson, Xiao Ru Wang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In late successions of the boreal forest of northern Sweden the evergreen dwarf shrub Empetrum hermaphroditum forms an extensive cover and is believed to spread mainly vegetatively through layering. To analyse the process of population establishment and the relative importance of sexual vs asexual reproduction and the spatial clonal distribution of this species we selected one mainland and two island sites of different post-fire successional ages (145, 375 and 1720 yr since last fire, respectively). Using 61 polymorphic RAPD markers, we found 96 genotypes in a total of 133 samples. All three populations showed high levels of genetic variation. AMOVA analysis revealed that 33% of the total variation resided among sites, 26% resided among plots within sites and 41% was due to variation within plots. The youngest population had only 14% clonal fraction. In contrast, the oldest population had > 30% clonal fraction and many genets had dimensions of 10-40 m and were intermingled. It appears that E. hermaphroditum establishes by seeds to a larger extent than previously thought and that the clonal spread by layering is rather slow.

Original languageEnglish
Pages (from-to)627-634
Number of pages8
JournalJournal of Vegetation Science
Volume13
Issue number5
DOIs
Publication statusPublished - Jan 1 2002

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Empetrum
genetic structure
Sweden
genet
asexual reproduction
young population
sexual reproduction
boreal forest
genetic variation
genotype
shrub
seed
boreal forests
biogeography
shrubs
seeds
sampling

All Science Journal Classification (ASJC) codes

  • Ecology
  • Plant Science

Cite this

Establishment and genetic structure of Empetrum hermaphroditum populations in northern Sweden. / Szmidt, Alfred; Nilsson, Marie Charlotte; Briceño, Elémer; Zackrisson, Olle; Wang, Xiao Ru.

In: Journal of Vegetation Science, Vol. 13, No. 5, 01.01.2002, p. 627-634.

Research output: Contribution to journalArticle

Szmidt, Alfred ; Nilsson, Marie Charlotte ; Briceño, Elémer ; Zackrisson, Olle ; Wang, Xiao Ru. / Establishment and genetic structure of Empetrum hermaphroditum populations in northern Sweden. In: Journal of Vegetation Science. 2002 ; Vol. 13, No. 5. pp. 627-634.
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