Meny

Javascript verkar inte påslaget? - Vissa delar av Lunds universitets webbplats fungerar inte optimalt utan javascript, kontrollera din webbläsares inställningar.
Du är här

Genetic variation in the moss Homalothecium lutescens in relation to habitat age and structure

Författare:
  • Frida Rosengren
  • Nils Cronberg
  • Triin Reitalu
  • Honor C Prentice
Publiceringsår: 2013
Språk: Engelska
Sidor: 431-441
Publikation/Tidskrift/Serie: Botany
Volym: 91
Nummer: 7
Dokumenttyp: Artikel i tidskrift
Förlag: Canadian Science Publishing, NRC Research Press

Abstract english

Relationships between genetic (allozyme) variation and landscape age and structure were investigated in 17 calcareous grassland demes of the moss Homalothecium lutescens (Hedw.) H. Rob. on the Baltic island of Oland. Mean within-deme gene diversity (H-S = 0.152) was moderate compared with other bryophyte studies, and the between-deme proportion of the total diversity (G(ST) = 0.100, Jost's D = 0.011) was low but significantly different from zero. Clonal mixing, measured as the proportion of two adjacent shoots having different haplotypes, was relatively high (mean 0.32 over all demes). HS was higher in old grassland fragments, but negatively related to vascular plant species richness. Allelic richness (A) was positively associated with the area of old (>= 280 years) grassland in the surroundings: although demes in old grasslands are genetically more variable than those in younger grasslands, proximity to large areas of old grassland may promote genetic variability even in younger grassland demes. The importance of management continuity for species diversity has been stressed in many earlier grassland studies. Here, we conclude that grassland fragments with a long history of grazing continuity are also positively associated with variability at within-species level, as exemplified by the bryophyte H. lutescens.

Keywords

  • Ecology
  • allozymes
  • bryophytes
  • calcareous grassland
  • genetic variation
  • landscape history

Other

Published
  • BECC
  • ISSN: 1916-2804
Nils Cronberg
E-post: nils [dot] cronberg [at] biol [dot] lu [dot] se

Universitetslektor

Biodiversitet

+46 46 222 89 74

+46 70 369 10 63

E-A311

50

Forskargrupp

Växtbiologi

Doktorander och postdoktorer

Huvudhandledare

Biträdande handledare

Extern handledare

Postdoktorer

Annick Lang