| Titre : |
AFLP markers reveal high clonal diversity and extreme longevity in four key arctic-alpine species |
| Type de document : |
texte imprimé |
| Auteurs : |
DE WITTE L. C., Auteur ; ARMBRUSTER G. F. J., Auteur ; GIELLY L., Auteur ; Pierre TABERLET P., Auteur ; STOCKLIN J., Auteur |
| Année de publication : |
2012 |
| Importance : |
1081-1097 |
| Langues : |
Anglais (eng) |
| Résumé : |
We investigated clonal diversity, genet size structure and genet longevity in populations of four arctic-alpine plants (Carex curvula, Dryas octopetala, Salix herbacea and Vaccinium uliginosum) to evaluate their persistence under past climatic oscillations and their potential resistance to future climate change. The size and number of genets were determined by an analysis of amplified fragment length polymorphisms and a standardized sampling design in several European arctic-alpine populations, where these species are dominant in the vegetation. Genet age was estimated by dividing the size by the annual horizontal size increment from in situ growth measurements. Clonal diversity was generally high but differed among species, and the frequency distribution of genet size was strongly left-skewed. The largest C. curvula genet had an estimated minimum age of c. 4100 years and a maximum age of c. 5000 years, although 84.8% of the genets in this species were |
| Saisie BD Flore : |
Rien à saisir |
| Permalink : |
https://portail-documentaire.cbnmc.fr/index.php?lvl=notice_display&id=29217 |
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