Frequent Long-Distance Plant Colonization in the Changing Arctic
2007; American Association for the Advancement of Science; Volume: 316; Issue: 5831 Linguagem: Inglês
10.1126/science.1139178
ISSN1095-9203
AutoresInger Greve Alsos, Pernille Bronken Eidesen, Dorothée Ehrich, Inger Skrede, Kristine Bakke Westergaard, Gro Hilde Jacobsen, Jon Y. Landvik, Pierre Taberlet, Christian Brochmann,
Tópico(s)Environmental DNA in Biodiversity Studies
ResumoThe ability of species to track their ecological niche after climate change is a major source of uncertainty in predicting their future distribution. By analyzing DNA fingerprinting (amplified fragment-length polymorphism) of nine plant species, we show that long-distance colonization of a remote arctic archipelago, Svalbard, has occurred repeatedly and from several source regions. Propagules are likely carried by wind and drifting sea ice. The genetic effect of restricted colonization was strongly correlated with the temperature requirements of the species, indicating that establishment limits distribution more than dispersal. Thus, it may be appropriate to assume unlimited dispersal when predicting long-term range shifts in the Arctic.
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