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  North Atlantic phylogeography and large-scale population differentiation of the seagrass Zostera marina L.

Olsen, J. L., Stam, W. T., Coyer, J. A., Reusch, T. B. H., Billingham, M., Boström, C., et al. (2004). North Atlantic phylogeography and large-scale population differentiation of the seagrass Zostera marina L. Molecular Ecology, 13(7), 1923-1941. doi:10.1111/j.1365-294X.2004.02205.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DAB7-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-DAB8-1
Genre: Journal Article

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 Creators:
Olsen, Jeanine L., Author
Stam, Wytze T., Author
Coyer, James A., Author
Reusch, Thorsten B. H.1, 2, Author              
Billingham, Martin, Author
Boström, Christoffer, Author
Calvert, Elizabeth, Author
Christie, Hartvig, Author
Granger, Stephen, Author
La Lumière, Richard, Author
Milchakova, Nataliya, Author
Oudot-Le Secq, Marie-Pierre, Author
Procaccini, Gabriele, Author
Sanjabi, Bahram, Author
Serrão, Ester, Author
Veldsink, Jan, Author
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              
2Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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Free keywords: ice age; ITS; microsatellites; phylogeography; seagrass, Zostera marina
 Abstract: As the most widespread seagrass in temperate waters of the Northern Hemisphere, Zostera marina provides a unique opportunity to investigate the extent to which the historical legacy of the last glacial maximum (LGM18 000-10 000 years bp) is detectable in modern population genetic structure. We used sequences from the nuclear rDNA-internal transcribed spacer (ITS) and chloroplast matK-intron, and nine microsatellite loci to survey 49 populations (> 2000 individuals) from throughout the species' range. Minimal sequence variation between Pacific and Atlantic populations combined with biogeographical groupings derived from the microsatellite data, suggest that the trans-Arctic connection is currently open. The east Pacific and west Atlantic are more connected than either is to the east Atlantic. Allelic richness was almost two-fold higher in the Pacific. Populations from putative Atlantic refugia now represent the southern edges of the distribution and are not genetically diverse. Unexpectedly, the highest allelic diversity was observed in the North Sea-Wadden Sea-southwest Baltic region. Except for the Mediterranean and Black Seas, significant isolation-by-distance was found from ~150 to 5000 km. A transition from weak to strong isolation-by-distance occurred at ~150 km among northern European populations suggesting this scale as the natural limit for dispersal within the metapopulation. Links between historical and contemporary processes are discussed in terms of the projected effects of climate change on coastal marine plants. The identification of a high genetic diversity hotspot in Northern Europe provides a basis for restoration decisions.

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Language(s): eng - English
 Dates: 2004-07
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 173755
DOI: 10.1111/j.1365-294X.2004.02205.x
Other: 2281/S 38156
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Title: Molecular Ecology
Source Genre: Journal
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Pages: - Volume / Issue: 13 (7) Sequence Number: - Start / End Page: 1923 - 1941 Identifier: ISSN: 0962-1083