Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae)
Paradoxically, several of the ecologically most important plant groups in the Arctic are little understood in terms of taxonomy and biogeographic history. The circumpolar Carex bigelowii s. l. (Cyperaceae) is abundant in the Arctic and is one of the most complicated arctic plant groups. While its ec...
Published in: | American Journal of Botany |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2008
|
Subjects: | |
Online Access: | http://dx.doi.org/10.3732/ajb.2007196 https://onlinelibrary.wiley.com/doi/full/10.3732/ajb.2007196 |
id |
crwiley:10.3732/ajb.2007196 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.3732/ajb.2007196 2023-12-03T10:16:34+01:00 Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) Schönswetter, Peter Elven, Reidar Brochmann, Christian 2008 http://dx.doi.org/10.3732/ajb.2007196 https://onlinelibrary.wiley.com/doi/full/10.3732/ajb.2007196 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Botany volume 95, issue 8, page 1006-1014 ISSN 0002-9122 1537-2197 Plant Science Genetics Ecology, Evolution, Behavior and Systematics journal-article 2008 crwiley https://doi.org/10.3732/ajb.2007196 2023-11-09T13:39:07Z Paradoxically, several of the ecologically most important plant groups in the Arctic are little understood in terms of taxonomy and biogeographic history. The circumpolar Carex bigelowii s. l. (Cyperaceae) is abundant in the Arctic and is one of the most complicated arctic plant groups. While its ecology and population genetics have been extensively studied, its taxonomy is largely unexplored. We analyzed the large‐scale geographical structuring of amplified fragment length polymorphisms (AFLPs) covering most of the distribution range. We detected high levels of genetic variation, most (66%) within populations, and a fairly weak genetic structure. Only the Central Asian populations, referred to as C. orbicularis , were strongly divergent. For the remaining populations, Bayesian clustering separated three distinct clusters (one European, one amphi‐Atlantic, and one broadly amphi‐Beringian), probably reflecting different major glacial refugia and recent transoceanic dispersal. The isolated central European populations were most closely related to those from a larger distribution area in northern Europe. Differences in genetic diversity suggest that the Alpine and Tatra populations have experienced strong bottlenecks, whereas the Krkonoše population may have been part of a continuous distribution area during the cold stages of the Pleistocene. Finally, we discuss the relevance of our results for a uniform, range‐wide taxonomic concept. Article in Journal/Newspaper Arctic Carex bigelowii Wiley Online Library (via Crossref) Arctic American Journal of Botany 95 8 1006 1014 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics Schönswetter, Peter Elven, Reidar Brochmann, Christian Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) |
topic_facet |
Plant Science Genetics Ecology, Evolution, Behavior and Systematics |
description |
Paradoxically, several of the ecologically most important plant groups in the Arctic are little understood in terms of taxonomy and biogeographic history. The circumpolar Carex bigelowii s. l. (Cyperaceae) is abundant in the Arctic and is one of the most complicated arctic plant groups. While its ecology and population genetics have been extensively studied, its taxonomy is largely unexplored. We analyzed the large‐scale geographical structuring of amplified fragment length polymorphisms (AFLPs) covering most of the distribution range. We detected high levels of genetic variation, most (66%) within populations, and a fairly weak genetic structure. Only the Central Asian populations, referred to as C. orbicularis , were strongly divergent. For the remaining populations, Bayesian clustering separated three distinct clusters (one European, one amphi‐Atlantic, and one broadly amphi‐Beringian), probably reflecting different major glacial refugia and recent transoceanic dispersal. The isolated central European populations were most closely related to those from a larger distribution area in northern Europe. Differences in genetic diversity suggest that the Alpine and Tatra populations have experienced strong bottlenecks, whereas the Krkonoše population may have been part of a continuous distribution area during the cold stages of the Pleistocene. Finally, we discuss the relevance of our results for a uniform, range‐wide taxonomic concept. |
format |
Article in Journal/Newspaper |
author |
Schönswetter, Peter Elven, Reidar Brochmann, Christian |
author_facet |
Schönswetter, Peter Elven, Reidar Brochmann, Christian |
author_sort |
Schönswetter, Peter |
title |
Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) |
title_short |
Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) |
title_full |
Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) |
title_fullStr |
Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) |
title_full_unstemmed |
Trans‐Atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge Carex bigelowii s. l. (Cyperaceae) |
title_sort |
trans‐atlantic dispersal and large‐scale lack of genetic structure in the circumpolar, arctic‐alpine sedge carex bigelowii s. l. (cyperaceae) |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.3732/ajb.2007196 https://onlinelibrary.wiley.com/doi/full/10.3732/ajb.2007196 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Carex bigelowii |
genre_facet |
Arctic Carex bigelowii |
op_source |
American Journal of Botany volume 95, issue 8, page 1006-1014 ISSN 0002-9122 1537-2197 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.3732/ajb.2007196 |
container_title |
American Journal of Botany |
container_volume |
95 |
container_issue |
8 |
container_start_page |
1006 |
op_container_end_page |
1014 |
_version_ |
1784263517610704896 |