Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse
Populations along the northern boundary of a marine species' distributional range in the NE Atlantic are expected to harbor lower standing genetic variation as a consequence of post-glacial expansion following the last glacial maximum. Founder events and marginal habitat availability may render...
Published in: | Marine Ecology Progress Series |
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Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2013
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Online Access: | https://hdl.handle.net/11370/94497d19-8584-459f-ab6a-22fb43a4295f https://research.rug.nl/en/publications/94497d19-8584-459f-ab6a-22fb43a4295f https://doi.org/10.3354/meps10373 https://pure.rug.nl/ws/files/62488196/Eelgrass_Zostera_marina_populations_in_northern_Norwegian_fjords_are_genetically_isolated_and_diverse.pdf |
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ftunigroningenpu:oai:pure.rug.nl:publications/94497d19-8584-459f-ab6a-22fb43a4295f 2024-06-02T08:04:04+00:00 Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse Olsen, Jeanine L. Coyer, James A. Stam, Wytze T. Moy, Frithjof E. Christie, Hartvig Jorgensen, Nina Mari 2013-07-12 application/pdf https://hdl.handle.net/11370/94497d19-8584-459f-ab6a-22fb43a4295f https://research.rug.nl/en/publications/94497d19-8584-459f-ab6a-22fb43a4295f https://doi.org/10.3354/meps10373 https://pure.rug.nl/ws/files/62488196/Eelgrass_Zostera_marina_populations_in_northern_Norwegian_fjords_are_genetically_isolated_and_diverse.pdf eng eng https://research.rug.nl/en/publications/94497d19-8584-459f-ab6a-22fb43a4295f info:eu-repo/semantics/openAccess Olsen , J L , Coyer , J A , Stam , W T , Moy , F E , Christie , H & Jorgensen , N M 2013 , ' Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse ' , Marine Ecology Progress Series , vol. 486 , pp. 121-132 . https://doi.org/10.3354/meps10373 Seagrass Zostera marina Populations Genetic diversity Management Leading-edge GENOTYPIC DIVERSITY GLACIAL REFUGIA FUCUS-SERRATUS F-STATISTICS MEADOWS L DISTANCE CONNECTIVITY ECOSYSTEM ATLANTIC article 2013 ftunigroningenpu https://doi.org/10.3354/meps10373 2024-05-07T19:03:32Z Populations along the northern boundary of a marine species' distributional range in the NE Atlantic are expected to harbor lower standing genetic variation as a consequence of post-glacial expansion following the last glacial maximum. Founder events and marginal habitat availability may render the edge populations more vulnerable to anthropogenic stress and less cap able of rapid adaptation to global climate change, a concern for conservation and management. We analyzed meadow architecture, persistence and connectivity within and among 15 locations (600 samples genotyped with 8 microsatellite loci) in 3 fjords in Troms County, Norway (69 degrees N). Whereas global mean allelic diversity (standardized for sample size) was in accordance with previous studies using the same markers, more extensive sampling revealed a broader range of allelic richness (mean = 2.85; range = 1.84 to 4.21) in the regional pool. Genotypic diversity was typically high, whereas large genets were rare (2 out of 15 locations). Population differentiation (F-ST) was 2 to 6 times higher between fjords than within fjords. A Bayesian (STRUCTURE) analysis also strongly supported the genetic distinctness of each fjord. Although 9 locations within the 60 km long Balsfjord were connected by gene flow, demographic connectivity may actually be low, as fixed differences were observed at 6 of the 9 locations, along with significantly positive inbreeding coefficients and strong substructure. Overall, our results suggest that these northern, leading-edge meadows are healthy, but vigilance is required to avoid further losses. Fjord-level management, especially of the larger fjords, will be sufficient to capture the range of variation. Article in Journal/Newspaper Balsfjord Troms University of Groningen research database Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) Norway Marine Ecology Progress Series 486 121 132 |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
Seagrass Zostera marina Populations Genetic diversity Management Leading-edge GENOTYPIC DIVERSITY GLACIAL REFUGIA FUCUS-SERRATUS F-STATISTICS MEADOWS L DISTANCE CONNECTIVITY ECOSYSTEM ATLANTIC |
spellingShingle |
Seagrass Zostera marina Populations Genetic diversity Management Leading-edge GENOTYPIC DIVERSITY GLACIAL REFUGIA FUCUS-SERRATUS F-STATISTICS MEADOWS L DISTANCE CONNECTIVITY ECOSYSTEM ATLANTIC Olsen, Jeanine L. Coyer, James A. Stam, Wytze T. Moy, Frithjof E. Christie, Hartvig Jorgensen, Nina Mari Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse |
topic_facet |
Seagrass Zostera marina Populations Genetic diversity Management Leading-edge GENOTYPIC DIVERSITY GLACIAL REFUGIA FUCUS-SERRATUS F-STATISTICS MEADOWS L DISTANCE CONNECTIVITY ECOSYSTEM ATLANTIC |
description |
Populations along the northern boundary of a marine species' distributional range in the NE Atlantic are expected to harbor lower standing genetic variation as a consequence of post-glacial expansion following the last glacial maximum. Founder events and marginal habitat availability may render the edge populations more vulnerable to anthropogenic stress and less cap able of rapid adaptation to global climate change, a concern for conservation and management. We analyzed meadow architecture, persistence and connectivity within and among 15 locations (600 samples genotyped with 8 microsatellite loci) in 3 fjords in Troms County, Norway (69 degrees N). Whereas global mean allelic diversity (standardized for sample size) was in accordance with previous studies using the same markers, more extensive sampling revealed a broader range of allelic richness (mean = 2.85; range = 1.84 to 4.21) in the regional pool. Genotypic diversity was typically high, whereas large genets were rare (2 out of 15 locations). Population differentiation (F-ST) was 2 to 6 times higher between fjords than within fjords. A Bayesian (STRUCTURE) analysis also strongly supported the genetic distinctness of each fjord. Although 9 locations within the 60 km long Balsfjord were connected by gene flow, demographic connectivity may actually be low, as fixed differences were observed at 6 of the 9 locations, along with significantly positive inbreeding coefficients and strong substructure. Overall, our results suggest that these northern, leading-edge meadows are healthy, but vigilance is required to avoid further losses. Fjord-level management, especially of the larger fjords, will be sufficient to capture the range of variation. |
format |
Article in Journal/Newspaper |
author |
Olsen, Jeanine L. Coyer, James A. Stam, Wytze T. Moy, Frithjof E. Christie, Hartvig Jorgensen, Nina Mari |
author_facet |
Olsen, Jeanine L. Coyer, James A. Stam, Wytze T. Moy, Frithjof E. Christie, Hartvig Jorgensen, Nina Mari |
author_sort |
Olsen, Jeanine L. |
title |
Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse |
title_short |
Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse |
title_full |
Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse |
title_fullStr |
Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse |
title_full_unstemmed |
Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse |
title_sort |
eelgrass zostera marina populations in northern norwegian fjords are genetically isolated and diverse |
publishDate |
2013 |
url |
https://hdl.handle.net/11370/94497d19-8584-459f-ab6a-22fb43a4295f https://research.rug.nl/en/publications/94497d19-8584-459f-ab6a-22fb43a4295f https://doi.org/10.3354/meps10373 https://pure.rug.nl/ws/files/62488196/Eelgrass_Zostera_marina_populations_in_northern_Norwegian_fjords_are_genetically_isolated_and_diverse.pdf |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) |
geographic |
Balsfjord Norway |
geographic_facet |
Balsfjord Norway |
genre |
Balsfjord Troms |
genre_facet |
Balsfjord Troms |
op_source |
Olsen , J L , Coyer , J A , Stam , W T , Moy , F E , Christie , H & Jorgensen , N M 2013 , ' Eelgrass Zostera marina populations in northern Norwegian fjords are genetically isolated and diverse ' , Marine Ecology Progress Series , vol. 486 , pp. 121-132 . https://doi.org/10.3354/meps10373 |
op_relation |
https://research.rug.nl/en/publications/94497d19-8584-459f-ab6a-22fb43a4295f |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3354/meps10373 |
container_title |
Marine Ecology Progress Series |
container_volume |
486 |
container_start_page |
121 |
op_container_end_page |
132 |
_version_ |
1800748688852647936 |