Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding
In many species of marine benthic invertebrates, a planktonic larval phase plays a critical role in dispersal. Very little is known about the larval biology of most species, however, in part because species identification has historically been hindered by the microscopic size and morphological simil...
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ftdoajarticles:oai:doaj.org/article:8883519aa8814b6c88196fd7846ed100 2023-05-15T15:12:16+02:00 Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding Raphaëlle Descôteaux Elizaveta Ershova Owen S. Wangensteen Kim Præbel Paul E. Renaud Finlo Cottier Bodil A. Bluhm 2021-05-01T00:00:00Z https://doi.org/10.3389/fmars.2021.677732 https://doaj.org/article/8883519aa8814b6c88196fd7846ed100 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2021.677732/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2021.677732 https://doaj.org/article/8883519aa8814b6c88196fd7846ed100 Frontiers in Marine Science, Vol 8 (2021) meroplankton larvae seasonality DNA barcoding Barents Sea life history traits Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2021 ftdoajarticles https://doi.org/10.3389/fmars.2021.677732 2022-12-31T13:12:26Z In many species of marine benthic invertebrates, a planktonic larval phase plays a critical role in dispersal. Very little is known about the larval biology of most species, however, in part because species identification has historically been hindered by the microscopic size and morphological similarity among related taxa. This study aimed to determine the taxonomic composition and seasonal distribution of meroplankton in the Barents Sea, across the Polar Front. We collected meroplankton during five time points seasonally and used high-throughput DNA barcoding of individual larvae to obtain species-level information on larval seasonality. We found that meroplankton was highly diverse (72 taxa from eight phyla) and present in the Barents Sea year-round with a peak in abundance in August and November, defying the conventional wisdom that peak abundance would coincide with the spring phytoplankton bloom. Ophiuroids, bivalves, and polychaetes dominated larval abundance while gastropods and polychaetes accounted for the bulk of the taxon diversity. Community structure varied seasonally and total abundance was generally higher south of the Polar Front while taxon richness was overall greater to the north. Of the species identified, most were known inhabitants of the Barents Sea. However, the nemertean Cephalothrix iwatai and the brittle star Ophiocten gracilis were abundant in the meroplankton despite never having been previously recorded in the northern Barents Sea. The new knowledge on seasonal patterns of individual meroplanktonic species has implications for understanding environment-biotic interactions in a changing Arctic and provides a framework for early detection of potential newcomers to the system. Article in Journal/Newspaper Arctic Barents Sea Phytoplankton Directory of Open Access Journals: DOAJ Articles Arctic Barents Sea Frontiers in Marine Science 8 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
meroplankton larvae seasonality DNA barcoding Barents Sea life history traits Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
meroplankton larvae seasonality DNA barcoding Barents Sea life history traits Science Q General. Including nature conservation geographical distribution QH1-199.5 Raphaëlle Descôteaux Elizaveta Ershova Owen S. Wangensteen Kim Præbel Paul E. Renaud Finlo Cottier Bodil A. Bluhm Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding |
topic_facet |
meroplankton larvae seasonality DNA barcoding Barents Sea life history traits Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
In many species of marine benthic invertebrates, a planktonic larval phase plays a critical role in dispersal. Very little is known about the larval biology of most species, however, in part because species identification has historically been hindered by the microscopic size and morphological similarity among related taxa. This study aimed to determine the taxonomic composition and seasonal distribution of meroplankton in the Barents Sea, across the Polar Front. We collected meroplankton during five time points seasonally and used high-throughput DNA barcoding of individual larvae to obtain species-level information on larval seasonality. We found that meroplankton was highly diverse (72 taxa from eight phyla) and present in the Barents Sea year-round with a peak in abundance in August and November, defying the conventional wisdom that peak abundance would coincide with the spring phytoplankton bloom. Ophiuroids, bivalves, and polychaetes dominated larval abundance while gastropods and polychaetes accounted for the bulk of the taxon diversity. Community structure varied seasonally and total abundance was generally higher south of the Polar Front while taxon richness was overall greater to the north. Of the species identified, most were known inhabitants of the Barents Sea. However, the nemertean Cephalothrix iwatai and the brittle star Ophiocten gracilis were abundant in the meroplankton despite never having been previously recorded in the northern Barents Sea. The new knowledge on seasonal patterns of individual meroplanktonic species has implications for understanding environment-biotic interactions in a changing Arctic and provides a framework for early detection of potential newcomers to the system. |
format |
Article in Journal/Newspaper |
author |
Raphaëlle Descôteaux Elizaveta Ershova Owen S. Wangensteen Kim Præbel Paul E. Renaud Finlo Cottier Bodil A. Bluhm |
author_facet |
Raphaëlle Descôteaux Elizaveta Ershova Owen S. Wangensteen Kim Præbel Paul E. Renaud Finlo Cottier Bodil A. Bluhm |
author_sort |
Raphaëlle Descôteaux |
title |
Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding |
title_short |
Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding |
title_full |
Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding |
title_fullStr |
Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding |
title_full_unstemmed |
Meroplankton Diversity, Seasonality and Life-History Traits Across the Barents Sea Polar Front Revealed by High-Throughput DNA Barcoding |
title_sort |
meroplankton diversity, seasonality and life-history traits across the barents sea polar front revealed by high-throughput dna barcoding |
publisher |
Frontiers Media S.A. |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.677732 https://doaj.org/article/8883519aa8814b6c88196fd7846ed100 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Phytoplankton |
genre_facet |
Arctic Barents Sea Phytoplankton |
op_source |
Frontiers in Marine Science, Vol 8 (2021) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2021.677732/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2021.677732 https://doaj.org/article/8883519aa8814b6c88196fd7846ed100 |
op_doi |
https://doi.org/10.3389/fmars.2021.677732 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
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1766342981418221568 |