Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic
International audience Current climate change is significantly modifying Arctic ecosystems and their components, but the reference and direction of these changes are still undefined. The aim of this study was to provide well-grounded data on the present composition and structure of zooplankton from...
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ftsorbonneuniv:oai:HAL:insu-03661725v1 2024-09-15T18:00:42+00:00 Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic Trudnowska, E. Stemmann, L. Błachowiak-Samołyk, K. Kwasniewski, S. Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2020 https://insu.hal.science/insu-03661725 https://doi.org/10.1016/j.jmarsys.2020.103306 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2020.103306 insu-03661725 https://insu.hal.science/insu-03661725 BIBCODE: 2020JMS.20403306T doi:10.1016/j.jmarsys.2020.103306 ISSN: 0924-7963 Journal of Marine Systems https://insu.hal.science/insu-03661725 Journal of Marine Systems, 2020, 204, ⟨10.1016/j.jmarsys.2020.103306⟩ Oithona Calanus Atlantification Advection Climate change Indicators [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2020 ftsorbonneuniv https://doi.org/10.1016/j.jmarsys.2020.103306 2024-07-25T23:47:50Z International audience Current climate change is significantly modifying Arctic ecosystems and their components, but the reference and direction of these changes are still undefined. The aim of this study was to provide well-grounded data on the present composition and structure of zooplankton from boreal to Arctic latitudes. This comparative study was performed with a unified methodology in six fjords located along the west coasts of Norway and Svalbard. Comparisons between the fjords' environmental characteristics (temperature, salinity, chlorophyll, and particles) and the zooplankton community, described with several metrics (abundance and biovolume) and traits (taxonomy and size), were performed to recognise the potential of various ecological indicators for future monitoring. While hydrography and the taxonomic composition of zooplankton were specific to each fjord and changed along the latitudinal environmental gradient, the clustering of particle characteristics (size, concentration, and transparency) and zooplankton size structures alludes to their susceptibility to additional, local processes. The differences in the biotic and abiotic characteristics distinguished the semi-closed fjords from the fjords prone to Atlantic water advection. The fjords with a limited water mass exchange incorporated local or Arctic-type waters and were host to specific zooplankton communities and particles, with the marked presence of species adapted to high particle concentrations (Microsetella norvegica) or species of Arctic affiliation (Calanus glacialis). In the open fjords, zooplankton communities were characterised by the predomination of Oithona similis and Calanus finmarchicus, confirming influence of Atlantic water. The zooplankton community size structure, expressed as abundance, was mainly shaped by changes in the contributions of small copepods, whereas the size structure expressed as biovolume reflected the differences in the co-occurring sibling species of Calanus spp. and/or differences in their dominating ... Article in Journal/Newspaper Calanus finmarchicus Calanus glacialis Climate change Svalbard Zooplankton Copepods HAL Sorbonne Université Journal of Marine Systems 204 103306 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
Oithona Calanus Atlantification Advection Climate change Indicators [SDU]Sciences of the Universe [physics] |
spellingShingle |
Oithona Calanus Atlantification Advection Climate change Indicators [SDU]Sciences of the Universe [physics] Trudnowska, E. Stemmann, L. Błachowiak-Samołyk, K. Kwasniewski, S. Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic |
topic_facet |
Oithona Calanus Atlantification Advection Climate change Indicators [SDU]Sciences of the Universe [physics] |
description |
International audience Current climate change is significantly modifying Arctic ecosystems and their components, but the reference and direction of these changes are still undefined. The aim of this study was to provide well-grounded data on the present composition and structure of zooplankton from boreal to Arctic latitudes. This comparative study was performed with a unified methodology in six fjords located along the west coasts of Norway and Svalbard. Comparisons between the fjords' environmental characteristics (temperature, salinity, chlorophyll, and particles) and the zooplankton community, described with several metrics (abundance and biovolume) and traits (taxonomy and size), were performed to recognise the potential of various ecological indicators for future monitoring. While hydrography and the taxonomic composition of zooplankton were specific to each fjord and changed along the latitudinal environmental gradient, the clustering of particle characteristics (size, concentration, and transparency) and zooplankton size structures alludes to their susceptibility to additional, local processes. The differences in the biotic and abiotic characteristics distinguished the semi-closed fjords from the fjords prone to Atlantic water advection. The fjords with a limited water mass exchange incorporated local or Arctic-type waters and were host to specific zooplankton communities and particles, with the marked presence of species adapted to high particle concentrations (Microsetella norvegica) or species of Arctic affiliation (Calanus glacialis). In the open fjords, zooplankton communities were characterised by the predomination of Oithona similis and Calanus finmarchicus, confirming influence of Atlantic water. The zooplankton community size structure, expressed as abundance, was mainly shaped by changes in the contributions of small copepods, whereas the size structure expressed as biovolume reflected the differences in the co-occurring sibling species of Calanus spp. and/or differences in their dominating ... |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Trudnowska, E. Stemmann, L. Błachowiak-Samołyk, K. Kwasniewski, S. |
author_facet |
Trudnowska, E. Stemmann, L. Błachowiak-Samołyk, K. Kwasniewski, S. |
author_sort |
Trudnowska, E. |
title |
Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic |
title_short |
Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic |
title_full |
Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic |
title_fullStr |
Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic |
title_full_unstemmed |
Taxonomic and size structures of zooplankton communities in the fjords along the Atlantic water passage to the Arctic |
title_sort |
taxonomic and size structures of zooplankton communities in the fjords along the atlantic water passage to the arctic |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://insu.hal.science/insu-03661725 https://doi.org/10.1016/j.jmarsys.2020.103306 |
genre |
Calanus finmarchicus Calanus glacialis Climate change Svalbard Zooplankton Copepods |
genre_facet |
Calanus finmarchicus Calanus glacialis Climate change Svalbard Zooplankton Copepods |
op_source |
ISSN: 0924-7963 Journal of Marine Systems https://insu.hal.science/insu-03661725 Journal of Marine Systems, 2020, 204, ⟨10.1016/j.jmarsys.2020.103306⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jmarsys.2020.103306 insu-03661725 https://insu.hal.science/insu-03661725 BIBCODE: 2020JMS.20403306T doi:10.1016/j.jmarsys.2020.103306 |
op_doi |
https://doi.org/10.1016/j.jmarsys.2020.103306 |
container_title |
Journal of Marine Systems |
container_volume |
204 |
container_start_page |
103306 |
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1810437873814470656 |