Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic
Svalbard fjords are facing a significant increase in Atlantic water inflow, which influences all ecosystem components, thus the objective of this study was to assess how recent Atlantification impacts the functioning of zooplankton community. For this purpose, two year-round operating sediment traps...
Published in: | Science of The Total Environment |
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Language: | English |
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Online Access: | https://hdl.handle.net/10037/23656 https://doi.org/10.1016/j.scitotenv.2021.145599 |
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ftunivtroemsoe:oai:munin.uit.no:10037/23656 2023-05-15T14:23:28+02:00 Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic Weydmann-Zwolicka, Agata Prątnicka, Paula Łącka, Magdalena Majaneva, Sanna Cottier, Finlo Robert Berge, Jørgen 2021-02-04 https://hdl.handle.net/10037/23656 https://doi.org/10.1016/j.scitotenv.2021.145599 eng eng Elsevier Science of the Total Environment info:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change// Weydmann-Zwolicka, Prątnicka, Łącka, Majaneva, Cottier FR, Berge. Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic. Science of the Total Environment. 2021;773 FRIDAID 1900645 doi:10.1016/j.scitotenv.2021.145599 0048-9697 1879-1026 https://hdl.handle.net/10037/23656 openAccess Copyright 2021 The Author(s) Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2021 ftunivtroemsoe https://doi.org/10.1016/j.scitotenv.2021.145599 2022-01-12T23:56:33Z Svalbard fjords are facing a significant increase in Atlantic water inflow, which influences all ecosystem components, thus the objective of this study was to assess how recent Atlantification impacts the functioning of zooplankton community. For this purpose, two year-round operating sediment traps and associated hydrographic instruments, providing continuous time series of zooplankton and sediment fluxes, were deployed in the Atlantic-influenced Kongsfjorden and the typical high Arctic fjord Rijpfjorden. We used multivariate statistical methods to analyze how environmental variables, including the sediment fluxes, influence the zooplankton communities in the fjords. We found out that sedimentation rates were an order of magnitude higher in Kongsfjorden (reaching 39.7 g m−2 d−1 in December) and increased in autumn, while in Rijpfjorden, they peaked in late winter - early spring (2.9 g m−2 d−1 in February). Such sediment flux patterns might result from the redeposition of sediments from shallower, subtidal areas and were probably connected to autumn/winter storms. According to multivariate analyses, zooplankton in Kongsfjorden were significantly influenced by water temperature, which explained 22% of their variation, and the flux of organic and mineral sediments explaining 15% and 7.8%, respectively; while in Rijpfjorden, it was sea ice (25.3%), water temperature (16.2%), salinity (8.1%), and mineral sedimentation (6.3%). The structure of zooplankton communities in both fjords was similar in winter; in Kongsfjorden, zooplankton kept developing through spring and summer, while in the Arctic Rijpfjorden, the community paused until the onset of phytoplankton bloom and sea ice break-up in summer, to finally achieve, in autumn, a similar species and development stage structure as summer in the Atlantic-influenced fjord. Our study demonstrates how integrating multiple pieces of information can provide key insights into the relations between Atlantification, sediment flux, and zooplankton community, thus helping to assess the functioning of high Arctic ecosystems under climate change conditions. Article in Journal/Newspaper Arctic Arctic Climate change Kongsfjord* Kongsfjorden Phytoplankton Rijpfjord* Sea ice Svalbard Zooplankton University of Tromsø: Munin Open Research Archive Arctic Rijpfjorden ENVELOPE(22.188,22.188,80.165,80.165) Svalbard Science of The Total Environment 773 145599 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
Svalbard fjords are facing a significant increase in Atlantic water inflow, which influences all ecosystem components, thus the objective of this study was to assess how recent Atlantification impacts the functioning of zooplankton community. For this purpose, two year-round operating sediment traps and associated hydrographic instruments, providing continuous time series of zooplankton and sediment fluxes, were deployed in the Atlantic-influenced Kongsfjorden and the typical high Arctic fjord Rijpfjorden. We used multivariate statistical methods to analyze how environmental variables, including the sediment fluxes, influence the zooplankton communities in the fjords. We found out that sedimentation rates were an order of magnitude higher in Kongsfjorden (reaching 39.7 g m−2 d−1 in December) and increased in autumn, while in Rijpfjorden, they peaked in late winter - early spring (2.9 g m−2 d−1 in February). Such sediment flux patterns might result from the redeposition of sediments from shallower, subtidal areas and were probably connected to autumn/winter storms. According to multivariate analyses, zooplankton in Kongsfjorden were significantly influenced by water temperature, which explained 22% of their variation, and the flux of organic and mineral sediments explaining 15% and 7.8%, respectively; while in Rijpfjorden, it was sea ice (25.3%), water temperature (16.2%), salinity (8.1%), and mineral sedimentation (6.3%). The structure of zooplankton communities in both fjords was similar in winter; in Kongsfjorden, zooplankton kept developing through spring and summer, while in the Arctic Rijpfjorden, the community paused until the onset of phytoplankton bloom and sea ice break-up in summer, to finally achieve, in autumn, a similar species and development stage structure as summer in the Atlantic-influenced fjord. Our study demonstrates how integrating multiple pieces of information can provide key insights into the relations between Atlantification, sediment flux, and zooplankton community, thus helping to assess the functioning of high Arctic ecosystems under climate change conditions. |
format |
Article in Journal/Newspaper |
author |
Weydmann-Zwolicka, Agata Prątnicka, Paula Łącka, Magdalena Majaneva, Sanna Cottier, Finlo Robert Berge, Jørgen |
spellingShingle |
Weydmann-Zwolicka, Agata Prątnicka, Paula Łącka, Magdalena Majaneva, Sanna Cottier, Finlo Robert Berge, Jørgen Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic |
author_facet |
Weydmann-Zwolicka, Agata Prątnicka, Paula Łącka, Magdalena Majaneva, Sanna Cottier, Finlo Robert Berge, Jørgen |
author_sort |
Weydmann-Zwolicka, Agata |
title |
Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic |
title_short |
Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic |
title_full |
Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic |
title_fullStr |
Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic |
title_full_unstemmed |
Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic |
title_sort |
zooplankton and sediment fluxes in two contrasting fjords reveal atlantification of the arctic |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://hdl.handle.net/10037/23656 https://doi.org/10.1016/j.scitotenv.2021.145599 |
long_lat |
ENVELOPE(22.188,22.188,80.165,80.165) |
geographic |
Arctic Rijpfjorden Svalbard |
geographic_facet |
Arctic Rijpfjorden Svalbard |
genre |
Arctic Arctic Climate change Kongsfjord* Kongsfjorden Phytoplankton Rijpfjord* Sea ice Svalbard Zooplankton |
genre_facet |
Arctic Arctic Climate change Kongsfjord* Kongsfjorden Phytoplankton Rijpfjord* Sea ice Svalbard Zooplankton |
op_relation |
Science of the Total Environment info:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change// Weydmann-Zwolicka, Prątnicka, Łącka, Majaneva, Cottier FR, Berge. Zooplankton and sediment fluxes in two contrasting fjords reveal Atlantification of the Arctic. Science of the Total Environment. 2021;773 FRIDAID 1900645 doi:10.1016/j.scitotenv.2021.145599 0048-9697 1879-1026 https://hdl.handle.net/10037/23656 |
op_rights |
openAccess Copyright 2021 The Author(s) |
op_doi |
https://doi.org/10.1016/j.scitotenv.2021.145599 |
container_title |
Science of The Total Environment |
container_volume |
773 |
container_start_page |
145599 |
_version_ |
1766296017746001920 |