Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea
We defined mesozooplankton biogeography in the North American Arctic to elucidate drivers of biodiversity, community structure, and biomass of this key component of the Arctic marine ecosystem. A multivariate analysis identified four mesozooplankton assemblages: Arctic-oceanic, Arctic-shelf, Coastal...
Published in: | Elementa: Science of the Anthropocene |
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Language: | English |
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University of California Press
2022
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Online Access: | https://hdl.handle.net/10037/28215 https://doi.org/10.1525/elementa.2022.00053 |
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ftunivtroemsoe:oai:munin.uit.no:10037/28215 2023-05-15T13:22:57+02:00 Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea Darnis, Gérald Geoffroy, Maxime Dezutter, Thibaud Aubry, Cyril Massicotte, Philippe Brown, Tanya Babin, Marcel Cote, David Fortier, Louis 2022-11-09 https://hdl.handle.net/10037/28215 https://doi.org/10.1525/elementa.2022.00053 eng eng University of California Press Elementa: Science of the Anthropocene Darnis G, Geoffroy M, Dezutter T, Aubry C, Massicotte P, Brown T, Babin M, Cote D, Fortier L. Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea . Elementa: Science of the Anthropocene. 2022;10(1) FRIDAID 2104147 doi:10.1525/elementa.2022.00053 2325-1026 https://hdl.handle.net/10037/28215 Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2022 The Author(s) https://creativecommons.org/licenses/by/4.0 CC-BY Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2022 ftunivtroemsoe https://doi.org/10.1525/elementa.2022.00053 2023-01-19T00:03:03Z We defined mesozooplankton biogeography in the North American Arctic to elucidate drivers of biodiversity, community structure, and biomass of this key component of the Arctic marine ecosystem. A multivariate analysis identified four mesozooplankton assemblages: Arctic-oceanic, Arctic-shelf, Coastal-Hudson, and Labrador Sea. Bathymetry was a major driver of the distribution of these assemblages. In shallow waters, Cirripedia and the copepod Pseudocalanus spp. dominated the Coastal-Hudson and Arctic-shelf assemblages, which showed low species richness (19) and biomass (0.28 and 1.49 g C m -2 , respectively).The Arctic-oceanic assemblage occupied the entire North American Arctic, except for shallow breaks in the Canadian Arctic Archipelago downstream of sills blocking the Atlantic Water layer circulation below a depth of 200 m. This assemblage showed high copepod biomass (4.74 g C m -2 ) with a high share of Calanus hyperboreus, C. glacialis, and Metridia longa. In habitats below 200-m depth, C. hyperboreus represented 68% of the copepod biomass, underscoring its role as a keystone species in this ecosystem. Strong numerical representation by the borealAtlantic C. finmarchicus and Oithona atlantica stressed the strong Atlantic influence on the subarctic Labrador Sea assemblage on the northwestern Labrador Sea slope. The mixed Arctic-Atlantic composition of the Labrador Sea mesozooplankton resulted in high species richness (58) and biomass (5.73 g C m -2 ). The low abundance of Atlantic and Pacific taxa in the areas influenced by Arctic currents did not alter the Arctic status of the Arctic-oceanic, Arctic-shelf, and Coastal-Hudson assemblages.This study identifies hotspots of mesozooplankton biomass and diversity in Central Amundsen Gulf, Lancaster Sound, North Water Polynya and Baffin Bay, known for their high biological productivity and concentrations of vertebrate predators. The continental-scale zooplankton mapping furthers our understanding of the importance of bathymetry and ocean circulation for ecological ... Article in Journal/Newspaper Amundsen Gulf Arctic Arctic Archipelago Arctic Baffin Bay Baffin Bay Baffin Calanus hyperboreus Canadian Arctic Archipelago Chukchi Chukchi Sea Labrador Sea Lancaster Sound Subarctic Zooplankton University of Tromsø: Munin Open Research Archive Arctic Baffin Bay Canadian Arctic Archipelago Chukchi Sea Hudson Lancaster Sound ENVELOPE(-83.999,-83.999,74.218,74.218) Pacific Elementa: Science of the Anthropocene 10 1 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
description |
We defined mesozooplankton biogeography in the North American Arctic to elucidate drivers of biodiversity, community structure, and biomass of this key component of the Arctic marine ecosystem. A multivariate analysis identified four mesozooplankton assemblages: Arctic-oceanic, Arctic-shelf, Coastal-Hudson, and Labrador Sea. Bathymetry was a major driver of the distribution of these assemblages. In shallow waters, Cirripedia and the copepod Pseudocalanus spp. dominated the Coastal-Hudson and Arctic-shelf assemblages, which showed low species richness (19) and biomass (0.28 and 1.49 g C m -2 , respectively).The Arctic-oceanic assemblage occupied the entire North American Arctic, except for shallow breaks in the Canadian Arctic Archipelago downstream of sills blocking the Atlantic Water layer circulation below a depth of 200 m. This assemblage showed high copepod biomass (4.74 g C m -2 ) with a high share of Calanus hyperboreus, C. glacialis, and Metridia longa. In habitats below 200-m depth, C. hyperboreus represented 68% of the copepod biomass, underscoring its role as a keystone species in this ecosystem. Strong numerical representation by the borealAtlantic C. finmarchicus and Oithona atlantica stressed the strong Atlantic influence on the subarctic Labrador Sea assemblage on the northwestern Labrador Sea slope. The mixed Arctic-Atlantic composition of the Labrador Sea mesozooplankton resulted in high species richness (58) and biomass (5.73 g C m -2 ). The low abundance of Atlantic and Pacific taxa in the areas influenced by Arctic currents did not alter the Arctic status of the Arctic-oceanic, Arctic-shelf, and Coastal-Hudson assemblages.This study identifies hotspots of mesozooplankton biomass and diversity in Central Amundsen Gulf, Lancaster Sound, North Water Polynya and Baffin Bay, known for their high biological productivity and concentrations of vertebrate predators. The continental-scale zooplankton mapping furthers our understanding of the importance of bathymetry and ocean circulation for ecological ... |
format |
Article in Journal/Newspaper |
author |
Darnis, Gérald Geoffroy, Maxime Dezutter, Thibaud Aubry, Cyril Massicotte, Philippe Brown, Tanya Babin, Marcel Cote, David Fortier, Louis |
spellingShingle |
Darnis, Gérald Geoffroy, Maxime Dezutter, Thibaud Aubry, Cyril Massicotte, Philippe Brown, Tanya Babin, Marcel Cote, David Fortier, Louis Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea |
author_facet |
Darnis, Gérald Geoffroy, Maxime Dezutter, Thibaud Aubry, Cyril Massicotte, Philippe Brown, Tanya Babin, Marcel Cote, David Fortier, Louis |
author_sort |
Darnis, Gérald |
title |
Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea |
title_short |
Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea |
title_full |
Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea |
title_fullStr |
Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea |
title_full_unstemmed |
Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea |
title_sort |
zooplankton assemblages along the north american arctic: ecological connectivity shaped by ocean circulation and bathymetry from the chukchi sea to labrador sea |
publisher |
University of California Press |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/28215 https://doi.org/10.1525/elementa.2022.00053 |
long_lat |
ENVELOPE(-83.999,-83.999,74.218,74.218) |
geographic |
Arctic Baffin Bay Canadian Arctic Archipelago Chukchi Sea Hudson Lancaster Sound Pacific |
geographic_facet |
Arctic Baffin Bay Canadian Arctic Archipelago Chukchi Sea Hudson Lancaster Sound Pacific |
genre |
Amundsen Gulf Arctic Arctic Archipelago Arctic Baffin Bay Baffin Bay Baffin Calanus hyperboreus Canadian Arctic Archipelago Chukchi Chukchi Sea Labrador Sea Lancaster Sound Subarctic Zooplankton |
genre_facet |
Amundsen Gulf Arctic Arctic Archipelago Arctic Baffin Bay Baffin Bay Baffin Calanus hyperboreus Canadian Arctic Archipelago Chukchi Chukchi Sea Labrador Sea Lancaster Sound Subarctic Zooplankton |
op_relation |
Elementa: Science of the Anthropocene Darnis G, Geoffroy M, Dezutter T, Aubry C, Massicotte P, Brown T, Babin M, Cote D, Fortier L. Zooplankton assemblages along the North American Arctic: Ecological connectivity shaped by ocean circulation and bathymetry from the Chukchi Sea to Labrador Sea . Elementa: Science of the Anthropocene. 2022;10(1) FRIDAID 2104147 doi:10.1525/elementa.2022.00053 2325-1026 https://hdl.handle.net/10037/28215 |
op_rights |
Attribution 4.0 International (CC BY 4.0) openAccess Copyright 2022 The Author(s) https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1525/elementa.2022.00053 |
container_title |
Elementa: Science of the Anthropocene |
container_volume |
10 |
container_issue |
1 |
_version_ |
1766368122167623680 |