Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas
The largest Calanus species in the Nordic Seas is also the copepod for which we have the poorest knowledge. Recent studies have shown that C. hyperboreus is more likely of sub-Arctic rather than Arctic origins, and the Nordic Seas are part of its core distribution areas worldwide. Large size and hig...
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ftimr:oai:imr.brage.unit.no:11250/3014632 2023-05-15T14:59:16+02:00 Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas Aarflot, Johanna Myrseth Hjøllo, Solfrid Sætre Strand, Espen Skogen, Morten D. 2022 application/pdf https://hdl.handle.net/11250/3014632 https://doi.org/10.1016/j.pocean.2022.102761 eng eng Norges forskningsråd: 276730 Norges forskningsråd: 200508 Progress in Oceanography. 2022, 202 . urn:issn:0079-6611 https://hdl.handle.net/11250/3014632 https://doi.org/10.1016/j.pocean.2022.102761 cristin:2027249 15 202 Progress in Oceanography Peer reviewed Journal article 2022 ftimr https://doi.org/10.1016/j.pocean.2022.102761 2022-09-07T22:41:47Z The largest Calanus species in the Nordic Seas is also the copepod for which we have the poorest knowledge. Recent studies have shown that C. hyperboreus is more likely of sub-Arctic rather than Arctic origins, and the Nordic Seas are part of its core distribution areas worldwide. Large size and high fat content makes C. hyperboreus important prey for planktivores, and the Nordic Seas serve as main feeding grounds for a considerable biomass of planktivorous fish. We develop an individual-based model (IBM) based on existing knowledge of growth and life history of C. hyperboreus, and couple the IBM to an ecosystem model system encompassing physics, a nutrients–phytoplankton–zooplankton–detritus (NPZD) model and an IBM of the Atlantic congener C. finmarchicus. Given the main circulation routes in the region, a key question we address in this study is why C. hyperboreus is measured in low abundances in the (presumably) more favourable Norwegian Sea environment. We show that a core population of C. hyperboreus in the Greenland Sea supplies individuals to both the Iceland and Norwegian Seas, and that most copepods will visit more than one of the three regions during their life time. Advective pathways through environmental gradients creates intraspecific variation in development rates as reported by in situ observational studies. Furthermore, our results suggest that low abundances in the Norwegian Sea are more likely controlled by top-down processes (predation) rather than environmental limitations on growth or resource competition with C. finmarchicus. publishedVersion Article in Journal/Newspaper Arctic Greenland Greenland Sea Iceland Nordic Seas Norwegian Sea Phytoplankton Zooplankton Copepods Institute for Marine Research: Brage IMR Arctic Greenland Norwegian Sea Progress in Oceanography 202 102761 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The largest Calanus species in the Nordic Seas is also the copepod for which we have the poorest knowledge. Recent studies have shown that C. hyperboreus is more likely of sub-Arctic rather than Arctic origins, and the Nordic Seas are part of its core distribution areas worldwide. Large size and high fat content makes C. hyperboreus important prey for planktivores, and the Nordic Seas serve as main feeding grounds for a considerable biomass of planktivorous fish. We develop an individual-based model (IBM) based on existing knowledge of growth and life history of C. hyperboreus, and couple the IBM to an ecosystem model system encompassing physics, a nutrients–phytoplankton–zooplankton–detritus (NPZD) model and an IBM of the Atlantic congener C. finmarchicus. Given the main circulation routes in the region, a key question we address in this study is why C. hyperboreus is measured in low abundances in the (presumably) more favourable Norwegian Sea environment. We show that a core population of C. hyperboreus in the Greenland Sea supplies individuals to both the Iceland and Norwegian Seas, and that most copepods will visit more than one of the three regions during their life time. Advective pathways through environmental gradients creates intraspecific variation in development rates as reported by in situ observational studies. Furthermore, our results suggest that low abundances in the Norwegian Sea are more likely controlled by top-down processes (predation) rather than environmental limitations on growth or resource competition with C. finmarchicus. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Aarflot, Johanna Myrseth Hjøllo, Solfrid Sætre Strand, Espen Skogen, Morten D. |
spellingShingle |
Aarflot, Johanna Myrseth Hjøllo, Solfrid Sætre Strand, Espen Skogen, Morten D. Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas |
author_facet |
Aarflot, Johanna Myrseth Hjøllo, Solfrid Sætre Strand, Espen Skogen, Morten D. |
author_sort |
Aarflot, Johanna Myrseth |
title |
Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas |
title_short |
Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas |
title_full |
Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas |
title_fullStr |
Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas |
title_full_unstemmed |
Transportation and predation control structures the distribution of a key calanoid in the Nordic Seas |
title_sort |
transportation and predation control structures the distribution of a key calanoid in the nordic seas |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3014632 https://doi.org/10.1016/j.pocean.2022.102761 |
geographic |
Arctic Greenland Norwegian Sea |
geographic_facet |
Arctic Greenland Norwegian Sea |
genre |
Arctic Greenland Greenland Sea Iceland Nordic Seas Norwegian Sea Phytoplankton Zooplankton Copepods |
genre_facet |
Arctic Greenland Greenland Sea Iceland Nordic Seas Norwegian Sea Phytoplankton Zooplankton Copepods |
op_source |
15 202 Progress in Oceanography |
op_relation |
Norges forskningsråd: 276730 Norges forskningsråd: 200508 Progress in Oceanography. 2022, 202 . urn:issn:0079-6611 https://hdl.handle.net/11250/3014632 https://doi.org/10.1016/j.pocean.2022.102761 cristin:2027249 |
op_doi |
https://doi.org/10.1016/j.pocean.2022.102761 |
container_title |
Progress in Oceanography |
container_volume |
202 |
container_start_page |
102761 |
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1766331379504644096 |