Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period
Up to 95% of the oceanic primary production is recycled within the upper few hundred meters of the water column. Marine snow and zooplankton fecal pellets in the upper water column are often recycled at rates exceeding those measured for microbial degradation, suggesting that zooplankton might be im...
Published in: | Frontiers in Marine Science |
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Online Access: | https://hdl.handle.net/10037/19705 https://doi.org/10.3389/fmars.2020.543124 |
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ftunivtroemsoe:oai:munin.uit.no:10037/19705 2023-05-15T14:26:08+02:00 Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period van der Jagt, Helga Wiedmann, Ingrid Hildebrandt, Nicole Niehoff, Barbara Iversen, Morten H. 2020-09-24 https://hdl.handle.net/10037/19705 https://doi.org/10.3389/fmars.2020.543124 eng eng Frontiers Media Frontiers in Marine Science info:eu-repo/grantAgreement/RCN/?/228107/?/?/?/ van der Jagt, Wiedmann, Hildebrandt, Niehoff, Iversen. Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period. Frontiers in Marine Science. 2020;7 FRIDAID 1833191 doi:10.3389/fmars.2020.543124 2296-7745 https://hdl.handle.net/10037/19705 openAccess Copyright 2020 The Author(s) VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Journal article Tidsskriftartikkel Peer reviewed publishedVersion 2020 ftunivtroemsoe https://doi.org/10.3389/fmars.2020.543124 2021-06-25T17:57:46Z Up to 95% of the oceanic primary production is recycled within the upper few hundred meters of the water column. Marine snow and zooplankton fecal pellets in the upper water column are often recycled at rates exceeding those measured for microbial degradation, suggesting that zooplankton might be important for flux attenuation of particulate organic carbon in the upper ocean. However, direct evidence for interactions between zooplankton and settling aggregates are still rare. We investigated the importance of zooplankton aggregate feeding for carbon flux attenuation in the upper ocean by determining aggregate ingestion rates and feeding behavior on settling aggregates by the dominant Arctic filter-feeding copepods Calanus spp. and Pseudocalanus spp. Both genera were observed to detect and feed on settling aggregates. Using in situ zooplankton and aggregate abundances in combination with the measured aggregate feeding rates, we calculated that 60–67% of the total carbon flux attenuation at three Arctic locations could be explained by Calanus spp. and Pseudocalanus spp. aggregate feeding alone. When including microbial degradation of the settling aggregates, we could explain up to 77% of the total carbon flux attenuation. Our results suggest that by directly ingesting and fragmenting settling marine snow, mesozooplankton are key organisms for flux attenuation in Arctic waters. Article in Journal/Newspaper Arctic Arctic Zooplankton Copepods University of Tromsø: Munin Open Research Archive Arctic Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 van der Jagt, Helga Wiedmann, Ingrid Hildebrandt, Nicole Niehoff, Barbara Iversen, Morten H. Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Up to 95% of the oceanic primary production is recycled within the upper few hundred meters of the water column. Marine snow and zooplankton fecal pellets in the upper water column are often recycled at rates exceeding those measured for microbial degradation, suggesting that zooplankton might be important for flux attenuation of particulate organic carbon in the upper ocean. However, direct evidence for interactions between zooplankton and settling aggregates are still rare. We investigated the importance of zooplankton aggregate feeding for carbon flux attenuation in the upper ocean by determining aggregate ingestion rates and feeding behavior on settling aggregates by the dominant Arctic filter-feeding copepods Calanus spp. and Pseudocalanus spp. Both genera were observed to detect and feed on settling aggregates. Using in situ zooplankton and aggregate abundances in combination with the measured aggregate feeding rates, we calculated that 60–67% of the total carbon flux attenuation at three Arctic locations could be explained by Calanus spp. and Pseudocalanus spp. aggregate feeding alone. When including microbial degradation of the settling aggregates, we could explain up to 77% of the total carbon flux attenuation. Our results suggest that by directly ingesting and fragmenting settling marine snow, mesozooplankton are key organisms for flux attenuation in Arctic waters. |
format |
Article in Journal/Newspaper |
author |
van der Jagt, Helga Wiedmann, Ingrid Hildebrandt, Nicole Niehoff, Barbara Iversen, Morten H. |
author_facet |
van der Jagt, Helga Wiedmann, Ingrid Hildebrandt, Nicole Niehoff, Barbara Iversen, Morten H. |
author_sort |
van der Jagt, Helga |
title |
Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period |
title_short |
Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period |
title_full |
Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period |
title_fullStr |
Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period |
title_full_unstemmed |
Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period |
title_sort |
aggregate feeding by the copepods calanus and pseudocalanus controls carbon flux attenuation in the arctic shelf sea during the productive period |
publisher |
Frontiers Media |
publishDate |
2020 |
url |
https://hdl.handle.net/10037/19705 https://doi.org/10.3389/fmars.2020.543124 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Zooplankton Copepods |
genre_facet |
Arctic Arctic Zooplankton Copepods |
op_relation |
Frontiers in Marine Science info:eu-repo/grantAgreement/RCN/?/228107/?/?/?/ van der Jagt, Wiedmann, Hildebrandt, Niehoff, Iversen. Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period. Frontiers in Marine Science. 2020;7 FRIDAID 1833191 doi:10.3389/fmars.2020.543124 2296-7745 https://hdl.handle.net/10037/19705 |
op_rights |
openAccess Copyright 2020 The Author(s) |
op_doi |
https://doi.org/10.3389/fmars.2020.543124 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
_version_ |
1766298616052318208 |