Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus
Sinking of particles is a key mechanism in the transport of organic matter from the ocean’s productive surface layer to the deep sea and sediments, but also constitutes a loss of carbon and growth-limiting nutrients to the pelagic food web. Knowledge on export of particulate phosphorus is limited, p...
Published in: | Marine Ecology Progress Series |
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Online Access: | https://hdl.handle.net/10037/5032 https://doi.org/10.3354/meps09733 |
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ftunivtroemsoe:oai:munin.uit.no:10037/5032 2023-05-15T15:13:25+02:00 Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus Tamelander, Tobias Aubert, Anais Wexels Riser, Christian 2012 https://hdl.handle.net/10037/5032 https://doi.org/10.3354/meps09733 eng eng Inter Research Marine Ecology Progress Series 459(2012) s. 17-28 FRIDAID 916924 http://dx.doi.org/10.3354/meps09733 0171-8630 https://hdl.handle.net/10037/5032 URN:NBN:no-uit_munin_4747 openAccess VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Journal article Tidsskriftartikkel Peer reviewed 2012 ftunivtroemsoe https://doi.org/10.3354/meps09733 2021-06-25T17:53:32Z Sinking of particles is a key mechanism in the transport of organic matter from the ocean’s productive surface layer to the deep sea and sediments, but also constitutes a loss of carbon and growth-limiting nutrients to the pelagic food web. Knowledge on export of particulate phosphorus is limited, particularly in high-latitude regions, in spite of its role as a co-limiting factor in many marine systems. We therefore investigated suspended concentrations and vertical export (by means of sediment traps) of particulate organic carbon (POC), nitrogen (PON) and total particulate phosphorus (TPP) at 3 contrasting sites in the Fram Strait and Barents Sea opening and quantified the contribution of zooplankton faecal pellets to POC, PON and TPP export. The TPP fluxes are the first to be reported from this region and probably the first from the entire Arctic Ocean. The suspended and exported C:N ratios were close to the Redfield ratio and did not differ significantly from each other (mean atomic ratios of 6.1 and 6.3, respectively). The mean C:P of suspended particles (91) was below Redfield, whereas the exported mean (117) exceeded Redfield, indicating more efficient retention of phosphorus than of nitrogen in the water column. Copepod faecal pellets had low C:P ratios and contributed a higher proportion to phosphorus export (mean of 17%) than to carbon and nitrogen export (10%). Faecal pellets may therefore be an important loss factor for phosphorus from the water column compared to slower-sinking material, which is retained more efficiently. Article in Journal/Newspaper Arctic Arctic Ocean Barents Sea Fram Strait Zooplankton University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Barents Sea Marine Ecology Progress Series 459 17 28 |
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::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
spellingShingle |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 Tamelander, Tobias Aubert, Anais Wexels Riser, Christian Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480::Marinbiologi: 497 |
description |
Sinking of particles is a key mechanism in the transport of organic matter from the ocean’s productive surface layer to the deep sea and sediments, but also constitutes a loss of carbon and growth-limiting nutrients to the pelagic food web. Knowledge on export of particulate phosphorus is limited, particularly in high-latitude regions, in spite of its role as a co-limiting factor in many marine systems. We therefore investigated suspended concentrations and vertical export (by means of sediment traps) of particulate organic carbon (POC), nitrogen (PON) and total particulate phosphorus (TPP) at 3 contrasting sites in the Fram Strait and Barents Sea opening and quantified the contribution of zooplankton faecal pellets to POC, PON and TPP export. The TPP fluxes are the first to be reported from this region and probably the first from the entire Arctic Ocean. The suspended and exported C:N ratios were close to the Redfield ratio and did not differ significantly from each other (mean atomic ratios of 6.1 and 6.3, respectively). The mean C:P of suspended particles (91) was below Redfield, whereas the exported mean (117) exceeded Redfield, indicating more efficient retention of phosphorus than of nitrogen in the water column. Copepod faecal pellets had low C:P ratios and contributed a higher proportion to phosphorus export (mean of 17%) than to carbon and nitrogen export (10%). Faecal pellets may therefore be an important loss factor for phosphorus from the water column compared to slower-sinking material, which is retained more efficiently. |
format |
Article in Journal/Newspaper |
author |
Tamelander, Tobias Aubert, Anais Wexels Riser, Christian |
author_facet |
Tamelander, Tobias Aubert, Anais Wexels Riser, Christian |
author_sort |
Tamelander, Tobias |
title |
Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
title_short |
Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
title_full |
Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
title_fullStr |
Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
title_full_unstemmed |
Export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
title_sort |
export stoichiometry and contribution of copepod faecal pellets to vertical flux of particulate organic carbon, nitrogen and phosphorus |
publisher |
Inter Research |
publishDate |
2012 |
url |
https://hdl.handle.net/10037/5032 https://doi.org/10.3354/meps09733 |
geographic |
Arctic Arctic Ocean Barents Sea |
geographic_facet |
Arctic Arctic Ocean Barents Sea |
genre |
Arctic Arctic Ocean Barents Sea Fram Strait Zooplankton |
genre_facet |
Arctic Arctic Ocean Barents Sea Fram Strait Zooplankton |
op_relation |
Marine Ecology Progress Series 459(2012) s. 17-28 FRIDAID 916924 http://dx.doi.org/10.3354/meps09733 0171-8630 https://hdl.handle.net/10037/5032 URN:NBN:no-uit_munin_4747 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.3354/meps09733 |
container_title |
Marine Ecology Progress Series |
container_volume |
459 |
container_start_page |
17 |
op_container_end_page |
28 |
_version_ |
1766343975706296320 |