Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago
Phytoplankton contribute half of the primary production (PP) in the biosphere and are the major source of energy for the Arctic Ocean ecosystem. While PP measurements are therefore fundamental to our understanding of marine biogeochemical cycling, the extent to which current methods provide a defini...
Published in: | Frontiers in Marine Science |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hdl.handle.net/10037/17486 https://doi.org/10.3389/fmars.2019.00468 |
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ftunivtroemsoe:oai:munin.uit.no:10037/17486 2023-05-15T14:23:59+02:00 Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago Sanz-Martín, Marina Vernet, Maria Cape, Mattias R. Cano, Elena M Delgado-Huertas, Antonio Reigstad, Marit Wassmann, Paul Duarte, Carlos M. 2019-08-02 https://hdl.handle.net/10037/17486 https://doi.org/10.3389/fmars.2019.00468 eng eng Frontiers Media Frontiers in Marine Science info:eu-repo/grantAgreement/RCN/POLARPROG/226415/Norway/Bridging marine productivity regimes: How Atlantic advection affects productivity, carbon cycling and export in a melting Arctic Ocean// Sanz-Martín M, Vernet M, Cape MR, Cano, Delgado-Huertas A, Reigstad M, Wassmann PFJ, Duarte CM. Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago. Frontiers in Marine Science. 2019;6 FRIDAID 1746127 doi:10.3389/fmars.2019.00468 2296-7745 https://hdl.handle.net/10037/17486 openAccess Copyright 2019 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 2019 ftunivtroemsoe https://doi.org/10.3389/fmars.2019.00468 2021-06-25T17:57:03Z Phytoplankton contribute half of the primary production (PP) in the biosphere and are the major source of energy for the Arctic Ocean ecosystem. While PP measurements are therefore fundamental to our understanding of marine biogeochemical cycling, the extent to which current methods provide a definitive estimate of this process remains uncertain given differences in their underlying approaches, and assumptions. This is especially the case in the Arctic Ocean, a region of the planet undergoing rapid evolution as a result of climate change, yet where PP measurements are sparse. In this study, we compared three common methods for estimating PP in the European Arctic Ocean: (1) production of 18 O-labeled oxygen (GPP- 18 O), (2) changes in dissolved oxygen (GPP-DO), and (3) incorporation rates of 14 C-labeled carbon into particulate organic carbon ( 14 C-POC) and into total organic carbon ( 14 C-TOC, the sum of dissolved and particulate organic carbon). Results show that PP rates derived using oxygen methods showed good agreement across season and were strongly positively correlated. While also strongly correlated, higher scatter associated with seasonal changes was observed between 14 C-POC and 14 C-TOC. The 14 C-TOC-derived rates were, on average, approximately 50% of the oxygen-based estimates. However, the relationship between these estimates changed seasonally. In May, during a spring bloom of Phaeocystis sp., 14 C-TOC was 52% and 50% of GPP-DO, and GPP- 18 O, respectively, while in August, during post-bloom conditions dominated by flagellates, 14 C-TOC was 125% of GPP-DO, and 14 C-TOC was 175% of GPP- 18 O. Varying relationship between C and O rates may be the result of varying importance of respiration, where C-based rates estimate net primary production (NPP) and O-based rates estimate gross primary production (GPP). However, uncertainty remains in this comparison, given differing assumptions of the methods and the photosynthetic quotients. The median O:C ratio of 4.75 in May is within the range of that observed for other regions of the world’s ocean. However, the median O:C ratio for August is <1, lower than in any other reported region. Our results suggest further research is needed to estimate O:C in Arctic waters, and at different times of the seasonal cycle. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Climate change Phytoplankton Svalbard University of Tromsø: Munin Open Research Archive Arctic Arctic Ocean Svalbard Svalbard Archipelago Frontiers in Marine Science 6 |
institution |
Open Polar |
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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 Sanz-Martín, Marina Vernet, Maria Cape, Mattias R. Cano, Elena M Delgado-Huertas, Antonio Reigstad, Marit Wassmann, Paul Duarte, Carlos M. Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago |
topic_facet |
VDP::Mathematics and natural science: 400::Zoology and botany: 480 VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Phytoplankton contribute half of the primary production (PP) in the biosphere and are the major source of energy for the Arctic Ocean ecosystem. While PP measurements are therefore fundamental to our understanding of marine biogeochemical cycling, the extent to which current methods provide a definitive estimate of this process remains uncertain given differences in their underlying approaches, and assumptions. This is especially the case in the Arctic Ocean, a region of the planet undergoing rapid evolution as a result of climate change, yet where PP measurements are sparse. In this study, we compared three common methods for estimating PP in the European Arctic Ocean: (1) production of 18 O-labeled oxygen (GPP- 18 O), (2) changes in dissolved oxygen (GPP-DO), and (3) incorporation rates of 14 C-labeled carbon into particulate organic carbon ( 14 C-POC) and into total organic carbon ( 14 C-TOC, the sum of dissolved and particulate organic carbon). Results show that PP rates derived using oxygen methods showed good agreement across season and were strongly positively correlated. While also strongly correlated, higher scatter associated with seasonal changes was observed between 14 C-POC and 14 C-TOC. The 14 C-TOC-derived rates were, on average, approximately 50% of the oxygen-based estimates. However, the relationship between these estimates changed seasonally. In May, during a spring bloom of Phaeocystis sp., 14 C-TOC was 52% and 50% of GPP-DO, and GPP- 18 O, respectively, while in August, during post-bloom conditions dominated by flagellates, 14 C-TOC was 125% of GPP-DO, and 14 C-TOC was 175% of GPP- 18 O. Varying relationship between C and O rates may be the result of varying importance of respiration, where C-based rates estimate net primary production (NPP) and O-based rates estimate gross primary production (GPP). However, uncertainty remains in this comparison, given differing assumptions of the methods and the photosynthetic quotients. The median O:C ratio of 4.75 in May is within the range of that observed for other regions of the world’s ocean. However, the median O:C ratio for August is <1, lower than in any other reported region. Our results suggest further research is needed to estimate O:C in Arctic waters, and at different times of the seasonal cycle. |
format |
Article in Journal/Newspaper |
author |
Sanz-Martín, Marina Vernet, Maria Cape, Mattias R. Cano, Elena M Delgado-Huertas, Antonio Reigstad, Marit Wassmann, Paul Duarte, Carlos M. |
author_facet |
Sanz-Martín, Marina Vernet, Maria Cape, Mattias R. Cano, Elena M Delgado-Huertas, Antonio Reigstad, Marit Wassmann, Paul Duarte, Carlos M. |
author_sort |
Sanz-Martín, Marina |
title |
Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago |
title_short |
Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago |
title_full |
Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago |
title_fullStr |
Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago |
title_full_unstemmed |
Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago |
title_sort |
relationship between carbon- and oxygen-based primary productivity in the arctic ocean, svalbard archipelago |
publisher |
Frontiers Media |
publishDate |
2019 |
url |
https://hdl.handle.net/10037/17486 https://doi.org/10.3389/fmars.2019.00468 |
geographic |
Arctic Arctic Ocean Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Arctic Ocean Svalbard Svalbard Archipelago |
genre |
Arctic Arctic Arctic Ocean Climate change Phytoplankton Svalbard |
genre_facet |
Arctic Arctic Arctic Ocean Climate change Phytoplankton Svalbard |
op_relation |
Frontiers in Marine Science info:eu-repo/grantAgreement/RCN/POLARPROG/226415/Norway/Bridging marine productivity regimes: How Atlantic advection affects productivity, carbon cycling and export in a melting Arctic Ocean// Sanz-Martín M, Vernet M, Cape MR, Cano, Delgado-Huertas A, Reigstad M, Wassmann PFJ, Duarte CM. Relationship between carbon- and oxygen-based primary productivity in the Arctic Ocean, svalbard archipelago. Frontiers in Marine Science. 2019;6 FRIDAID 1746127 doi:10.3389/fmars.2019.00468 2296-7745 https://hdl.handle.net/10037/17486 |
op_rights |
openAccess Copyright 2019 The Author(s) |
op_doi |
https://doi.org/10.3389/fmars.2019.00468 |
container_title |
Frontiers in Marine Science |
container_volume |
6 |
_version_ |
1766296431237267456 |