Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean"
Subsurface chlorophyll maximum (SCM) layers are prevalent throughout the Arctic Ocean under stratified conditions and are observed both in the wake of retreating sea ice and in thermally stratified waters. The importance of these layers on the overall productivity of Arctic pelagic ecosystems has be...
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ftdatacite:10.6084/m9.figshare.c.5053403 2023-05-15T14:53:07+02:00 Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" Bouman, Heather A. Jackson, Thomas Sathyendranath, Shubha Platt, Trevor 2020 https://dx.doi.org/10.6084/m9.figshare.c.5053403 https://rs.figshare.com/collections/Supplementary_material_from_Vertical_structure_in_chlorophyll_profiles_influence_on_primary_production_in_the_Arctic_Ocean_/5053403 unknown The Royal Society https://dx.doi.org/10.1098/rsta.2019.0351 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 CC-BY Geochemistry FOS Earth and related environmental sciences Oceanography Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5053403 https://doi.org/10.1098/rsta.2019.0351 2021-11-05T12:55:41Z Subsurface chlorophyll maximum (SCM) layers are prevalent throughout the Arctic Ocean under stratified conditions and are observed both in the wake of retreating sea ice and in thermally stratified waters. The importance of these layers on the overall productivity of Arctic pelagic ecosystems has been a source of debate. In this study, we consider the three principal factors that govern productivity within SCMs: the shape of the chlorophyll profile, the photophysiological characteristics of phytoplankton and the availability of light in the layer. Using the information on the biological and optical parameters describing the vertical structure of chlorophyll, phytoplankton absorption and photosynthesis–irradiance response curves, a spectrally resolved model of primary production is used to identify the set of conditions under which SCMs are important contributors to water-column productivity. Sensitivity analysis revealed systematic errors in the estimation of primary production when the vertical distribution of chlorophyll was not taken into account, with estimates of water-column production using a non-uniform profile being up to 97% higher than those computed using a uniform one. The relative errors were shown to be functions of the parameters describing the shape of the biomass profile and the light available at the SCM to support photosynthesis. Given that SCM productivity is believed to be largely supported by new nutrients, it is likely that the relative contribution of SCMs to new production would be significantly higher than that to gross primary production. We discuss the biogeochemical and ecological implications of these findings and the potential role of new ocean sensors and autonomous underwater vehicles in furthering the study of SCMs in such highly heterogeneous and remote marine ecosystems.This article is part of the theme issue ‘The Changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems'. Article in Journal/Newspaper Arctic Arctic Ocean Phytoplankton Sea ice DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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language |
unknown |
topic |
Geochemistry FOS Earth and related environmental sciences Oceanography |
spellingShingle |
Geochemistry FOS Earth and related environmental sciences Oceanography Bouman, Heather A. Jackson, Thomas Sathyendranath, Shubha Platt, Trevor Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" |
topic_facet |
Geochemistry FOS Earth and related environmental sciences Oceanography |
description |
Subsurface chlorophyll maximum (SCM) layers are prevalent throughout the Arctic Ocean under stratified conditions and are observed both in the wake of retreating sea ice and in thermally stratified waters. The importance of these layers on the overall productivity of Arctic pelagic ecosystems has been a source of debate. In this study, we consider the three principal factors that govern productivity within SCMs: the shape of the chlorophyll profile, the photophysiological characteristics of phytoplankton and the availability of light in the layer. Using the information on the biological and optical parameters describing the vertical structure of chlorophyll, phytoplankton absorption and photosynthesis–irradiance response curves, a spectrally resolved model of primary production is used to identify the set of conditions under which SCMs are important contributors to water-column productivity. Sensitivity analysis revealed systematic errors in the estimation of primary production when the vertical distribution of chlorophyll was not taken into account, with estimates of water-column production using a non-uniform profile being up to 97% higher than those computed using a uniform one. The relative errors were shown to be functions of the parameters describing the shape of the biomass profile and the light available at the SCM to support photosynthesis. Given that SCM productivity is believed to be largely supported by new nutrients, it is likely that the relative contribution of SCMs to new production would be significantly higher than that to gross primary production. We discuss the biogeochemical and ecological implications of these findings and the potential role of new ocean sensors and autonomous underwater vehicles in furthering the study of SCMs in such highly heterogeneous and remote marine ecosystems.This article is part of the theme issue ‘The Changing Arctic Ocean: consequences for biological communities, biogeochemical processes and ecosystems'. |
format |
Article in Journal/Newspaper |
author |
Bouman, Heather A. Jackson, Thomas Sathyendranath, Shubha Platt, Trevor |
author_facet |
Bouman, Heather A. Jackson, Thomas Sathyendranath, Shubha Platt, Trevor |
author_sort |
Bouman, Heather A. |
title |
Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" |
title_short |
Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" |
title_full |
Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" |
title_fullStr |
Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" |
title_full_unstemmed |
Supplementary material from "Vertical structure in chlorophyll profiles: influence on primary production in the Arctic Ocean" |
title_sort |
supplementary material from "vertical structure in chlorophyll profiles: influence on primary production in the arctic ocean" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5053403 https://rs.figshare.com/collections/Supplementary_material_from_Vertical_structure_in_chlorophyll_profiles_influence_on_primary_production_in_the_Arctic_Ocean_/5053403 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean Phytoplankton Sea ice |
genre_facet |
Arctic Arctic Ocean Phytoplankton Sea ice |
op_relation |
https://dx.doi.org/10.1098/rsta.2019.0351 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode CC-BY-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5053403 https://doi.org/10.1098/rsta.2019.0351 |
_version_ |
1766324533519712256 |