Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea
Increasing contributions of prymnesiophytes such as Phaeocystis pouchetii and Emiliania huxleyi to Barents Sea (BS) phytoplankton production have been suggested based on in situ observations of phytoplankton community composition, but the scattered and discontinuous nature of these records confounds...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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2020
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Online Access: | https://pure.uhi.ac.uk/en/publications/4f9ed051-a2f5-40dd-822b-d64845fb94f3 https://doi.org/10.1098/rsta.2019.0357 https://pureadmin.uhi.ac.uk/ws/files/14216185/Orkney_et_al_2020.pdf |
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ftuhipublicatio:oai:pure.atira.dk:publications/4f9ed051-a2f5-40dd-822b-d64845fb94f3 2024-09-15T17:57:51+00:00 Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea Orkney, Andrew Platt, Trevor Narayanaswamy, Bhavani Kostakis, Ina Bouman, Heather 2020-10-02 application/pdf https://pure.uhi.ac.uk/en/publications/4f9ed051-a2f5-40dd-822b-d64845fb94f3 https://doi.org/10.1098/rsta.2019.0357 https://pureadmin.uhi.ac.uk/ws/files/14216185/Orkney_et_al_2020.pdf eng eng https://pure.uhi.ac.uk/en/publications/4f9ed051-a2f5-40dd-822b-d64845fb94f3 info:eu-repo/semantics/openAccess Orkney , A , Platt , T , Narayanaswamy , B , Kostakis , I & Bouman , H 2020 , ' Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea ' , Philosophical Transactions of the Royal Society of London Series A-Mathematical, Physical and Engineering Sciences , vol. 378 , no. 2181 . https://doi.org/10.1098/rsta.2019.0357 climate phaeocystis remote-sensing ocean-colour phytoplankton Arctic article 2020 ftuhipublicatio https://doi.org/10.1098/rsta.2019.0357 2024-07-29T23:37:15Z Increasing contributions of prymnesiophytes such as Phaeocystis pouchetii and Emiliania huxleyi to Barents Sea (BS) phytoplankton production have been suggested based on in situ observations of phytoplankton community composition, but the scattered and discontinuous nature of these records confounds simple inference of community change or its relationship to salient environmental variables. However, provided that meaningful assessments of phytoplankton community composition can be inferred based on their optical characteristics, ocean-colour records offer a potential means to develop a synthesis between sporadic in situ observations. Existing remote-sensing algorithms to retrieve phytoplankton functional types based on chlorophyll-a (chl-a) concentration or indices of pigment packaging may, however, fail to distinguish Phaeocystis from other blooms of phytoplankton with high pigment packaging, such as diatoms. We develop a novel algorithm to distinguish major phytoplankton functional types in the BS and apply it to the MODIS-Aqua ocean-colour record, to study changes in the composition of BS phytoplankton blooms in July, between 2002 and 2018, creating time series of the spatial distribution and intensity of coccolithophore, diatom and Phaeocystis blooms. We confirm a north-eastward expansion in coccolithophore bloom distribution, identified in previous studies, and suggest an inferred increase in chl-a concentrations, reported by previous researchers, may be partly explained by increasing frequencies of Phaeocystis blooms. Article in Journal/Newspaper Barents Sea Phytoplankton University of the Highlands and Islands: Research Database of UHI Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378 2181 20190357 |
institution |
Open Polar |
collection |
University of the Highlands and Islands: Research Database of UHI |
op_collection_id |
ftuhipublicatio |
language |
English |
topic |
climate phaeocystis remote-sensing ocean-colour phytoplankton Arctic |
spellingShingle |
climate phaeocystis remote-sensing ocean-colour phytoplankton Arctic Orkney, Andrew Platt, Trevor Narayanaswamy, Bhavani Kostakis, Ina Bouman, Heather Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea |
topic_facet |
climate phaeocystis remote-sensing ocean-colour phytoplankton Arctic |
description |
Increasing contributions of prymnesiophytes such as Phaeocystis pouchetii and Emiliania huxleyi to Barents Sea (BS) phytoplankton production have been suggested based on in situ observations of phytoplankton community composition, but the scattered and discontinuous nature of these records confounds simple inference of community change or its relationship to salient environmental variables. However, provided that meaningful assessments of phytoplankton community composition can be inferred based on their optical characteristics, ocean-colour records offer a potential means to develop a synthesis between sporadic in situ observations. Existing remote-sensing algorithms to retrieve phytoplankton functional types based on chlorophyll-a (chl-a) concentration or indices of pigment packaging may, however, fail to distinguish Phaeocystis from other blooms of phytoplankton with high pigment packaging, such as diatoms. We develop a novel algorithm to distinguish major phytoplankton functional types in the BS and apply it to the MODIS-Aqua ocean-colour record, to study changes in the composition of BS phytoplankton blooms in July, between 2002 and 2018, creating time series of the spatial distribution and intensity of coccolithophore, diatom and Phaeocystis blooms. We confirm a north-eastward expansion in coccolithophore bloom distribution, identified in previous studies, and suggest an inferred increase in chl-a concentrations, reported by previous researchers, may be partly explained by increasing frequencies of Phaeocystis blooms. |
format |
Article in Journal/Newspaper |
author |
Orkney, Andrew Platt, Trevor Narayanaswamy, Bhavani Kostakis, Ina Bouman, Heather |
author_facet |
Orkney, Andrew Platt, Trevor Narayanaswamy, Bhavani Kostakis, Ina Bouman, Heather |
author_sort |
Orkney, Andrew |
title |
Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea |
title_short |
Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea |
title_full |
Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea |
title_fullStr |
Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea |
title_full_unstemmed |
Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea |
title_sort |
bio-optical evidence for increasing phaeocystis dominance in the barents sea |
publishDate |
2020 |
url |
https://pure.uhi.ac.uk/en/publications/4f9ed051-a2f5-40dd-822b-d64845fb94f3 https://doi.org/10.1098/rsta.2019.0357 https://pureadmin.uhi.ac.uk/ws/files/14216185/Orkney_et_al_2020.pdf |
genre |
Barents Sea Phytoplankton |
genre_facet |
Barents Sea Phytoplankton |
op_source |
Orkney , A , Platt , T , Narayanaswamy , B , Kostakis , I & Bouman , H 2020 , ' Bio-Optical evidence for increasing Phaeocystis dominance in the Barents Sea ' , Philosophical Transactions of the Royal Society of London Series A-Mathematical, Physical and Engineering Sciences , vol. 378 , no. 2181 . https://doi.org/10.1098/rsta.2019.0357 |
op_relation |
https://pure.uhi.ac.uk/en/publications/4f9ed051-a2f5-40dd-822b-d64845fb94f3 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1098/rsta.2019.0357 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
378 |
container_issue |
2181 |
container_start_page |
20190357 |
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1810434055990149120 |