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Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010

Ertugrul Agirbas, Victor Martinez-Vicente, Robert J. W. Brewin, Marie-Fanny Racault, Ruth Airs, Carole Llewellyn

Journal of Marine Systems, Volume: 150, Pages: 56 - 65

Swansea University Author: Carole Llewellyn

DOI (Published version): 10.1016/j.jmarsys.2015.05.008

Abstract

Phytoplankton total chlorophyll concentration (TCHLa) and phytoplankton size structure are two important ecological indicators in biological oceanography. Using high performance liquid chromatography (HPLC) pigment data, collected from surface waters along the Atlantic Meridional Transect (AMT), we...

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Published in: Journal of Marine Systems
Published: 2015
URI: https://cronfa.swan.ac.uk/Record/cronfa22015
first_indexed 2015-06-12T02:06:51Z
last_indexed 2018-02-09T05:00:03Z
id cronfa22015
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spelling 2016-02-11T13:43:12.9917265 v2 22015 2015-06-11 Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010 bcd94bda79ebf4c2c82d82dfb027a140 Carole Llewellyn Carole Llewellyn true false 2015-06-11 BGPS Phytoplankton total chlorophyll concentration (TCHLa) and phytoplankton size structure are two important ecological indicators in biological oceanography. Using high performance liquid chromatography (HPLC) pigment data, collected from surface waters along the Atlantic Meridional Transect (AMT), we examine temporal changes in TCHLa and phytoplankton size class (PSC: micro-, nano- and pico-phytoplankton) between 2003 and 2010 (September to November cruises only), in three ecological provinces of the Atlantic Ocean. The HPLC data indicate no significant change in TCHLa in northern and equatorial provinces, and an increase in the southern province. These changes were not significantly different to changes in TCHLa derived using satellite ocean-colour data over the same study period. Despite no change in AMT TCHLa in northern and equatorial provinces, significant differences in PSC were observed, related to changes in key diagnostic pigments (fucoxanthin, peridinin, 19’-hexanoyloxyfucoxanthin and zeaxanthin), with an increase in small cells (nano- and pico-phytoplankton) and a decrease in larger cells (micro-phytoplankton). When fitting a three-component model of phytoplankton size structure ̶ designed to quantify the relationship between PSC and TCHLa ̶ to each AMT cruise, model parameters varied over the study period. Changes in the relationship between PSC and TCHLa have wide implications in ecology and marine biogeochemistry, and provide key information for the development and use of empirical ocean-colour algorithms. Results illustrate the importance of maintaining a time-series of in-situ observations in remote regions of the ocean, such as that acquired in the AMT programme. Journal Article Journal of Marine Systems 150 56 65 27 5 2015 2015-05-27 10.1016/j.jmarsys.2015.05.008 Important because it contributes to showing long-term changes in phytoplankton community composition across the Atlantic COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University 2016-02-11T13:43:12.9917265 2015-06-11T17:27:35.4078231 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Ertugrul Agirbas 1 Victor Martinez-Vicente 2 Robert J. W. Brewin 3 Marie-Fanny Racault 4 Ruth Airs 5 Carole Llewellyn 6 0022015-11022016134149.pdf LlewellynTemporalChangesinTotal2015Postprint.pdf 2016-02-11T13:41:49.9670000 Output 968061 application/pdf Accepted Manuscript true 2016-05-27T00:00:00.0000000 true
title Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
spellingShingle Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
Carole Llewellyn
title_short Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
title_full Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
title_fullStr Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
title_full_unstemmed Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
title_sort Temporal changes in total and size-fractioned chlorophyll-a in surface waters of three provinces in the Atlantic Ocean (September to November) between 2003 and 2010
author_id_str_mv bcd94bda79ebf4c2c82d82dfb027a140
author_id_fullname_str_mv bcd94bda79ebf4c2c82d82dfb027a140_***_Carole Llewellyn
author Carole Llewellyn
author2 Ertugrul Agirbas
Victor Martinez-Vicente
Robert J. W. Brewin
Marie-Fanny Racault
Ruth Airs
Carole Llewellyn
format Journal article
container_title Journal of Marine Systems
container_volume 150
container_start_page 56
publishDate 2015
institution Swansea University
doi_str_mv 10.1016/j.jmarsys.2015.05.008
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 1
active_str 0
description Phytoplankton total chlorophyll concentration (TCHLa) and phytoplankton size structure are two important ecological indicators in biological oceanography. Using high performance liquid chromatography (HPLC) pigment data, collected from surface waters along the Atlantic Meridional Transect (AMT), we examine temporal changes in TCHLa and phytoplankton size class (PSC: micro-, nano- and pico-phytoplankton) between 2003 and 2010 (September to November cruises only), in three ecological provinces of the Atlantic Ocean. The HPLC data indicate no significant change in TCHLa in northern and equatorial provinces, and an increase in the southern province. These changes were not significantly different to changes in TCHLa derived using satellite ocean-colour data over the same study period. Despite no change in AMT TCHLa in northern and equatorial provinces, significant differences in PSC were observed, related to changes in key diagnostic pigments (fucoxanthin, peridinin, 19’-hexanoyloxyfucoxanthin and zeaxanthin), with an increase in small cells (nano- and pico-phytoplankton) and a decrease in larger cells (micro-phytoplankton). When fitting a three-component model of phytoplankton size structure ̶ designed to quantify the relationship between PSC and TCHLa ̶ to each AMT cruise, model parameters varied over the study period. Changes in the relationship between PSC and TCHLa have wide implications in ecology and marine biogeochemistry, and provide key information for the development and use of empirical ocean-colour algorithms. Results illustrate the importance of maintaining a time-series of in-situ observations in remote regions of the ocean, such as that acquired in the AMT programme.
published_date 2015-05-27T18:46:08Z
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