Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean
Relationships between sea surface temperature (SST, > 10 m) and vertical density stratification, nutrient concentrations, and phytoplankton biomass, composition, and chlorophyll a (Chl a ) specific absorption were assessed in spring and summer from latitudes 29 to 63° N in the northeast Atlantic...
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ftdoajarticles:oai:doaj.org/article:aebd3144d2ae4f699f77db2ab96d966b 2023-05-15T17:41:18+02:00 Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean W. H. van de Poll G. Kulk K. R. Timmermans C. P. D. Brussaard H. J. van der Woerd M. J. Kehoe K. D. A. Mojica R. J. W. Visser P. D. Rozema A. G. J. Buma 2013-06-01T00:00:00Z https://doi.org/10.5194/bg-10-4227-2013 https://doaj.org/article/aebd3144d2ae4f699f77db2ab96d966b EN eng Copernicus Publications http://www.biogeosciences.net/10/4227/2013/bg-10-4227-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-4227-2013 1726-4170 1726-4189 https://doaj.org/article/aebd3144d2ae4f699f77db2ab96d966b Biogeosciences, Vol 10, Iss 6, Pp 4227-4240 (2013) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/bg-10-4227-2013 2022-12-31T00:22:45Z Relationships between sea surface temperature (SST, > 10 m) and vertical density stratification, nutrient concentrations, and phytoplankton biomass, composition, and chlorophyll a (Chl a ) specific absorption were assessed in spring and summer from latitudes 29 to 63° N in the northeast Atlantic Ocean. The goal of this study was to identify relationships between phytoplankton and abiotic factors in an existing SST and stratification gradient. Furthermore, a bio-optical model was used to estimate productivity for five phytoplankton groups. Nutrient concentration (integrated from 0 to 125 m) was inversely correlated with SST in spring and summer. SST was also inversely correlated with near-surface (0–50 m) Chl a and productivity for stratified stations. Near-surface Chl a and productivity showed exponential relationships with SST. Chl a specific absorption and excess light experiments indicated photoacclimation to lower irradiance in spring as compared to summer. In addition, Chl a specific absorption suggested that phytoplankton size decreased in summer. The contribution of cyanobacteria to water column productivity of stratified stations correlated positively with SST and inversely with nutrient concentration. This suggests that a rise in SST (over a 13–23 °C range) stimulates productivity by cyanobacteria at the expense of haptophytes, which showed an inverse relationship to SST. At higher latitudes, where rising SST may prolong the stratified season, haptophyte productivity may expand at the expense of diatom productivity. Depth-integrated Chl a (0–410 m) was greatest in the spring at higher latitudes, where stratification in the upper 200 m was weakest. This suggests that stronger stratification does not necessarily result in higher phytoplankton biomass standing stock in this region. Article in Journal/Newspaper Northeast Atlantic Directory of Open Access Journals: DOAJ Articles Biogeosciences 10 6 4227 4240 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 W. H. van de Poll G. Kulk K. R. Timmermans C. P. D. Brussaard H. J. van der Woerd M. J. Kehoe K. D. A. Mojica R. J. W. Visser P. D. Rozema A. G. J. Buma Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Relationships between sea surface temperature (SST, > 10 m) and vertical density stratification, nutrient concentrations, and phytoplankton biomass, composition, and chlorophyll a (Chl a ) specific absorption were assessed in spring and summer from latitudes 29 to 63° N in the northeast Atlantic Ocean. The goal of this study was to identify relationships between phytoplankton and abiotic factors in an existing SST and stratification gradient. Furthermore, a bio-optical model was used to estimate productivity for five phytoplankton groups. Nutrient concentration (integrated from 0 to 125 m) was inversely correlated with SST in spring and summer. SST was also inversely correlated with near-surface (0–50 m) Chl a and productivity for stratified stations. Near-surface Chl a and productivity showed exponential relationships with SST. Chl a specific absorption and excess light experiments indicated photoacclimation to lower irradiance in spring as compared to summer. In addition, Chl a specific absorption suggested that phytoplankton size decreased in summer. The contribution of cyanobacteria to water column productivity of stratified stations correlated positively with SST and inversely with nutrient concentration. This suggests that a rise in SST (over a 13–23 °C range) stimulates productivity by cyanobacteria at the expense of haptophytes, which showed an inverse relationship to SST. At higher latitudes, where rising SST may prolong the stratified season, haptophyte productivity may expand at the expense of diatom productivity. Depth-integrated Chl a (0–410 m) was greatest in the spring at higher latitudes, where stratification in the upper 200 m was weakest. This suggests that stronger stratification does not necessarily result in higher phytoplankton biomass standing stock in this region. |
format |
Article in Journal/Newspaper |
author |
W. H. van de Poll G. Kulk K. R. Timmermans C. P. D. Brussaard H. J. van der Woerd M. J. Kehoe K. D. A. Mojica R. J. W. Visser P. D. Rozema A. G. J. Buma |
author_facet |
W. H. van de Poll G. Kulk K. R. Timmermans C. P. D. Brussaard H. J. van der Woerd M. J. Kehoe K. D. A. Mojica R. J. W. Visser P. D. Rozema A. G. J. Buma |
author_sort |
W. H. van de Poll |
title |
Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean |
title_short |
Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean |
title_full |
Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean |
title_fullStr |
Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean |
title_full_unstemmed |
Phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast Atlantic Ocean |
title_sort |
phytoplankton chlorophyll a biomass, composition, and productivity along a temperature and stratification gradient in the northeast atlantic ocean |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/bg-10-4227-2013 https://doaj.org/article/aebd3144d2ae4f699f77db2ab96d966b |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Biogeosciences, Vol 10, Iss 6, Pp 4227-4240 (2013) |
op_relation |
http://www.biogeosciences.net/10/4227/2013/bg-10-4227-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-4227-2013 1726-4170 1726-4189 https://doaj.org/article/aebd3144d2ae4f699f77db2ab96d966b |
op_doi |
https://doi.org/10.5194/bg-10-4227-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
6 |
container_start_page |
4227 |
op_container_end_page |
4240 |
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1766142794533961728 |