Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic
Changes in coccolithophore productivity in response to climate-driven ocean warming are likely to have cascading biogeochemical effects that feed back to the changing climate. This paper investigates the role (and interplay) of large-scale oceanographic and atmospheric processes across the North- an...
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Online Access: | http://dx.doi.org/10.3389/fmars.2023.1119488 https://www.frontiersin.org/articles/10.3389/fmars.2023.1119488/full |
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crfrontiers:10.3389/fmars.2023.1119488 2024-09-15T18:22:03+00:00 Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic Guerreiro, Catarina V. Ferreira, Afonso Cros, Lluisa Stuut, Jan-Berend Baker, Alex Tracana, Andreia Pinto, Catarina Veloso, Vera Rees, Andrew P. Cachão, Mário A. P. Nunes, Telmo Brotas, Vanda Fundação para a Ciência e a Tecnologia European Commission European Commission Natural Environment Research Council 2023 http://dx.doi.org/10.3389/fmars.2023.1119488 https://www.frontiersin.org/articles/10.3389/fmars.2023.1119488/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Marine Science volume 10 ISSN 2296-7745 journal-article 2023 crfrontiers https://doi.org/10.3389/fmars.2023.1119488 2024-08-27T04:03:54Z Changes in coccolithophore productivity in response to climate-driven ocean warming are likely to have cascading biogeochemical effects that feed back to the changing climate. This paper investigates the role (and interplay) of large-scale oceanographic and atmospheric processes across the North- and Equatorial Atlantic, including Saharan dust deposition, on the distribution of coccolithophore communities. The study is based on biological and hydrological data collected across the photic zone of the ocean, and aerosol data collected from the lower atmosphere, across 50°N–1°S during the Atlantic Meridional Transect in boreal Autumn of 2018 (AMT28), in synergy with Earth Observations. Results confirm existing understanding of the distribution of coccolithophore communities which are related to major meridional hydrological gradients across the North Atlantic. Dynamic, oxygenated and microphytoplankton-enriched waters at higher-latitudes were characterized by less diverse coccolithophore populations, dominated by placolith-bearing r-selected coccolithophores. In contrast, the heavily stratified and picoplankton-enriched waters of the subtropical gyre revealed more diverse populations, dominated by umbelliform coccolithophores and holococcolithophores at the surface, and by floriform taxa in the lower photic zone. Mean concentrations of 14.4×10 3 cells/L present in the North Atlantic Tropical Gyre Province (30–12°N), only slightly lower compared to 17.7×10 3 cells/L produced in the North Atlantic Drift province (50–40°N), provide a snapshot perspective on the importance of coccolithophore production in heavily stratified gyre conditions. Higher concentrations of 19’-Hexanoyloxyfucoxanthin (HexFuco) in regions of enhanced production of r-selected placolith-bearing species suggest that this pigment should not be generalized as a proxy for the entire coccolithophore community. Enhanced abundances of fast-blooming Emiliania huxleyi and Gephyrocapsa oceanica , and of cyanobacteria (including both picoplankton and N 2 ... Article in Journal/Newspaper North Atlantic Frontiers (Publisher) Frontiers in Marine Science 10 |
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description |
Changes in coccolithophore productivity in response to climate-driven ocean warming are likely to have cascading biogeochemical effects that feed back to the changing climate. This paper investigates the role (and interplay) of large-scale oceanographic and atmospheric processes across the North- and Equatorial Atlantic, including Saharan dust deposition, on the distribution of coccolithophore communities. The study is based on biological and hydrological data collected across the photic zone of the ocean, and aerosol data collected from the lower atmosphere, across 50°N–1°S during the Atlantic Meridional Transect in boreal Autumn of 2018 (AMT28), in synergy with Earth Observations. Results confirm existing understanding of the distribution of coccolithophore communities which are related to major meridional hydrological gradients across the North Atlantic. Dynamic, oxygenated and microphytoplankton-enriched waters at higher-latitudes were characterized by less diverse coccolithophore populations, dominated by placolith-bearing r-selected coccolithophores. In contrast, the heavily stratified and picoplankton-enriched waters of the subtropical gyre revealed more diverse populations, dominated by umbelliform coccolithophores and holococcolithophores at the surface, and by floriform taxa in the lower photic zone. Mean concentrations of 14.4×10 3 cells/L present in the North Atlantic Tropical Gyre Province (30–12°N), only slightly lower compared to 17.7×10 3 cells/L produced in the North Atlantic Drift province (50–40°N), provide a snapshot perspective on the importance of coccolithophore production in heavily stratified gyre conditions. Higher concentrations of 19’-Hexanoyloxyfucoxanthin (HexFuco) in regions of enhanced production of r-selected placolith-bearing species suggest that this pigment should not be generalized as a proxy for the entire coccolithophore community. Enhanced abundances of fast-blooming Emiliania huxleyi and Gephyrocapsa oceanica , and of cyanobacteria (including both picoplankton and N 2 ... |
author2 |
Fundação para a Ciência e a Tecnologia European Commission European Commission Natural Environment Research Council |
format |
Article in Journal/Newspaper |
author |
Guerreiro, Catarina V. Ferreira, Afonso Cros, Lluisa Stuut, Jan-Berend Baker, Alex Tracana, Andreia Pinto, Catarina Veloso, Vera Rees, Andrew P. Cachão, Mário A. P. Nunes, Telmo Brotas, Vanda |
spellingShingle |
Guerreiro, Catarina V. Ferreira, Afonso Cros, Lluisa Stuut, Jan-Berend Baker, Alex Tracana, Andreia Pinto, Catarina Veloso, Vera Rees, Andrew P. Cachão, Mário A. P. Nunes, Telmo Brotas, Vanda Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic |
author_facet |
Guerreiro, Catarina V. Ferreira, Afonso Cros, Lluisa Stuut, Jan-Berend Baker, Alex Tracana, Andreia Pinto, Catarina Veloso, Vera Rees, Andrew P. Cachão, Mário A. P. Nunes, Telmo Brotas, Vanda |
author_sort |
Guerreiro, Catarina V. |
title |
Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic |
title_short |
Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic |
title_full |
Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic |
title_fullStr |
Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic |
title_full_unstemmed |
Response of coccolithophore communities to oceanographic and atmospheric processes across the North- and Equatorial Atlantic |
title_sort |
response of coccolithophore communities to oceanographic and atmospheric processes across the north- and equatorial atlantic |
publisher |
Frontiers Media SA |
publishDate |
2023 |
url |
http://dx.doi.org/10.3389/fmars.2023.1119488 https://www.frontiersin.org/articles/10.3389/fmars.2023.1119488/full |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Frontiers in Marine Science volume 10 ISSN 2296-7745 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fmars.2023.1119488 |
container_title |
Frontiers in Marine Science |
container_volume |
10 |
_version_ |
1810461340922281984 |