Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean

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The influence of the plankton community structure on carbon dynamics was studied in the surface waters of the Argentinean continental shelf (SW Atlantic Ocean) in summer and fall 2002, 2003 and 2004, The horizontal changes in plankton community respiration (R), net community production (NCP) and gro...

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Autores principales: Schloss, I.R., Ferreyra, G.A., Ferrario, M.E., Almandoz, G.O., Codina, R., Bianchi, A.A., Balestrini, C.F., Ochoa, H.A., Pino, D.R., Poisson, A.
Formato: Artículo publishedVersion
Publicado: 2007
Materias:
Continental shelf
Gross primary production
Net primary production
Oxygen saturation
pCO2
Phytoplankton composition
Respiration
SW atlantic
air-sea interaction
biomass
carbon dioxide
carbon sink
community composition
continental shelf
diatom
flagellate
net primary production
oxygen
partial pressure
photosynthesis
phytoplankton
respiration
surface water
Argentine Shelf
Atlantic Ocean
Atlantic Ocean (Southwest)
Bacillariophyta
Mastigophora (flagellates)
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01718630_v332_n_p93_Schloss
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_01718630_v332_n_p93_Schloss_oai
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Repositorio Digital de la Universidad de Buenos Aires (UBA) de Universidad de Buenos Aires
id I28-R145-paper_01718630_v332_n_p93_Schloss_oai
record_format dspace
spelling I28-R145-paper_01718630_v332_n_p93_Schloss_oai2024-08-16 Schloss, I.R. Ferreyra, G.A. Ferrario, M.E. Almandoz, G.O. Codina, R. Bianchi, A.A. Balestrini, C.F. Ochoa, H.A. Pino, D.R. Poisson, A. 2007 The influence of the plankton community structure on carbon dynamics was studied in the surface waters of the Argentinean continental shelf (SW Atlantic Ocean) in summer and fall 2002, 2003 and 2004, The horizontal changes in plankton community respiration (R), net community production (NCP) and gross primary production (GPP) were (1) compared with the difference in the partial pressure of CO2 (pCO2) between the sea surface and the atmosphere (ΔpCO2), (2) compared with oxygen saturation and (3) related to the microscopic phytoplankton assemblages, This area, which has recently been shown to be a CO2 sink, had an average surface oxygen saturation of 108.1%, indicating that net photosynthesis could have played a dominant role in the CO2 dynamics. At most stations, the production:respiration (GPP:R) ratio was greater than 1, indicating that planktonic communities were autotrophic; the average GPP:R ratio for the whole study was 2.99, Phytoplankton biomass (chlorophyll a) and NCP showed an inverse relationship with ΔpCO2 and a direct relationship with %O 2 saturation when phytoplankton assemblages were dominated by diatoms (30% of the stations), This was not the case when small (≤5 μm) flagellates were the most abundant organisms, Although NCP was mostly positive for both groups of stations (i.e. diatom-dominated or small flagellate- dominated), other physical and biological processes are thought to modify the CO2 dynamics when small flagellates are the prevailing phytoplankton group. © Inter-Research 2007. Fil:Schloss, I.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_01718630_v332_n_p93_Schloss info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar Mar. Ecol. Prog. Ser. 2007;332:93-106 Continental shelf Gross primary production Net primary production Oxygen saturation pCO2 Phytoplankton composition Respiration SW atlantic air-sea interaction biomass carbon dioxide carbon sink community composition continental shelf diatom flagellate net primary production oxygen partial pressure photosynthesis phytoplankton respiration surface water Argentine Shelf Atlantic Ocean Atlantic Ocean (Southwest) Bacillariophyta Mastigophora (flagellates) Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_01718630_v332_n_p93_Schloss_oai
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-145
collection Repositorio Digital de la Universidad de Buenos Aires (UBA)
topic Continental shelf
Gross primary production
Net primary production
Oxygen saturation
pCO2
Phytoplankton composition
Respiration
SW atlantic
air-sea interaction
biomass
carbon dioxide
carbon sink
community composition
continental shelf
diatom
flagellate
net primary production
oxygen
partial pressure
photosynthesis
phytoplankton
respiration
surface water
Argentine Shelf
Atlantic Ocean
Atlantic Ocean (Southwest)
Bacillariophyta
Mastigophora (flagellates)
spellingShingle Continental shelf
Gross primary production
Net primary production
Oxygen saturation
pCO2
Phytoplankton composition
Respiration
SW atlantic
air-sea interaction
biomass
carbon dioxide
carbon sink
community composition
continental shelf
diatom
flagellate
net primary production
oxygen
partial pressure
photosynthesis
phytoplankton
respiration
surface water
Argentine Shelf
Atlantic Ocean
Atlantic Ocean (Southwest)
Bacillariophyta
Mastigophora (flagellates)
Schloss, I.R.
Ferreyra, G.A.
Ferrario, M.E.
Almandoz, G.O.
Codina, R.
Bianchi, A.A.
Balestrini, C.F.
Ochoa, H.A.
Pino, D.R.
Poisson, A.
Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean
topic_facet Continental shelf
Gross primary production
Net primary production
Oxygen saturation
pCO2
Phytoplankton composition
Respiration
SW atlantic
air-sea interaction
biomass
carbon dioxide
carbon sink
community composition
continental shelf
diatom
flagellate
net primary production
oxygen
partial pressure
photosynthesis
phytoplankton
respiration
surface water
Argentine Shelf
Atlantic Ocean
Atlantic Ocean (Southwest)
Bacillariophyta
Mastigophora (flagellates)
description The influence of the plankton community structure on carbon dynamics was studied in the surface waters of the Argentinean continental shelf (SW Atlantic Ocean) in summer and fall 2002, 2003 and 2004, The horizontal changes in plankton community respiration (R), net community production (NCP) and gross primary production (GPP) were (1) compared with the difference in the partial pressure of CO2 (pCO2) between the sea surface and the atmosphere (ΔpCO2), (2) compared with oxygen saturation and (3) related to the microscopic phytoplankton assemblages, This area, which has recently been shown to be a CO2 sink, had an average surface oxygen saturation of 108.1%, indicating that net photosynthesis could have played a dominant role in the CO2 dynamics. At most stations, the production:respiration (GPP:R) ratio was greater than 1, indicating that planktonic communities were autotrophic; the average GPP:R ratio for the whole study was 2.99, Phytoplankton biomass (chlorophyll a) and NCP showed an inverse relationship with ΔpCO2 and a direct relationship with %O 2 saturation when phytoplankton assemblages were dominated by diatoms (30% of the stations), This was not the case when small (≤5 μm) flagellates were the most abundant organisms, Although NCP was mostly positive for both groups of stations (i.e. diatom-dominated or small flagellate- dominated), other physical and biological processes are thought to modify the CO2 dynamics when small flagellates are the prevailing phytoplankton group. © Inter-Research 2007.
format Artículo
Artículo
publishedVersion
author Schloss, I.R.
Ferreyra, G.A.
Ferrario, M.E.
Almandoz, G.O.
Codina, R.
Bianchi, A.A.
Balestrini, C.F.
Ochoa, H.A.
Pino, D.R.
Poisson, A.
author_facet Schloss, I.R.
Ferreyra, G.A.
Ferrario, M.E.
Almandoz, G.O.
Codina, R.
Bianchi, A.A.
Balestrini, C.F.
Ochoa, H.A.
Pino, D.R.
Poisson, A.
author_sort Schloss, I.R.
title Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean
title_short Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean
title_full Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean
title_fullStr Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean
title_full_unstemmed Role of plankton communities in sea-air variations in pCO2 in the SW Atlantic Ocean
title_sort role of plankton communities in sea-air variations in pco2 in the sw atlantic ocean
publishDate 2007
url http://hdl.handle.net/20.500.12110/paper_01718630_v332_n_p93_Schloss
https://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_01718630_v332_n_p93_Schloss_oai
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