Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula
We studied CO 2 and O 2 dynamics in the western Antarctic Peninsula (WAP) waters in relation to (1) phytoplankton biomass, (2) microbial community primary production and respiration, and (3), for the first time, phytoplankton composition, during summer and fall in 3 consecutive years (2002, 2003 and...
Published in: | Marine Ecology Progress Series |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Inter-Research
|
Subjects: | |
Online Access: | http://hdl.handle.net/11336/76245 |
id |
ftconicet:oai:ri.conicet.gov.ar:11336/76245 |
---|---|
record_format |
openpolar |
spelling |
ftconicet:oai:ri.conicet.gov.ar:11336/76245 2023-10-09T21:46:21+02:00 Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula Moreau, Sébastien Schloss, Irene Ruth Mostajir, Behzad Demers, Serge Almandoz, Gaston Osvaldo Ferrario, Martha Elba Ferreyra, Gustavo Adolfo application/pdf http://hdl.handle.net/11336/76245 eng eng Inter-Research info:eu-repo/semantics/altIdentifier/doi/10.3354/meps09466 info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v446/p45-59/ http://hdl.handle.net/11336/76245 Moreau, Sébastien; Schloss, Irene Ruth; Mostajir, Behzad; Demers, Serge; Almandoz, Gaston Osvaldo; et al.; Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula; Inter-Research; Marine Ecology Progress Series; 446; 2-2-2012; 45-59 0171-8630 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ Co 2 Sinks Co 2 Sources Community Respiration Phytoplankton Biomass Phytoplankton Composition Primary Production https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.7 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3354/meps09466 2023-09-24T20:17:37Z We studied CO 2 and O 2 dynamics in the western Antarctic Peninsula (WAP) waters in relation to (1) phytoplankton biomass, (2) microbial community primary production and respiration, and (3), for the first time, phytoplankton composition, during summer and fall in 3 consecutive years (2002, 2003 and 2004). The areal average of δpCO 2 (the difference between surface seawater and atmospheric partial pressure of CO 2) for the 3 yr was significantly negative (.20.04 ± 44.3 μatm, p < 0.01) during the summer to fall period in the region, possibly indicating a CO 2 sink. In the southern WAP (i.e. south of Anvers Island), δpCO 2 was significantly negative (.43.60 ± 39.06 μatm) during fall. In the northern WAP (north of Anvers Island), δpCO 2 values showed a more complex distribution during summer and fall (.4.96 ± 37.6 and 21.71 ± 22.39 μatm, respectively). Chlorophyll a (chl a) concentration averaged 1.03 ± 0.25 μg l.1 and was higher in the south of the peninsula. Phytoplankton composition influenced chl a concentration with higher and lower values for diatom-and phytoflagellate-dominated communities, respectively. A significant negative correlation existed between chl a and δpCO 2. From incubation experiments performed in the northern WAP, respiration was low (averaging 5.1 mmol O 2 m.3 d.1), and the net community production (NCP) correlated negatively with δpCO 2 and positively with %O 2 saturation. However, despite the high NCP values measured, δpCO 2 was significantly positive in the northern WAP during the summer to fall period. Strong mixing and lower chl a concentration may explain this result. In contrast, δpCO 2 was significantly negative in the southern WAP, possibly because of high surface water chl a concentration. Fil: Moreau, Sébastien. Institut des Sciences de la Mer de Rimouski; Canadá. Université du Québec; Canadá Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Institut des Sciences de la Mer de ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Anvers Island CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Antarctic Antarctic Peninsula Argentina Anvers ENVELOPE(-63.500,-63.500,-64.600,-64.600) Anvers Island ENVELOPE(-63.500,-63.500,-64.600,-64.600) Marine Ecology Progress Series 446 45 59 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Co 2 Sinks Co 2 Sources Community Respiration Phytoplankton Biomass Phytoplankton Composition Primary Production https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.7 |
spellingShingle |
Co 2 Sinks Co 2 Sources Community Respiration Phytoplankton Biomass Phytoplankton Composition Primary Production https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.7 Moreau, Sébastien Schloss, Irene Ruth Mostajir, Behzad Demers, Serge Almandoz, Gaston Osvaldo Ferrario, Martha Elba Ferreyra, Gustavo Adolfo Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula |
topic_facet |
Co 2 Sinks Co 2 Sources Community Respiration Phytoplankton Biomass Phytoplankton Composition Primary Production https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/1.7 |
description |
We studied CO 2 and O 2 dynamics in the western Antarctic Peninsula (WAP) waters in relation to (1) phytoplankton biomass, (2) microbial community primary production and respiration, and (3), for the first time, phytoplankton composition, during summer and fall in 3 consecutive years (2002, 2003 and 2004). The areal average of δpCO 2 (the difference between surface seawater and atmospheric partial pressure of CO 2) for the 3 yr was significantly negative (.20.04 ± 44.3 μatm, p < 0.01) during the summer to fall period in the region, possibly indicating a CO 2 sink. In the southern WAP (i.e. south of Anvers Island), δpCO 2 was significantly negative (.43.60 ± 39.06 μatm) during fall. In the northern WAP (north of Anvers Island), δpCO 2 values showed a more complex distribution during summer and fall (.4.96 ± 37.6 and 21.71 ± 22.39 μatm, respectively). Chlorophyll a (chl a) concentration averaged 1.03 ± 0.25 μg l.1 and was higher in the south of the peninsula. Phytoplankton composition influenced chl a concentration with higher and lower values for diatom-and phytoflagellate-dominated communities, respectively. A significant negative correlation existed between chl a and δpCO 2. From incubation experiments performed in the northern WAP, respiration was low (averaging 5.1 mmol O 2 m.3 d.1), and the net community production (NCP) correlated negatively with δpCO 2 and positively with %O 2 saturation. However, despite the high NCP values measured, δpCO 2 was significantly positive in the northern WAP during the summer to fall period. Strong mixing and lower chl a concentration may explain this result. In contrast, δpCO 2 was significantly negative in the southern WAP, possibly because of high surface water chl a concentration. Fil: Moreau, Sébastien. Institut des Sciences de la Mer de Rimouski; Canadá. Université du Québec; Canadá Fil: Schloss, Irene Ruth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Institut des Sciences de la Mer de ... |
format |
Article in Journal/Newspaper |
author |
Moreau, Sébastien Schloss, Irene Ruth Mostajir, Behzad Demers, Serge Almandoz, Gaston Osvaldo Ferrario, Martha Elba Ferreyra, Gustavo Adolfo |
author_facet |
Moreau, Sébastien Schloss, Irene Ruth Mostajir, Behzad Demers, Serge Almandoz, Gaston Osvaldo Ferrario, Martha Elba Ferreyra, Gustavo Adolfo |
author_sort |
Moreau, Sébastien |
title |
Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula |
title_short |
Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula |
title_full |
Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula |
title_fullStr |
Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula |
title_full_unstemmed |
Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula |
title_sort |
influence of microbial community composition and metabolism on air−sea δpco2 variation off the western antarctic peninsula |
publisher |
Inter-Research |
url |
http://hdl.handle.net/11336/76245 |
long_lat |
ENVELOPE(-63.500,-63.500,-64.600,-64.600) ENVELOPE(-63.500,-63.500,-64.600,-64.600) |
geographic |
Antarctic Antarctic Peninsula Argentina Anvers Anvers Island |
geographic_facet |
Antarctic Antarctic Peninsula Argentina Anvers Anvers Island |
genre |
Antarc* Antarctic Antarctic Peninsula Anvers Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Anvers Island |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/meps09466 info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v446/p45-59/ http://hdl.handle.net/11336/76245 Moreau, Sébastien; Schloss, Irene Ruth; Mostajir, Behzad; Demers, Serge; Almandoz, Gaston Osvaldo; et al.; Influence of microbial community composition and metabolism on air−sea ΔpCO2 variation off the western Antarctic Peninsula; Inter-Research; Marine Ecology Progress Series; 446; 2-2-2012; 45-59 0171-8630 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3354/meps09466 |
container_title |
Marine Ecology Progress Series |
container_volume |
446 |
container_start_page |
45 |
op_container_end_page |
59 |
_version_ |
1779322049204846592 |