Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice
peer reviewed We studied the temporal variations of CO2, O-2, and dimethylsulfide (DMS) concentrations within three environments (sea-ice brine, platelet ice-like layer, and underlying water) in the coastal area of Adelie Land, Antarctica, during spring 1999 before ice breakup. Temporal changes were...
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Amer Soc Limnology Oceanography
2007
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Online Access: | https://orbi.uliege.be/handle/2268/2094 https://orbi.uliege.be/bitstream/2268/2094/1/Delille%20et%20al%202007.pdf https://doi.org/10.4319/lo.2007.52.4.1367 |
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ftorbi:oai:orbi.ulg.ac.be:2268/2094 2024-04-21T07:43:42+00:00 Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice Delille, Bruno Jourdain, B. Borges, Alberto Tison, Jean-Louis Delille, D. 2007-07 https://orbi.uliege.be/handle/2268/2094 https://orbi.uliege.be/bitstream/2268/2094/1/Delille%20et%20al%202007.pdf https://doi.org/10.4319/lo.2007.52.4.1367 en eng Amer Soc Limnology Oceanography http://www.aslo.org/lo/pdf/vol_52/issue_4/1367.pdf urn:issn:0024-3590 urn:issn:1939-5590 https://orbi.uliege.be/handle/2268/2094 info:hdl:2268/2094 https://orbi.uliege.be/bitstream/2268/2094/1/Delille%20et%20al%202007.pdf doi:10.4319/lo.2007.52.4.1367 scopus-id:2-s2.0-34547140649 open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Limnology and Oceanography, 52 (4), 1367-1379 (2007-07) Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article peer reviewed 2007 ftorbi https://doi.org/10.4319/lo.2007.52.4.1367 2024-03-27T14:57:31Z peer reviewed We studied the temporal variations of CO2, O-2, and dimethylsulfide (DMS) concentrations within three environments (sea-ice brine, platelet ice-like layer, and underlying water) in the coastal area of Adelie Land, Antarctica, during spring 1999 before ice breakup. Temporal changes were different among the three environments, while similar temporal trends were observed within each environment at all stations. The underlying water was always undersaturated in O-2 (around 85%) and oversaturated in CO2 at the deepest stations. O-2 concentrations increased in sea-ice brine as it melted, reaching oversaturation up to 160% due to the primary production by the sea-ice algae community (chlorophyll a in the bottom ice reached concentrations up to 160 mu g L-1 of bulk ice). In parallel, DMS concentrations increased up to 60 nmol L-1 within sea- ice brine and the platelet ice- like layer. High biological activity consumed CO2 and promoted the decrease of partial pressure of CO2 (pCO(2)). In addition, melting of pure ice crystals and calcium carbonate (CaCO3) dissolution promoted the shift from a state of CO2 oversaturation to a state of marked CO2 undersaturation (pCO(2) < 30 dPa). On the whole, our results suggest that late spring land fast sea ice can potentially act as a sink of CO2 and a source of DMS for the neighbouring environments, i.e., the underlying water or/ and the atmosphere. Article in Journal/Newspaper Adelie Land Antarc* Antarctic Antarctica ice algae Sea ice University of Liège: ORBi (Open Repository and Bibliography) Limnology and Oceanography 52 4 1367 1379 |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie |
spellingShingle |
Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie Delille, Bruno Jourdain, B. Borges, Alberto Tison, Jean-Louis Delille, D. Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice |
topic_facet |
Life sciences Aquatic sciences & oceanology Sciences du vivant Sciences aquatiques & océanologie |
description |
peer reviewed We studied the temporal variations of CO2, O-2, and dimethylsulfide (DMS) concentrations within three environments (sea-ice brine, platelet ice-like layer, and underlying water) in the coastal area of Adelie Land, Antarctica, during spring 1999 before ice breakup. Temporal changes were different among the three environments, while similar temporal trends were observed within each environment at all stations. The underlying water was always undersaturated in O-2 (around 85%) and oversaturated in CO2 at the deepest stations. O-2 concentrations increased in sea-ice brine as it melted, reaching oversaturation up to 160% due to the primary production by the sea-ice algae community (chlorophyll a in the bottom ice reached concentrations up to 160 mu g L-1 of bulk ice). In parallel, DMS concentrations increased up to 60 nmol L-1 within sea- ice brine and the platelet ice- like layer. High biological activity consumed CO2 and promoted the decrease of partial pressure of CO2 (pCO(2)). In addition, melting of pure ice crystals and calcium carbonate (CaCO3) dissolution promoted the shift from a state of CO2 oversaturation to a state of marked CO2 undersaturation (pCO(2) < 30 dPa). On the whole, our results suggest that late spring land fast sea ice can potentially act as a sink of CO2 and a source of DMS for the neighbouring environments, i.e., the underlying water or/ and the atmosphere. |
format |
Article in Journal/Newspaper |
author |
Delille, Bruno Jourdain, B. Borges, Alberto Tison, Jean-Louis Delille, D. |
author_facet |
Delille, Bruno Jourdain, B. Borges, Alberto Tison, Jean-Louis Delille, D. |
author_sort |
Delille, Bruno |
title |
Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice |
title_short |
Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice |
title_full |
Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice |
title_fullStr |
Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice |
title_full_unstemmed |
Biogas (CO2, O2, dimethylsulfide) dynamics in spring Antarctic fast ice |
title_sort |
biogas (co2, o2, dimethylsulfide) dynamics in spring antarctic fast ice |
publisher |
Amer Soc Limnology Oceanography |
publishDate |
2007 |
url |
https://orbi.uliege.be/handle/2268/2094 https://orbi.uliege.be/bitstream/2268/2094/1/Delille%20et%20al%202007.pdf https://doi.org/10.4319/lo.2007.52.4.1367 |
genre |
Adelie Land Antarc* Antarctic Antarctica ice algae Sea ice |
genre_facet |
Adelie Land Antarc* Antarctic Antarctica ice algae Sea ice |
op_source |
Limnology and Oceanography, 52 (4), 1367-1379 (2007-07) |
op_relation |
http://www.aslo.org/lo/pdf/vol_52/issue_4/1367.pdf urn:issn:0024-3590 urn:issn:1939-5590 https://orbi.uliege.be/handle/2268/2094 info:hdl:2268/2094 https://orbi.uliege.be/bitstream/2268/2094/1/Delille%20et%20al%202007.pdf doi:10.4319/lo.2007.52.4.1367 scopus-id:2-s2.0-34547140649 |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.4319/lo.2007.52.4.1367 |
container_title |
Limnology and Oceanography |
container_volume |
52 |
container_issue |
4 |
container_start_page |
1367 |
op_container_end_page |
1379 |
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1796951870205329408 |