The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015
We present seawater concentrations of dimethyl sulfide (DMS) and dimethylsulfoniopropionate (DMSP) measured across a transect from the Labrador Sea to the Canadian Arctic Archipelago during summer 2015. Using an automated ship-board gas chromatography system and a membrane-inlet mass spectrometer, w...
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ftdoajarticles:oai:doaj.org/article:13fd919e47aa462db118ee214ddbe63e 2023-05-15T14:28:53+02:00 The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell 2018-04-01T00:00:00Z https://doi.org/10.5194/bg-15-2449-2018 https://doaj.org/article/13fd919e47aa462db118ee214ddbe63e EN eng Copernicus Publications https://www.biogeosciences.net/15/2449/2018/bg-15-2449-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-2449-2018 1726-4170 1726-4189 https://doaj.org/article/13fd919e47aa462db118ee214ddbe63e Biogeosciences, Vol 15, Pp 2449-2465 (2018) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2018 ftdoajarticles https://doi.org/10.5194/bg-15-2449-2018 2022-12-31T15:54:33Z We present seawater concentrations of dimethyl sulfide (DMS) and dimethylsulfoniopropionate (DMSP) measured across a transect from the Labrador Sea to the Canadian Arctic Archipelago during summer 2015. Using an automated ship-board gas chromatography system and a membrane-inlet mass spectrometer, we measured a wide range of DMS (∼ 1 to 18 nM) and DMSP (∼ 1 to 150 nM) concentrations. The highest DMS and DMSP concentrations occurred in a localized region of Baffin Bay, where surface waters were characterized by high chlorophyll a (chl a ) fluorescence, indicative of elevated phytoplankton biomass. Across the full sampling transect, there were only weak relationships between DMS(P), chl a fluorescence and other measured variables, including positive relationships between DMSP : chl a ratios and several taxonomic marker pigments, and elevated DMS(P) concentrations in partially ice-covered areas. Our high spatial resolution measurements allowed us to examine DMS variability over small scales (< 1 km), documenting strong DMS concentration gradients across surface hydrographic frontal features. Our new observations fill in an important observational gap in the Arctic Ocean and provide additional information on sea–air DMS fluxes from this ocean region. In addition, this study constitutes a significant contribution to the existing Arctic DMS(P) dataset and provides a baseline for future measurements in the region. Article in Journal/Newspaper Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Labrador Sea Phytoplankton Subarctic ice covered areas Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago Biogeosciences 15 8 2449 2465 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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 T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
We present seawater concentrations of dimethyl sulfide (DMS) and dimethylsulfoniopropionate (DMSP) measured across a transect from the Labrador Sea to the Canadian Arctic Archipelago during summer 2015. Using an automated ship-board gas chromatography system and a membrane-inlet mass spectrometer, we measured a wide range of DMS (∼ 1 to 18 nM) and DMSP (∼ 1 to 150 nM) concentrations. The highest DMS and DMSP concentrations occurred in a localized region of Baffin Bay, where surface waters were characterized by high chlorophyll a (chl a ) fluorescence, indicative of elevated phytoplankton biomass. Across the full sampling transect, there were only weak relationships between DMS(P), chl a fluorescence and other measured variables, including positive relationships between DMSP : chl a ratios and several taxonomic marker pigments, and elevated DMS(P) concentrations in partially ice-covered areas. Our high spatial resolution measurements allowed us to examine DMS variability over small scales (< 1 km), documenting strong DMS concentration gradients across surface hydrographic frontal features. Our new observations fill in an important observational gap in the Arctic Ocean and provide additional information on sea–air DMS fluxes from this ocean region. In addition, this study constitutes a significant contribution to the existing Arctic DMS(P) dataset and provides a baseline for future measurements in the region. |
format |
Article in Journal/Newspaper |
author |
T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell |
author_facet |
T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell |
author_sort |
T. Jarníková |
title |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_short |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_full |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_fullStr |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_full_unstemmed |
The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 |
title_sort |
distribution of methylated sulfur compounds, dms and dmsp, in canadian subarctic and arctic marine waters during summer 2015 |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/bg-15-2449-2018 https://doaj.org/article/13fd919e47aa462db118ee214ddbe63e |
geographic |
Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago |
geographic_facet |
Arctic Arctic Ocean Baffin Bay Canadian Arctic Archipelago |
genre |
Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Labrador Sea Phytoplankton Subarctic ice covered areas |
genre_facet |
Arctic Archipelago Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Canadian Arctic Archipelago Labrador Sea Phytoplankton Subarctic ice covered areas |
op_source |
Biogeosciences, Vol 15, Pp 2449-2465 (2018) |
op_relation |
https://www.biogeosciences.net/15/2449/2018/bg-15-2449-2018.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-15-2449-2018 1726-4170 1726-4189 https://doaj.org/article/13fd919e47aa462db118ee214ddbe63e |
op_doi |
https://doi.org/10.5194/bg-15-2449-2018 |
container_title |
Biogeosciences |
container_volume |
15 |
container_issue |
8 |
container_start_page |
2449 |
op_container_end_page |
2465 |
_version_ |
1766303026878873600 |