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 spectromete...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2018-04-01
|
| Series: | Biogeosciences |
| Online Access: | https://www.biogeosciences.net/15/2449/2018/bg-15-2449-2018.pdf |
| _version_ | 1819327075439345664 |
|---|---|
| author | T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell P. Tortell P. Tortell |
| author_facet | T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell P. Tortell P. Tortell |
| author_sort | T. Jarníková |
| collection | DOAJ |
| 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 <i>a</i> (chl <i>a</i>)
fluorescence, indicative of elevated phytoplankton biomass. Across the full
sampling transect, there were only weak relationships between DMS(P), chl <i>a</i>
fluorescence and other measured variables, including positive relationships
between DMSP : chl <i>a</i> 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. |
| first_indexed | 2024-12-24T13:05:04Z |
| format | Article |
| id | doaj.art-13fd919e47aa462db118ee214ddbe63e |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-12-24T13:05:04Z |
| publishDate | 2018-04-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-13fd919e47aa462db118ee214ddbe63e2022-12-21T16:54:01ZengCopernicus PublicationsBiogeosciences1726-41701726-41892018-04-01152449246510.5194/bg-15-2449-2018The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015T. Jarníková0J. Dacey1M. Lizotte2M. Levasseur3P. Tortell4P. Tortell5P. Tortell6Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2022 Main Mall, Vancouver, BC, V6T 1Z3, CanadaWoods Hole Oceanographic Institution, Woods Hole, MA 02543, USAUniversité Laval, Department of Biology (Québec-Océan), Québec City, Québec, CanadaUniversité Laval, Department of Biology (Québec-Océan), Québec City, Québec, CanadaDepartment of Earth, Ocean and Atmospheric Sciences, University of British Columbia, 2022 Main Mall, Vancouver, BC, V6T 1Z3, CanadaDepartment of Botany, University of British Columbia, 6270 University Blvd., Vancouver, BC, V6T 1Z4, CanadaPeter Wall Institute for Advanced Studies, University of British Columbia, 6330 Crescent Blvd., Vancouver, BC, V6T 1Z4, CanadaWe 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 <i>a</i> (chl <i>a</i>) fluorescence, indicative of elevated phytoplankton biomass. Across the full sampling transect, there were only weak relationships between DMS(P), chl <i>a</i> fluorescence and other measured variables, including positive relationships between DMSP : chl <i>a</i> 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.https://www.biogeosciences.net/15/2449/2018/bg-15-2449-2018.pdf |
| spellingShingle | T. Jarníková J. Dacey M. Lizotte M. Levasseur P. Tortell P. Tortell P. Tortell The distribution of methylated sulfur compounds, DMS and DMSP, in Canadian subarctic and Arctic marine waters during summer 2015 Biogeosciences |
| title | 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_short | 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 |
| url | https://www.biogeosciences.net/15/2449/2018/bg-15-2449-2018.pdf |
| work_keys_str_mv | AT tjarnikova thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT jdacey thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT mlizotte thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT mlevasseur thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT ptortell thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT ptortell thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT ptortell thedistributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT tjarnikova distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT jdacey distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT mlizotte distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT mlevasseur distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT ptortell distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT ptortell distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 AT ptortell distributionofmethylatedsulfurcompoundsdmsanddmspincanadiansubarcticandarcticmarinewatersduringsummer2015 |