Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula
The Southern Ocean is a hotspot of the climate-relevant organic sulfur compound dimethyl sulfide (DMS). Spatial and temporal variability in DMS concentration is higher than in any other oceanic region, especially in the marginal ice zone. During a one-week expedition across the continental shelf of...
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ftpubmed:oai:pubmedcentral.nih.gov:5954469 2023-05-15T13:51:43+02:00 Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula Stefels, Jacqueline van Leeuwe, Maria A. Jones, Elizabeth M. Meredith, Michael P. Venables, Hugh J. Webb, Alison L. Henley, Sian F. 2018-06-28 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954469/ http://www.ncbi.nlm.nih.gov/pubmed/29760113 https://doi.org/10.1098/rsta.2017.0169 en eng The Royal Society Publishing http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954469/ http://www.ncbi.nlm.nih.gov/pubmed/29760113 http://dx.doi.org/10.1098/rsta.2017.0169 © 2018 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. Articles Text 2018 ftpubmed https://doi.org/10.1098/rsta.2017.0169 2019-06-30T00:47:19Z The Southern Ocean is a hotspot of the climate-relevant organic sulfur compound dimethyl sulfide (DMS). Spatial and temporal variability in DMS concentration is higher than in any other oceanic region, especially in the marginal ice zone. During a one-week expedition across the continental shelf of the West Antarctic Peninsula (WAP), from the shelf break into Marguerite Bay, in January 2015, spatial heterogeneity of DMS and its precursor dimethyl sulfoniopropionate (DMSP) was studied and linked with environmental conditions, including sea-ice melt events. Concentrations of sulfur compounds, particulate organic carbon (POC) and chlorophyll a in the surface waters varied by a factor of 5–6 over the entire transect. DMS and DMSP concentrations were an order of magnitude higher than currently inferred in climatologies for the WAP region. Particulate DMSP concentrations were correlated most strongly with POC and the abundance of haptophyte algae within the phytoplankton community, which, in turn, was linked with sea-ice melt. The strong sea-ice signal in the distribution of DMS(P) implies that DMS(P) production is likely to decrease with ongoing reductions in sea-ice cover along the WAP. This has implications for feedback processes on the region's climate system. This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’. Text Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean PubMed Central (PMC) Antarctic Antarctic Peninsula Marguerite ENVELOPE(141.378,141.378,-66.787,-66.787) Marguerite Bay ENVELOPE(-68.000,-68.000,-68.500,-68.500) Southern Ocean Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 376 2122 20170169 |
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Articles Stefels, Jacqueline van Leeuwe, Maria A. Jones, Elizabeth M. Meredith, Michael P. Venables, Hugh J. Webb, Alison L. Henley, Sian F. Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula |
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Articles |
description |
The Southern Ocean is a hotspot of the climate-relevant organic sulfur compound dimethyl sulfide (DMS). Spatial and temporal variability in DMS concentration is higher than in any other oceanic region, especially in the marginal ice zone. During a one-week expedition across the continental shelf of the West Antarctic Peninsula (WAP), from the shelf break into Marguerite Bay, in January 2015, spatial heterogeneity of DMS and its precursor dimethyl sulfoniopropionate (DMSP) was studied and linked with environmental conditions, including sea-ice melt events. Concentrations of sulfur compounds, particulate organic carbon (POC) and chlorophyll a in the surface waters varied by a factor of 5–6 over the entire transect. DMS and DMSP concentrations were an order of magnitude higher than currently inferred in climatologies for the WAP region. Particulate DMSP concentrations were correlated most strongly with POC and the abundance of haptophyte algae within the phytoplankton community, which, in turn, was linked with sea-ice melt. The strong sea-ice signal in the distribution of DMS(P) implies that DMS(P) production is likely to decrease with ongoing reductions in sea-ice cover along the WAP. This has implications for feedback processes on the region's climate system. This article is part of the theme issue ‘The marine system of the West Antarctic Peninsula: status and strategy for progress in a region of rapid change’. |
format |
Text |
author |
Stefels, Jacqueline van Leeuwe, Maria A. Jones, Elizabeth M. Meredith, Michael P. Venables, Hugh J. Webb, Alison L. Henley, Sian F. |
author_facet |
Stefels, Jacqueline van Leeuwe, Maria A. Jones, Elizabeth M. Meredith, Michael P. Venables, Hugh J. Webb, Alison L. Henley, Sian F. |
author_sort |
Stefels, Jacqueline |
title |
Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula |
title_short |
Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula |
title_full |
Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula |
title_fullStr |
Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula |
title_full_unstemmed |
Impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of Marguerite Bay, West Antarctic Peninsula |
title_sort |
impact of sea-ice melt on dimethyl sulfide (sulfoniopropionate) inventories in surface waters of marguerite bay, west antarctic peninsula |
publisher |
The Royal Society Publishing |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954469/ http://www.ncbi.nlm.nih.gov/pubmed/29760113 https://doi.org/10.1098/rsta.2017.0169 |
long_lat |
ENVELOPE(141.378,141.378,-66.787,-66.787) ENVELOPE(-68.000,-68.000,-68.500,-68.500) |
geographic |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Marguerite Marguerite Bay Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Sea ice Southern Ocean |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5954469/ http://www.ncbi.nlm.nih.gov/pubmed/29760113 http://dx.doi.org/10.1098/rsta.2017.0169 |
op_rights |
© 2018 The Author(s) http://royalsocietypublishing.org/licence Published by the Royal Society. All rights reserved. |
op_doi |
https://doi.org/10.1098/rsta.2017.0169 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
376 |
container_issue |
2122 |
container_start_page |
20170169 |
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