Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic
Seasonal snow is an active media and an important climate factor that governs nutrient transfer in Arctic ecosystems. Since the snow stores and transforms nutrients and contaminants, it is of crucial importance to gain a better understanding of the dynamics of contaminant cycling within the snowpack...
Published in: | Geochimica et Cosmochimica Acta |
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Online Access: | https://archimer.ifremer.fr/doc/00018/12904/9880.pdf https://doi.org/10.1016/j.gca.2010.08.043 https://archimer.ifremer.fr/doc/00018/12904/ |
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ftarchimer:oai:archimer.ifremer.fr:12904 2023-05-15T14:56:12+02:00 Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic Larose, Catheririe Dommergue, Aurelien De Angelis, Martine Cossa, Daniel Averty, Bernard Marusczak, Nicolas Soumis, Nicolas Schneider, Dominique Ferrari, Christophe 2010-11 application/pdf https://archimer.ifremer.fr/doc/00018/12904/9880.pdf https://doi.org/10.1016/j.gca.2010.08.043 https://archimer.ifremer.fr/doc/00018/12904/ eng eng Pergamon-elsevier Science Ltd https://archimer.ifremer.fr/doc/00018/12904/9880.pdf doi:10.1016/j.gca.2010.08.043 https://archimer.ifremer.fr/doc/00018/12904/ 2010 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use Geochimica Et Cosmochimica Acta (0016-7037) (Pergamon-elsevier Science Ltd), 2010-11 , Vol. 74 , N. 22 , P. 6263-6275 text Publication info:eu-repo/semantics/article 2010 ftarchimer https://doi.org/10.1016/j.gca.2010.08.043 2021-09-23T20:18:49Z Seasonal snow is an active media and an important climate factor that governs nutrient transfer in Arctic ecosystems. Since the snow stores and transforms nutrients and contaminants, it is of crucial importance to gain a better understanding of the dynamics of contaminant cycling within the snowpack and its subsequent release to catchments via meltwater. Over the course of a two-month field study in the spring of 2008, we collected snow and meltwater samples from a seasonal snowpack in Ny-Alesund, Norway (78 degrees 56'N, 11 degrees 52'E), which were analyzed for major inorganic ions and some organic acids, as well as total, dissolved, bioavailable mercury (THg, DHg, BioHg, respectively) and monomethylmercury (MMHg) species. We observe a seasonal gradient for ion concentrations, with surface samples becoming less concentrated as the season progressed. A significant negative correlation between BioHg and MMHg was observed in the snowpack. MMHg was positively and significantly correlated to methanesulfonate concentrations. Based on these results, we propose a new model for aerobic methylation of mercury involving species in the dimethylsulfoniopropionate cycle. (C) 2010 Elsevier Ltd. All rights reserved. Article in Journal/Newspaper Arctic Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Arctic Norway Geochimica et Cosmochimica Acta 74 22 6263 6275 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Seasonal snow is an active media and an important climate factor that governs nutrient transfer in Arctic ecosystems. Since the snow stores and transforms nutrients and contaminants, it is of crucial importance to gain a better understanding of the dynamics of contaminant cycling within the snowpack and its subsequent release to catchments via meltwater. Over the course of a two-month field study in the spring of 2008, we collected snow and meltwater samples from a seasonal snowpack in Ny-Alesund, Norway (78 degrees 56'N, 11 degrees 52'E), which were analyzed for major inorganic ions and some organic acids, as well as total, dissolved, bioavailable mercury (THg, DHg, BioHg, respectively) and monomethylmercury (MMHg) species. We observe a seasonal gradient for ion concentrations, with surface samples becoming less concentrated as the season progressed. A significant negative correlation between BioHg and MMHg was observed in the snowpack. MMHg was positively and significantly correlated to methanesulfonate concentrations. Based on these results, we propose a new model for aerobic methylation of mercury involving species in the dimethylsulfoniopropionate cycle. (C) 2010 Elsevier Ltd. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Larose, Catheririe Dommergue, Aurelien De Angelis, Martine Cossa, Daniel Averty, Bernard Marusczak, Nicolas Soumis, Nicolas Schneider, Dominique Ferrari, Christophe |
spellingShingle |
Larose, Catheririe Dommergue, Aurelien De Angelis, Martine Cossa, Daniel Averty, Bernard Marusczak, Nicolas Soumis, Nicolas Schneider, Dominique Ferrari, Christophe Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic |
author_facet |
Larose, Catheririe Dommergue, Aurelien De Angelis, Martine Cossa, Daniel Averty, Bernard Marusczak, Nicolas Soumis, Nicolas Schneider, Dominique Ferrari, Christophe |
author_sort |
Larose, Catheririe |
title |
Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic |
title_short |
Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic |
title_full |
Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic |
title_fullStr |
Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic |
title_full_unstemmed |
Springtime changes in snow chemistry lead to new insights into mercury methylation in the Arctic |
title_sort |
springtime changes in snow chemistry lead to new insights into mercury methylation in the arctic |
publisher |
Pergamon-elsevier Science Ltd |
publishDate |
2010 |
url |
https://archimer.ifremer.fr/doc/00018/12904/9880.pdf https://doi.org/10.1016/j.gca.2010.08.043 https://archimer.ifremer.fr/doc/00018/12904/ |
geographic |
Arctic Norway |
geographic_facet |
Arctic Norway |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Geochimica Et Cosmochimica Acta (0016-7037) (Pergamon-elsevier Science Ltd), 2010-11 , Vol. 74 , N. 22 , P. 6263-6275 |
op_relation |
https://archimer.ifremer.fr/doc/00018/12904/9880.pdf doi:10.1016/j.gca.2010.08.043 https://archimer.ifremer.fr/doc/00018/12904/ |
op_rights |
2010 Elsevier B.V. All rights reserved. info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1016/j.gca.2010.08.043 |
container_title |
Geochimica et Cosmochimica Acta |
container_volume |
74 |
container_issue |
22 |
container_start_page |
6263 |
op_container_end_page |
6275 |
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1766328223553028096 |