Distribution of mercury species across a zonal section of the eastern tropical South Pacific Ocean (U.S. GEOTRACES GP16)
Monomethylmercury is a neurotoxin formed in the ocean that accumulates in fish. To better understand the chemical cycling of mercury (Hg) in the ocean, multiple Hg species were measured during the 2013 U.S. GEOTRACES section in the eastern tropical South Pacific Ocean (GP16) from Peru to Tahiti. Tot...
Gespeichert in:
| Veröffentlicht in: | Marine chemistry 2016-11, Vol.186, p.156-166 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 166 |
|---|---|
| container_issue | |
| container_start_page | 156 |
| container_title | Marine chemistry |
| container_volume | 186 |
| creator | Bowman, Katlin L. Hammerschmidt, Chad R. Lamborg, Carl H. Swarr, Gretchen J. Agather, Alison M. |
| description | Monomethylmercury is a neurotoxin formed in the ocean that accumulates in fish. To better understand the chemical cycling of mercury (Hg) in the ocean, multiple Hg species were measured during the 2013 U.S. GEOTRACES section in the eastern tropical South Pacific Ocean (GP16) from Peru to Tahiti. Total Hg (HgT), elemental Hg (Hg0), monomethyl-Hg (MMHg), and dimethyl-Hg (DMHg) were measured in high resolution across the section, which included productive surface waters in the Peru upwelling region, a suboxic oxygen minimum zone (OMZ), and an expansive hydrothermal vent plume from the East Pacific Rise (EPR). Filtered HgT accumulated in upwelled waters near the coast of Peru where oxygen concentrations were the lowest, and MMHg represented 10–20% of the total Hg upwelling flux. The buoyant hydrothermal plume was not enriched with Hg; however, water below 2500m had anomalously high concentrations of filtered HgT beneath the plume and in warmer bottom waters in the eastern part of the section. Elemental Hg averaged |
| doi_str_mv | 10.1016/j.marchem.2016.09.005 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1864529895</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S030442031630130X</els_id><sourcerecordid>1846420083</sourcerecordid><originalsourceid>FETCH-LOGICAL-a511t-c3210e8fbe61cc6de41b105b4e40ae8e254459e51b9a21ef4568605f4af380b3</originalsourceid><addsrcrecordid>eNqNkU9LAzEQxYMoWP98BCFHPew62U1i9iRSaxWEiq3nkE1naUq7qcmuWD-90epZT8Mw7z2Y9yPkjEHOgMnLZb42wS5wnRdpzaHKAcQeGTB1VWRXQrF9MoASeMYLKA_JUYxLAJClqAbk_dbFLri675xvqW_oGoPtw5bGDVqHkRobfEyDfvjWrGhE-6vsFkjRxA5DS7vgN86m-9T33YI-GesaZ-nEomnp-Us-zel4NJk93wxHUzp-YvLihBw0ZhXx9Gcek9ndaDa8zx4n44fhzWNmBGNdZsuCAaqmRsmslXPkrGYgao4cDCosBOeiQsHqyhQMGy6kkiAabppSQV0ek_Nd7Cb41x5jp9cuWlytTIu-j5opyUVRqUr8Q8plahBUmaRiJ_0uJ2CjN8ElCFvNQH8x0Uv9w0R_MdFQ6cQk-a53PkwfvzkMOqaSW4tzF1Kxeu7dHwmfzTiWYg</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1846420083</pqid></control><display><type>article</type><title>Distribution of mercury species across a zonal section of the eastern tropical South Pacific Ocean (U.S. GEOTRACES GP16)</title><source>Elsevier ScienceDirect Journals</source><creator>Bowman, Katlin L. ; Hammerschmidt, Chad R. ; Lamborg, Carl H. ; Swarr, Gretchen J. ; Agather, Alison M.</creator><creatorcontrib>Bowman, Katlin L. ; Hammerschmidt, Chad R. ; Lamborg, Carl H. ; Swarr, Gretchen J. ; Agather, Alison M.</creatorcontrib><description>Monomethylmercury is a neurotoxin formed in the ocean that accumulates in fish. To better understand the chemical cycling of mercury (Hg) in the ocean, multiple Hg species were measured during the 2013 U.S. GEOTRACES section in the eastern tropical South Pacific Ocean (GP16) from Peru to Tahiti. Total Hg (HgT), elemental Hg (Hg0), monomethyl-Hg (MMHg), and dimethyl-Hg (DMHg) were measured in high resolution across the section, which included productive surface waters in the Peru upwelling region, a suboxic oxygen minimum zone (OMZ), and an expansive hydrothermal vent plume from the East Pacific Rise (EPR). Filtered HgT accumulated in upwelled waters near the coast of Peru where oxygen concentrations were the lowest, and MMHg represented 10–20% of the total Hg upwelling flux. The buoyant hydrothermal plume was not enriched with Hg; however, water below 2500m had anomalously high concentrations of filtered HgT beneath the plume and in warmer bottom waters in the eastern part of the section. Elemental Hg averaged <10% of HgT in the water column and concentrations were greatest near the Peru margin. Concentrations of MMHg and DMHg were greatest in low-oxygen thermocline waters, and in the upwelling region, vertical maxima of MMHg were found at the top, core, and bottom of the suboxic OMZ. The MMHg:DMHg molar ratio was variable throughout the upper water column, however, DMHg was the dominant form of methylated Hg in deep water masses. This section is the first examination of Hg speciation and distributions near the Peru coast, a region that supports a highly productive fishery and a potential source of MMHg to consumers of seafood.
•Total mercury was enriched in the Peru upwelling region and up to 20% of the upwelling flux was as monomethyl-mercury.•Subsurface maxima of monomethyl-mercury and dimethyl-mercury were found in oxic and suboxic water.•Methylated mercury concentrations were greatest in the eastern part of the section underlying productive surface waters.•Mercury was not elevated in a metal-rich hydrothermal vent plume extending 4000km west from the East Pacific Rise.•Deep water below 2500m was enriched with Hg, especially in warm bottom waters in the eastern part of the section.</description><identifier>ISSN: 0304-4203</identifier><identifier>EISSN: 1872-7581</identifier><identifier>DOI: 10.1016/j.marchem.2016.09.005</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Hydrothermal plumes ; Marine ; Mercury ; Mercury (metal) ; Methyl mercury ; Oceans ; Oxygen ; Oxygen minimum layer ; Pacific Ocean ; Upwelling ; Water circulation ; Water purification</subject><ispartof>Marine chemistry, 2016-11, Vol.186, p.156-166</ispartof><rights>2016 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a511t-c3210e8fbe61cc6de41b105b4e40ae8e254459e51b9a21ef4568605f4af380b3</citedby><cites>FETCH-LOGICAL-a511t-c3210e8fbe61cc6de41b105b4e40ae8e254459e51b9a21ef4568605f4af380b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S030442031630130X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Bowman, Katlin L.</creatorcontrib><creatorcontrib>Hammerschmidt, Chad R.</creatorcontrib><creatorcontrib>Lamborg, Carl H.</creatorcontrib><creatorcontrib>Swarr, Gretchen J.</creatorcontrib><creatorcontrib>Agather, Alison M.</creatorcontrib><title>Distribution of mercury species across a zonal section of the eastern tropical South Pacific Ocean (U.S. GEOTRACES GP16)</title><title>Marine chemistry</title><description>Monomethylmercury is a neurotoxin formed in the ocean that accumulates in fish. To better understand the chemical cycling of mercury (Hg) in the ocean, multiple Hg species were measured during the 2013 U.S. GEOTRACES section in the eastern tropical South Pacific Ocean (GP16) from Peru to Tahiti. Total Hg (HgT), elemental Hg (Hg0), monomethyl-Hg (MMHg), and dimethyl-Hg (DMHg) were measured in high resolution across the section, which included productive surface waters in the Peru upwelling region, a suboxic oxygen minimum zone (OMZ), and an expansive hydrothermal vent plume from the East Pacific Rise (EPR). Filtered HgT accumulated in upwelled waters near the coast of Peru where oxygen concentrations were the lowest, and MMHg represented 10–20% of the total Hg upwelling flux. The buoyant hydrothermal plume was not enriched with Hg; however, water below 2500m had anomalously high concentrations of filtered HgT beneath the plume and in warmer bottom waters in the eastern part of the section. Elemental Hg averaged <10% of HgT in the water column and concentrations were greatest near the Peru margin. Concentrations of MMHg and DMHg were greatest in low-oxygen thermocline waters, and in the upwelling region, vertical maxima of MMHg were found at the top, core, and bottom of the suboxic OMZ. The MMHg:DMHg molar ratio was variable throughout the upper water column, however, DMHg was the dominant form of methylated Hg in deep water masses. This section is the first examination of Hg speciation and distributions near the Peru coast, a region that supports a highly productive fishery and a potential source of MMHg to consumers of seafood.
•Total mercury was enriched in the Peru upwelling region and up to 20% of the upwelling flux was as monomethyl-mercury.•Subsurface maxima of monomethyl-mercury and dimethyl-mercury were found in oxic and suboxic water.•Methylated mercury concentrations were greatest in the eastern part of the section underlying productive surface waters.•Mercury was not elevated in a metal-rich hydrothermal vent plume extending 4000km west from the East Pacific Rise.•Deep water below 2500m was enriched with Hg, especially in warm bottom waters in the eastern part of the section.</description><subject>Hydrothermal plumes</subject><subject>Marine</subject><subject>Mercury</subject><subject>Mercury (metal)</subject><subject>Methyl mercury</subject><subject>Oceans</subject><subject>Oxygen</subject><subject>Oxygen minimum layer</subject><subject>Pacific Ocean</subject><subject>Upwelling</subject><subject>Water circulation</subject><subject>Water purification</subject><issn>0304-4203</issn><issn>1872-7581</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNkU9LAzEQxYMoWP98BCFHPew62U1i9iRSaxWEiq3nkE1naUq7qcmuWD-90epZT8Mw7z2Y9yPkjEHOgMnLZb42wS5wnRdpzaHKAcQeGTB1VWRXQrF9MoASeMYLKA_JUYxLAJClqAbk_dbFLri675xvqW_oGoPtw5bGDVqHkRobfEyDfvjWrGhE-6vsFkjRxA5DS7vgN86m-9T33YI-GesaZ-nEomnp-Us-zel4NJk93wxHUzp-YvLihBw0ZhXx9Gcek9ndaDa8zx4n44fhzWNmBGNdZsuCAaqmRsmslXPkrGYgao4cDCosBOeiQsHqyhQMGy6kkiAabppSQV0ek_Nd7Cb41x5jp9cuWlytTIu-j5opyUVRqUr8Q8plahBUmaRiJ_0uJ2CjN8ElCFvNQH8x0Uv9w0R_MdFQ6cQk-a53PkwfvzkMOqaSW4tzF1Kxeu7dHwmfzTiWYg</recordid><startdate>20161120</startdate><enddate>20161120</enddate><creator>Bowman, Katlin L.</creator><creator>Hammerschmidt, Chad R.</creator><creator>Lamborg, Carl H.</creator><creator>Swarr, Gretchen J.</creator><creator>Agather, Alison M.</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TN</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20161120</creationdate><title>Distribution of mercury species across a zonal section of the eastern tropical South Pacific Ocean (U.S. GEOTRACES GP16)</title><author>Bowman, Katlin L. ; Hammerschmidt, Chad R. ; Lamborg, Carl H. ; Swarr, Gretchen J. ; Agather, Alison M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a511t-c3210e8fbe61cc6de41b105b4e40ae8e254459e51b9a21ef4568605f4af380b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Hydrothermal plumes</topic><topic>Marine</topic><topic>Mercury</topic><topic>Mercury (metal)</topic><topic>Methyl mercury</topic><topic>Oceans</topic><topic>Oxygen</topic><topic>Oxygen minimum layer</topic><topic>Pacific Ocean</topic><topic>Upwelling</topic><topic>Water circulation</topic><topic>Water purification</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bowman, Katlin L.</creatorcontrib><creatorcontrib>Hammerschmidt, Chad R.</creatorcontrib><creatorcontrib>Lamborg, Carl H.</creatorcontrib><creatorcontrib>Swarr, Gretchen J.</creatorcontrib><creatorcontrib>Agather, Alison M.</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Marine chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bowman, Katlin L.</au><au>Hammerschmidt, Chad R.</au><au>Lamborg, Carl H.</au><au>Swarr, Gretchen J.</au><au>Agather, Alison M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Distribution of mercury species across a zonal section of the eastern tropical South Pacific Ocean (U.S. GEOTRACES GP16)</atitle><jtitle>Marine chemistry</jtitle><date>2016-11-20</date><risdate>2016</risdate><volume>186</volume><spage>156</spage><epage>166</epage><pages>156-166</pages><issn>0304-4203</issn><eissn>1872-7581</eissn><abstract>Monomethylmercury is a neurotoxin formed in the ocean that accumulates in fish. To better understand the chemical cycling of mercury (Hg) in the ocean, multiple Hg species were measured during the 2013 U.S. GEOTRACES section in the eastern tropical South Pacific Ocean (GP16) from Peru to Tahiti. Total Hg (HgT), elemental Hg (Hg0), monomethyl-Hg (MMHg), and dimethyl-Hg (DMHg) were measured in high resolution across the section, which included productive surface waters in the Peru upwelling region, a suboxic oxygen minimum zone (OMZ), and an expansive hydrothermal vent plume from the East Pacific Rise (EPR). Filtered HgT accumulated in upwelled waters near the coast of Peru where oxygen concentrations were the lowest, and MMHg represented 10–20% of the total Hg upwelling flux. The buoyant hydrothermal plume was not enriched with Hg; however, water below 2500m had anomalously high concentrations of filtered HgT beneath the plume and in warmer bottom waters in the eastern part of the section. Elemental Hg averaged <10% of HgT in the water column and concentrations were greatest near the Peru margin. Concentrations of MMHg and DMHg were greatest in low-oxygen thermocline waters, and in the upwelling region, vertical maxima of MMHg were found at the top, core, and bottom of the suboxic OMZ. The MMHg:DMHg molar ratio was variable throughout the upper water column, however, DMHg was the dominant form of methylated Hg in deep water masses. This section is the first examination of Hg speciation and distributions near the Peru coast, a region that supports a highly productive fishery and a potential source of MMHg to consumers of seafood.
•Total mercury was enriched in the Peru upwelling region and up to 20% of the upwelling flux was as monomethyl-mercury.•Subsurface maxima of monomethyl-mercury and dimethyl-mercury were found in oxic and suboxic water.•Methylated mercury concentrations were greatest in the eastern part of the section underlying productive surface waters.•Mercury was not elevated in a metal-rich hydrothermal vent plume extending 4000km west from the East Pacific Rise.•Deep water below 2500m was enriched with Hg, especially in warm bottom waters in the eastern part of the section.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.marchem.2016.09.005</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0304-4203 |
| ispartof | Marine chemistry, 2016-11, Vol.186, p.156-166 |
| issn | 0304-4203 1872-7581 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1864529895 |
| source | Elsevier ScienceDirect Journals |
| subjects | Hydrothermal plumes Marine Mercury Mercury (metal) Methyl mercury Oceans Oxygen Oxygen minimum layer Pacific Ocean Upwelling Water circulation Water purification |
| title | Distribution of mercury species across a zonal section of the eastern tropical South Pacific Ocean (U.S. GEOTRACES GP16) |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-06T10%3A16%3A37IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Distribution%20of%20mercury%20species%20across%20a%20zonal%20section%20of%20the%20eastern%20tropical%20South%20Pacific%20Ocean%20(U.S.%20GEOTRACES%20GP16)&rft.jtitle=Marine%20chemistry&rft.au=Bowman,%20Katlin%20L.&rft.date=2016-11-20&rft.volume=186&rft.spage=156&rft.epage=166&rft.pages=156-166&rft.issn=0304-4203&rft.eissn=1872-7581&rft_id=info:doi/10.1016/j.marchem.2016.09.005&rft_dat=%3Cproquest_cross%3E1846420083%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1846420083&rft_id=info:pmid/&rft_els_id=S030442031630130X&rfr_iscdi=true |