The anaerobic oxidation of methane and sulfate reduction in sediments from Gulf of Mexico cold seeps
We determined the geochemical characteristics of sediments and measured rates of the anaerobic oxidation of methane (AOM) and sulfate reduction (SR) in samples collected near thermogenic (structure II) gas hydrate mounds and in areas lacking hydrates along the continental slope in the Gulf of Mexico...
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| Veröffentlicht in: | Chemical geology 2004-05, Vol.205 (3), p.219-238 |
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| creator | Joye, Samantha B Boetius, Antje Orcutt, Beth N Montoya, Joseph P Schulz, Heide N Erickson, Matthew J Lugo, Samantha K |
| description | We determined the geochemical characteristics of sediments and measured rates of the anaerobic oxidation of methane (AOM) and sulfate reduction (SR) in samples collected near thermogenic (structure II) gas hydrate mounds and in areas lacking hydrates along the continental slope in the Gulf of Mexico. We used radiotracer (C-14 and S-35) techniques to determine rates of AOM and SR over depth in sediment cores. Abundant mats of white and orange
Beggiatoa spp. were common in areas of active seepage and these sediments were enriched in hydrogen sulfide and methane. In cores collected from areas without
Beggiatoa or hydrate, concentrations of redox metabolites showed little variation over depth and these sites were inferred to be areas of low seepage. Integrated AOM rates were low in
Beggiatoa-free cores ( |
| doi_str_mv | 10.1016/j.chemgeo.2003.12.019 |
| format | Article |
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Beggiatoa spp. were common in areas of active seepage and these sediments were enriched in hydrogen sulfide and methane. In cores collected from areas without
Beggiatoa or hydrate, concentrations of redox metabolites showed little variation over depth and these sites were inferred to be areas of low seepage. Integrated AOM rates were low in
Beggiatoa-free cores (<0.05 mmol m
−2 day
−1) and averaged 2.8±4.6 mmol m
−2 day
−1 in seep cores that contained
Beggiatoa or gas hydrate. Integrated SR rates were also low in
Beggiatoa-free cores (<1 mmol m
−2 day
−1) and averaged 54±94 mmol m
−2 day
−1 in cores with
Beggiatoa or hydrate. Rates of SR generally exceeded rates of AOM and the two processes were loosely coupled, suggesting that the majority of SR at Gulf of Mexico hydrocarbon seep sites is likely fueled by the oxidation of other organic matter, possibly other hydrocarbons and oil, rather than by AOM.</description><identifier>ISSN: 0009-2541</identifier><identifier>EISSN: 1872-6836</identifier><identifier>DOI: 10.1016/j.chemgeo.2003.12.019</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Anaerobic oxidation of methane ; Beggiatoa ; Cold seeps ; Marine ; Nutrients ; Sulfate reduction</subject><ispartof>Chemical geology, 2004-05, Vol.205 (3), p.219-238</ispartof><rights>2004 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a427t-f35787b001526dff17b92edf2f2db03c1c83ee6c4e1c2f74202fc6ad076c7af33</citedby><cites>FETCH-LOGICAL-a427t-f35787b001526dff17b92edf2f2db03c1c83ee6c4e1c2f74202fc6ad076c7af33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S000925410400004X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Joye, Samantha B</creatorcontrib><creatorcontrib>Boetius, Antje</creatorcontrib><creatorcontrib>Orcutt, Beth N</creatorcontrib><creatorcontrib>Montoya, Joseph P</creatorcontrib><creatorcontrib>Schulz, Heide N</creatorcontrib><creatorcontrib>Erickson, Matthew J</creatorcontrib><creatorcontrib>Lugo, Samantha K</creatorcontrib><title>The anaerobic oxidation of methane and sulfate reduction in sediments from Gulf of Mexico cold seeps</title><title>Chemical geology</title><description>We determined the geochemical characteristics of sediments and measured rates of the anaerobic oxidation of methane (AOM) and sulfate reduction (SR) in samples collected near thermogenic (structure II) gas hydrate mounds and in areas lacking hydrates along the continental slope in the Gulf of Mexico. We used radiotracer (C-14 and S-35) techniques to determine rates of AOM and SR over depth in sediment cores. Abundant mats of white and orange
Beggiatoa spp. were common in areas of active seepage and these sediments were enriched in hydrogen sulfide and methane. In cores collected from areas without
Beggiatoa or hydrate, concentrations of redox metabolites showed little variation over depth and these sites were inferred to be areas of low seepage. Integrated AOM rates were low in
Beggiatoa-free cores (<0.05 mmol m
−2 day
−1) and averaged 2.8±4.6 mmol m
−2 day
−1 in seep cores that contained
Beggiatoa or gas hydrate. Integrated SR rates were also low in
Beggiatoa-free cores (<1 mmol m
−2 day
−1) and averaged 54±94 mmol m
−2 day
−1 in cores with
Beggiatoa or hydrate. Rates of SR generally exceeded rates of AOM and the two processes were loosely coupled, suggesting that the majority of SR at Gulf of Mexico hydrocarbon seep sites is likely fueled by the oxidation of other organic matter, possibly other hydrocarbons and oil, rather than by AOM.</description><subject>Anaerobic oxidation of methane</subject><subject>Beggiatoa</subject><subject>Cold seeps</subject><subject>Marine</subject><subject>Nutrients</subject><subject>Sulfate reduction</subject><issn>0009-2541</issn><issn>1872-6836</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqFkM1OwzAQhC0EEqXwCEg-cUvwTxKnJ4QqKEhFXMrZcuw1dZXExU5QeXsc2jun1WpnRjsfQreU5JTQ6n6X6y10n-BzRgjPKcsJXZyhGa0Fy6qaV-doRghZZKws6CW6inGXVsrLcobMZgtY9QqCb5zG_uCMGpzvsbe4g2Gr-ulscBxbqwbAAcyo_wSuxxGM66AfIrbBd3iVNJPvDQ5Oe6x9m3wA-3iNLqxqI9yc5hx9PD9tli_Z-n31unxcZ6pgYsgsL0UtmvRaySpjLRXNgoGxzDLTEK6prjlApQugmllRMMKsrpQhotJCWc7n6O6Yuw_-a4Q4yM5FDW2bWvgxSlpRURJRJmF5FOrgYwxg5T64ToUfSYmcmMqdPDGVE1NJmUxMk-_h6IPU4ttBkFE76HXiEEAP0nj3T8Iv3DSD4g</recordid><startdate>20040514</startdate><enddate>20040514</enddate><creator>Joye, Samantha B</creator><creator>Boetius, Antje</creator><creator>Orcutt, Beth N</creator><creator>Montoya, Joseph P</creator><creator>Schulz, Heide N</creator><creator>Erickson, Matthew J</creator><creator>Lugo, Samantha K</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>7TV</scope><scope>C1K</scope><scope>F1W</scope><scope>H95</scope><scope>H96</scope><scope>L.G</scope></search><sort><creationdate>20040514</creationdate><title>The anaerobic oxidation of methane and sulfate reduction in sediments from Gulf of Mexico cold seeps</title><author>Joye, Samantha B ; Boetius, Antje ; Orcutt, Beth N ; Montoya, Joseph P ; Schulz, Heide N ; Erickson, Matthew J ; Lugo, Samantha K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a427t-f35787b001526dff17b92edf2f2db03c1c83ee6c4e1c2f74202fc6ad076c7af33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Anaerobic oxidation of methane</topic><topic>Beggiatoa</topic><topic>Cold seeps</topic><topic>Marine</topic><topic>Nutrients</topic><topic>Sulfate reduction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Joye, Samantha B</creatorcontrib><creatorcontrib>Boetius, Antje</creatorcontrib><creatorcontrib>Orcutt, Beth N</creatorcontrib><creatorcontrib>Montoya, Joseph P</creatorcontrib><creatorcontrib>Schulz, Heide N</creatorcontrib><creatorcontrib>Erickson, Matthew J</creatorcontrib><creatorcontrib>Lugo, Samantha K</creatorcontrib><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>Pollution Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Chemical geology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Joye, Samantha B</au><au>Boetius, Antje</au><au>Orcutt, Beth N</au><au>Montoya, Joseph P</au><au>Schulz, Heide N</au><au>Erickson, Matthew J</au><au>Lugo, Samantha K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The anaerobic oxidation of methane and sulfate reduction in sediments from Gulf of Mexico cold seeps</atitle><jtitle>Chemical geology</jtitle><date>2004-05-14</date><risdate>2004</risdate><volume>205</volume><issue>3</issue><spage>219</spage><epage>238</epage><pages>219-238</pages><issn>0009-2541</issn><eissn>1872-6836</eissn><abstract>We determined the geochemical characteristics of sediments and measured rates of the anaerobic oxidation of methane (AOM) and sulfate reduction (SR) in samples collected near thermogenic (structure II) gas hydrate mounds and in areas lacking hydrates along the continental slope in the Gulf of Mexico. We used radiotracer (C-14 and S-35) techniques to determine rates of AOM and SR over depth in sediment cores. Abundant mats of white and orange
Beggiatoa spp. were common in areas of active seepage and these sediments were enriched in hydrogen sulfide and methane. In cores collected from areas without
Beggiatoa or hydrate, concentrations of redox metabolites showed little variation over depth and these sites were inferred to be areas of low seepage. Integrated AOM rates were low in
Beggiatoa-free cores (<0.05 mmol m
−2 day
−1) and averaged 2.8±4.6 mmol m
−2 day
−1 in seep cores that contained
Beggiatoa or gas hydrate. Integrated SR rates were also low in
Beggiatoa-free cores (<1 mmol m
−2 day
−1) and averaged 54±94 mmol m
−2 day
−1 in cores with
Beggiatoa or hydrate. Rates of SR generally exceeded rates of AOM and the two processes were loosely coupled, suggesting that the majority of SR at Gulf of Mexico hydrocarbon seep sites is likely fueled by the oxidation of other organic matter, possibly other hydrocarbons and oil, rather than by AOM.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.chemgeo.2003.12.019</doi><tpages>20</tpages></addata></record> |
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| language | eng |
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| subjects | Anaerobic oxidation of methane Beggiatoa Cold seeps Marine Nutrients Sulfate reduction |
| title | The anaerobic oxidation of methane and sulfate reduction in sediments from Gulf of Mexico cold seeps |
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