Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)
Identifieur interne : 000434 ( Istex/Corpus ); précédent : 000433; suivant : 000435Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)
Auteurs : W. D Lessandro ; L. Brusca ; K. Kyriakopoulos ; M. Martelli ; G. Michas ; G. Papadakis ; F. SalernoSource :
- Geofluids [ 1468-8115 ] ; 2011-02.
English descriptors
- KwdEn :
- Atmospheric gases, Atmospheric methane, Bender conrad, Biological activity, Blackwell publishing, Carbon dioxide, Castaldi, Castaldi tedesco, Chamber method, Climate change, Concentration ratio, Consumption experiments, Consumption rate, Consumption rates, Deeper levels, Degassing, Diffuse hydrothermal methane output, Endogenous gases, Environmental microbiology, Etiope, Gaseous manifestations, Geogenic gases, Geophysical research letters, Geothermal, Geothermal areas, Geothermal research, Geothermal system, Global biogeochemical cycles, Global change biology, Harsh conditions, High consumption rates, High values, Hydrothermal, Hydrothermal alteration, Hydrothermal system, Hydrothermal systems, Intergovernmental panel, Laboratory incubation experiments, Lmol, Measurement campaigns, Measurement site, Mediterranean area, Methane, Methane emissions, Methane oxidation, Methanotrophic, Methanotrophic activity, Methanotrophic activity decreases, Methanotrophic bacteria, Methanotrophic microorganisms, Microorganism, Negative values, Ophiolithic rocks, Oxidation activity, Pantelleria island, Phylum verrucomicrobia, Pmolch4, Positive values, Present study, Previous estimates, Previous studies, Recent studies, Same order, Sampling sites, Soil gases, Soil sample, Soil samples, Sousaki, Southern italy, Study area, Such conditions, Such environments, Thermophilic methanotrophic bacteria, Uxes, Volcanic, Vulcanologia sezione, Water vapour, Water vapour output data.
- Teeft :
- Atmospheric gases, Atmospheric methane, Bender conrad, Biological activity, Blackwell publishing, Carbon dioxide, Castaldi, Castaldi tedesco, Chamber method, Climate change, Concentration ratio, Consumption experiments, Consumption rate, Consumption rates, Deeper levels, Degassing, Diffuse hydrothermal methane output, Endogenous gases, Environmental microbiology, Etiope, Gaseous manifestations, Geogenic gases, Geophysical research letters, Geothermal, Geothermal areas, Geothermal research, Geothermal system, Global biogeochemical cycles, Global change biology, Harsh conditions, High consumption rates, High values, Hydrothermal, Hydrothermal alteration, Hydrothermal system, Hydrothermal systems, Intergovernmental panel, Laboratory incubation experiments, Lmol, Measurement campaigns, Measurement site, Mediterranean area, Methane, Methane emissions, Methane oxidation, Methanotrophic, Methanotrophic activity, Methanotrophic activity decreases, Methanotrophic bacteria, Methanotrophic microorganisms, Microorganism, Negative values, Ophiolithic rocks, Oxidation activity, Pantelleria island, Phylum verrucomicrobia, Pmolch4, Positive values, Present study, Previous estimates, Previous studies, Recent studies, Same order, Sampling sites, Soil gases, Soil sample, Soil samples, Sousaki, Southern italy, Study area, Such conditions, Such environments, Thermophilic methanotrophic bacteria, Uxes, Volcanic, Vulcanologia sezione, Water vapour, Water vapour output data.
Abstract
Methane soil flux measurements have been made in 38 sites at the geothermal system of Sousaki (Greece) with the closed chamber method. Fluxes range from −47.6 to 29 150 mg m−2 day−1, and the diffuse CH4 output of the system has been estimated at 19 t a−1. Contemporaneous CO2 flux measurements showed a moderate positive correlation between CO2 and CH4 fluxes. Comparison of the CO2/CH4 soil flux ratios with the CO2/CH4 ratio of the gases of the main gas manifestations provided evidence for methanotrophic activity within the soil. Laboratory CH4 consumption experiments confirmed the presence of methanotrophic microorganisms in soil samples collected at Sousaki. Consumption was generally in the range from −4.9 to −38.9 pmolCH4 h−1 g−1 but could sometimes reach extremely high values (−33 000 pmolCH4 h−1 g−1). These results are consistent with recent studies on other geothermal systems that revealed the existence of thermoacidophilic bacteria exerting methanotrophic activity in hot, acid soils, thereby reducing methane emissions to the atmosphere.
Url:
DOI: 10.1111/j.1468-8123.2010.00322.x
Links to Exploration step
ISTEX:64EF07155222FFCB260EE99EB9823AF98D6D88EFLe document en format XML
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methane</term><term>Bender conrad</term><term>Biological activity</term><term>Blackwell publishing</term><term>Carbon dioxide</term><term>Castaldi</term><term>Castaldi tedesco</term><term>Chamber method</term><term>Climate change</term><term>Concentration ratio</term><term>Consumption experiments</term><term>Consumption rate</term><term>Consumption rates</term><term>Deeper levels</term><term>Degassing</term><term>Diffuse hydrothermal methane output</term><term>Endogenous gases</term><term>Environmental microbiology</term><term>Etiope</term><term>Gaseous manifestations</term><term>Geogenic gases</term><term>Geophysical research letters</term><term>Geothermal</term><term>Geothermal areas</term><term>Geothermal research</term><term>Geothermal system</term><term>Global biogeochemical cycles</term><term>Global change biology</term><term>Harsh conditions</term><term>High consumption rates</term><term>High values</term><term>Hydrothermal</term><term>Hydrothermal alteration</term><term>Hydrothermal system</term><term>Hydrothermal systems</term><term>Intergovernmental panel</term><term>Laboratory incubation experiments</term><term>Lmol</term><term>Measurement campaigns</term><term>Measurement site</term><term>Mediterranean area</term><term>Methane</term><term>Methane emissions</term><term>Methane oxidation</term><term>Methanotrophic</term><term>Methanotrophic activity</term><term>Methanotrophic activity decreases</term><term>Methanotrophic bacteria</term><term>Methanotrophic microorganisms</term><term>Microorganism</term><term>Negative values</term><term>Ophiolithic rocks</term><term>Oxidation activity</term><term>Pantelleria island</term><term>Phylum verrucomicrobia</term><term>Pmolch4</term><term>Positive values</term><term>Present study</term><term>Previous estimates</term><term>Previous studies</term><term>Recent studies</term><term>Same order</term><term>Sampling sites</term><term>Soil gases</term><term>Soil sample</term><term>Soil samples</term><term>Sousaki</term><term>Southern italy</term><term>Study area</term><term>Such conditions</term><term>Such environments</term><term>Thermophilic methanotrophic bacteria</term><term>Uxes</term><term>Volcanic</term><term>Vulcanologia sezione</term><term>Water vapour</term><term>Water vapour output data</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Atmospheric gases</term><term>Atmospheric methane</term><term>Bender conrad</term><term>Biological activity</term><term>Blackwell publishing</term><term>Carbon dioxide</term><term>Castaldi</term><term>Castaldi tedesco</term><term>Chamber method</term><term>Climate change</term><term>Concentration ratio</term><term>Consumption experiments</term><term>Consumption rate</term><term>Consumption rates</term><term>Deeper levels</term><term>Degassing</term><term>Diffuse hydrothermal methane output</term><term>Endogenous gases</term><term>Environmental microbiology</term><term>Etiope</term><term>Gaseous manifestations</term><term>Geogenic gases</term><term>Geophysical research letters</term><term>Geothermal</term><term>Geothermal areas</term><term>Geothermal research</term><term>Geothermal system</term><term>Global biogeochemical cycles</term><term>Global change biology</term><term>Harsh conditions</term><term>High consumption rates</term><term>High values</term><term>Hydrothermal</term><term>Hydrothermal alteration</term><term>Hydrothermal system</term><term>Hydrothermal systems</term><term>Intergovernmental panel</term><term>Laboratory incubation experiments</term><term>Lmol</term><term>Measurement campaigns</term><term>Measurement site</term><term>Mediterranean area</term><term>Methane</term><term>Methane emissions</term><term>Methane oxidation</term><term>Methanotrophic</term><term>Methanotrophic activity</term><term>Methanotrophic activity decreases</term><term>Methanotrophic bacteria</term><term>Methanotrophic microorganisms</term><term>Microorganism</term><term>Negative values</term><term>Ophiolithic rocks</term><term>Oxidation activity</term><term>Pantelleria island</term><term>Phylum verrucomicrobia</term><term>Pmolch4</term><term>Positive values</term><term>Present study</term><term>Previous estimates</term><term>Previous studies</term><term>Recent studies</term><term>Same order</term><term>Sampling sites</term><term>Soil gases</term><term>Soil sample</term><term>Soil samples</term><term>Sousaki</term><term>Southern italy</term><term>Study area</term><term>Such conditions</term><term>Such environments</term><term>Thermophilic methanotrophic bacteria</term><term>Uxes</term><term>Volcanic</term><term>Vulcanologia sezione</term><term>Water vapour</term><term>Water vapour output data</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Methane soil flux measurements have been made in 38 sites at the geothermal system of Sousaki (Greece) with the closed chamber method. Fluxes range from −47.6 to 29 150 mg m−2 day−1, and the diffuse CH4 output of the system has been estimated at 19 t a−1. Contemporaneous CO2 flux measurements showed a moderate positive correlation between CO2 and CH4 fluxes. Comparison of the CO2/CH4 soil flux ratios with the CO2/CH4 ratio of the gases of the main gas manifestations provided evidence for methanotrophic activity within the soil. Laboratory CH4 consumption experiments confirmed the presence of methanotrophic microorganisms in soil samples collected at Sousaki. Consumption was generally in the range from −4.9 to −38.9 pmolCH4 h−1 g−1 but could sometimes reach extremely high values (−33 000 pmolCH4 h−1 g−1). These results are consistent with recent studies on other geothermal systems that revealed the existence of thermoacidophilic bacteria exerting methanotrophic activity in hot, acid soils, thereby reducing methane emissions to the atmosphere.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>methane</json:string><json:string>methanotrophic</json:string><json:string>sousaki</json:string><json:string>uxes</json:string><json:string>methanotrophic activity</json:string><json:string>hydrothermal</json:string><json:string>lmol</json:string><json:string>geothermal</json:string><json:string>degassing</json:string><json:string>soil samples</json:string><json:string>blackwell publishing</json:string><json:string>pmolch4</json:string><json:string>etiope</json:string><json:string>castaldi</json:string><json:string>geothermal system</json:string><json:string>consumption rates</json:string><json:string>diffuse hydrothermal methane output</json:string><json:string>geophysical research letters</json:string><json:string>carbon dioxide</json:string><json:string>methane oxidation</json:string><json:string>consumption rate</json:string><json:string>laboratory incubation experiments</json:string><json:string>methanotrophic microorganisms</json:string><json:string>climate change</json:string><json:string>soil gases</json:string><json:string>methanotrophic bacteria</json:string><json:string>microorganism</json:string><json:string>volcanic</json:string><json:string>hydrothermal system</json:string><json:string>castaldi tedesco</json:string><json:string>bender conrad</json:string><json:string>phylum verrucomicrobia</json:string><json:string>study area</json:string><json:string>negative values</json:string><json:string>intergovernmental panel</json:string><json:string>soil sample</json:string><json:string>high values</json:string><json:string>previous estimates</json:string><json:string>consumption experiments</json:string><json:string>gaseous manifestations</json:string><json:string>oxidation activity</json:string><json:string>atmospheric gases</json:string><json:string>hydrothermal alteration</json:string><json:string>measurement site</json:string><json:string>sampling sites</json:string><json:string>positive values</json:string><json:string>endogenous gases</json:string><json:string>thermophilic methanotrophic bacteria</json:string><json:string>hydrothermal systems</json:string><json:string>biological activity</json:string><json:string>previous studies</json:string><json:string>methane emissions</json:string><json:string>geogenic gases</json:string><json:string>ophiolithic rocks</json:string><json:string>mediterranean area</json:string><json:string>same order</json:string><json:string>measurement campaigns</json:string><json:string>such conditions</json:string><json:string>high consumption rates</json:string><json:string>concentration ratio</json:string><json:string>water vapour output data</json:string><json:string>recent studies</json:string><json:string>deeper levels</json:string><json:string>geothermal areas</json:string><json:string>such environments</json:string><json:string>methanotrophic activity decreases</json:string><json:string>harsh conditions</json:string><json:string>present study</json:string><json:string>water vapour</json:string><json:string>pantelleria island</json:string><json:string>southern italy</json:string><json:string>chamber method</json:string><json:string>geothermal research</json:string><json:string>vulcanologia sezione</json:string><json:string>global biogeochemical cycles</json:string><json:string>environmental microbiology</json:string><json:string>atmospheric methane</json:string><json:string>global change biology</json:string></teeft></keywords><author><json:item><name>W. D’ALESSANDRO</name><affiliations><json:string>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</json:string></affiliations></json:item><json:item><name>L. BRUSCA</name><affiliations><json:string>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</json:string></affiliations></json:item><json:item><name>K. KYRIAKOPOULOS</name><affiliations><json:string>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</json:string></affiliations></json:item><json:item><name>M. MARTELLI</name><affiliations><json:string>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</json:string></affiliations></json:item><json:item><name>G. MICHAS</name><affiliations><json:string>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</json:string></affiliations></json:item><json:item><name>G. PAPADAKIS</name><affiliations><json:string>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</json:string></affiliations></json:item><json:item><name>F. SALERNO</name><affiliations><json:string>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>accumulation chamber</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>hydrothermal systems</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>methane output</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>methanotrophic activity</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>soil degassing</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Sousaki</value></json:item></subject><articleId><json:string>GFL322</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Methane soil flux measurements have been made in 38 sites at the geothermal system of Sousaki (Greece) with the closed chamber method. Fluxes range from −47.6 to 29 150 mg m−2 day−1, and the diffuse CH4 output of the system has been estimated at 19 t a−1. Contemporaneous CO2 flux measurements showed a moderate positive correlation between CO2 and CH4 fluxes. Comparison of the CO2/CH4 soil flux ratios with the CO2/CH4 ratio of the gases of the main gas manifestations provided evidence for methanotrophic activity within the soil. Laboratory CH4 consumption experiments confirmed the presence of methanotrophic microorganisms in soil samples collected at Sousaki. Consumption was generally in the range from −4.9 to −38.9 pmolCH4 h−1 g−1 but could sometimes reach extremely high values (−33 000 pmolCH4 h−1 g−1). These results are consistent with recent studies on other geothermal systems that revealed the existence of thermoacidophilic bacteria exerting methanotrophic activity in hot, acid soils, thereby reducing methane emissions to the atmosphere.</abstract><qualityIndicators><score>6.776</score><pdfVersion>1.3</pdfVersion><pdfPageSize>595.276 x 793.701 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractCharCount>1057</abstractCharCount><pdfWordCount>6200</pdfWordCount><pdfCharCount>39960</pdfCharCount><pdfPageCount>11</pdfPageCount><abstractWordCount>148</abstractWordCount></qualityIndicators><title>Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki 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uri="https://api.istex.fr/document/64EF07155222FFCB260EE99EB9823AF98D6D88EF/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)</title></titleStmt><publicationStmt><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><availability><licence>© 2011 Blackwell Publishing Ltd</licence></availability><date type="published" when="2011-02"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)</title><title level="a" type="short">Diffuse hydrothermal methane output at Sousaki (Greece)</title><author xml:id="author-0000"><persName><forename type="first">W.</forename><surname>D’ALESSANDRO</surname></persName><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy<address><country key="IT"></country></address></affiliation></author><author xml:id="author-0001"><persName><forename type="first">L.</forename><surname>BRUSCA</surname></persName><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy<address><country key="IT"></country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">K.</forename><surname>KYRIAKOPOULOS</surname></persName><affiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece<address><country key="GR"></country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">M.</forename><surname>MARTELLI</surname></persName><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy<address><country key="IT"></country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">G.</forename><surname>MICHAS</surname></persName><affiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece<address><country key="GR"></country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">G.</forename><surname>PAPADAKIS</surname></persName><affiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece<address><country key="GR"></country></address></affiliation></author><author xml:id="author-0006"><persName><forename type="first">F.</forename><surname>SALERNO</surname></persName><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy<address><country key="IT"></country></address></affiliation></author><idno type="istex">64EF07155222FFCB260EE99EB9823AF98D6D88EF</idno><idno type="DOI">10.1111/j.1468-8123.2010.00322.x</idno><idno type="unit">GFL322</idno><idno type="toTypesetVersion">file:GFL.GFL322.pdf</idno></analytic><monogr><title level="j" type="main">Geofluids</title><title level="j" type="alt">GEOFLUIDS</title><idno type="pISSN">1468-8115</idno><idno type="eISSN">1468-8123</idno><idno type="book-DOI">10.1111/(ISSN)1468-8123</idno><idno type="book-part-DOI">10.1111/gfl.2011.11.issue-1</idno><idno type="product">GFL</idno><idno type="publisherDivision">ST</idno><imprint><biblScope unit="vol">11</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="97">97</biblScope><biblScope unit="page" to="107">107</biblScope><biblScope unit="page-count">11</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2011-02"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract xml:lang="en" style="main"><head>Abstract</head><p>Methane soil flux measurements have been made in 38 sites at the geothermal system of Sousaki (Greece) with the closed chamber method. Fluxes range from −47.6 to 29 150 mg m<hi rend="superscript">−2</hi> day<hi rend="superscript">−1</hi>, and the diffuse CH<hi rend="subscript">4</hi> output of the system has been estimated at 19 t a<hi rend="superscript">−1</hi>. Contemporaneous CO<hi rend="subscript">2</hi> flux measurements showed a moderate positive correlation between CO<hi rend="subscript">2</hi> and CH<hi rend="subscript">4</hi> fluxes. Comparison of the CO<hi rend="subscript">2</hi>/CH<hi rend="subscript">4</hi> soil flux ratios with the CO<hi rend="subscript">2</hi>/CH<hi rend="subscript">4</hi> ratio of the gases of the main gas manifestations provided evidence for methanotrophic activity within the soil. Laboratory CH<hi rend="subscript">4</hi> consumption experiments confirmed the presence of methanotrophic microorganisms in soil samples collected at Sousaki. Consumption was generally in the range from −4.9 to −38.9 pmolCH<hi rend="subscript">4</hi> h<hi rend="superscript">−1</hi> g<hi rend="superscript">−1</hi> but could sometimes reach extremely high values (−33 000 pmolCH<hi rend="subscript">4</hi> h<hi rend="superscript">−1</hi> g<hi rend="superscript">−1</hi>). These results are consistent with recent studies on other geothermal systems that revealed the existence of thermoacidophilic bacteria exerting methanotrophic activity in hot, acid soils, thereby reducing methane emissions to the atmosphere.</p></abstract><textClass><keywords xml:lang="en"><term xml:id="k1">accumulation chamber</term><term xml:id="k2">hydrothermal systems</term><term xml:id="k3">methane output</term><term xml:id="k4">methanotrophic activity</term><term xml:id="k5">soil degassing</term><term xml:id="k6">Sousaki</term></keywords><classCode scheme="tocHeading1">Original Articles</classCode></textClass><langUsage><language ident="EN"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/64EF07155222FFCB260EE99EB9823AF98D6D88EF/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1468-8123</doi><issn type="print">1468-8115</issn><issn type="electronic">1468-8123</issn><idGroup><id type="product" value="GFL"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="GEOFLUIDS">Geofluids</title></titleGroup></publicationMeta><publicationMeta level="part" position="02101"><doi origin="wiley">10.1111/gfl.2011.11.issue-1</doi><numberingGroup><numbering type="journalVolume" number="11">11</numbering><numbering type="journalIssue" number="1">1</numbering></numberingGroup><coverDate startDate="2011-02">February 2011</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="10" status="forIssue"><doi origin="wiley">10.1111/j.1468-8123.2010.00322.x</doi><idGroup><id type="unit" value="GFL322"></id></idGroup><countGroup><count type="pageTotal" number="11"></count></countGroup><titleGroup><title type="tocHeading1">Original Articles</title></titleGroup><copyright>© 2011 Blackwell Publishing Ltd</copyright><eventGroup><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.4.4 mode:FullText" date="2011-02-01"></event><event type="publishedOnlineEarlyUnpaginated" date="2011-01-11"></event><event type="firstOnline" date="2011-01-11"></event><event type="publishedOnlineFinalForm" date="2011-02-01"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:4.0.1" date="2014-03-12"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-16"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="97">97</numbering><numbering type="pageLast" number="107">107</numbering></numberingGroup><correspondenceTo>W. D’Alessandro, Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Via U. La Malfa 153, 90146 Palermo, Italy. Email <email>w.dalessandro@pa.ingv.it</email>. Tel: +39 091 6809409. Fax: +39 091 6809449.</correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:GFL.GFL322.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Received 4 August 2010; accepted 3 December 2010</unparsedEditorialHistory><countGroup><count type="figureTotal" number="6"></count><count type="tableTotal" number="3"></count></countGroup><titleGroup><title type="main">Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)</title><title type="shortAuthors">W. D’ALESSANDRO <i>et al.</i></title><title type="short">Diffuse hydrothermal methane output at Sousaki (Greece)</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>W.</givenNames><familyName>D’ALESSANDRO</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>L.</givenNames><familyName>BRUSCA</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a2"><personName><givenNames>K.</givenNames><familyName>KYRIAKOPOULOS</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a1"><personName><givenNames>M.</givenNames><familyName>MARTELLI</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a2"><personName><givenNames>G.</givenNames><familyName>MICHAS</familyName></personName></creator><creator creatorRole="author" xml:id="cr6" affiliationRef="#a2"><personName><givenNames>G.</givenNames><familyName>PAPADAKIS</familyName></personName></creator><creator creatorRole="author" xml:id="cr7" affiliationRef="#a1"><personName><givenNames>F.</givenNames><familyName>SALERNO</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1" countryCode="IT"><unparsedAffiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</unparsedAffiliation></affiliation><affiliation xml:id="a2" countryCode="GR"><unparsedAffiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</unparsedAffiliation></affiliation></affiliationGroup><keywordGroup xml:lang="en"><keyword xml:id="k1">accumulation chamber</keyword><keyword xml:id="k2">hydrothermal systems</keyword><keyword xml:id="k3">methane output</keyword><keyword xml:id="k4">methanotrophic activity</keyword><keyword xml:id="k5">soil degassing</keyword><keyword xml:id="k6">Sousaki</keyword></keywordGroup><abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title><p>Methane soil flux measurements have been made in 38 sites at the geothermal system of Sousaki (Greece) with the closed chamber method. Fluxes range from −47.6 to 29 150 mg m<sup>−2</sup> day<sup>−1</sup>, and the diffuse CH<sub>4</sub> output of the system has been estimated at 19 t a<sup>−1</sup>. Contemporaneous CO<sub>2</sub> flux measurements showed a moderate positive correlation between CO<sub>2</sub> and CH<sub>4</sub> fluxes. Comparison of the CO<sub>2</sub>/CH<sub>4</sub> soil flux ratios with the CO<sub>2</sub>/CH<sub>4</sub> ratio of the gases of the main gas manifestations provided evidence for methanotrophic activity within the soil. Laboratory CH<sub>4</sub> consumption experiments confirmed the presence of methanotrophic microorganisms in soil samples collected at Sousaki. Consumption was generally in the range from −4.9 to −38.9 pmolCH<sub>4</sub> h<sup>−1</sup> g<sup>−1</sup> but could sometimes reach extremely high values (−33 000 pmolCH<sub>4</sub> h<sup>−1</sup> g<sup>−1</sup>). These results are consistent with recent studies on other geothermal systems that revealed the existence of thermoacidophilic bacteria exerting methanotrophic activity in hot, acid soils, thereby reducing methane emissions to the atmosphere.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Diffuse hydrothermal methane output at Sousaki (Greece)</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Diffuse hydrothermal methane output and evidence of methanotrophic activity within the soils at Sousaki (Greece)</title></titleInfo><name type="personal"><namePart type="given">W.</namePart><namePart type="family">D’ALESSANDRO</namePart><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">L.</namePart><namePart type="family">BRUSCA</namePart><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K.</namePart><namePart type="family">KYRIAKOPOULOS</namePart><affiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">MARTELLI</namePart><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">MICHAS</namePart><affiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">PAPADAKIS</namePart><affiliation>Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, Panepistimioupolis, Ano Ilissia, Greece</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">F.</namePart><namePart type="family">SALERNO</namePart><affiliation>Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Palermo, Palermo, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article"></genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2011-02</dateIssued><edition>Received 4 August 2010; accepted 3 December 2010</edition><copyrightDate encoding="w3cdtf">2011</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType><extent unit="figures">6</extent><extent unit="tables">3</extent></physicalDescription><abstract lang="en">Methane soil flux measurements have been made in 38 sites at the geothermal system of Sousaki (Greece) with the closed chamber method. Fluxes range from −47.6 to 29 150 mg m−2 day−1, and the diffuse CH4 output of the system has been estimated at 19 t a−1. Contemporaneous CO2 flux measurements showed a moderate positive correlation between CO2 and CH4 fluxes. Comparison of the CO2/CH4 soil flux ratios with the CO2/CH4 ratio of the gases of the main gas manifestations provided evidence for methanotrophic activity within the soil. Laboratory CH4 consumption experiments confirmed the presence of methanotrophic microorganisms in soil samples collected at Sousaki. Consumption was generally in the range from −4.9 to −38.9 pmolCH4 h−1 g−1 but could sometimes reach extremely high values (−33 000 pmolCH4 h−1 g−1). These results are consistent with recent studies on other geothermal systems that revealed the existence of thermoacidophilic bacteria exerting methanotrophic activity in hot, acid soils, thereby reducing methane emissions to the atmosphere.</abstract><subject lang="en"><genre>keywords</genre><topic>accumulation chamber</topic><topic>hydrothermal systems</topic><topic>methane output</topic><topic>methanotrophic activity</topic><topic>soil degassing</topic><topic>Sousaki</topic></subject><relatedItem type="host"><titleInfo><title>Geofluids</title></titleInfo><genre type="journal">journal</genre><identifier type="ISSN">1468-8115</identifier><identifier type="eISSN">1468-8123</identifier><identifier type="DOI">10.1111/(ISSN)1468-8123</identifier><identifier type="PublisherID">GFL</identifier><part><date>2011</date><detail type="volume"><caption>vol.</caption><number>11</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>97</start><end>107</end><total>11</total></extent></part></relatedItem><identifier type="istex">64EF07155222FFCB260EE99EB9823AF98D6D88EF</identifier><identifier type="DOI">10.1111/j.1468-8123.2010.00322.x</identifier><identifier type="ArticleID">GFL322</identifier><accessCondition type="use and reproduction" contentType="copyright">© 2011 Blackwell Publishing Ltd</accessCondition><recordInfo><recordContentSource>WILEY</recordContentSource><recordOrigin>Blackwell Publishing Ltd</recordOrigin></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/64EF07155222FFCB260EE99EB9823AF98D6D88EF/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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