Multiple processes contribute to methane emission in a riparian cottonwood forest ecosystem.
Identifieur interne : 000255 ( Main/Exploration ); précédent : 000254; suivant : 000256Multiple processes contribute to methane emission in a riparian cottonwood forest ecosystem.
Auteurs : Lawrence B. Flanagan [Canada] ; Dylan J. Nikkel [Canada] ; Lauren M. Scherloski [Canada] ; Rachel E. Tkach [Canada] ; Kristian M. Smits [Canada] ; L Brent Selinger [Canada] ; Stewart B. Rood [Canada]Source :
- The New phytologist [ 1469-8137 ] ; 2020.
Abstract
Methane emission from trees may partially or completely offset the methane sink in upland soils, the only process that has been regularly included in methane budgets for forest ecosystems. Our objective was to analyze multiple biogeochemical processes that influence the production, oxidation and transport of methane in a riparian cottonwood ecosystem and its adjacent river. We combined chamber flux measurements on tree stems, forest soil and the river surface with eddy covariance measurements of methane net ecosystem exchange. In addition, we tested whether methanogens were present in cottonwood stems, shallow soil layers and alluvial groundwater. Average midday peak in net methane emission measured by eddy covariance was c. 12 nmol m-2 s-1 . The average uptake of methane by soils (0.87 nmol m-2 s-1 ) was largely offset by tree stem methane emission (0.75 nmol m-2 s-1 ). There was evidence of methanogens in tree stems but not in shallow soil. Growing season (May-September) cumulative net methane emission (17.4 mmol CH4 m-2 ) included methane produced in cottonwood stems and methane input to the nocturnal boundary layer from the forest and the adjacent river. The multiple processes contributing to methane emission illustrated the linked nature of these adjacent terrestrial and aquatic ecosystems.
DOI: 10.1111/nph.16977
PubMed: 33006137
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Rood</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2020">2020</date><idno type="RBID">pubmed:33006137</idno><idno type="pmid">33006137</idno><idno type="doi">10.1111/nph.16977</idno><idno type="wicri:Area/Main/Corpus">000084</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000084</idno><idno type="wicri:Area/Main/Curation">000084</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">000084</idno><idno type="wicri:Area/Main/Exploration">000084</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Multiple processes contribute to methane emission in a riparian cottonwood forest ecosystem.</title><author><name sortKey="Flanagan, Lawrence B" sort="Flanagan, Lawrence B" uniqKey="Flanagan L" first="Lawrence B" last="Flanagan">Lawrence B. Flanagan</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author><author><name sortKey="Nikkel, Dylan J" sort="Nikkel, Dylan J" uniqKey="Nikkel D" first="Dylan J" last="Nikkel">Dylan J. Nikkel</name><affiliation wicri:level="1"><nlm:affiliation>Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author><author><name sortKey="Scherloski, Lauren M" sort="Scherloski, Lauren M" uniqKey="Scherloski L" first="Lauren M" last="Scherloski">Lauren M. Scherloski</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author><author><name sortKey="Tkach, Rachel E" sort="Tkach, Rachel E" uniqKey="Tkach R" first="Rachel E" last="Tkach">Rachel E. Tkach</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author><author><name sortKey="Smits, Kristian M" sort="Smits, Kristian M" uniqKey="Smits K" first="Kristian M" last="Smits">Kristian M. Smits</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author><author><name sortKey="Selinger, L Brent" sort="Selinger, L Brent" uniqKey="Selinger L" first="L Brent" last="Selinger">L Brent Selinger</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author><author><name sortKey="Rood, Stewart B" sort="Rood, Stewart B" uniqKey="Rood S" first="Stewart B" last="Rood">Stewart B. Rood</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4</wicri:regionArea><wicri:noRegion>T1K 3M4</wicri:noRegion></affiliation></author></analytic><series><title level="j">The New phytologist</title><idno type="eISSN">1469-8137</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Methane emission from trees may partially or completely offset the methane sink in upland soils, the only process that has been regularly included in methane budgets for forest ecosystems. Our objective was to analyze multiple biogeochemical processes that influence the production, oxidation and transport of methane in a riparian cottonwood ecosystem and its adjacent river. We combined chamber flux measurements on tree stems, forest soil and the river surface with eddy covariance measurements of methane net ecosystem exchange. In addition, we tested whether methanogens were present in cottonwood stems, shallow soil layers and alluvial groundwater. Average midday peak in net methane emission measured by eddy covariance was c. 12 nmol m<sup>-2</sup> s<sup>-1</sup> . The average uptake of methane by soils (0.87 nmol m<sup>-2</sup> s<sup>-1</sup> ) was largely offset by tree stem methane emission (0.75 nmol m<sup>-2</sup> s<sup>-1</sup> ). There was evidence of methanogens in tree stems but not in shallow soil. Growing season (May-September) cumulative net methane emission (17.4 mmol CH<sub>4</sub> m<sup>-2</sup> ) included methane produced in cottonwood stems and methane input to the nocturnal boundary layer from the forest and the adjacent river. The multiple processes contributing to methane emission illustrated the linked nature of these adjacent terrestrial and aquatic ecosystems.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">33006137</PMID><DateRevised><Year>2020</Year><Month>10</Month><Day>31</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1469-8137</ISSN><JournalIssue CitedMedium="Internet"><PubDate><Year>2020</Year><Month>Oct</Month><Day>01</Day></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Multiple processes contribute to methane emission in a riparian cottonwood forest ecosystem.</ArticleTitle><ELocationID EIdType="doi" ValidYN="Y">10.1111/nph.16977</ELocationID><Abstract><AbstractText>Methane emission from trees may partially or completely offset the methane sink in upland soils, the only process that has been regularly included in methane budgets for forest ecosystems. Our objective was to analyze multiple biogeochemical processes that influence the production, oxidation and transport of methane in a riparian cottonwood ecosystem and its adjacent river. We combined chamber flux measurements on tree stems, forest soil and the river surface with eddy covariance measurements of methane net ecosystem exchange. In addition, we tested whether methanogens were present in cottonwood stems, shallow soil layers and alluvial groundwater. Average midday peak in net methane emission measured by eddy covariance was c. 12 nmol m<sup>-2</sup> s<sup>-1</sup> . The average uptake of methane by soils (0.87 nmol m<sup>-2</sup> s<sup>-1</sup> ) was largely offset by tree stem methane emission (0.75 nmol m<sup>-2</sup> s<sup>-1</sup> ). There was evidence of methanogens in tree stems but not in shallow soil. Growing season (May-September) cumulative net methane emission (17.4 mmol CH<sub>4</sub> m<sup>-2</sup> ) included methane produced in cottonwood stems and methane input to the nocturnal boundary layer from the forest and the adjacent river. The multiple processes contributing to methane emission illustrated the linked nature of these adjacent terrestrial and aquatic ecosystems.</AbstractText><CopyrightInformation>© 2020 The Authors New Phytologist © 2020 New Phytologist Foundation.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Flanagan</LastName><ForeName>Lawrence B</ForeName><Initials>LB</Initials><Identifier Source="ORCID">https://orcid.org/0000-0003-1748-0306</Identifier><AffiliationInfo><Affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Nikkel</LastName><ForeName>Dylan J</ForeName><Initials>DJ</Initials><AffiliationInfo><Affiliation>Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Scherloski</LastName><ForeName>Lauren M</ForeName><Initials>LM</Initials><AffiliationInfo><Affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tkach</LastName><ForeName>Rachel E</ForeName><Initials>RE</Initials><AffiliationInfo><Affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Smits</LastName><ForeName>Kristian M</ForeName><Initials>KM</Initials><AffiliationInfo><Affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Selinger</LastName><ForeName>L Brent</ForeName><Initials>LB</Initials><AffiliationInfo><Affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rood</LastName><ForeName>Stewart B</ForeName><Initials>SB</Initials><Identifier Source="ORCID">https://orcid.org/0000-0003-1340-1172</Identifier><AffiliationInfo><Affiliation>Department of Biological Sciences, University of Lethbridge, 4401 University Drive, Lethbridge, AB, T1K 3M4, Canada.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><GrantList CompleteYN="Y"><Grant><Agency>ConocoPhillips</Agency><Country></Country></Grant><Grant><Agency>Natural Sciences and Engineering Research Council of Canada</Agency><Country></Country></Grant><Grant><Agency>Canada Foundation for Innovation</Agency><Country></Country></Grant><Grant><Agency>Ministry of Advanced Education, Government of Alberta</Agency><Country></Country></Grant><Grant><Agency>Alberta Innovates - Energy and Environment Solutions</Agency><Country></Country></Grant></GrantList><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>10</Month><Day>01</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>New Phytol</MedlineTA><NlmUniqueID>9882884</NlmUniqueID><ISSNLinking>0028-646X</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Populus deltoides
</Keyword><Keyword MajorTopicYN="N">Populus angustifolia (cottonwoods)</Keyword><Keyword MajorTopicYN="N">eddy covariance</Keyword><Keyword MajorTopicYN="N">methane (CH4)</Keyword><Keyword MajorTopicYN="N">methane oxidation</Keyword><Keyword MajorTopicYN="N">methanogenesis</Keyword><Keyword MajorTopicYN="N">tree methane emission</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>06</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>09</Month><Day>17</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>10</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>10</Month><Day>3</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>10</Month><Day>2</Day><Hour>5</Hour><Minute>48</Minute></PubMedPubDate></History><PublicationStatus>aheadofprint</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">33006137</ArticleId><ArticleId IdType="doi">10.1111/nph.16977</ArticleId></ArticleIdList><ReferenceList><Title>References</Title><Reference><Citation>Baldocchi DD. 2014. 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Scherloski</name><name sortKey="Selinger, L Brent" sort="Selinger, L Brent" uniqKey="Selinger L" first="L Brent" last="Selinger">L Brent Selinger</name><name sortKey="Smits, Kristian M" sort="Smits, Kristian M" uniqKey="Smits K" first="Kristian M" last="Smits">Kristian M. Smits</name><name sortKey="Tkach, Rachel E" sort="Tkach, Rachel E" uniqKey="Tkach R" first="Rachel E" last="Tkach">Rachel E. Tkach</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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