Tree-girdling to separate root and heterotrophic respiration in two Eucalyptus stands in Brazil.
Identifieur interne : 003340 ( Main/Corpus ); précédent : 003339; suivant : 003341Tree-girdling to separate root and heterotrophic respiration in two Eucalyptus stands in Brazil.
Auteurs : Dan Binkley ; Jose Luiz Stape ; Ernersto Norio Takahashi ; Michael G. RyanSource :
- Oecologia [ 0029-8549 ] ; 2006.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon Dioxide.
- geographic : Brazil.
- metabolism : Eucalyptus, Plant Roots.
- physiology : Photosynthesis.
- Ecosystem, Soil Microbiology, Tropical Climate.
Abstract
The release of carbon as CO2 from belowground processes accounts for about 70% of total ecosystem respiration. Insights about factors controlling soil CO2 efflux are constrained by the challenge of apportioning sources of CO2 between autotrophic tree roots (and mycorrhizal fungi) and heterotrophic microorganisms. In some temperate conifer forests, the reduction in soil CO2 efflux after girdling (phloem removal) has been used to separate these sources. Girdling stops the flow of carbohydrates to the belowground portion of the ecosystem, which should slow respiration by roots and mycorrhizae while heterotrophic respiration should remain constant or be enhanced by the decomposition of newly dead roots. Therefore, the reduction in CO2 efflux after girdling should be a conservative estimate of the belowground flux of C from trees. We tested this approach in two tropical Eucalyptus plantations. Tree canopies remained intact for more than 3 months after girdling, showing no reduction in light interception. The reduction in soil CO2 efflux averaged 16-24% for the 3-month period after girdling. The reduction in CO2 efflux was similar for plots with one half of the trees girdled and those with all of the trees girdled. Girdling did not reduce live fine root biomass for at least 5 months after treatment, indicating that large reserves of carbohydrates in the root systems of Eucalyptus trees maintained the roots and root respiration. Our results suggest that the girdling approach is unlikely to provide useful insights into the contribution of tree roots and heterotrophs to soil CO2 efflux in this type of forest ecosystem.
DOI: 10.1007/s00442-006-0383-6
PubMed: 16496179
Links to Exploration step
pubmed:16496179Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Tree-girdling to separate root and heterotrophic respiration in two Eucalyptus stands in Brazil.</title><author><name sortKey="Binkley, Dan" sort="Binkley, Dan" uniqKey="Binkley D" first="Dan" last="Binkley">Dan Binkley</name><affiliation><nlm:affiliation>Department of Forest, Rangeland, and Watershed Stewardship, Graduate Degree Program in Ecology, and Natural Resource Ecology Laboratory, Colorado State University, Ft. Collins, CO, 80523, USA. dan@cnr.colostate.edu</nlm:affiliation></affiliation></author><author><name sortKey="Stape, Jose Luiz" sort="Stape, Jose Luiz" uniqKey="Stape J" first="Jose Luiz" last="Stape">Jose Luiz Stape</name></author><author><name sortKey="Takahashi, Ernersto Norio" sort="Takahashi, Ernersto Norio" uniqKey="Takahashi E" first="Ernersto Norio" last="Takahashi">Ernersto Norio Takahashi</name></author><author><name sortKey="Ryan, Michael G" sort="Ryan, Michael G" uniqKey="Ryan M" first="Michael G" last="Ryan">Michael G. Ryan</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2006">2006</date><idno type="RBID">pubmed:16496179</idno><idno type="pmid">16496179</idno><idno type="doi">10.1007/s00442-006-0383-6</idno><idno type="wicri:Area/Main/Corpus">003340</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">003340</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Tree-girdling to separate root and heterotrophic respiration in two Eucalyptus stands in Brazil.</title><author><name sortKey="Binkley, Dan" sort="Binkley, Dan" uniqKey="Binkley D" first="Dan" last="Binkley">Dan Binkley</name><affiliation><nlm:affiliation>Department of Forest, Rangeland, and Watershed Stewardship, Graduate Degree Program in Ecology, and Natural Resource Ecology Laboratory, Colorado State University, Ft. Collins, CO, 80523, USA. dan@cnr.colostate.edu</nlm:affiliation></affiliation></author><author><name sortKey="Stape, Jose Luiz" sort="Stape, Jose Luiz" uniqKey="Stape J" first="Jose Luiz" last="Stape">Jose Luiz Stape</name></author><author><name sortKey="Takahashi, Ernersto Norio" sort="Takahashi, Ernersto Norio" uniqKey="Takahashi E" first="Ernersto Norio" last="Takahashi">Ernersto Norio Takahashi</name></author><author><name sortKey="Ryan, Michael G" sort="Ryan, Michael G" uniqKey="Ryan M" first="Michael G" last="Ryan">Michael G. Ryan</name></author></analytic><series><title level="j">Oecologia</title><idno type="ISSN">0029-8549</idno><imprint><date when="2006" type="published">2006</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Brazil (MeSH)</term><term>Carbon Dioxide (metabolism)</term><term>Ecosystem (MeSH)</term><term>Eucalyptus (metabolism)</term><term>Photosynthesis (physiology)</term><term>Plant Roots (metabolism)</term><term>Soil Microbiology (MeSH)</term><term>Tropical Climate (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon Dioxide</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>Brazil</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Eucalyptus</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Photosynthesis</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Ecosystem</term><term>Soil Microbiology</term><term>Tropical Climate</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The release of carbon as CO2 from belowground processes accounts for about 70% of total ecosystem respiration. Insights about factors controlling soil CO2 efflux are constrained by the challenge of apportioning sources of CO2 between autotrophic tree roots (and mycorrhizal fungi) and heterotrophic microorganisms. In some temperate conifer forests, the reduction in soil CO2 efflux after girdling (phloem removal) has been used to separate these sources. Girdling stops the flow of carbohydrates to the belowground portion of the ecosystem, which should slow respiration by roots and mycorrhizae while heterotrophic respiration should remain constant or be enhanced by the decomposition of newly dead roots. Therefore, the reduction in CO2 efflux after girdling should be a conservative estimate of the belowground flux of C from trees. We tested this approach in two tropical Eucalyptus plantations. Tree canopies remained intact for more than 3 months after girdling, showing no reduction in light interception. The reduction in soil CO2 efflux averaged 16-24% for the 3-month period after girdling. The reduction in CO2 efflux was similar for plots with one half of the trees girdled and those with all of the trees girdled. Girdling did not reduce live fine root biomass for at least 5 months after treatment, indicating that large reserves of carbohydrates in the root systems of Eucalyptus trees maintained the roots and root respiration. Our results suggest that the girdling approach is unlikely to provide useful insights into the contribution of tree roots and heterotrophs to soil CO2 efflux in this type of forest ecosystem.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">16496179</PMID><DateCompleted><Year>2006</Year><Month>09</Month><Day>05</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0029-8549</ISSN><JournalIssue CitedMedium="Print"><Volume>148</Volume><Issue>3</Issue><PubDate><Year>2006</Year><Month>Jun</Month></PubDate></JournalIssue><Title>Oecologia</Title><ISOAbbreviation>Oecologia</ISOAbbreviation></Journal><ArticleTitle>Tree-girdling to separate root and heterotrophic respiration in two Eucalyptus stands in Brazil.</ArticleTitle><Pagination><MedlinePgn>447-54</MedlinePgn></Pagination><Abstract><AbstractText>The release of carbon as CO2 from belowground processes accounts for about 70% of total ecosystem respiration. Insights about factors controlling soil CO2 efflux are constrained by the challenge of apportioning sources of CO2 between autotrophic tree roots (and mycorrhizal fungi) and heterotrophic microorganisms. In some temperate conifer forests, the reduction in soil CO2 efflux after girdling (phloem removal) has been used to separate these sources. Girdling stops the flow of carbohydrates to the belowground portion of the ecosystem, which should slow respiration by roots and mycorrhizae while heterotrophic respiration should remain constant or be enhanced by the decomposition of newly dead roots. Therefore, the reduction in CO2 efflux after girdling should be a conservative estimate of the belowground flux of C from trees. We tested this approach in two tropical Eucalyptus plantations. Tree canopies remained intact for more than 3 months after girdling, showing no reduction in light interception. The reduction in soil CO2 efflux averaged 16-24% for the 3-month period after girdling. The reduction in CO2 efflux was similar for plots with one half of the trees girdled and those with all of the trees girdled. Girdling did not reduce live fine root biomass for at least 5 months after treatment, indicating that large reserves of carbohydrates in the root systems of Eucalyptus trees maintained the roots and root respiration. Our results suggest that the girdling approach is unlikely to provide useful insights into the contribution of tree roots and heterotrophs to soil CO2 efflux in this type of forest ecosystem.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Binkley</LastName><ForeName>Dan</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Department of Forest, Rangeland, and Watershed Stewardship, Graduate Degree Program in Ecology, and Natural Resource Ecology Laboratory, Colorado State University, Ft. Collins, CO, 80523, USA. dan@cnr.colostate.edu</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Stape</LastName><ForeName>Jose Luiz</ForeName><Initials>JL</Initials></Author><Author ValidYN="Y"><LastName>Takahashi</LastName><ForeName>Ernersto Norio</ForeName><Initials>EN</Initials></Author><Author ValidYN="Y"><LastName>Ryan</LastName><ForeName>Michael G</ForeName><Initials>MG</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2006</Year><Month>02</Month><Day>23</Day></ArticleDate></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Oecologia</MedlineTA><NlmUniqueID>0150372</NlmUniqueID><ISSNLinking>0029-8549</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>142M471B3J</RegistryNumber><NameOfSubstance UI="D002245">Carbon Dioxide</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D001938" MajorTopicYN="N" Type="Geographic">Brazil</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D002245" MajorTopicYN="N">Carbon Dioxide</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D017753" MajorTopicYN="N">Ecosystem</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005052" MajorTopicYN="N">Eucalyptus</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010788" MajorTopicYN="N">Photosynthesis</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012988" MajorTopicYN="Y">Soil Microbiology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014329" MajorTopicYN="N">Tropical Climate</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="accepted"><Year>2005</Year><Month>11</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2005</Year><Month>07</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2006</Year><Month>2</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2006</Year><Month>9</Month><Day>6</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2006</Year><Month>2</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">16496179</ArticleId><ArticleId IdType="doi">10.1007/s00442-006-0383-6</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Nature. 2001 Jun 14;411(6839):789-92</Citation><ArticleIdList><ArticleId IdType="pubmed">11459055</ArticleId></ArticleIdList></Reference><Reference><Citation>Tree Physiol. 2000 Jan;20(1):23-32</Citation><ArticleIdList><ArticleId IdType="pubmed">12651523</ArticleId></ArticleIdList></Reference><Reference><Citation>Oecologia. 2004 May;139(4):551-9</Citation><ArticleIdList><ArticleId IdType="pubmed">15042460</ArticleId></ArticleIdList></Reference><Reference><Citation>Oecologia. 1979 Jan;40(3):247-257</Citation><ArticleIdList><ArticleId IdType="pubmed">28309609</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Bois/explor/MycorrhizaeV1/Data/Main/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 003340 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Corpus/biblio.hfd -nk 003340 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Bois
|area= MycorrhizaeV1
|flux= Main
|étape= Corpus
|type= RBID
|clé= pubmed:16496179
|texte= Tree-girdling to separate root and heterotrophic respiration in two Eucalyptus stands in Brazil.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Corpus/RBID.i -Sk "pubmed:16496179" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Corpus/biblio.hfd \
| NlmPubMed2Wicri -a MycorrhizaeV1
| This area was generated with Dilib version V0.6.37. |  |