Short-term carbon cycling responses of a mature eucalypt woodland to gradual stepwise enrichment of atmospheric CO2 concentration.
Identifieur interne : 001741 ( Main/Exploration ); précédent : 001740; suivant : 001742Short-term carbon cycling responses of a mature eucalypt woodland to gradual stepwise enrichment of atmospheric CO2 concentration.
Auteurs : John E. Drake [Australie] ; Catriona A. Macdonald [Australie] ; Mark G. Tjoelker [Australie] ; Kristine Y. Crous [Australie] ; Teresa E. Gimeno [Australie] ; Brajesh K. Singh [Australie] ; Peter B. Reich [Australie] ; Ian C. Anderson [Australie] ; David S. Ellsworth [Australie]Source :
- Global change biology [ 1365-2486 ] ; 2016.
Descripteurs français
- KwdFr :
- MESH :
- métabolisme : Carbone, Dioxyde de carbone, Eucalyptus, Feuilles de plante.
- Atmosphère, Australie, Biomasse, Changement climatique, Cycle du carbone, Forêts, Photosynthèse, Sol, Écosystème.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Soil.
- chemical , metabolism : Carbon, Carbon Dioxide.
- chemistry : Atmosphere.
- metabolism : Eucalyptus, Plant Leaves.
- Australia, Biomass, Carbon Cycle, Climate Change, Ecosystem, Forests, Photosynthesis.
Abstract
Projections of future climate are highly sensitive to uncertainties regarding carbon (C) uptake and storage by terrestrial ecosystems. The Eucalyptus Free-Air CO2 Enrichment (EucFACE) experiment was established to study the effects of elevated atmospheric CO2 concentrations (eCO2 ) on a native mature eucalypt woodland with low fertility soils in southeast Australia. In contrast to other FACE experiments, the concentration of CO2 at EucFACE was increased gradually in steps above ambient (+0, 30, 60, 90, 120, and 150 ppm CO2 above ambient of ~400 ppm), with each step lasting approximately 5 weeks. This provided a unique opportunity to study the short-term (weeks to months) response of C cycle flux components to eCO2 across a range of CO2 concentrations in an intact ecosystem. Soil CO2 efflux (i.e., soil respiration or Rsoil ) increased in response to initial enrichment (e.g., +30 and +60 ppm CO2 ) but did not continue to increase as the CO2 enrichment was stepped up to higher concentrations. Light-saturated photosynthesis of canopy leaves (Asat ) also showed similar stimulation by elevated CO2 at +60 ppm as at +150 ppm CO2 . The lack of significant effects of eCO2 on soil moisture, microbial biomass, or activity suggests that the increase in Rsoil likely reflected increased root and rhizosphere respiration rather than increased microbial decomposition of soil organic matter. This rapid increase in Rsoil suggests that under eCO2, additional photosynthate was produced, transported belowground, and respired. The consequences of this increased belowground activity and whether it is sustained through time in mature ecosystems under eCO2 are a priority for future research.
DOI: 10.1111/gcb.13109
PubMed: 26426394
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PubMed, to step Corpus: 002549
- to stream PubMed, to step Curation: 002481
- to stream PubMed, to step Checkpoint: 002481
- to stream Ncbi, to step Merge: 002B54
- to stream Ncbi, to step Curation: 002B54
- to stream Ncbi, to step Checkpoint: 002B54
- to stream Main, to step Merge: 001736
- to stream Main, to step Curation: 001741
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Short-term carbon cycling responses of a mature eucalypt woodland to gradual stepwise enrichment of atmospheric CO2 concentration.</title><author><name sortKey="Drake, John E" sort="Drake, John E" uniqKey="Drake J" first="John E" last="Drake">John E. Drake</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Macdonald, Catriona A" sort="Macdonald, Catriona A" uniqKey="Macdonald C" first="Catriona A" last="Macdonald">Catriona A. Macdonald</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Tjoelker, Mark G" sort="Tjoelker, Mark G" uniqKey="Tjoelker M" first="Mark G" last="Tjoelker">Mark G. Tjoelker</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Crous, Kristine Y" sort="Crous, Kristine Y" uniqKey="Crous K" first="Kristine Y" last="Crous">Kristine Y. Crous</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Gimeno, Teresa E" sort="Gimeno, Teresa E" uniqKey="Gimeno T" first="Teresa E" last="Gimeno">Teresa E. Gimeno</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Singh, Brajesh K" sort="Singh, Brajesh K" uniqKey="Singh B" first="Brajesh K" last="Singh">Brajesh K. Singh</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Reich, Peter B" sort="Reich, Peter B" uniqKey="Reich P" first="Peter B" last="Reich">Peter B. Reich</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Anderson, Ian C" sort="Anderson, Ian C" uniqKey="Anderson I" first="Ian C" last="Anderson">Ian C. Anderson</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Ellsworth, David S" sort="Ellsworth, David S" uniqKey="Ellsworth D" first="David S" last="Ellsworth">David S. Ellsworth</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2016">2016</date><idno type="RBID">pubmed:26426394</idno><idno type="pmid">26426394</idno><idno type="doi">10.1111/gcb.13109</idno><idno type="wicri:Area/PubMed/Corpus">002549</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002549</idno><idno type="wicri:Area/PubMed/Curation">002481</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">002481</idno><idno type="wicri:Area/PubMed/Checkpoint">002481</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">002481</idno><idno type="wicri:Area/Ncbi/Merge">002B54</idno><idno type="wicri:Area/Ncbi/Curation">002B54</idno><idno type="wicri:Area/Ncbi/Checkpoint">002B54</idno><idno type="wicri:Area/Main/Merge">001736</idno><idno type="wicri:Area/Main/Curation">001741</idno><idno type="wicri:Area/Main/Exploration">001741</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Short-term carbon cycling responses of a mature eucalypt woodland to gradual stepwise enrichment of atmospheric CO2 concentration.</title><author><name sortKey="Drake, John E" sort="Drake, John E" uniqKey="Drake J" first="John E" last="Drake">John E. Drake</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Macdonald, Catriona A" sort="Macdonald, Catriona A" uniqKey="Macdonald C" first="Catriona A" last="Macdonald">Catriona A. Macdonald</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Tjoelker, Mark G" sort="Tjoelker, Mark G" uniqKey="Tjoelker M" first="Mark G" last="Tjoelker">Mark G. Tjoelker</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Crous, Kristine Y" sort="Crous, Kristine Y" uniqKey="Crous K" first="Kristine Y" last="Crous">Kristine Y. Crous</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Gimeno, Teresa E" sort="Gimeno, Teresa E" uniqKey="Gimeno T" first="Teresa E" last="Gimeno">Teresa E. Gimeno</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Singh, Brajesh K" sort="Singh, Brajesh K" uniqKey="Singh B" first="Brajesh K" last="Singh">Brajesh K. Singh</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Reich, Peter B" sort="Reich, Peter B" uniqKey="Reich P" first="Peter B" last="Reich">Peter B. Reich</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Anderson, Ian C" sort="Anderson, Ian C" uniqKey="Anderson I" first="Ian C" last="Anderson">Ian C. Anderson</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author><author><name sortKey="Ellsworth, David S" sort="Ellsworth, David S" uniqKey="Ellsworth D" first="David S" last="Ellsworth">David S. Ellsworth</name><affiliation wicri:level="1"><nlm:affiliation>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751</wicri:regionArea><wicri:noRegion>2751</wicri:noRegion></affiliation></author></analytic><series><title level="j">Global change biology</title><idno type="eISSN">1365-2486</idno><imprint><date when="2016" type="published">2016</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Atmosphere (chemistry)</term><term>Australia</term><term>Biomass</term><term>Carbon (metabolism)</term><term>Carbon Cycle</term><term>Carbon Dioxide (metabolism)</term><term>Climate Change</term><term>Ecosystem</term><term>Eucalyptus (metabolism)</term><term>Forests</term><term>Photosynthesis</term><term>Plant Leaves (metabolism)</term><term>Soil (chemistry)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Atmosphère ()</term><term>Australie</term><term>Biomasse</term><term>Carbone (métabolisme)</term><term>Changement climatique</term><term>Cycle du carbone</term><term>Dioxyde de carbone (métabolisme)</term><term>Eucalyptus (métabolisme)</term><term>Feuilles de plante (métabolisme)</term><term>Forêts</term><term>Photosynthèse</term><term>Sol ()</term><term>Écosystème</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Soil</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term><term>Carbon Dioxide</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Atmosphere</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Eucalyptus</term><term>Plant Leaves</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Carbone</term><term>Dioxyde de carbone</term><term>Eucalyptus</term><term>Feuilles de plante</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Australia</term><term>Biomass</term><term>Carbon Cycle</term><term>Climate Change</term><term>Ecosystem</term><term>Forests</term><term>Photosynthesis</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Atmosphère</term><term>Australie</term><term>Biomasse</term><term>Changement climatique</term><term>Cycle du carbone</term><term>Forêts</term><term>Photosynthèse</term><term>Sol</term><term>Écosystème</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Projections of future climate are highly sensitive to uncertainties regarding carbon (C) uptake and storage by terrestrial ecosystems. The Eucalyptus Free-Air CO2 Enrichment (EucFACE) experiment was established to study the effects of elevated atmospheric CO2 concentrations (eCO2 ) on a native mature eucalypt woodland with low fertility soils in southeast Australia. In contrast to other FACE experiments, the concentration of CO2 at EucFACE was increased gradually in steps above ambient (+0, 30, 60, 90, 120, and 150 ppm CO2 above ambient of ~400 ppm), with each step lasting approximately 5 weeks. This provided a unique opportunity to study the short-term (weeks to months) response of C cycle flux components to eCO2 across a range of CO2 concentrations in an intact ecosystem. Soil CO2 efflux (i.e., soil respiration or Rsoil ) increased in response to initial enrichment (e.g., +30 and +60 ppm CO2 ) but did not continue to increase as the CO2 enrichment was stepped up to higher concentrations. Light-saturated photosynthesis of canopy leaves (Asat ) also showed similar stimulation by elevated CO2 at +60 ppm as at +150 ppm CO2 . The lack of significant effects of eCO2 on soil moisture, microbial biomass, or activity suggests that the increase in Rsoil likely reflected increased root and rhizosphere respiration rather than increased microbial decomposition of soil organic matter. This rapid increase in Rsoil suggests that under eCO2, additional photosynthate was produced, transported belowground, and respired. The consequences of this increased belowground activity and whether it is sustained through time in mature ecosystems under eCO2 are a priority for future research.</div></front></TEI><affiliations><list><country><li>Australie</li></country></list><tree><country name="Australie"><noRegion><name sortKey="Drake, John E" sort="Drake, John E" uniqKey="Drake J" first="John E" last="Drake">John E. Drake</name></noRegion><name sortKey="Anderson, Ian C" sort="Anderson, Ian C" uniqKey="Anderson I" first="Ian C" last="Anderson">Ian C. Anderson</name><name sortKey="Crous, Kristine Y" sort="Crous, Kristine Y" uniqKey="Crous K" first="Kristine Y" last="Crous">Kristine Y. Crous</name><name sortKey="Ellsworth, David S" sort="Ellsworth, David S" uniqKey="Ellsworth D" first="David S" last="Ellsworth">David S. Ellsworth</name><name sortKey="Gimeno, Teresa E" sort="Gimeno, Teresa E" uniqKey="Gimeno T" first="Teresa E" last="Gimeno">Teresa E. Gimeno</name><name sortKey="Macdonald, Catriona A" sort="Macdonald, Catriona A" uniqKey="Macdonald C" first="Catriona A" last="Macdonald">Catriona A. Macdonald</name><name sortKey="Reich, Peter B" sort="Reich, Peter B" uniqKey="Reich P" first="Peter B" last="Reich">Peter B. Reich</name><name sortKey="Singh, Brajesh K" sort="Singh, Brajesh K" uniqKey="Singh B" first="Brajesh K" last="Singh">Brajesh K. Singh</name><name sortKey="Tjoelker, Mark G" sort="Tjoelker, Mark G" uniqKey="Tjoelker M" first="Mark G" last="Tjoelker">Mark G. Tjoelker</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 001741 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 001741 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Asie
|area= AustralieFrV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= pubmed:26426394
|texte= Short-term carbon cycling responses of a mature eucalypt woodland to gradual stepwise enrichment of atmospheric CO2 concentration.
}}
Pour générer des pages wiki
HfdIndexSelect -h $EXPLOR_AREA/Data/Main/Exploration/RBID.i -Sk "pubmed:26426394" \
| HfdSelect -Kh $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd \
| NlmPubMed2Wicri -a AustralieFrV1
| This area was generated with Dilib version V0.6.33. |  |