Plant hydraulics improves and topography mediates prediction of aspen mortality in southwestern USA.
Identifieur interne : 001257 ( Main/Exploration ); précédent : 001256; suivant : 001258Plant hydraulics improves and topography mediates prediction of aspen mortality in southwestern USA.
Auteurs : Xiaonan Tai [États-Unis] ; D Scott Mackay [États-Unis] ; William R L. Anderegg [États-Unis] ; John S. Sperry [États-Unis] ; Paul D. Brooks [États-Unis]Source :
- The New phytologist [ 1469-8137 ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
- physiologie : Eau, Populus.
- Déshydratation, Géographie, Pression de vapeur, Simulation numérique, Sol, Sécheresses, Écosystème, États du Sud-Ouest des États-Unis.
English descriptors
- KwdEn :
- MESH :
- chemical , physiology : Water.
- chemical : Soil.
- physiology : Populus.
- Computer Simulation, Dehydration, Droughts, Ecosystem, Geography, Southwestern United States, Vapor Pressure.
Abstract
Elevated forest mortality has been attributed to climate change-induced droughts, but prediction of spatial mortality patterns remains challenging. We evaluated whether introducing plant hydraulics and topographic convergence-induced soil moisture variation to land surface models (LSM) can help explain spatial patterns of mortality. A scheme predicting plant hydraulic safety loss from soil moisture was developed using field measurements and a plant physiology-hydraulics model, TREES. The scheme was upscaled to Populus tremuloides forests across Colorado, USA, using LSM-modeled and topography-mediated soil moisture, respectively. The spatial patterns of hydraulic safety loss were compared against aerial surveyed mortality. Incorporating hydraulic safety loss raised the explanatory power of mortality by 40% compared to LSM-modeled soil moisture. Topographic convergence was mostly influential in suppressing mortality in low and concave areas, explaining an additional 10% of the variations in mortality for those regions. Plant hydraulics integrated water stress along the soil-plant continuum and was more closely tied to plant physiological response to drought. In addition to the well-recognized topo-climate influence due to elevation and aspect, we found evidence that topographic convergence mediates tree mortality in certain parts of the landscape that are low and convergent, likely through influences on plant-available water.
DOI: 10.1111/nph.14098
PubMed: 27432086
Affiliations:
- États-Unis
- New Jersey, Utah, État de New York
- Buffalo (New York), Princeton (New Jersey)
- Université d'État de New York à Buffalo, Université de Princeton
Links toward previous steps (curation, corpus...)
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Anderegg</name><affiliation wicri:level="4"><nlm:affiliation>Department of Ecology and Evolutionary Biology, Princeton University, Guyot Hall, Princeton, NJ 08544, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Ecology and Evolutionary Biology, Princeton University, Guyot Hall, Princeton, NJ 08544</wicri:regionArea><placeName><region type="state">New Jersey</region><settlement type="city">Princeton (New Jersey)</settlement></placeName><orgName type="university">Université de Princeton</orgName></affiliation><affiliation wicri:level="2"><nlm:affiliation>Department of Biology, University of Utah, Salt Lake City, UT 84112, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Utah, Salt Lake City, UT 84112</wicri:regionArea><placeName><region type="state">Utah</region></placeName></affiliation></author><author><name sortKey="Sperry, John S" sort="Sperry, John S" uniqKey="Sperry J" first="John S" last="Sperry">John S. Sperry</name><affiliation wicri:level="2"><nlm:affiliation>Department of Biology, University of Utah, Salt Lake City, UT 84112, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, University of Utah, Salt Lake City, UT 84112</wicri:regionArea><placeName><region type="state">Utah</region></placeName></affiliation></author><author><name sortKey="Brooks, Paul D" sort="Brooks, Paul D" uniqKey="Brooks P" first="Paul D" last="Brooks">Paul D. Brooks</name><affiliation wicri:level="2"><nlm:affiliation>Department of Geology & Geophysics, University of Utah, Salt Lake City, UT 84112, USA.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Geology & Geophysics, University of Utah, Salt Lake City, UT 84112</wicri:regionArea><placeName><region type="state">Utah</region></placeName></affiliation></author></analytic><series><title level="j">The New phytologist</title><idno type="eISSN">1469-8137</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Computer Simulation (MeSH)</term><term>Dehydration (MeSH)</term><term>Droughts (MeSH)</term><term>Ecosystem (MeSH)</term><term>Geography (MeSH)</term><term>Populus (physiology)</term><term>Soil (MeSH)</term><term>Southwestern United States (MeSH)</term><term>Vapor Pressure (MeSH)</term><term>Water (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Déshydratation (MeSH)</term><term>Eau (physiologie)</term><term>Géographie (MeSH)</term><term>Populus (physiologie)</term><term>Pression de vapeur (MeSH)</term><term>Simulation numérique (MeSH)</term><term>Sol (MeSH)</term><term>Sécheresses (MeSH)</term><term>Écosystème (MeSH)</term><term>États du Sud-Ouest des États-Unis (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="physiology" xml:lang="en"><term>Water</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Soil</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Eau</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Computer Simulation</term><term>Dehydration</term><term>Droughts</term><term>Ecosystem</term><term>Geography</term><term>Southwestern United States</term><term>Vapor Pressure</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Déshydratation</term><term>Géographie</term><term>Pression de vapeur</term><term>Simulation numérique</term><term>Sol</term><term>Sécheresses</term><term>Écosystème</term><term>États du Sud-Ouest des États-Unis</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Elevated forest mortality has been attributed to climate change-induced droughts, but prediction of spatial mortality patterns remains challenging. We evaluated whether introducing plant hydraulics and topographic convergence-induced soil moisture variation to land surface models (LSM) can help explain spatial patterns of mortality. A scheme predicting plant hydraulic safety loss from soil moisture was developed using field measurements and a plant physiology-hydraulics model, TREES. The scheme was upscaled to Populus tremuloides forests across Colorado, USA, using LSM-modeled and topography-mediated soil moisture, respectively. The spatial patterns of hydraulic safety loss were compared against aerial surveyed mortality. Incorporating hydraulic safety loss raised the explanatory power of mortality by 40% compared to LSM-modeled soil moisture. Topographic convergence was mostly influential in suppressing mortality in low and concave areas, explaining an additional 10% of the variations in mortality for those regions. Plant hydraulics integrated water stress along the soil-plant continuum and was more closely tied to plant physiological response to drought. In addition to the well-recognized topo-climate influence due to elevation and aspect, we found evidence that topographic convergence mediates tree mortality in certain parts of the landscape that are low and convergent, likely through influences on plant-available water.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">27432086</PMID><DateCompleted><Year>2018</Year><Month>02</Month><Day>14</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1469-8137</ISSN><JournalIssue CitedMedium="Internet"><Volume>213</Volume><Issue>1</Issue><PubDate><Year>2017</Year><Month>01</Month></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Plant hydraulics improves and topography mediates prediction of aspen mortality in southwestern USA.</ArticleTitle><Pagination><MedlinePgn>113-127</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/nph.14098</ELocationID><Abstract><AbstractText>Elevated forest mortality has been attributed to climate change-induced droughts, but prediction of spatial mortality patterns remains challenging. We evaluated whether introducing plant hydraulics and topographic convergence-induced soil moisture variation to land surface models (LSM) can help explain spatial patterns of mortality. A scheme predicting plant hydraulic safety loss from soil moisture was developed using field measurements and a plant physiology-hydraulics model, TREES. The scheme was upscaled to Populus tremuloides forests across Colorado, USA, using LSM-modeled and topography-mediated soil moisture, respectively. The spatial patterns of hydraulic safety loss were compared against aerial surveyed mortality. Incorporating hydraulic safety loss raised the explanatory power of mortality by 40% compared to LSM-modeled soil moisture. Topographic convergence was mostly influential in suppressing mortality in low and concave areas, explaining an additional 10% of the variations in mortality for those regions. Plant hydraulics integrated water stress along the soil-plant continuum and was more closely tied to plant physiological response to drought. In addition to the well-recognized topo-climate influence due to elevation and aspect, we found evidence that topographic convergence mediates tree mortality in certain parts of the landscape that are low and convergent, likely through influences on plant-available water.</AbstractText><CopyrightInformation>© 2016 The Authors. New Phytologist © 2016 New Phytologist Trust.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Tai</LastName><ForeName>Xiaonan</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>Department of Geography, University at Buffalo, 105 Wilkeson Quadrangle, Buffalo, NY 14261, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mackay</LastName><ForeName>D Scott</ForeName><Initials>DS</Initials><AffiliationInfo><Affiliation>Department of Geography, University at Buffalo, 105 Wilkeson Quadrangle, Buffalo, NY 14261, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Anderegg</LastName><ForeName>William R L</ForeName><Initials>WR</Initials><AffiliationInfo><Affiliation>Department of Ecology and Evolutionary Biology, Princeton University, Guyot Hall, Princeton, NJ 08544, USA.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Department of Biology, University of Utah, Salt Lake City, UT 84112, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sperry</LastName><ForeName>John S</ForeName><Initials>JS</Initials><AffiliationInfo><Affiliation>Department of Biology, University of Utah, Salt Lake City, UT 84112, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Brooks</LastName><ForeName>Paul D</ForeName><Initials>PD</Initials><AffiliationInfo><Affiliation>Department of Geology & Geophysics, University of Utah, Salt Lake City, UT 84112, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2016</Year><Month>07</Month><Day>19</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>New Phytol</MedlineTA><NlmUniqueID>9882884</NlmUniqueID><ISSNLinking>0028-646X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012987">Soil</NameOfSubstance></Chemical><Chemical><RegistryNumber>059QF0KO0R</RegistryNumber><NameOfSubstance UI="D014867">Water</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D003198" MajorTopicYN="N">Computer Simulation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003681" MajorTopicYN="N">Dehydration</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055864" MajorTopicYN="N">Droughts</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D017753" MajorTopicYN="N">Ecosystem</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005843" MajorTopicYN="N">Geography</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012987" MajorTopicYN="N">Soil</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015206" MajorTopicYN="N">Southwestern United States</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055548" MajorTopicYN="N">Vapor Pressure</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014867" MajorTopicYN="N">Water</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">drought</Keyword><Keyword MajorTopicYN="Y">forest mortality</Keyword><Keyword MajorTopicYN="Y">plant hydraulics</Keyword><Keyword MajorTopicYN="Y">spatial pattern</Keyword><Keyword MajorTopicYN="Y">topographic convergence</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>03</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>06</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>7</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2018</Year><Month>2</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>7</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">27432086</ArticleId><ArticleId IdType="doi">10.1111/nph.14098</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>New Jersey</li><li>Utah</li><li>État de New York</li></region><settlement><li>Buffalo (New York)</li><li>Princeton (New Jersey)</li></settlement><orgName><li>Université d'État de New York à Buffalo</li><li>Université de Princeton</li></orgName></list><tree><country name="États-Unis"><region name="État de New York"><name sortKey="Tai, Xiaonan" sort="Tai, Xiaonan" uniqKey="Tai X" first="Xiaonan" last="Tai">Xiaonan Tai</name></region><name sortKey="Anderegg, William R L" sort="Anderegg, William R L" uniqKey="Anderegg W" first="William R L" last="Anderegg">William R L. Anderegg</name><name sortKey="Anderegg, William R L" sort="Anderegg, William R L" uniqKey="Anderegg W" first="William R L" last="Anderegg">William R L. Anderegg</name><name sortKey="Brooks, Paul D" sort="Brooks, Paul D" uniqKey="Brooks P" first="Paul D" last="Brooks">Paul D. Brooks</name><name sortKey="Mackay, D Scott" sort="Mackay, D Scott" uniqKey="Mackay D" first="D Scott" last="Mackay">D Scott Mackay</name><name sortKey="Sperry, John S" sort="Sperry, John S" uniqKey="Sperry J" first="John S" last="Sperry">John S. Sperry</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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