Trends in seedling growth and carbon-use efficiency vary among broadleaf tree species along a latitudinal transect in eastern North America.
Identifieur interne : 001F83 ( Main/Exploration ); précédent : 001F82; suivant : 001F84Trends in seedling growth and carbon-use efficiency vary among broadleaf tree species along a latitudinal transect in eastern North America.
Auteurs : Dylan N. Dillaway [États-Unis] ; Eric L. KrugerSource :
- Global change biology [ 1365-2486 ] ; 2014.
Descripteurs français
- KwdFr :
- Amérique du Nord (MeSH), Betula (croissance et développement), Betula (métabolisme), Carbone (métabolisme), Changement climatique (MeSH), Feuilles de plante (croissance et développement), Feuilles de plante (métabolisme), Liquidambar (croissance et développement), Liquidambar (métabolisme), Photosynthèse (MeSH), Plant (croissance et développement), Plant (métabolisme), Populus (croissance et développement), Populus (métabolisme), Température (MeSH).
- MESH :
- croissance et développement : Betula, Feuilles de plante, Liquidambar, Plant, Populus.
- métabolisme : Betula, Carbone, Feuilles de plante, Liquidambar, Plant, Populus.
- Amérique du Nord, Changement climatique, Photosynthèse, Température.
English descriptors
- KwdEn :
- Betula (growth & development), Betula (metabolism), Carbon (metabolism), Climate Change (MeSH), Liquidambar (growth & development), Liquidambar (metabolism), North America (MeSH), Photosynthesis (MeSH), Plant Leaves (growth & development), Plant Leaves (metabolism), Populus (growth & development), Populus (metabolism), Seedlings (growth & development), Seedlings (metabolism), Temperature (MeSH).
- MESH :
- chemical , metabolism : Carbon.
- geographic : North America.
- growth & development : Betula, Liquidambar, Plant Leaves, Populus, Seedlings.
- metabolism : Betula, Liquidambar, Plant Leaves, Populus, Seedlings.
- Climate Change, Photosynthesis, Temperature.
Abstract
Factors constraining the geographic ranges of broadleaf tree species in eastern North America were examined in common gardens along a ~1500 km latitudinal transect travers in grange boundaries of four target species: trembling aspen (Populus tremuloides) and paper birch (Betula papyrifera) to the north vs. eastern cottonwood (Populus deltoides) and sweet gum (Liquidambar styraciflua) to the south. In 2006 and 2007, carbon-use efficiency (CUE), the proportion of assimilated carbon retained in biomass, was estimated for seedlings of the four species as the quotient of relative growth rate (RGR) and photosynthesis per unit tree mass (Atree ). In aspen and birch, CUE and RGR declined significantly with increasing growth temperature, which spanned 9 °C across gardens and years. The 37% (relative) CUE decrease from coolest to warmest garden correlated with increases in leaf nighttime respiration (Rleaf ) and the ratio of Rleaf to leaf photosynthesis (R%A ). For cottonwood and sweet gum, however, similar increases in Rleaf and R%A accompanied modest CUE declines, implying that processes other than Rleaf were responsible for species differences in CUE's temperature response. Our findings illustrate marked taxonomic variation, at least among young trees, in the thermal sensitivity of CUE, and point to potentially negative consequences of climate warming for the carbon balance, competitive ability, and persistence of two foundation species in northern temperate and boreal forests.
DOI: 10.1111/gcb.12427
PubMed: 24130066
Affiliations:
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In 2006 and 2007, carbon-use efficiency (CUE), the proportion of assimilated carbon retained in biomass, was estimated for seedlings of the four species as the quotient of relative growth rate (RGR) and photosynthesis per unit tree mass (Atree ). In aspen and birch, CUE and RGR declined significantly with increasing growth temperature, which spanned 9 °C across gardens and years. The 37% (relative) CUE decrease from coolest to warmest garden correlated with increases in leaf nighttime respiration (Rleaf ) and the ratio of Rleaf to leaf photosynthesis (R%A ). For cottonwood and sweet gum, however, similar increases in Rleaf and R%A accompanied modest CUE declines, implying that processes other than Rleaf were responsible for species differences in CUE's temperature response. Our findings illustrate marked taxonomic variation, at least among young trees, in the thermal sensitivity of CUE, and point to potentially negative consequences of climate warming for the carbon balance, competitive ability, and persistence of two foundation species in northern temperate and boreal forests. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24130066</PMID><DateCompleted><Year>2014</Year><Month>09</Month><Day>16</Day></DateCompleted><DateRevised><Year>2015</Year><Month>11</Month><Day>19</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-2486</ISSN><JournalIssue CitedMedium="Internet"><Volume>20</Volume><Issue>3</Issue><PubDate><Year>2014</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Global change biology</Title><ISOAbbreviation>Glob Chang Biol</ISOAbbreviation></Journal><ArticleTitle>Trends in seedling growth and carbon-use efficiency vary among broadleaf tree species along a latitudinal transect in eastern North America.</ArticleTitle><Pagination><MedlinePgn>908-22</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/gcb.12427</ELocationID><Abstract><AbstractText>Factors constraining the geographic ranges of broadleaf tree species in eastern North America were examined in common gardens along a ~1500 km latitudinal transect travers in grange boundaries of four target species: trembling aspen (Populus tremuloides) and paper birch (Betula papyrifera) to the north vs. eastern cottonwood (Populus deltoides) and sweet gum (Liquidambar styraciflua) to the south. In 2006 and 2007, carbon-use efficiency (CUE), the proportion of assimilated carbon retained in biomass, was estimated for seedlings of the four species as the quotient of relative growth rate (RGR) and photosynthesis per unit tree mass (Atree ). In aspen and birch, CUE and RGR declined significantly with increasing growth temperature, which spanned 9 °C across gardens and years. The 37% (relative) CUE decrease from coolest to warmest garden correlated with increases in leaf nighttime respiration (Rleaf ) and the ratio of Rleaf to leaf photosynthesis (R%A ). For cottonwood and sweet gum, however, similar increases in Rleaf and R%A accompanied modest CUE declines, implying that processes other than Rleaf were responsible for species differences in CUE's temperature response. Our findings illustrate marked taxonomic variation, at least among young trees, in the thermal sensitivity of CUE, and point to potentially negative consequences of climate warming for the carbon balance, competitive ability, and persistence of two foundation species in northern temperate and boreal forests. </AbstractText><CopyrightInformation>© 2013 John Wiley & Sons Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Dillaway</LastName><ForeName>Dylan N</ForeName><Initials>DN</Initials><AffiliationInfo><Affiliation>Department of Forest and Wildlife Ecology, University of Wisconsin-Madison, Madison, WI 53706, USA; Unity College, Unity, ME 04988, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Kruger</LastName><ForeName>Eric L</ForeName><Initials>EL</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType 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MajorTopicYN="Y">Populus</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D036226" MajorTopicYN="N">Seedlings</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013696" MajorTopicYN="N">Temperature</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">boreal forest</Keyword><Keyword MajorTopicYN="N">carbon-use efficiency</Keyword><Keyword MajorTopicYN="N">climate</Keyword><Keyword MajorTopicYN="N">deciduous broadleaf trees</Keyword><Keyword MajorTopicYN="N">growth</Keyword><Keyword MajorTopicYN="N">photosynthesis</Keyword><Keyword MajorTopicYN="N">respiration</Keyword><Keyword MajorTopicYN="N">temperate forest</Keyword><Keyword MajorTopicYN="N">temperature</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2012</Year><Month>11</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2013</Year><Month>09</Month><Day>14</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>10</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2013</Year><Month>10</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2014</Year><Month>9</Month><Day>17</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24130066</ArticleId><ArticleId IdType="doi">10.1111/gcb.12427</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Maine (État)</li></region></list><tree><noCountry><name sortKey="Kruger, Eric L" sort="Kruger, Eric L" uniqKey="Kruger E" first="Eric L" last="Kruger">Eric L. Kruger</name></noCountry><country name="États-Unis"><region name="Maine (État)"><name sortKey="Dillaway, Dylan N" sort="Dillaway, Dylan N" uniqKey="Dillaway D" first="Dylan N" last="Dillaway">Dylan N. Dillaway</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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