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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1111/gcb.13102
|2 doi
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|a pubmed24n0843.xml
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|a (DE-627)NLM252955110
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|a (NLM)26391334
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Voelker, Steven L
|e verfasserin
|4 aut
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|a A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2
|b evidence from carbon isotope discrimination in paleo and CO2 enrichment studies
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|c 2016
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 19.10.2016
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|a Date Revised 16.11.2017
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2015 John Wiley & Sons Ltd.
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|a Rising atmospheric [CO2 ], ca , is expected to affect stomatal regulation of leaf gas-exchange of woody plants, thus influencing energy fluxes as well as carbon (C), water, and nutrient cycling of forests. Researchers have proposed various strategies for stomatal regulation of leaf gas-exchange that include maintaining a constant leaf internal [CO2 ], ci , a constant drawdown in CO2 (ca - ci ), and a constant ci /ca . These strategies can result in drastically different consequences for leaf gas-exchange. The accuracy of Earth systems models depends in part on assumptions about generalizable patterns in leaf gas-exchange responses to varying ca . The concept of optimal stomatal behavior, exemplified by woody plants shifting along a continuum of these strategies, provides a unifying framework for understanding leaf gas-exchange responses to ca . To assess leaf gas-exchange regulation strategies, we analyzed patterns in ci inferred from studies reporting C stable isotope ratios (δ(13) C) or photosynthetic discrimination (∆) in woody angiosperms and gymnosperms that grew across a range of ca spanning at least 100 ppm. Our results suggest that much of the ca -induced changes in ci /ca occurred across ca spanning 200 to 400 ppm. These patterns imply that ca - ci will eventually approach a constant level at high ca because assimilation rates will reach a maximum and stomatal conductance of each species should be constrained to some minimum level. These analyses are not consistent with canalization toward any single strategy, particularly maintaining a constant ci . Rather, the results are consistent with the existence of a broadly conserved pattern of stomatal optimization in woody angiosperms and gymnosperms. This results in trees being profligate water users at low ca , when additional water loss is small for each unit of C gain, and increasingly water-conservative at high ca , when photosystems are saturated and water loss is large for each unit C gain
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a angiosperm
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|a carbon dioxide
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|a free-air CO2 enrichment
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|a gymnosperm
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|a optimal stomatal behavior
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| 650 |
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|a photosynthesis
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|a stomatal conductance
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|a water use efficiency
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|a Carbon Isotopes
|2 NLM
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| 650 |
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|a Carbon Dioxide
|2 NLM
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| 650 |
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7 |
|a 142M471B3J
|2 NLM
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1 |
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|a Brooks, J Renée
|e verfasserin
|4 aut
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1 |
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|a Meinzer, Frederick C
|e verfasserin
|4 aut
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|a Anderson, Rebecca
|e verfasserin
|4 aut
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1 |
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|a Bader, Martin K-F
|e verfasserin
|4 aut
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|a Battipaglia, Giovanna
|e verfasserin
|4 aut
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|a Becklin, Katie M
|e verfasserin
|4 aut
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|a Beerling, David
|e verfasserin
|4 aut
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|a Bert, Didier
|e verfasserin
|4 aut
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|a Betancourt, Julio L
|e verfasserin
|4 aut
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|a Dawson, Todd E
|e verfasserin
|4 aut
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|a Domec, Jean-Christophe
|e verfasserin
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|a Guyette, Richard P
|e verfasserin
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|a Körner, Christian
|e verfasserin
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|a Leavitt, Steven W
|e verfasserin
|4 aut
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|a Linder, Sune
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|4 aut
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|a Marshall, John D
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|a Mildner, Manuel
|e verfasserin
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|a Ogée, Jérôme
|e verfasserin
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|a Panyushkina, Irina
|e verfasserin
|4 aut
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|a Plumpton, Heather J
|e verfasserin
|4 aut
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|a Pregitzer, Kurt S
|e verfasserin
|4 aut
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|a Saurer, Matthias
|e verfasserin
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|a Smith, Andrew R
|e verfasserin
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|a Siegwolf, Rolf T W
|e verfasserin
|4 aut
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|a Stambaugh, Michael C
|e verfasserin
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|a Talhelm, Alan F
|e verfasserin
|4 aut
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|a Tardif, Jacques C
|e verfasserin
|4 aut
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|a Van de Water, Peter K
|e verfasserin
|4 aut
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|a Ward, Joy K
|e verfasserin
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|a Wingate, Lisa
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Global change biology
|d 1999
|g 22(2016), 2 vom: 14. Feb., Seite 889-902
|w (DE-627)NLM098239996
|x 1365-2486
|7 nnns
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| 773 |
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|g volume:22
|g year:2016
|g number:2
|g day:14
|g month:02
|g pages:889-902
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|u http://dx.doi.org/10.1111/gcb.13102
|3 Volltext
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