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000044106 084__ $$2WoS$$aBiodiversity Conservation
000044106 084__ $$2WoS$$aEcology
000044106 084__ $$2WoS$$aEnvironmental Sciences
000044106 1001_ $$0P:(DE-Juel1)VDB2595$$aWalter, A.$$b0$$uFZJ
000044106 245__ $$aThe effect of elevated CO2 on diel leaf growth cycle, leaf carbohydrate content and canopy growth performance of Populus deltoides
000044106 260__ $$aOxford [u.a.]$$bWiley-Blackwell$$c2005
000044106 300__ $$a1207 - 1219
000044106 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000044106 440_0 $$011441$$aGlobal Change Biology$$v11$$x1354-1013$$y8
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000044106 520__ $$aImage sequence processing methods were applied to study the effect of elevated CO2 on the diel leaf growth cycle for the first time in a dicot plant. Growing leaves of Populus deltoides, in stands maintained under ambient and elevated CO2 for up to 4 years, showed a high degree of heterogeneity and pronounced diel variations of their relative growth rate (RGR) with maxima at dusk. At the beginning of the season, leaf growth did not differ between treatments. At the end of the season, final individual leaf area and total leaf biomass of the canopy was increased in elevated CO2. Increased final leaf area at elevated CO2 was achieved via a prolonged phase of leaf expansion activity and not via larger leaf size upon emergence. The fraction of leaves growing at 30–40% day−1 was increased by a factor of two in the elevated CO2 treatment. A transient minimum of leaf expansion developed during the late afternoon in leaves grown under elevated CO2 as the growing season progressed. During this minimum, leaves grown under elevated CO2 decreased their RGR to 50% of the ambient value. The transient growth minimum in the afternoon was correlated with a transient depletion of glucose (less than 50%) in the growing leaf in elevated CO2, suggesting diversion of glucose to starch or other carbohydrates, making this substrate temporarily unavailable for growth. Increased leaf growth was observed at the end of the night in elevated CO2. Net CO2 exchange and starch concentration of growing leaves was higher in elevated CO2. The extent to which the transient reduction in diel leaf growth might dampen the overall growth response of these trees to elevated CO2 is discussed.
000044106 536__ $$0G:(DE-Juel1)FUEK257$$2G:(DE-HGF)$$aChemie und Dynamik der Geo-Biosphäre$$cU01$$x0
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000044106 65320 $$2Author$$abiomass
000044106 65320 $$2Author$$aBiosphere 2 Laboratory
000044106 65320 $$2Author$$acarbohydrates
000044106 65320 $$2Author$$aelevated CO2
000044106 65320 $$2Author$$agas exchange
000044106 65320 $$2Author$$aimage processing
000044106 65320 $$2Author$$aleaf growth
000044106 7001_ $$0P:(DE-Juel1)VDB11021$$aChrist, M. M.$$b1$$uFZJ
000044106 7001_ $$0P:(DE-HGF)0$$aBarron-Gafford, G. A.$$b2
000044106 7001_ $$0P:(DE-HGF)0$$aGrieve, K. A.$$b3
000044106 7001_ $$0P:(DE-HGF)0$$aPaige, T.$$b4
000044106 7001_ $$0P:(DE-HGF)0$$aMurthy, R.$$b5
000044106 7001_ $$0P:(DE-Juel1)129388$$aRascher, U.$$b6$$uFZJ
000044106 773__ $$0PERI:(DE-600)2020313-5$$a10.1111/j.1365-2486.2005.00990.x$$gVol. 11, p. 1207 - 1219$$p1207 - 1219$$q11<1207 - 1219$$tGlobal change biology$$v11$$x1354-1013$$y2005
000044106 8567_ $$uhttp://dx.doi.org/10.1111/j.1365-2486.2005.00990.x
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000044106 9131_ $$0G:(DE-Juel1)FUEK257$$bEnvironment (Umwelt)$$kU01$$lChemie und Dynamik der Geo-Biosphäre$$vChemie und Dynamik der Geo-Biosphäre$$x0
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