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000007581 084__ $$2WoS$$aBiodiversity Conservation
000007581 084__ $$2WoS$$aEcology
000007581 084__ $$2WoS$$aEnvironmental Sciences
000007581 1001_ $$0P:(DE-HGF)0$$aDamm, A.$$b0
000007581 245__ $$aRemote sensing of sun-induced fluorescence to improve modeling of diurnal courses of gross primary production (GPP)
000007581 260__ $$aOxford [u.a.]$$bWiley-Blackwell$$c2010
000007581 300__ $$a171 - 186
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000007581 440_0 $$011441$$aGlobal Change Biology$$v16$$x1354-1013$$y1
000007581 500__ $$aThis work was supported by a grant of the ESA in the frame of the CEFLES2 campaign (grant no. 20802/07/LG). We also thank Remo Bianchi and Michael Berger for their organizational support. The authors acknowledge Giovanni Agati (CNR-IFAC, Florence), Roberto Colombo (UNIMIB, Milan), Gloria Fernandez, Luis Alonso and Jordi Garcia (RSU, University of Valencia), Alessandro Zaldei and Piero Toscano (CNR-IBIMET, Florence), Jonas Franke (University of Bonn) and Marion Stellmes (University of Trier) for there valuable help during the field campaigns. The authors are also thankful to the two anonymous reviewers who provided constructive comments to improve this manuscript.
000007581 520__ $$aTerrestrial gross primary production (GPP) is an important parameter to explore and quantify carbon fixation by plant ecosystems at various scales. Remote sensing (RS) offers a unique possibility to investigate GPP in a spatially explicit fashion; however, budgeting of terrestrial carbon cycles based on this approach still remains uncertain. To improve calculations, spatio-temporal variability of GPP must be investigated in more detail on local and regional scales. The overarching goal of this study is to enhance our knowledge on how environmentally induced changes of photosynthetic light-use efficiency (LUE) are linked with optical RS parameters. Diurnal courses of sun-induced fluorescence yield (FSyield) and the photochemical reflectance index of corn were derived from high-resolution spectrometric measurements and their potential as proxies for LUE was investigated. GPP was modeled using Monteith's LUE-concept and optical-based GPP and LUE values were compared with synoptically acquired eddy covariance data. It is shown that the diurnal response of complex physiological regulation of photosynthesis can be tracked reliably with the sun-induced fluorescence. Considering structural and physiological effects, this research shows for the first time that including sun-induced fluorescence into modeling approaches improves their results in predicting diurnal courses of GPP. Our results support the hypothesis that air- or spaceborne quantification of sun-induced fluorescence yield may become a powerful tool to better understand spatio-temporal variations of fluorescence yield, photosynthetic efficiency and plant stress on a global scale.
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000007581 65320 $$2Author$$adiurnal carbon uptake
000007581 65320 $$2Author$$aeddy covariance
000007581 65320 $$2Author$$afluorescence yield
000007581 65320 $$2Author$$aGPP
000007581 65320 $$2Author$$aLUE
000007581 65320 $$2Author$$aPRI
000007581 65320 $$2Author$$aremote sensing
000007581 65320 $$2Author$$aspectroscopy
000007581 65320 $$2Author$$asun-induced fluorescence
000007581 7001_ $$0P:(DE-Juel1)VDB84927$$aErler, A.$$b1$$uFZJ
000007581 7001_ $$0P:(DE-HGF)0$$aGioli, B.$$b2
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000007581 7001_ $$0P:(DE-HGF)0$$aHutjes, R.$$b4
000007581 7001_ $$0P:(DE-HGF)0$$aKosvancova, M.$$b5
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000007581 7001_ $$0P:(DE-HGF)0$$aMoreno, J.$$b9
000007581 7001_ $$0P:(DE-Juel1)7338$$aSchickling, A.$$b10$$uFZJ
000007581 7001_ $$0P:(DE-HGF)0$$aSonnenschein, R.$$b11
000007581 7001_ $$0P:(DE-HGF)0$$aUdelhoven, T.$$b12
000007581 7001_ $$0P:(DE-HGF)0$$avan der Linden, S.$$b13
000007581 7001_ $$0P:(DE-HGF)0$$avan der Tool, C.$$b14
000007581 7001_ $$0P:(DE-HGF)0$$aHostert, P.$$b15
000007581 7001_ $$0P:(DE-Juel1)129388$$aRascher, U.$$b16$$uFZJ
000007581 773__ $$0PERI:(DE-600)2020313-5$$a10.1111/j.1365-2486.2009.01908.x$$gVol. 16, p. 171 - 186$$p171 - 186$$q16<171 - 186$$tGlobal change biology$$v16$$x1354-1013$$y2010
000007581 8567_ $$uhttp://dx.doi.org/10.1111/j.1365-2486.2009.01908.x
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