Journal Article

FZJ-2017-01788

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Plant functional traits and canopy structure control the relationship between photosynthetic CO$_{2}$ uptake and far-red sun-induced fluorescence in a Mediterranean grassland under different nutrient availability

Migliavacca, M. (Corresponding author) ; Perez-Priego, O. ; Rossini, M. ; El-Madany, T. S. ; Moreno, G. ; van der Tol, C. ; Rascher, U.FZJ* ; Berninger, A. ; Bessenbacher, V. ; Burkart, A.FZJ* ; Carrara, A. ; Fava, F. ; Guan, J.-H. ; Hammer, T. W. ; Henkel, K. ; Juarez-Alcalde, E. ; Julitta, T. ; Kolle, O. ; Martín, M. P. ; Musavi, T. ; Pacheco-Labrador, J. ; Pérez-Burgueño, A. ; Wutzler, T. ; Zaehle, S. ; Reichstein, M.

2017
Wiley-Blackwell Oxford [u.a.]

This record in other databases:      

Please use a persistent id in citations: doi:10.1111/nph.14437

Abstract: Sun-induced fluorescence (SIF) in the far-red region provides a new noninvasive measurement approach that has the potential to quantify dynamic changes in light-use efficiency and gross primary production (GPP). However, the mechanistic link between GPP and SIF is not completely understood.We analyzed the structural and functional factors controlling the emission of SIF at 760 nm (F760) in a Mediterranean grassland manipulated with nutrient addition of nitrogen (N), phosphorous (P) or nitrogen–phosphorous (NP). Using the soil–canopy observation of photosynthesis and energy (SCOPE) model, we investigated how nutrient-induced changes in canopy structure (i.e. changes in plant forms abundance that influence leaf inclination distribution function, LIDF) and functional traits (e.g. N content in dry mass of leaves, N%, Chlorophyll a+b concentration (Cab) and maximum carboxylation capacity (Vcmax)) affected the observed linear relationship between F760 and GPP.We conclude that the addition of nutrients imposed a change in the abundance of different plant forms and biochemistry of the canopy that controls F760. Changes in canopy structure mainly control the GPP–F760 relationship, with a secondary effect of Cab and Vcmax.In order to exploit F760 data to model GPP at the global/regional scale, canopy structural variability, biodiversity and functional traits are important factors that have to be considered.

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Contributing Institute(s):

1. Pflanzenwissenschaften (IBG-2)

Research Program(s):

1. 582 - Plant Science (POF3-582) (POF3-582)

Appears in the scientific report 2017

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Database coverage:
; BIOSIS Previews ; Current Contents - Agriculture, Biology and Environmental Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; National-Konsortium ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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