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Migliavacca M, Perez-Priego O, Rossini M, El-Madany TS, Moreno G, van der Tol C, Rascher U, Berninger A, Bessenbacher V, Burkart A, Carrara A, Fava F, Guan JH, Hammer TW, Henkel K, Juarez-Alcalde E, Julitta T, Kolle O, Martín MP, Musavi T, Pacheco-Labrador J, Pérez-Burgueño A, Wutzler T, Zaehle S, Reichstein M. 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. New Phytol 2017; 214:1078-1091. [PMID: 28181244 DOI: 10.1111/nph.14437] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 12/08/2016] [Indexed: 06/06/2023]
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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Affiliation(s)
- Mirco Migliavacca
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Oscar Perez-Priego
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Micol Rossini
- University of Milano Bicocca, Piazza della Scienza 1, Milan, 20126, Italy
| | - Tarek S El-Madany
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Gerardo Moreno
- INDEHESA-Forest Research Group, Universidad de Extremadura, Plasencia, 10600, Spain
| | - Christiaan van der Tol
- Department of Water Resources, Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente, Enschede, 7500 AE, the Netherlands
| | - Uwe Rascher
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., Jülich, 52425, Germany
| | - Anna Berninger
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Verena Bessenbacher
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Andreas Burkart
- Institute of Bio- and Geosciences, IBG-2: Plant Sciences, Forschungszentrum Jülich GmbH, Leo-Brandt-Str., Jülich, 52425, Germany
| | - Arnaud Carrara
- Fundación Centro de Estudios Ambientales del Mediterráneo (CEAM), Valencia, 46980, Spain
| | - Francesco Fava
- International Livestock Research Institute, Naivasha Rd, Nairobi, 30709, Kenya
| | - Jin-Hong Guan
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
- State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Tiana W Hammer
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Kathrin Henkel
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | | | - Tommaso Julitta
- University of Milano Bicocca, Piazza della Scienza 1, Milan, 20126, Italy
| | - Olaf Kolle
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - M Pilar Martín
- Environmental Remote Sensing and Spectroscopy Laboratory (SpecLab), Institute of Economics, Geography and Demography (IEGD), Spanish National Research Council (CSIC), Albasanz 26-28, Madrid, 28037, Spain
| | - Talie Musavi
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Javier Pacheco-Labrador
- Environmental Remote Sensing and Spectroscopy Laboratory (SpecLab), Institute of Economics, Geography and Demography (IEGD), Spanish National Research Council (CSIC), Albasanz 26-28, Madrid, 28037, Spain
| | | | - Thomas Wutzler
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Sönke Zaehle
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
| | - Markus Reichstein
- Max Planck Institute for Biogeochemistry, Hans Knöll Straße 10, Jena, D-07745, Germany
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