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  Sun-induced fluorescence and gross primary productivity during a heat wave

Wohlfahrt, G., Gerdel, K., Migliavacca, M., Rotenberg, E., Tatarinov, F., Müller, J., et al. (2018). Sun-induced fluorescence and gross primary productivity during a heat wave. Scientific Reports, 8: 14169. doi:10.1038/s41598-018-32602-z.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-44DB-B Version Permalink: http://hdl.handle.net/21.11116/0000-0002-44DC-A
Genre: Journal Article

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http://dx.doi.org/10.1038/s41598-018-32602-z (Publisher version)
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 Creators:
Wohlfahrt, G., Author
Gerdel, K., Author
Migliavacca, Mirco1, Author              
Rotenberg, E., Author
Tatarinov, F., Author
Müller, J., Author
Hammerle, A., Author
Julitta, T., Author
Spielmann, F. M., Author
Yakir, D., Author
Affiliations:
1Biosphere-Atmosphere Interactions and Experimentation, Dr. M. Migliavacca, Department Biogeochemical Integration, Dr. M. Reichstein, Max Planck Institute for Biogeochemistry, Max Planck Society, ou_1938307              

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 Abstract: Remote sensing of sun-induced chlorophyll fluorescence (SIF) has been suggested as a promising approach for probing changes in global terrestrial gross primary productivity (GPP). To date, however, most studies were conducted in situations when/where changes in both SIF and GPP were driven by large changes in the absorbed photosynthetically active radiation (APAR) and phenology. Here we quantified SIF and GPP during a short-term intense heat wave at a Mediterranean pine forest, during which changes in APAR were negligible. GPP decreased linearly during the course of the heat wave, while SIF declined slightly initially and then dropped dramatically during the peak of the heat wave, temporally coinciding with a biochemical impairment of photosynthesis inferred from the increase in the uptake ratio of carbonyl sulfide to carbon dioxide. SIF thus accounted for less than 35% of the variability in GPP and, even though it responded to the impairment of photosynthesis, appears to offer limited potential for quantitatively monitoring GPP during heat waves in the absence of large changes in APAR.

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 Dates: 2018-09-122018-09-21
 Publication Status: Published online
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 Identifiers: Other: BGC2922
DOI: 10.1038/s41598-018-32602-z
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Title: Scientific Reports
  Abbreviation : Sci. Rep.
Source Genre: Journal
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Publ. Info: London, UK : Nature Publishing Group
Pages: - Volume / Issue: 8 Sequence Number: 14169 Start / End Page: - Identifier: ISSN: 2045-2322
CoNE: https://pure.mpg.de/cone/journals/resource/2045-2322