Diurnal and Seasonal Variations in Chlorophyll Fluorescence Associated with Photosynthesis at Leaf and Canopy Scales

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dc.contributor.authorCampbell, Petya Entcheva
dc.contributor.authorHuemmrich, Karl
dc.contributor.authorMiddleton, Elizabeth M.
dc.contributor.authorWard, Lauren A.
dc.contributor.authorJulitta, Tommaso
dc.contributor.authorDaughtry, Craig S. T.
dc.contributor.authorBurkart, Andreas
dc.contributor.authorRuss, Andrew L.
dc.contributor.authorKustas, William P.
dc.date.accessioned2019-03-21T18:13:12Z
dc.date.available2019-03-21T18:13:12Z
dc.date.issued2019-02-27
dc.description.abstractThere is a critical need for sensitive remote sensing approaches to monitor the parameters governing photosynthesis, at the temporal scales relevant to their natural dynamics. The photochemical reflectance index (PRI) and chlorophyll fluorescence (F) offer a strong potential for monitoring photosynthesis at local, regional, and global scales, however the relationships between photosynthesis and solar induced F (SIF) on diurnal and seasonal scales are not fully understood. This study examines how the fine spatial and temporal scale SIF observations relate to leaf level chlorophyll fluorescence metrics (i.e., PSII yield, YII and electron transport rate, ETR), canopy gross primary productivity (GPP), and PRI. The results contribute to enhancing the understanding of how SIF can be used to monitor canopy photosynthesis. This effort captured the seasonal and diurnal variation in GPP, reflectance, F, and SIF in the O2A (SIFA) and O2B (SIFB) atmospheric bands for corn (Zea mays L.) at a study site in Greenbelt, MD. Positive linear relationships of SIF to canopy GPP and to leaf ETR were documented, corroborating published reports. Our findings demonstrate that canopy SIF metrics are able to capture the dynamics in photosynthesis at both leaf and canopy levels, and show that the relationship between GPP and SIF metrics differs depending on the light conditions (i.e., above or below saturation level for photosynthesis). The sum of SIFA and SIFB (SIFA+B), as well as the SIFA+B yield, captured the dynamics in GPP and light use efficiency, suggesting the importance of including SIFB in monitoring photosynthetic function. Further efforts are required to determine if these findings will scale successfully to airborne and satellite levels, and to document the effects of data uncertainties on the scaling.en_US
dc.description.sponsorshipThis research supports the following NASA/ROSES grants: (1) Next Generation UAV Based Spectral Systems for Environmental Monitoring, NNH14ZDA001N-AIST; (2) Prototyping Multi-Source Land Imaging (MuSLI) Canopy Chlorophyll for the assessment of vegetation function and productivity, NNH17ZDA001N-LCLUC; and (3) Spectral Bio-Indicators of Ecosystem Photosynthetic Efficiency, NNH09ZDA001N-TE. The sources of support for co-author L. Ward, include: NASA/GSFC Office of Education, Summer internship 2018; Hawaii Space Grant Consortium at the University of Hawaii and the Michigan Space Grant Consortium, University of Michigan.en_US
dc.description.urihttps://www.mdpi.com/2072-4292/11/5/488en_US
dc.format.extent27 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2jdvn-racv
dc.identifier.citationCampbell, Petya K.E., Karl F. Huemmrich, Elizabeth M. Middleton, Lauren A. Ward, Tommaso Julitta, Craig S.T. Daughtry, Andreas Burkart, Andrew L. Russ, and William P. Kustas. 2019. "Diurnal and Seasonal Variations in Chlorophyll Fluorescence Associated with Photosynthesis at Leaf and Canopy Scales" Remote Sensing 11, no. 5: 488. https://doi.org/10.3390/rs11050488en_US
dc.identifier.urihttps://doi.org/10.3390/rs11050488
dc.identifier.urihttp://hdl.handle.net/11603/13116
dc.language.isoen_USen_US
dc.publisherMDPIen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Physics Department
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/*
dc.subjectcorn (Zea Mays L.)en_US
dc.subjectleaf and canopy photosynthesisen_US
dc.subjectgross primary production (GPP)en_US
dc.subjectlight-adapted chlorophyll fluorescence (F steady state (Fs))en_US
dc.subjectyield to PSII (YII) and electron transport rate (ETR)en_US
dc.subjectsolar induced fluorescence (SIF)en_US
dc.subjectSIF in the O2A (SIFA) and O2B (SIFB) bandsen_US
dc.subjectSIF yielden_US
dc.subjectcorresponding diurnal and seasonal variations in: GPP, YII, ETR, SIFA, SIFB, SIFA+B and SIF yieldsen_US
dc.titleDiurnal and Seasonal Variations in Chlorophyll Fluorescence Associated with Photosynthesis at Leaf and Canopy Scalesen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-0505-4951
dcterms.creatorhttps://orcid.org/0000-0003-4148-9108

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