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Seasonal variation in the canopy color of temperate evergreen conifer forests

hal.structure.identifierNorthern Arizona University [Flagstaff]
dc.contributor.authorSEYEDNASROLLAH, Bijan
hal.structure.identifierUniversity of Utah
dc.contributor.authorBOWLING, David
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorCHENG, Rui
hal.structure.identifierBowdoin College [Brunswick]
dc.contributor.authorLOGAN, Barry
hal.structure.identifierUniversity of California [Davis] [UC Davis]
dc.contributor.authorMAGNEY, Troy
hal.structure.identifierCalifornia Institute of Technology [CALTECH]
dc.contributor.authorFRANKENBERG, Christian
hal.structure.identifierUniversity of Utah
dc.contributor.authorYANG, Julia
hal.structure.identifierNorthern Arizona University [Flagstaff]
dc.contributor.authorYOUNG, Adam
hal.structure.identifierUniversiteit Gent = Ghent University [UGENT]
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorHUFKENS, Koen
hal.structure.identifierMcMaster University [Hamilton, Ontario]
dc.contributor.authorARAIN, M. Altaf
dc.contributor.authorBLACK, T. Andrew
dc.contributor.authorBLANKEN, Peter
dc.contributor.authorBRACHO, Rosvel
dc.contributor.authorJASSAL, Rachhpal
dc.contributor.authorHOLLINGER, David
dc.contributor.authorLAW, Beverly
dc.contributor.authorNESIC, Zoran
dc.contributor.authorRICHARDSON, Andrew
dc.date.accessioned2024-04-08T11:52:13Z
dc.date.available2024-04-08T11:52:13Z
dc.date.issued2021
dc.identifier.issn0028-646X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195472
dc.description.abstractEnEvergreen conifer forests are the most prevalent land cover type in North America. Seasonal changes in the color of evergreen forest canopies have been documented with near-surface remote sensing, but the physiological mechanisms underlying these changes, and the implications for photosynthetic uptake, have not been fully elucidated. Here, we integrate on-the-ground phenological observations, leaf-level physiological measurements, near surface hyperspectral remote sensing and digital camera imagery, towerbased CO 2 flux measurements, and a predictive model to simulate seasonal canopy color dynamics. We show that seasonal changes in canopy color occur independently of new leaf production, but track changes in chlorophyll fluorescence, the photochemical reflectance index, and leaf pigmentation. We demonstrate that at winter-dormant sites, seasonal changes in canopy color can be used to predict the onset of canopy-level photosynthesis in spring, and its cessation in autumn. Finally, we parameterize a simple temperature-based model to predict the seasonal cycle of canopy greenness, and we show that the model successfully simulates interannual variation in the timing of changes in canopy color. These results provide mechanistic insight into the factors driving seasonal changes in evergreen canopy color and provide opportunities to monitor and model seasonal variation in photosynthetic activity using color-based vegetation indices.
dc.language.isoen
dc.publisherWiley
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enAmeriFlux
dc.subject.enevergreen conifer
dc.subject.enPhenoCam
dc.subject.enphenology
dc.subject.enPRI
dc.subject.enseasonality
dc.subject.enxanthophyll
dc.title.enSeasonal variation in the canopy color of temperate evergreen conifer forests
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.17046
dc.subject.halSciences de l'environnement
bordeaux.journalNew Phytologist
bordeaux.page2586 - 2600
bordeaux.volume229
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue5
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03173540
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03173540v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2021&rft.volume=229&rft.issue=5&rft.spage=2586%20-%202600&rft.epage=2586%20-%202600&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=SEYEDNASROLLAH,%20Bijan&BOWLING,%20David&CHENG,%20Rui&LOGAN,%20Barry&MAGNEY,%20Troy&rft.genre=article


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