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On quantifying the apparent temperature sensitivity of plant phenology

hal.structure.identifierUniversity of California [Berkeley] [UC Berkeley]
hal.structure.identifierLawrence Berkeley National Laboratory [Berkeley] [LBNL]
dc.contributor.authorKEENAN, Trevor F.
hal.structure.identifierSchool of Informatics, Computing, and Cyber Systems [SICCS]
hal.structure.identifierNorthern Arizona University [Flagstaff]
dc.contributor.authorRICHARDSON, Andrew D.
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierDepartment of Applied Ecology and Environmental Biology
dc.contributor.authorHUFKENS, Koen
dc.date.accessioned2024-04-08T12:06:43Z
dc.date.available2024-04-08T12:06:43Z
dc.date.issued2020
dc.identifier.issn0028-646X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196422
dc.description.abstractEnMany plant phenological events are sensitive to temperature, leading to changes in the seasonal cycle of ecosystem function as the climate warms. To evaluate the current and future implications of temperature changes for plant phenology, researchers commonly use a metric of temperature sensitivity, which quantifies the change in phenology per degree change in temperature. Here, we examine the temperature sensitivity of phenology, and highlight conditions under which the widely used days-per-degree sensitivity approach is subject to methodological issues that can generate misleading results. We identify several factors, in particular the length of the period over which temperature is integrated, and changes in the statistical characteristics of the integrated temperature, that can affect the estimated apparent sensitivity to temperature. We show how the resulting artifacts can lead to spurious differences in apparent temperature sensitivity and artificial spatial gradients. Such issues are rarely considered in analyses of the temperature sensitivity of phenology. Given the issues identified, we advocate for process-oriented modelling approaches, informed by observations and with fully characterised uncertainties, as a more robust alternative to the simple days-per-degree temperature sensitivity metric. We also suggest approaches to minimise and assess spurious influences in the days-per-degree metric.
dc.language.isoen
dc.publisherWiley
dc.subjectautumn
dc.subject.enbud-burst
dc.subject.enecosystem
dc.subject.engrowing degree days
dc.subject.enland surface
dc.subject.enspring
dc.subject.enwarming
dc.title.enOn quantifying the apparent temperature sensitivity of plant phenology
dc.typeArticle de revue
dc.identifier.doi10.1111/nph.16114
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalNew Phytologist
bordeaux.page1033-1040
bordeaux.volume225
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02619901
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02619901v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=New%20Phytologist&rft.date=2020&rft.volume=225&rft.issue=2&rft.spage=1033-1040&rft.epage=1033-1040&rft.eissn=0028-646X&rft.issn=0028-646X&rft.au=KEENAN,%20Trevor%20F.&RICHARDSON,%20Andrew%20D.&HUFKENS,%20Koen&rft.genre=article


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