Modeling the date of leaf appearance in low-arctic tundra
International audience One of the reported changes of arctic ecosystems in response to warming climate is the advance of the leaf appearance in spring. Such phenological changes play a role in the structural changes within tundra ecosystem communities. Recently, we developed a model that estimates t...
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ftunigrenoble:oai:HAL:insu-00375946v1 2024-05-12T07:59:09+00:00 Modeling the date of leaf appearance in low-arctic tundra Delbart, Nicolas Picard, Ghislain Centre for Medical Research The University of Western Australia (UWA) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre for Terrestrial Carbon Dynamics Sheffield University of Sheffield Sheffield 2007 https://insu.hal.science/insu-00375946 https://doi.org/10.1111/j.1365-2486.2007.01466.x en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2486.2007.01466.x insu-00375946 https://insu.hal.science/insu-00375946 doi:10.1111/j.1365-2486.2007.01466.x ISSN: 1354-1013 EISSN: 1365-2486 Global Change Biology https://insu.hal.science/insu-00375946 Global Change Biology, 2007, 13 (12), pp.2551 à 2562. ⟨10.1111/j.1365-2486.2007.01466.x⟩ AVHRR boreal earth observation leaf appearance NDVI phenology remote sensing SPOT-VEGETATION taiga tundra [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2007 ftunigrenoble https://doi.org/10.1111/j.1365-2486.2007.01466.x 2024-04-18T03:02:45Z International audience One of the reported changes of arctic ecosystems in response to warming climate is the advance of the leaf appearance in spring. Such phenological changes play a role in the structural changes within tundra ecosystem communities. Recently, we developed a model that estimates the leaf appearance date for deciduous trees in taiga. We apply this model to the whole low-arctic tundra, and we compare the simulated green-up dates with the green-up dates obtained from satellite observations and to in situ measurements of deciduous shrub leaf appearance. The model, although calibrated for taiga, performs remarkably well in tundra, with root mean square error ranging between 4 and 8 days for most of the tundra region, the same order as in taiga regions. The results seem to indicate that air temperature is the main factor controlling spring leaf phenology in tundra, just as in taiga, although these results do not permit us to reject soil temperature as the main trigger for leaf appearance in tundra. Because our model performs in tundra as well as in taiga, it can be used across the ecotone, and during a northward migration of the species from the taiga to the low-arctic region. The leaf appearance model and the satellite observations reveal that leaf appearance has tended to occur earlier by approximately 10 days both in Alaska since 1975, and in west Siberian tundra since 1965. Article in Journal/Newspaper Arctic taiga Tundra Alaska Université Grenoble Alpes: HAL Arctic Global Change Biology 13 12 2551 2562 |
institution |
Open Polar |
collection |
Université Grenoble Alpes: HAL |
op_collection_id |
ftunigrenoble |
language |
English |
topic |
AVHRR boreal earth observation leaf appearance NDVI phenology remote sensing SPOT-VEGETATION taiga tundra [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
AVHRR boreal earth observation leaf appearance NDVI phenology remote sensing SPOT-VEGETATION taiga tundra [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Delbart, Nicolas Picard, Ghislain Modeling the date of leaf appearance in low-arctic tundra |
topic_facet |
AVHRR boreal earth observation leaf appearance NDVI phenology remote sensing SPOT-VEGETATION taiga tundra [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience One of the reported changes of arctic ecosystems in response to warming climate is the advance of the leaf appearance in spring. Such phenological changes play a role in the structural changes within tundra ecosystem communities. Recently, we developed a model that estimates the leaf appearance date for deciduous trees in taiga. We apply this model to the whole low-arctic tundra, and we compare the simulated green-up dates with the green-up dates obtained from satellite observations and to in situ measurements of deciduous shrub leaf appearance. The model, although calibrated for taiga, performs remarkably well in tundra, with root mean square error ranging between 4 and 8 days for most of the tundra region, the same order as in taiga regions. The results seem to indicate that air temperature is the main factor controlling spring leaf phenology in tundra, just as in taiga, although these results do not permit us to reject soil temperature as the main trigger for leaf appearance in tundra. Because our model performs in tundra as well as in taiga, it can be used across the ecotone, and during a northward migration of the species from the taiga to the low-arctic region. The leaf appearance model and the satellite observations reveal that leaf appearance has tended to occur earlier by approximately 10 days both in Alaska since 1975, and in west Siberian tundra since 1965. |
author2 |
Centre for Medical Research The University of Western Australia (UWA) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) Centre for Terrestrial Carbon Dynamics Sheffield University of Sheffield Sheffield |
format |
Article in Journal/Newspaper |
author |
Delbart, Nicolas Picard, Ghislain |
author_facet |
Delbart, Nicolas Picard, Ghislain |
author_sort |
Delbart, Nicolas |
title |
Modeling the date of leaf appearance in low-arctic tundra |
title_short |
Modeling the date of leaf appearance in low-arctic tundra |
title_full |
Modeling the date of leaf appearance in low-arctic tundra |
title_fullStr |
Modeling the date of leaf appearance in low-arctic tundra |
title_full_unstemmed |
Modeling the date of leaf appearance in low-arctic tundra |
title_sort |
modeling the date of leaf appearance in low-arctic tundra |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://insu.hal.science/insu-00375946 https://doi.org/10.1111/j.1365-2486.2007.01466.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic taiga Tundra Alaska |
genre_facet |
Arctic taiga Tundra Alaska |
op_source |
ISSN: 1354-1013 EISSN: 1365-2486 Global Change Biology https://insu.hal.science/insu-00375946 Global Change Biology, 2007, 13 (12), pp.2551 à 2562. ⟨10.1111/j.1365-2486.2007.01466.x⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2486.2007.01466.x insu-00375946 https://insu.hal.science/insu-00375946 doi:10.1111/j.1365-2486.2007.01466.x |
op_doi |
https://doi.org/10.1111/j.1365-2486.2007.01466.x |
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Global Change Biology |
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13 |
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