GennarettiBoucherNicaultEtAl2018

Référence

Gennaretti, F., Boucher, E., Nicault, A., Gea-Izquierdo, G., Arseneault, D., Berninger, F., Savard, M.M., Bégin, C. and Guiot, J. (2018) Underestimation of the Tambora effects in North American taiga ecosystems. Environmental Research Letters, 13(3). (Scopus )

Résumé

The Tambora eruption (1815 AD) was one of the major eruptions of the last two millennia and has no equivalents over the last two centuries. Here, we collected an extensive network of early meteorological time series, climate simulation data and numerous, well-replicated proxy records from Eastern Canada to analyze the strength and the persistence of the Tambora impact on the regional climate and forest processes. Our results show that the Tambora impacts on the terrestrial biosphere were stronger than previously thought, and not only affected tree growth and carbon uptake for a longer period than registered in the regional climate, but also determined forest demography and structure. Increased tree mortality, four times higher than the background level, indicates that the Tambora climatic impact propagated to influence the structure of the North American taiga for several decades. We also show that the Tambora signal is more persistent in observed data (temperature, river ice dynamics, forest growth, tree mortality) than in simulated ones (climate and forest-growth simulations), indicating that our understanding of the mechanisms amplifying volcanic perturbations on climates and ecosystems is still limited, notably in the North American taiga. © 2018 IOP Publishing Ltd.

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@ARTICLE { GennarettiBoucherNicaultEtAl2018,
    AUTHOR = { Gennaretti, F. and Boucher, E. and Nicault, A. and Gea-Izquierdo, G. and Arseneault, D. and Berninger, F. and Savard, M.M. and Bégin, C. and Guiot, J. },
    TITLE = { Underestimation of the Tambora effects in North American taiga ecosystems },
    JOURNAL = { Environmental Research Letters },
    YEAR = { 2018 },
    VOLUME = { 13 },
    NUMBER = { 3 },
    ISSN = { 17489318 },
    NOTE = { cited By 0 },
    ABSTRACT = { The Tambora eruption (1815 AD) was one of the major eruptions of the last two millennia and has no equivalents over the last two centuries. Here, we collected an extensive network of early meteorological time series, climate simulation data and numerous, well-replicated proxy records from Eastern Canada to analyze the strength and the persistence of the Tambora impact on the regional climate and forest processes. Our results show that the Tambora impacts on the terrestrial biosphere were stronger than previously thought, and not only affected tree growth and carbon uptake for a longer period than registered in the regional climate, but also determined forest demography and structure. Increased tree mortality, four times higher than the background level, indicates that the Tambora climatic impact propagated to influence the structure of the North American taiga for several decades. We also show that the Tambora signal is more persistent in observed data (temperature, river ice dynamics, forest growth, tree mortality) than in simulated ones (climate and forest-growth simulations), indicating that our understanding of the mechanisms amplifying volcanic perturbations on climates and ecosystems is still limited, notably in the North American taiga. © 2018 IOP Publishing Ltd. },
    ART_NUMBER = { 034017 },
    AUTHOR_KEYWORDS = { Eastern Canada; forest demography; mechanisticunderstanding; process-based modeling; regional climate responses; tambora legacy; terrestrial biosphere responses },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1088/1748-9326/aaac0c },
    KEYWORDS = { Biospherics; Ecosystems; Population statistics, Eastern Canada; forest demography; mechanisticunderstanding; Process-based modeling; Regional climate; tambora legacy; Terrestrial biosphere, Forestry },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048213488&doi=10.1088%2f1748-9326%2faaac0c&partnerID=40&md5=ce9c14763fb9e05c1be1801236924fa6 },
}

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