SavardBeginLaganiereEtAl2019

Référence

Savard, M.M., Bégin, C., Laganière, J., Martineau, C., Marion, J., Stefani, F.O.P., Séguin, A., Smirnoff, A., Bergeron, J., Morency, M.-J., Pare, D. (2019) Anthropogenic N - A global issue examined at regional scale from soils, to fungi, roots and tree rings. In E3S Web of Conferences. (Scopus )

Résumé

Globally increasing anthropogenic airborne emissions of reactive nitrogen (N) generate several environmental issues that require investigating how N accumulation modifies the N cycle. Tree-ring δ15N series may help understanding past and current perturbations in the forest N cycle. Although several studies have addressed this issue, most of them were of local scale or based on short δ15N series. The development of this environmental indicator however would benefit from examining, at the regional scale, the relationships of long tree-ring series with soil N biogeochemical processes. Here we explore these links for tree stands of the oil-sands region in northern Alberta, and the coal-fired power plants region in central Alberta, Canada. We characterize the tree-ring δ15N trends, the N modification rates and bacterial and fungal communities of soil samples collected in the immediate surrounding of the characterized trees. The dataset suggests that specific soil pH, and N-cycling bacterial and fungal communities influence tree-ring δ15N responses to anthropogenic emissions, correlating either directly or inversely. Overall, tree-ring δ15N series may record changes in the forest-N cycle, but their interpretation requires understanding key soil biogeochemical processes. In nature nothing exists alone, Rachel Carson. © The Authors, published by EDP Sciences, 2019.

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@INPROCEEDINGS { SavardBeginLaganiereEtAl2019,
    AUTHOR = { Savard, M.M. and Bégin, C. and Laganière, J. and Martineau, C. and Marion, J. and Stefani, F.O.P. and Séguin, A. and Smirnoff, A. and Bergeron, J. and Morency, M.-J. and Pare, D. },
    TITLE = { Anthropogenic N - A global issue examined at regional scale from soils, to fungi, roots and tree rings },
    YEAR = { 2019 },
    VOLUME = { 98 },
    NOTE = { cited By 0 },
    ABSTRACT = { Globally increasing anthropogenic airborne emissions of reactive nitrogen (N) generate several environmental issues that require investigating how N accumulation modifies the N cycle. Tree-ring δ15N series may help understanding past and current perturbations in the forest N cycle. Although several studies have addressed this issue, most of them were of local scale or based on short δ15N series. The development of this environmental indicator however would benefit from examining, at the regional scale, the relationships of long tree-ring series with soil N biogeochemical processes. Here we explore these links for tree stands of the oil-sands region in northern Alberta, and the coal-fired power plants region in central Alberta, Canada. We characterize the tree-ring δ15N trends, the N modification rates and bacterial and fungal communities of soil samples collected in the immediate surrounding of the characterized trees. The dataset suggests that specific soil pH, and N-cycling bacterial and fungal communities influence tree-ring δ15N responses to anthropogenic emissions, correlating either directly or inversely. Overall, tree-ring δ15N series may record changes in the forest-N cycle, but their interpretation requires understanding key soil biogeochemical processes. In nature nothing exists alone, Rachel Carson. © The Authors, published by EDP Sciences, 2019. },
    AFFILIATION = { Geological Survey of Canada, Lands and Minerals Sector, Natural Resources Canada, 490 de la CouronneQC G1K 9A9, Canada; Canadian Forest Service, Laurentian Forestry Centre, 1055 du P.E.P.S., P.O. Box 10380, Stn. Sainte-Foy, QC G1V 4C7, Canada },
    ART_NUMBER = { 13001 },
    DOCUMENT_TYPE = { Conference Paper },
    DOI = { 10.1051/e3sconf/20199813001 },
    JOURNAL = { E3S Web of Conferences },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067271707&doi=10.1051%2fe3sconf%2f20199813001&partnerID=40&md5=d60f7b376972bdf3dd7b4dfd570804ca },
}

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