BoivinBuffin-BelangerArseneault2018

Référence

Boivin, M., Buffin-Bélanger, T. and Arseneault, D. (2018) Using tree-rings to determine large wood residence time and transport pulses in a gravel-bed river. In E3S Web of Conferences. (Scopus )

Résumé

The Saint-Jean River (SRJ) in Eastern Canada is prone to the formation of very large rafts of wood. Managers of the SJR suspected these jams to influence salmon migration and carried out a dismantling operation to remove large wood accumulated in a 1.2 km long wood raft. This operation became a great opportunity to address key issues relating to large wood dynamics in a fluvial system: residence time and flood contribution to wood recruitment and transport. During the dismantling, we systematically sampled 319 trees from which year of death could be estimated from dendrochronology and year of accumulation in the raft could be obtained from satellite and aerial photos. These two dates allowed us to quantify the residence time for 262 datable large wood (LW) within the fluvial system, to examine the peak years of LW recruitment and to correlate the raft growth rate with hydrometeorological conditions since 1993. The results also emphasized four types of LW flood related to wood dynamics: 1) an erosive flood that produces a large amount of wood in river, 2) a mobilizing flood that carries large quantities of wood, 3) a flood mix that both recruits and transports large quantities of wood, and 4) an ice-breakup flood. © The Authors, published by EDP Sciences, 2018.

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@INPROCEEDINGS { BoivinBuffin-BelangerArseneault2018,
    AUTHOR = { Boivin, M. and Buffin-Bélanger, T. and Arseneault, D. },
    TITLE = { Using tree-rings to determine large wood residence time and transport pulses in a gravel-bed river },
    YEAR = { 2018 },
    VOLUME = { 40 },
    NOTE = { cited By 0 },
    ABSTRACT = { The Saint-Jean River (SRJ) in Eastern Canada is prone to the formation of very large rafts of wood. Managers of the SJR suspected these jams to influence salmon migration and carried out a dismantling operation to remove large wood accumulated in a 1.2 km long wood raft. This operation became a great opportunity to address key issues relating to large wood dynamics in a fluvial system: residence time and flood contribution to wood recruitment and transport. During the dismantling, we systematically sampled 319 trees from which year of death could be estimated from dendrochronology and year of accumulation in the raft could be obtained from satellite and aerial photos. These two dates allowed us to quantify the residence time for 262 datable large wood (LW) within the fluvial system, to examine the peak years of LW recruitment and to correlate the raft growth rate with hydrometeorological conditions since 1993. The results also emphasized four types of LW flood related to wood dynamics: 1) an erosive flood that produces a large amount of wood in river, 2) a mobilizing flood that carries large quantities of wood, 3) a flood mix that both recruits and transports large quantities of wood, and 4) an ice-breakup flood. © The Authors, published by EDP Sciences, 2018. },
    AFFILIATION = { Département des Sciences Humaines et Sociales, Université du Québec À Chicoutimi, 555 boulevard de l'Université, Chicoutimi, QC G7H 2B1, Canada; Département de Biologie, Chimie et Géographie, Université du Québec À Rimouski, 300 Allée des Ursulines, Rimouski, QC G5L 3A1, Canada; Centre d'Étude Nordique, Université Laval et Université du Québec À Rimouski, Canada },
    ART_NUMBER = { 02008 },
    DOCUMENT_TYPE = { Conference Paper },
    DOI = { 10.1051/e3sconf/20184002008 },
    JOURNAL = { E3S Web of Conferences },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85053750478&doi=10.1051%2fe3sconf%2f20184002008&partnerID=40&md5=8cb1595029a17280aa19eed7aadc8f38 },
}

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