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dc.contributor.authorLambert, Jean-Bastien
dc.contributor.authorAméztegui González, Aitor
dc.contributor.authorDelagrange, Sylvain
dc.contributor.authorMessier, Christian
dc.date.accessioned2018-11-06T11:57:39Z
dc.date.available2018-11-06T11:57:39Z
dc.date.issued2016
dc.identifier.issn0045-5067
dc.identifier.urihttp://hdl.handle.net/10459.1/65034
dc.description.abstractSmall-seeded tree species such as yellow birch (YB, Betula alleghaniensis Britt.) require deadwood or mineral soil for their establishment. Although much research has been done comparing YB germination on leaf litter vs. exposed mineral soil, less is known about deadwood as a seedbed and how different seedbeds affect YB early growth along light availability and size gradients. We examine how three common seedbeds (deadwood, moss cover on deadwood, and mineral soil) affected establishment and growth, biomass partitioning, and morphological traits of YB juveniles growing in the understory of temperate mixed deciduous and coniferous forests in southern Quebec. A total of 274 YB were sampled in four sugar maple (Acer saccharum Marsh.) dominated northern hardwood stands where selective cuts had been applied 6 and 15 years prior to sampling. Over 75% of the YB found on deadwood were on material of birch and conifer origin, although these species made less than 40% of the basal area. YB juveniles growing on deadwood showed traits that improve survival in shade such as reduced height growth for tall plants, higher efficiency in resource capture, and multilayered crowns. Our results demonstrate the importance of deadwood of birch and conifer origin in maintaining an abundant, natural, spatially well-distributed, and multistoried regeneration of YB.
dc.description.sponsorshipThe authors are particularly grateful to I. Pratte, D. Schönig, A. Paquin, N. Bergeron, M. Messier, E. Messier, S. Carpentier, Y. Gauthier, and E. Mauri for their valuable help with the field and lab work. They also thank M. Mazerolle and S. Daigle for their assistance with statistical models. This work was funded by a MVRMF grant from the Ministry of Natural Resources of Quebec (MRNQ). J.-B. Lambert was also awarded with a Fonds de recherche du Québec — Nature et technologies (FRQNT) scholarship.
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherNRC Research Press
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1139/cjfr-2015-0315
dc.relation.ispartofCanadian Journal Of Forest Research-Revue Canadienne de Recherche Forestiere, 2016, vol. 46, p. 114-121
dc.rights(c) NRC Research Press, 2015
dc.subjectBetula alleghaniensis
dc.subjectSeedbed
dc.subjectDeadwood
dc.subjectBiomass partitioning
dc.titleBirch and conifer deadwood favour early establishment and shade tolerance in yellow birch juveniles growing on sugar maple dominated stands
dc.typeinfo:eu-repo/semantics/article
dc.date.updated2018-11-06T11:57:40Z
dc.identifier.idgrec026619
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doihttps://doi.org/10.1139/cjfr-2015-0315


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