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hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
hal.structure.identifierUniversité Laval [Québec] [ULaval]
dc.contributor.authorDE LAFONTAINE, Guillaume
hal.structure.identifierUniversité Laval [Québec] [ULaval]
dc.contributor.authorPAYETTE, Serge
dc.date.accessioned2022-10-12T12:51:12Z
dc.date.available2022-10-12T12:51:12Z
dc.date.issued2012
dc.identifier.issn0959-6836
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/157337
dc.description.abstractEnThe northernmost balsam fir forest in eastern Canada forms disjunct stands far beyond the extensive balsam fir forest zone of southern Canada. The northern balsam fir stands are distributed in the subalpine belt of high plateaus and coexist locally with white spruce stands. These subalpine stands contrast greatly with black spruce forest stands located in lowlands. Given that subalpine stands are remnants of an earlier northern expansion of the balsam fir forest, the main objective of this study is to assess whether white spruce stands are distinct communities having diverged from the balsam fir forest community earlier in the Holocene or if they rather correspond to a different stage of the chronosequence within the subalpine belt. Macrofossil analysis of charcoal in mineral soils was used to compare the stand-scale fire histories and taxonomic fossil composition of subalpine, old-growth balsam fir stands and white spruce stands. No significant differences of mean number of observed fires (mean = 6.35 fires per site), Holocene fire recurrence at the landscape scale and mean fire-return interval (mean = 580 years) were found between white spruce stands and balsam fir stands. The botanical composition of charcoal fragments from mineral soils showed that Abies, Betula and Picea were present throughout the fire period from 5600 cal. BP to present, and no difference was found in the fossil composition of the balsam fir and white spruce stands. No historical change in the botanical composition of charcoal from soils of both stand types was observed indicating that the initial floristic composition remained through the period of recurrent fires. Charcoal data suggest that white spruce stands are not divergent community types. Rather, the two community types are arranged along a chronosequence of different successional stages within the subalpine relict flora.
dc.language.isoen
dc.publisherLondon: Sage
dc.subjectmineral soil charcoal
dc.subjectPicea glauca
dc.subjectDYNAMICS
dc.subjectTUNDRA
dc.subject.en(14)C AMS dating
dc.subject.enAbies balsamea
dc.subject.enboreal forest
dc.subject.encharcoal analysis
dc.subject.eneastern North America
dc.subject.enecological succession
dc.subject.enmacrofossil analysis
dc.subject.enTEMPERATE RAIN-FOREST
dc.subject.enBOREAL FOREST
dc.subject.enNORTHERN QUEBEC
dc.subject.enCLIMATE-CHANGE
dc.subject.enMOSS FOREST
dc.subject.enHUDSON-BAY
dc.subject.enGROWTH
dc.subject.enWOOD
dc.title.enLong-term fire and forest history of subalpine balsam fir (Abies balsamea) and white spruce (Picea glauca) stands in eastern Canada inferred from soil charcoal analysis
dc.typeArticle de revue
dc.identifier.doi10.1177/0959683611414931
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalThe Holocene
bordeaux.page191 - 201
bordeaux.volume22
bordeaux.hal.laboratoriesBioGeCo (Biodiversité Gènes & Communautés) - UMR 1202*
bordeaux.issue2
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02651878
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02651878v1
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