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TitleInfluence des variations interannuelles du climat sur la croissance radiale des épinettes noires
DownloadDownload (whole publication)
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorNicault, A; Boucher, É; Tapsoba, D; Bégin, Y
SourceUtilisation des archives naturelles pour la reconstitution du passé hydro-climatique; by Bégin, C; Nicault, A; Bégin, Y; Geological Survey of Canada, Open File 8768, 2021 p. 88-96, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Utilisation des archives naturelles pour la reconstitution du passé hydro-climatique
File formatpdf
ProvinceQuebec; Newfoundland and Labrador
NTS13; 22; 23; 24; 33; 34
AreaComplexe La Grande; Labrador; Réservoir Manicouagan; Lake Melville
Lat/Long WENS -80.0000 -56.0000 59.0000 50.0000
Subjectsenvironmental geology; Nature and Environment; Science and Technology; climatology; paleoclimatology; dendrochronology; paleoenvironment; temperature; statistical analyses; sampling techniques; Le projet ARCHIVES; Picea Mariana; Climate change; Boreal ecosystems; Forests; Trees; Biology; Environmental indicators; Geographic data; Phanerozoic; Cenozoic; Quaternary
Illustrationslocation maps; time series; schematic representations; plots; bar graphs; sketch maps
ProgramClimate Change Geoscience Extreme Events
Released2021 06 28
AbstractThis study aims at analyzing the relationships between the black spruce (Picea mariana Mill. BSP) radial growth response to climate over a wide territory on the northern Quebec-Labrador peninsula's boreal forest. Firstly, a hierarchical cluster analysis was conducted to detect the affinities among 93 black spruce tree-ring width series. Secondly, linear multiple regression analysis, associated with a bootstrap technique, was used to calculate response functions of the tree-ring series. As a result, spatial affinities among tree-ring series highlight a geographical pattern that can be related to the spatial variability of the tree-ring - climate relationships. Inter-annual growth variations are governed mainly by temperature variables of the preceding growing season: November temperatures have a negative influence, while April has a positive one for among the westernmost trees, as do December-January for the southernmost trees. Growing season temperatures (mainly July temperatures) influence only the northernmost and easternmost populations. The response was spatially interpolated using a kriging technique with an external drift.

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