Dendrochronological Potential of Salix Alaxensis from the Kuujjua River Area, Western Canadian Arctic
AffiliationDepartment of Geography, University of British Columbia, Vancouver, B.C., V6T 1Z2 Canada
Laboratory for Paleoclimatology and Climatology, Department of Geography, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
Middle Arctic Vegetation
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CitationZalatan, R., Gajewski, K. 2006. Dendrochronological potential of Salix alaxensis from the Kuujjua River area, western Canadian Arctic. Tree-Ring Research 62(2):75-82.
AbstractThis study presents the first annually-resolved chronology using Salix alaxensis (Anderss.) Cov from Victoria Island, Northwest Territories, Canada, an area well north of treeline. Forty-one samples were collected and examined for subsequent analysis. However, crossdating was difficult because of locally absent or missing rings and the narrowness of the rings, and ultimately thirteen stems were crossdated and used to evaluate their dendroclimatological potential. The chronology spans 74 years (1927-2000) and could potentially be extended further using subfossil wood. Precipitation data from December of the previous year to March of the current year were the most consistently and highly correlated with ring width. This suggests that the recharge of the soil moisture by early summer snowmelt is a key factor limiting growth of these shrubs.