(Table 2) Documented tree line shifts and site conditions for 10 sites studied in the Torneträsk area of sub-Arctic Sweden for the period 1912-2009

Independently obtained results from repeat photography, repeat transect measurements and dendrochronological analysis were cross-referenced to determine the shift of the lower boundary of the tree line ecotone. Browsing damage was classified visually and for five sites also by dendrochronological analysis.