Growth form and leaf habit drive contrasting effects of Arctic amplification in long-lived woody species

Raw_and_STD_Chronologies.txt contains the raw (suffix "_raw") and indexed (suffix "_std") ring-width chronology derived from seven species (Juniperus communis L., Betula nana L., Salix lanata L., Picea abies L., Pinus contorta Douglas, Betula pubescens Ehrh., and Sorbus aucuparia L.) collected from ten sites located across Iceland. In the file, each column addresses the chronology belonging to a precise site and species, coded following the one used in the International Tree-Ring Data Bank (ITRDB) as listed in Grissino_Mayer (1993). This data was used to model growth trends and to perform climate-growth associations over the 1967-2018 period.