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

<strong>Raw_and_STD_Chronologies.txt</strong> contains the raw (suffix "_raw") and indexed (suffix "_std") ring-width chronology derived from seven species (<em>Juniperus communis</em> L., <em>Betula nana</em> L., <em>Salix lanata</em> L., <em>Picea abies</em> L., <em>Pinus contorta</em> Douglas, <em>Betula pubescens</em> Ehrh., and <em>Sorbus aucuparia</em> 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.