Environmental data
All data (table 1) was downloaded in raster format and data for each
location of the IUFRO population was extracted using the Point Sampling
Tool in qGIS (Jurgiel, 2020; QGIS.org, 2022). Climatic data was
downloaded from worldclim.org (Fick & Hijmans, 2017). This data
consisted of readings from 1970-2000 with a raster resolution of
1km2. Annual snow cover data was obtained from the
Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra
satellite for the years 2000-2020 (Hall et al., 2006). Soil data were
obtained from the Unified North America Soil Map which is a combination
of soil mapping from Canada and global soil maps (Liu et al., 2014).
Topographical maps were obtained from United States Geological Survey
(USGS) eros (EROS, 2010). Forest fire risk maps were obtained from
Genonode CSIRO (GFDRR, 2022). Data for each location of the IUFRO
population is made available as a supplemental table (Supplementary
table 1)