Correlation (Spearman rank, rs) between the amount of protected habitat and overall habitat suitability index of species groups in a given square.

The overall habitat suitability index was based on the mean of species-specific habitat suitability indices, which is the probability of species occurrence in 2051–2080 multiplied by the amount of habitat preferred by species in each square. The amount of habitat in this calculation was scaled in each square by dividing it by the largest amount of the given habitat in each zone. The probability of species occurrence was based on three different climate scenarios: B1 (CSIRO), ensemble mean of 19 GCM based on A1B (19GCM) and A2 (MIROC3). Squares in which the given habitat was absent were excluded from the correlation analyses. The number of squares included in each species group, in southern, middle and northern boreal zones, respectively: in species of forests 1539, 1164, and 1071, in species of mires 1509, 1159, and 1069, and in species of marshlands 1313, 989, and 636. The number of squares included in Arctic mountain heaths was 686 and in Arctic mountain birch woods 452. The number of species in each species group in parentheses.