Figure 1. (a) Study areas (n = 26 locations) located in the alpine and
arctic regions of Fennoscandia in northern Europe where small rodents
have been snap-trapped in fall ≥ 10 consecutive years. Locations denoted
with * are exceptions (trapping conducted only in spring or/and summer
or with gaps in the respective time-series; see details in Table 1). (b)
Community contribution of rodent genera within each location: the
grey-sided vole (Myodes rufocanus; blue bars); Norwegian lemming
(Lemmus lemmus ; grey bars); field vole (Microtus agrestis )
and tundra vole (Microtus oeconomu s) (the last two combined asMicrotus -species; orange bars); and other species (green bars)
encompassing the bank vole (Myodes glareolus ), red-backed
vole (Myodes rutilus ) and wood lemming (Myopus
schisticolor ).