Fig. 3

Prevalence of ticks on bank voles along an altitudinal gradient in Lifjell 2017 (a), Lærdal 2017 (b), Lifjell 2018 (c) and Lærdal 2018 (d). A prevalence of 1.0 represents a certainty of encountering at least one tick. Solid lines denote seasons: spring (green), summer (blue), autumn (red). Shaded areas around each coloured line represent the standard error 95 % confidence intervals. For I. trianguliceps the spring and summer curves are closely overlapping