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In the Alpine region, ground-dwelling lichens form extensive mats and impact at a landscape scale, as seen here in Forrolhogna National Park, Norway, at approximately 1100 m a.s.l. and 90 km northeast of the study site used by Mallen-Cooper et al. (2021). The white-yellowish colours indicate where Cladonia spp. and Flavocetraria nivalis dominate the vegetation. Photo: Ruben Erik Roos.
