Borovichev E.A. Botanical excursion on the Northern Soroya. Hammerfest, 2014.

Arctic and subarctic ecosystems are changing catastrophically because o f road and pipeline construction. Pioneer, fast-growing lichens settle on the open soil and quickly colonize large territories, but rare species often disappear from the disturbed areas. Lichens growing along roadsides Baeomycesplacophyllus usuallygrows on deflated soil in the tundra andquickly colonizes roadsides Stereocaulon alpinumforms extensive mats along roadsides Stereocaulon glareosum is apioneer species differingfrom the other Stereocaulon species by large, up to 5 mm, cephalodia (beige lumps) with a blue-green algae (Nostoc spp.) 102