zda, V. rheitrophyla Zsch., V. maura Wahlenb. in Ach., and V. hydrela Ach.) and water foliose lichen Collema ramenskii Elenk. were studied in the stony littoral of
the western coast of Lake Baikal in 2002–2006. Their densities were highest at depths of 1.5 to 2 m; 95–100% of
rock fragments collected from the depths of 1.5–2.2 m were covered by plentiful crustose thalli of Verrucaria spp.
Lichens make a large contribute to the destruction of the stony ground in the shallow-water zone. Unlike water,
foliose and crustose lichens concentrate Ti, La, Ce, Y, Mn, and Th. Thalli of Collema ramenskii differ from Ver-
rucaria species in their ability to accumulate Zn, Co, and Ni. Compared to the bottom sediments, all the studied
water lichen species concentrate Zn, while Collema ramenskii concentrate Zn and Mo.