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

Deergrass (Trichophorum cespitosum)forms dense tufts on acidic bogs and wet heaths Mires Mires - are areas with high water table, often with peat formation. Water-loving plants dominate here. High humidity and reduced evaporation are responsible for mires of various types to be widespread all over Fennoscandia. Slow decomposition o f plant remnants under saturated condition and low temperature results in the accumulation o f partly decomposed material named peat. The formation o f peat on Fennoscandian mires started in postglacial times. Peal conserves plant and animal remains (named macrofossils) and has registered many significant events which have taken place in the area during this period. For example, evidence o f succession in plant cover after glacier retreat can be seen by looking at different layers in the peat going back over time. The thicker peat is, the less plants are influenced by mineral nutrient in ground water. Eutrophic and intermediately nutrient-rich (mesotrophic) mires are named fens, and Horsetail- and sedge-dominated mires and wetlands on the shoreline o fnumerous shallow small lakes 53