Vegetation Dynamics of Marshes in Tidal Estuaries of the Wait Sea and the Cheshskaya Bay of the Barents Sea

The article studies the dynamics of overgrowth of saline marches of tidal estuaries of the Whit. Changes in the coastal vegetation depend on the salinity of the water and soil, the magnitude of the tides and the degree of flooding of the coastal strip, the relief and the mechanical composition of the coastal soils. Given the environmental series of overgrowing marches under conditions differing in the magnitude of the tides at the estuary of rivers. It is shown that the halophytic vegetation and its communities occupy the largest areas in the macrotidal conditions of the estuaries of the Chizha and Chesha rivers of the Kanin Peninsula, where marching coast reach 10–20 km from the coastline of the sea at the mouths of rivers. The dynamics of coastal communities depending on water salinity is studied. Communities dominated by obligate halophytes tend to strongly saline ecotopes of marches located on the maritime boundary of estuaries filled with water salinity of more than 20‰, in the zone of constant salinization of estuaries, communities of facultative halophytes and tolerant species more often occupy medium and slightly saline marches in the tops of estuaries.