The plant communities with Arenaria pseudofrigida are common on the cobble-loam grounds on the edges of marine terraces on the Vaigach, Dolgiy and few smaller islands in the south-eastern part of the Barents Sea. These communities influenced by sea salty spray are described within 4 new synataxa (2 associations and 2 subassociations). They are provisionally placed within the alliance Arenarion norvegicae Nordh. 1935. order Thlaspietalia rotundifolii Br.-Bl. in Br.-Bl. et Jenny 1926, class Thlaspietea rotundifolii Br.-Bl. 1948.