Atlantic saltmarsh or brackish marsh communities dominated by Eleocharis uniglumis or Eleocharis palustris, associated with Agrostis stolonifera or Carex paleacea. They constitute a common upper shore community in Scotland; they are also very prevalent on the lower levels of the brackish marshes of the Baltic, east and north of southeastern Sweden and Estonia; in western Scandinavia they are restricted to estuaries and fjord heads. They occur on saline littorals in Iceland.