The Untersee is a large shallow lake situated on the course of the River Rhine, adjacent to Swiss IBA 014. Habitat-types include riverine forest, Alnus swamp-forest, dry grassland, wet meadows, lightly improved grassland, shallow water zones, reed- Phragmites and sedge-beds, mudflats and gravel-banks.
This is an important stop-over site for passage wildfowl. Species of global conservation concern that do not meet IBA criteria: Aythya nyroca (breeding).
National High International HighIBA overlaps with Landscape Protected Area and Nature Reserve. IBA overlaps with Ramsar Site and Special Protection Area.
BirdLife International (2020) Important Bird Areas factsheet: Untersee of Lake Constance. Downloaded from
http://www.birdlife.org on 29/10/2020.