Kilsviken is a nutrient-rich bay off Lake Vänern and is surrounded by agricultural land. The shoreline is largely made up of reedbeds (Phragmites) and water-meadows and there is rich aquatic vegetation. Associated with Kilsviken is Kolstrandsviken Bay, which is moderately-rich in nutrients and contains mudflats, and åråsviken Bay. The northern part of åråsviken supports extensive areas of Phragmites, and grazing-meadows and damp forests occur on the many islands.
The IBA is important for breeding waterbirds and raptors, and as a stop-over site for migrating waders. Wintering species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (4-8 birds).
Pressure/threats to key biodiversity
American mink Mustela vison are a threat to breeding birds. Canoeing and other recreational activities may endanger important breeding areas. The bays' sediments still contain mercury (Hg) from a former paper factory (`Other' threat).
National Partial International HighIBA overlaps with Bird Sanctuary (Dyro-Mallskars Skar). IBA overlaps with Nature Reserve (Inner Kilsviken, 132 ha). IBA overlaps with Nature Reserve (Noton-Arasviken). IBA overlaps with Nature Reserve (Vallholmen, 107 ha). 8,910 ha of IBA covered by Ramsar Site (Kilsviken, 8,910 ha). IBA overlaps with three Special Protection Areas (totalling 2,554 ha).
BirdLife International (2023) Important Bird Areas factsheet: Bay of Kil. Downloaded from
http://www.birdlife.org on 01/04/2023.