Archipelago of Stockholm

Year of compilation: 2000

Site description
The main area of interest can be divided into four island groups: Stora Nassa˜c.400 closely spaced rocky islets with little or no vegetation. The largest island has maritime Betula forest whilst others support Juniperus. Wet grasslands are also present. Lilla Nassa˜smaller area than Stora Nassa but with islands more spread out and with very little vegetation. Gillöga˜flat islands in shallow waters with abundant cover and submerged offshore reefs. Svenska Högarna˜a flat island with Juniperus, and heather Calluna. The archipelago is largely uninhabited but during the summer is a popular leisure (boating) area.

Key biodiversity
This is a very important breeding area for seaducks, waders, gulls and seabirds.

Pressure/threats to key biodiversity
American mink Mustela vison are a threat to breeding birds. Recreational activities may disturb breeding birds.

Protected areas
National Partial International HighIBA overlaps with Nature Reserve (3,400 ha); large areas are also designated as Bird Sanctuaries. 9,100 ha of IBA covered by Ramsar Site (Stockholm, outer archipelago, 15,000 ha). IBA overlaps with Special Protection Area.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Archipelago of Stockholm. Downloaded from on 08/08/2022.