|Location||Finland, Länsi-Suomen lääni|
|Central coordinates||21o 30.00' East 59o 48.00' North|
|IBA criteria||A4i, A4iii, B1i, B1ii, B2, B3, C3, C4|
|Year of IBA assessment||2000|
Ornithological information An exceptionally important breeding area for archipelagic avifauna, with total numbers exceeding 20,000 pairs. Also nationally important as a staging area for waterbirds.
Site description A very large area of outer archipelago inside the Saaristomeri National Park: the site's boundaries have been drawn to include the most ornithologically important parts of the park. Large areas of open water dominate the landscape, although the numerous islands are also impressive. Most of the islands are small, stony and treeless with steep shores. Jurmo, the largest, is ornithologically the most diverse and important, supporting long stony or sandy ridges and large, open areas of treeless heath. Boating and other human activities are much scarcer than within the inner archipelago.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Common Eider Somateria mollissima||breeding||1995||11,500 breeding pairs||good||A4i, B1i, C3||Least Concern|
|Great Black-backed Gull Larus marinus||breeding||1995||170-190 breeding pairs||good||B3||Least Concern|
|Razorbill Alca torda||breeding||1995||200-220 breeding pairs||good||B1ii, C3||Least Concern|
|Black Guillemot Cepphus grylle||breeding||1995||130-150 breeding pairs||good||B1ii, B2||Least Concern|
|A4iii Species group - waterbirds||breeding||1995||-||unknown||A4iii, C4|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Archipelago Sea Area||UNESCO-MAB Biosphere Reserve||4,200,000||protected area contains site||73,500|
|Saaristomeren kansallispuisto||National Park||49,988||protected area contains site||73,500|
|Saaristomeri - FI0200090||Habitats Directive||49,735||protected area overlaps with site||21,921|
|Saaristomeri - FI0200164||Birds Directive||59,842||protected area overlaps with site||31,945|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Land-use||Extent (% of site)|
Management considerations There are no major threats. For many years a bird observatory has been maintained at Jurmo. Part of the area is a candidate SAC.
Protection status National High International High73,500 ha of IBA covered by National Park (Saaristomeri, 311,000 ha). 13,601 ha of IBA covered by two Special Protection Areas (Saaristomeri; Jurmo). 73,500 ha of IBA covered by Biosphere Reserve (Saaristomeri, 420,000 ha).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Korppoo and Nauvo southern archipelago. Downloaded from http://www.birdlife.org on 24/05/2013
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