|Location||Finland, Uudenmaan lääni|
|Central coordinates||24o 43.30' East 60o 9.14' North|
|IBA criteria||B2, C6|
|Altitude||1 - 3m|
|Year of IBA assessment||2009|
Summary Core area of the site is pool with standing freshwater, which acts as reservoir of sewage plant. Site is nationally best breeding area for two species: Gallinula chloropus and Anas strepera, and one of the best for Podiceps auritus and Larus ridibundus.
Site description Suomenoja has been earlier a bay of sea with river estuary. The bay was separated from the sea and river by dams in 1960’es. Core area of the site is now pool with standing freshwater, which acts as reservoir of sewage plant. The pool gets temporarily water influxes from communal sewage and very rarely from the sea (when water level of the sea rises very high). Next to the pool are pasture and reedbed flooded regularly by sea. SIte includes also few hectares of ruderal land and alluvial forests.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Gadwall Mareca strepera||breeding||2004-2007||14-25 breeding pairs||good||B2||Least Concern|
|Horned Grebe Podiceps auritus||breeding||2005-2007||16-18 breeding pairs||good||B2, C6||Least Concern|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Wetlands (inland)||Rivers and streams; Standing freshwater; Water fringe vegetation||70%|
|Artificial - terrestrial||Ruderal land||10%|
|Forest||Alluvial and very wet forest; Mixed woodland||20%|
Land ownership Municipality of Espoo and Fortum (powerplant owner next to the site).
|Land-use||Extent (% of site)|
References Lammi, E. & Routasuo, P. 2001: Monitoring the bird wetlands of Espoo municipality in 2000. – Environment Council of Espoo municipality, publication 1/2001 (in Finnish, 65 pages) Leivo, M., Asanti, T., Koskimies, P., Lammi, E., Lampolahti, J., Mikkola-Roos, M. & Virolainen, E. 2002: Finnish important bird areas – FINIBA. – BirdLife Finland’s conservation publication nr 4 (in Finnish, 142 pages). Rassi, P., Alanen, A., Kanerva, T. & Mannerkoksi, I. (editors) 2001: The 2000 Red List of Finnish Species. – Ministry of Environment and Finnish Environment Research Center. (in Finnish, 432 pages). Rusanen, Pekka 2005: Statement of values of the Suomenoja. – Annex in the complaint made on the plan of harbour, next to the FINIBA-site Suomenoja.
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Recommended citation BirdLife International (2014) Important Bird Areas factsheet: Suomenoja. Downloaded from http://www.birdlife.org on 24/09/2014
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