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Coastal lagoons (Natura 2000 code 1150)

by Johnny Reker

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Chara meadow at Bärskär, Finland by Metsähallitus
Chara sp. by Metsähallitus
Zostera marina in shallow waters by Peter Bondo Christensen

Description: The "Interpretation Manual of European Union Habitats", Oct. 1999 defines Coastal lagoons as: "Lagoons are expanses of shallow coastal salt water, of varying salinity and water volume, wholly or partially separated from the sea by sand banks or shingle, or less frequently, by rocks. Salinity may vary from brackish water to hypersalinity depending on rainfall, evaporation and through the addition of fresh seawater from storms, temporary flooding of the sea in the winter or tidal exchange. With or without vegetation from Ruppietea maritemae, Potametea, Zosteretea or Charetea (CORINE 91:23.21 or 23.22).
- Flads and gloes, considered a Baltic variety of lagoons, are small, usually shallow, more or less delimited water bodies still connected to the sea or have been cut off from the sea very recently by land upheaval. Characterised by well developed reedbeds and luxuriant submerged vegetation and having several morphological and botanical developments stages in the process whereby sea becomes land.
- Salt basins and salt ponds may also be considered as lagoons, providing they had their origin on a transformed natural old lagoon or on a salt marsh, and are characterised by minor impact from exploitation."
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