Included here are the Azores a group of nine volcanic islands situated in the North Atlantic. The three largest islands, São Miguel, Terceira and Pico represent about 69% of the total area of the archipelago.

Azorean Wetlands

Wetlands including areas of standing water are of great ecological importance in the Azores. Large oligotrophic lakes, mainly caldera lakes, are a major feature of the landscape and some of these are incredibly deep. Lagoa da Caldeira Negra (Flores), for example, has a depth of about 108 m. Small lagoons are also numerous and these often support bottom dwelling and marginal communities characterised by species such as Callitriche stagnalis, Cyperus alternifolius, C. longus, Eleocharis multicaulis, E. palustris, Juncus articulatus, Littorella uniflora and the endemic Isoetes azorica (Isoetaceae). In other wetland areas where permanent saturation occurs other wetland species like Galium palustre, Hydrocotyle vulgaris, Juncus effusus, Osmunda regalis, Rumex conglomeratus and the endemic Dryopteris azorica (Dryopteridaceae) and Lysimachia azorica (Myrsinaceae) may be encountered.


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