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Moyrourkan Lough ASSI

Last updated: 5 February 2010

picture of Moyrourkan Lough ASSI

Site No ASSI 180
Area 25.09 (ha)
Declared Date 20/10/1998
Confirmed Date 20/05/1999
County Armagh
Council(s) Armagh C&DC
Keywords Fen, Invertebrate Assemblage

Moyrourkan Lough is a large wetland with a diverse range of communities ranging from open water to swamp and fen. Marginal grasslands and carr woodland provide additional habit diversity.
The open waters of the two small lakes support an extensive growth of floating broad-leaved pondweed, with localised yellow water-lily along the margins. A wide range of fen communities surround the lakes. The fen is dominated by bottle sedge and associated species are highly variable ranging from bogbean and water horsetail in the wetter pockets to sweet vernal-grass and Yorkshire-fog in drier areas.

Notable plants, include cowbane, greater tussock-sedge, narrow buckler-fern and the bryophytes Calliergon cordifolium, Sphagnum fimbriatum and Sphagnum squarrosum.

picture of the diving beetle Dystiscus circumcintus © Robert ThompsonMoyrourkan Lough also supports a notable invertebrate community, including a number of locally distributed species of aquatic Coleoptera (water beetles) such as Dytiscus circumcinctus. The community also contains a number of relict species (isolated remnant of a once-abundant species) indicative of undisturbed rich fens, generally restricted to east and central Ireland.

Site Related Documents

Site map (.PDF 912Kb)Opens in New window, Citation document (.PDF 140Kb)Opens in New window and Views about Management document (.PDF 70Kb)Opens in New window.