Greenan is a basin fen. A fen is a poorly drained wetland area with a permanently high water level at or just below the surface. The complex variety of habitats that can occur within a fen contributes to the rich diversity of plants and animals. Although small, Greenan has a range of vegetation types, including some notable fen communities and species.
The centre of the area is a mosaic of open water and swamp, with pockets of more diverse acid fen. The swamp is dominated by bottle sedge with frequent associated species including a number of floating moss mats.
To the north, there is an unusual fen community dominated by water horsetail and ragged Robin growing over a variable moss layer. This community is one of the most diverse in the area. Notable plants include greater bladderwort, floating club-rush, marsh St. Johns-wort and the moss Sphagnum squarrosum.
- ASSI Guidance for Public Bodies/Competent Authorities
- Coastal Areas of Special Scientific Interest
- Conservation Management Plans for Northern Ireland’s Special Areas of Conservation
- European Marine Sites - Marine Special Areas of Conservation and Special Protection Areas
- Management of Special Areas of Conservation (SAC)
- Marine Conservation Zones
- Marine Protected Areas
- Marine Ramsar sites
- Portrush Coastal Zone
- Special Areas of Conservation
- Special Areas of Conservation for Harbour porpoise
- Special Protection Areas