This type includes vegetation that is ground water fed; and permanently, seasonally or periodically waterlogged peat, peaty or mineral soils where grasses do not predominate. It also includes emergent vegetation or frequently inundated vegetation occurring over peat or mineral soils. This type includes neither areas of carr that are greater than 0.25ha which should be included in the "Broadleaved, mixed and yew woodland"
broad habitat type nor include wet grassland (with the exception of purple moor grass, reed, or sweet-grass dominated vegetation) which should be included in the "Neutral grassland" broad habitat type.
Originally published in: UK Biodiversity Group Tranche 2 Action Plans - Volume II: Terrestrial and freshwater habitats (December 1998, Tranche 2, Vol II, p16)