When undertaking an appropriate assessment of impacts at a site, all features of European importance (both primary and non-primary) need to be considered.
Annex I habitats that are a primary reason for selection of this site
|7140 Transition mires and quaking bogs|
Crowdy Marsh is one of several valley mires found around the edge of the granite massif of Bodmin Moor. Most of the gently-sloping wide valley is now occupied by a freshwater reservoir, but feeder streams still meander via a network of water tracks between low peaty mounds over the remainder. The H7140 Transition mire includes the water tracks and occasional waterlogged hollows found throughout Crowdy Marsh.
The deep hollows are dominated by the bog-moss Sphagnum [auriculatum] with a mix of typical transition mire species such as marsh cinquefoil Potentilla palustris and bogbean Menyanthes trifoliata. Marsh St Johnís-wort Hypericum elodes and bog pondweed Potamogeton polygonifolius are common in the water tracks, often fringed by the rushes Juncus effusus and Juncus bulbosus. Pale butterwort Pinguicula lusitanica is widely distributed along the margins of the fen.
Annex I habitats present as a qualifying feature, but not a primary reason for selection of this site
Annex II species that are a primary reason for selection of this site
Annex II species present as a qualifying feature, but not a primary reason for site selection
Many designated sites are on private land: the listing of a site in these pages does not imply any right of public access.