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Acidic rock outcrops, cliffs and scree

There are few examples of acidic outcrops and cliffs in the Yorkshire Dales National Park. They are mainly confined to exposures of shale and gritstone in parts of Sleddale, Swaledale, Arkengarthdale and Ribblesdale with small outcrops along watercourses near Grimwith Reservoir. They are generally poorly vegetated with dwarf shrubs, ferns and mosses able to grow well protected from grazing. Two species of fern, oak fern and beech fern, are extremely rare in the Dales. Acidic rock outcrops, cliffs and scree are of medium biodiversity value.

Habitat Statement

Conservation objectives

  • To determine the biodiversity value of acidic rock outcrops, cliffs and scree in the Yorkshire Dales National Park

  • Where sites are considered to be of biodiversity value ensure that appropriate conservation management is carried out.

Conservation measures

  • Using existing local knowledge determine the biodiversity value of acidic rock outcrops, cliifs and scree habitats.

  • Where important sites are identified encourage landowners and managers to carry out appropriate conservation management through advice and incentives.

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Yorkshire Dales National Park

Calcareous grassland habitat, © Whitfield Benson.
Curlew, © Whitfield Benson.
Frog orchid, © Whitfield Benson.
Heather moorland habitat, © YDNPA.
Juniper on Moughton, © Frances Graham.
Lapwing, © Whitfield Benson.
Limestone pavement habitat at Scar Close, © Whitfield Benson.
Otter, © Whitfield Benson.
Northern brown argus butterfly, © YDNPA.
Red squirrel, © Whitfield Benson.
Twite, © Whitfield Benson.
Upland lake habitat, © Whitfield Benson.
Garden tiger moth, © Whitfield Benson.

Other sources of information

The following publications are available from our online shop or by contacting the Hawes National Park Centre:

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