Tarn Moss National Nature Reserve

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Overview
Tarn Moss NNR is a basin mire just off the A66 south of its junction with the A5091 which supports a range of fen communities. In comparison with other Cumbrian basin mires, Tarn Moss is remarkable in being almost undisturbed and entirely devoid of tree or scrub cover, with no obvious signs of past peat cutting. The mire communities are of special interest, comprising areas of typical acid mire within a matrix of nutrient-poor fen, the latter being unusual in true basin mires. The fen is the most extensive and best-developed community at Tarn Moss, and is characterised by the dominance of sphagnum bog-mosses and various sedges. Other plant species include marsh pennywort, marsh cinquefoil, water horsetail, marsh violet, common marsh-bedstraw, lesser spearwort, bog asphodel and cranberry. Small areas of more acid vegetation occur throughout the reserve and in places merge to form larger patches of acid mire, dominated by heather and cross-leaved heath, bog-rosemary and crowberry.
About the area
North Yorkshire, with its two National Parks and two designated Areas of Outstanding Natural Beauty, is England’s largest county and one of the most rural. This is prime walking country, from the heather-clad heights of the North York Moors to the limestone country that is so typical of the Yorkshire Dales – a place of contrasts and discoveries, of history and legend.
Area image

Tarn Moss National Nature Reserve

Recommended by Visit England Logo
Overview
Tarn Moss NNR is a basin mire just off the A66 south of its junction with the A5091 which supports a range of fen communities. In comparison with other Cumbrian basin mires, Tarn Moss is remarkable in being almost undisturbed and entirely devoid of tree or scrub cover, with no obvious signs of past peat cutting. The mire communities are of special interest, comprising areas of typical acid mire within a matrix of nutrient-poor fen, the latter being unusual in true basin mires. The fen is the most extensive and best-developed community at Tarn Moss, and is characterised by the dominance of sphagnum bog-mosses and various sedges. Other plant species include marsh pennywort, marsh cinquefoil, water horsetail, marsh violet, common marsh-bedstraw, lesser spearwort, bog asphodel and cranberry. Small areas of more acid vegetation occur throughout the reserve and in places merge to form larger patches of acid mire, dominated by heather and cross-leaved heath, bog-rosemary and crowberry.
About the area
Area image
North Yorkshire, with its two National Parks and two designated Areas of Outstanding Natural Beauty, is England’s largest county and one of the most rural. This is prime walking country, from the heather-clad heights of the North York Moors to the limestone country that is so typical of the Yorkshire Dales – a place of contrasts and discoveries, of history and legend.