Application of a grazing model to predict heather moorland utilization and implications for nature conservation

Simpson, I.A., Kirkpatrick, A.H., Scott, L., Gill, J.P., Hanley, N. and MacDonald, A.J. (1998) Application of a grazing model to predict heather moorland utilization and implications for nature conservation. Journal of Environmental Management, 54(3), pp. 215-231. (doi: 10.1006/jema.1998.0211)

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Abstract

An audit of heather moorland utilization by sheep and an assessment of the implications for nature conservation is developed through the application of a grazing model to the Northern Isles of Scotland. Based on guideline maximum utilization limits, the results suggest a marked variation in utilization patterns, but that based upon sample grazing units some 15% of Orkney's heather moorland is overgrazed with a higher figure of 47% for Shetland. Interpolation of the sample data across the two archipelagos indicates a core-periphery pattern with grazing utilization most pronounced along moorland edges. Grazing utilization is observed to be less in areas with statutory conservation designation and on land owned by conservation charities. Incorporating appropriate heather burning programmes together with reduction in the area ofNardusand reductions in sheep stocking rates to between 0·48 and 0·98 ewes/hectare, it is suggested that conservation management will be required to maintain existing heather moorland.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hanley, Professor Nicholas
Authors: Simpson, I.A., Kirkpatrick, A.H., Scott, L., Gill, J.P., Hanley, N., and MacDonald, A.J.
College/School:College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine
Journal Name:Journal of Environmental Management
Publisher:Elsevier
ISSN:0301-4797
ISSN (Online):1095-8630

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