Seasonal and Spatial patterns in sheep grazing on a high‐level plateau in the Grampian Mountains, Scotland

Abstract

Sheep usage of part of the summit of Glas Maol was monitored by pellet‐group counts to determine impact on Carex bigelowii‐Racomitrium lanuginosum moss heath. The effects of a fenced skiing corridor in giving shelter and disrupting ranging movements were assessed. Dung deposition was appreciable only from June to September each year, and heaviest in July and August; occupance seemed to depend on the presence of substantial quantities of green herbage. Dung deposition was much greater within 5 m of the fence, probably because of its sheltering effect. The estimated May‐October stocking of 1.1 sheep ha^‐1 on the main plateau is surprisingly heavy for the altitude, whereas usage by red deer was negligible.

Key words:

• sheep
• grazing
• behaviour
• mountains
• shelter