Allt a'Mharcaidh - United Kingdom

UK ECN site. Allt a'Mharcaidh is a stream site on the western flank of the Cairngorm Mountains. The catchment area is 998ha and it drains to the River Feshie, a tributary of the River Spey. The catchment rises from 325m at the sampling site to 1111m and is covered by alpine and peaty podsols (60%) and blanket peat (40%). The underlying geology is intrusive biotite-granite of the Lower Old Red Sandstone age. Vegetation is characterised by a heather/fescue grass mixture (90%) with native pinewoods (c. 2%) interspersed along the lowest reaches. The catchment comprises part of the Cairngorm National Nature Reserve and land-use is confined to deer grazing. The stream gradient is steep and exposed bedrock, rapids and waterfalls and ...