Drought in Swiss grasslands at different altitudes: Effects on productivity and resource use

Site: Alp Weissenstein (CH-AWS, Crap Alv, canton Grisons, Switzerland) is located on the western side of the Albula pass in the Swiss Alps. It is is part of the ETH research stations. Longitude (WGS 84): 9°47'25.5" Latitude (WGS 84): 46°34'59.5" Altitude (m.a.s.l): 1978 Land cover (IGBP land classification): Grassland Soil type: Slightly humous to humous sandy loam (Schärer 2003) Geology: Morainic material from the Val Bever glacier (Caflisch 1954) and limestone debris (Bearth et al. 1987) from the steep valley slopes that superpose the glacial formation.