The site is a lowland heathland on sandy moraine co-dominated by the shrub Calluna vulgaris and the grass Deschampsia flexuosa.
It is 57 m a.s.l. and 3 km from the sea. Precipitation at the site is 550 mm (30 yr mean), annual temperature is 7.7 °C (30 yr. mean) (average January 1.7 °C, average July 17.5 °C).
Nitrogen deposition is in the low end of the range within the INCREASE network with c. 13 kg N/ha/yr (3 yr mean in wet deposition).
The Mols infrastructure consists of 9 plots each 20 m2 including 3 plots with a temperature rise, 3 plots where drought is created and 3 untreated control plots:
Temperature: Night-time warming mimics global change. Passive night time warming takes place during the night by covering the ecosystem at night by IR-reflective alu-curtains controlled by a light sensor. Spring-Summer drought: Extended drought is applied 2-3 months during early summer. Plastic curtains cover the plots during rain events. A rain sensor controls the curtains.
Control: Untreated plots for reference measurements.