Since 1998 IBED is involved in the European research project (INCREASE). In 8 European countries we study the effect of moderate climate change -passive night-time warming (increased mean annual temperature of 1.0 ˚C) and repeated growing season droughts (decreased mean annual precipitation of 20% of ambient rainfall) in low vegetations. In the Dutch site close to the town of Oldebroek the site is a heathland ecosystem. Such long-term field-scale manipulation experiments are unique. The sites have been official EU research infrastructures. As a result many parameters have been measured by researchers all over Europe visiting the site. This has led to an enormous collection of known data, making the site attractive for scientists with new ideas. Furthermore, the site is used to train master students in doing fieldwork.