Ground beetles in Dutch heathlands

Data collection was started by P.J. den Boer of the Biological Station in Wijster, Drenthe, The Netherlands, part of the agricultural university Wageningen, in 1959 to study population dynamics of ground beetles (Carabidae) in heathlands. Many publications have appeared about these data. The Biological station was discontinued in the 1990's but data collection was continued by the foundation WBBS (Rikjan Vermeulen). Reports of the findings have been appearing, but no scientific papers were published between ca 1990 and 2015.