Restoration measures in raised bog remnants frequently include the construction of dams, intended to retain rainwater and decrease fluctuations in the water table. However, comparative research in various bog remnants has provided strong indications that there are risks for macroinvertebrates. Risks include (i) rapid changes causing a disturbance, and (ii) similar changes at a large scale leading to a loss of heterogeneity, and consequently to a loss of species. This paper directly examines the risks associated with rewetting measures in bog remnants by investigating and comparing the macroinvertebrate assemblages in the same area before and after measures took effect.
To assess whether raised bog restoration measures contribute to the conservation and restoration of the fauna diversity, macroinvertebrate species assemblages were compared between water bodies created by rewetting measures and water bodies which have not been subject to restoration measures, but are remnants of former peat cuttings and trenches used for buckwheat culture in the past.