The impact of hydrological manipulation of an unfertilised, Dutch peat grassland area on plant species composition on ditch banks and in ditchwater was studied. The hydrological manipulation involved raising the groundwater level by admitting nutrient-poor, Ca-rich groundwater in one compartment, and by retaining precipitation in another compartment. A third compartment served as control.
Best, E. P. H., van der Schaaf, S., & Comes, M. J. M. (1995). Responses of restored grassland ditch vegetation to hydrological changes, 1989-1992. Vegetatio, 116(2), 107-122. https://doi.org/10.1007/BF00045302