Biezenkuilen

The Biezenkuilen is a pond that has formed due to the blowing away of the covering sand. The drifting sands are poor in nutrients and calcium. The vegetation along the shore of 'De Biezenkuilen' consists almost exclusively of common reed and bulrush (sedge). The same vegetation can also be found in the broad marshy belt with channels and pits surrounding the pond. In the higher areas of that fringe zone, shrub and heather grow. The total area of the pond, including the marshy belt around it, amounts to nearly 3 hectares. At normal water levels, about 1.4 hectares is covered by open water in the middle of summer. Its depth varies between 30 and 100 cm. The pond is fed by rainwater, and possibly also receives groundwater from the northern dunes.

After the pond was dredged and reconfigured in 1991, the populations of water and surface bugs and water beetles in the pond were monitored for five years (1992-1996) to see which species and at what rate the different species would start to repopulate the cleaned pond.

Veleau | Fietsen langs water