Nature preservation
Breeding ruffs and dunlins used to be common on the tidal meadows, but the number of breeding birds has decreased significantly over the years.
The ruff last bred in 2006 and only a few sandpipers breed. The reason may be overgrowth on the marshes and fluctuating water level in the lagoons.
The water level is now adjusted in summer by an automatic sluice gate and the marshes are grazed by cattle and mowed in an attempt to improve the conditions for breeding so that the birds will return.