They drain the surrounding land, provide a supply of water and improve the yield of the poor land by permitting fish farming. The ponds are not natural, but they have created an exceptionally interesting and complementary natural environment that hosts an abundance of plant and animal life. Pond Flora and Fauna. This biotope is rich.
Ducks take advantage of it, particularly during their reproductive cycle.
Great crested and black necked grebes, black terns and whiskered terns nest here. The reed beds and willow stands ring the ponds with a thick girdle of reeds, reedmace, club rushes, bull rushes, sedges and willows. The willow stands around the reed beds are an impenetrable wall that protect the nesting heron colonies. The mud flats, visible when the water level drops in summer or when the ponds are emptied to harvest the fish, feed thousands of tiny swamp creatures. The plovers, godwits, peewits, sandpipers, and snipes gorge themselves on worms, mollusks and crustaceans.