Submersed macrophytes play a key structuring role in ecosystems and help to maintain the clear-water state in shallow lakes (Moss, 1990; Jeppesen et al., 1998; Scheffer, 1998).
Submersed macrophytes play a key structuring role in ecosystemsand help to maintain the clear-water state in shallow lakes(Moss, 1990; Jeppesen et al., 1998; Scheffer, 1998).