Submerged macrophytes is key community in shallow lake ecosystem.It plays important role in water environmental quality and aquicolous ecosystem structure.
10.basement and unmetamorphosed terrigenous shallow carbonate rock in the Austria Alps -South Alps obduc-tion nappe and radiolarian silicalite in fault basins.
These basins were generally filled with upward fining and deepening sedimentary sequence that comprises nonmarine to marine, shallow marine to deep marine depositional systems.
It was only a bayou in the ancient time and later on it became a lake for the tide had brought sand to the bayou.After numerous constructions, it became a semi-closed adlittoral lake.