Organic aggregate-attached bacterial community composition and dynamics of the shallow hypertrophic freshwater Lake Taihu, revealed by T-RFLP analysis Evaluation on temporal and spatial changes of biological integrity for shallow lakes in the middle reach of the Yangtze River Survey on threshold detection methods of regime shift in shallow lake ecosystem Relationship Between Surface Sediment Diatoms and Summer Water Quality in Shallow Lakes of the Middle and Lower Reaches of the Yangtze River Hypothesis on cyanobacteria bloom-forming mechanism in large shallow eutrophic lakes Aquatic ecological integrity assessment of four large lakes in the middle-to-lower reaches of the Yangtze River, China