Fig. 5From: Development of a phytoplankton-based index of biotic integrity for ecological health assessment in the Yangtze RiverPearson correlations among P-IBI, water quality parameters, and land use of the a wet and b dry seasons in the middle and lower reaches of the Yangtze River during 2017–2018. *P < 0.05, **P < 0.01, ***P < 0.001Back to article page