Fig. 6
Results of variation partitioning of the driving factors affecting variations in phytoplankton (a) taxonomic and (b) functional group patterns in the middle and lower reaches of the Yangtze River during 2017–2018. Values out of the circles represent the total contribution of climate, habitat, land use, and water quality, while values in the circles represent independent or joint contributions. All scores are based on adjusted R2 values; negative fractional values are not shown, and residuals are shown below the Venn diagrams, with * indicating P < 0.05