Fig. 1. Location maps showing the study area, including the monitoring stations.
Fig. 2. Schematic diagrams showing key processes causing light attenuation at water surface layer and impact of light on photosynthesis in water column as a function of light attenuation (modified from Dodds and Whiles, 2010, Fig. 3.5).
Fig. 3. Vertical variations of underwater irradiance and I/Io at HCUI-1 and HCUI-2. The black circles and horizontal bars represent the mean and standard deviation values at specific water depth, respectively.
Fig. 4. Temporal variation of euphotic depths estimated at HCUI-1/2, including the related physico-chemical conditions such as stage, flow, wind speed, rainfall, thermal stratification, SS, Chl-a concentrations and Microcystis abundance.
Fig. 5. Comparison between the observed and expected light extinction coefficients.
Fig. 6. Comparison between the observed and modeled I/Io.
Table 1. Light extinction coefficients and euphotic depths estimated at HCUI-1 and HCUI-2
Table 2. Temporal variations of light extinction coefficient with respect to changes in water environment
Table 3. Light extinction coefficients for various river/shallow lake environments
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