Algal growth and sediment test phosphorus
The line graph gives relationship between algal growth and seven above-mentioned P tests (Figure 6), which reflects that algal growth altered in the incubation period from sediments. There was a highly significant correlation between EC and Selenastrum capricornutumpopulations (r2 = 0.87) (Figure 7). This implies that the sediments with high salinity supply enough P for the growth of the algae. Overall, the pH and CCE had decayed the algal growth. Pearson’s correlations were performed to investigate the relationship between P extraction efficiency and sediment physico-chemical properties. Obviously, the correlation factor was higher for Colwell than other P extractants for EC (r = 0.93, P <0.001)