. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 37 2.20. 37 Salinity (°/oo) Figure 21. Total C02 versus salinity, including linear regression line. 37 38 Salin.^y (°/oo) Figure 22. Total alkalinity versus salinity, including quadratic regression line. 40 Total alkalinity decreased from about 2.55 equiv/m3 near the pass to about 2.4 equiv/m3 near the back of the line reef zone. The quadratic regression equation for total alkalinity (TA) versus salinity has a coefficient of determi- nation of 69%: TA (equiv/m3) = 27.157- 1.2795 + 0.0165S2 (12) This descriptiv - Stock Image