Chlorophyll a (Ca) = 13.95 A665 − 6.88 A649 (3) Chlorophyll b (Cb) = 24.96 A649 − 7.32 A665 (4) Carotenoids (Cx+c) = (1000 A470 − 2.05 Ca − 104 Cb)/245 (5) Total chlorophyll content = Ca +Cb The amounts of pigments were calculated as milligrams per litre of pla...