The ecology of algae The ecology of algae : a symposium held at the Pymatuning Laboratory of Field Biology on June 18 and 19, 1959 ecologyofalgaesy00tryo Year: 1960 mg Carbon ^/day cr LU UJ 1000 2000 3000 4000 5000 T X A - gC/mVday B - gC/mVday 10 20 30 40 50 Figure 4. The vertical profile of dally photosynthesis in (A) a sewage oxidation pond in Lemmon, South Dakota (from Bartsch and Allum, 1957) and in the Northeastern Sargasso Sea (from Menzel and Ryther, in press).

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