. The Composition of sea-water : comparative and descriptive oceanography. Seawater -- Composition. SECT. 2] PRODUCTIVITY, DEFINITION AND MEASUREMENT 153 The most efficient utilization of the absorbed light takes place near the lower boundary of the photic zone. Light saturation never occurs here. It has been demonstrated (Steemann Nielsen and Hansen, 1959 ; Ryther and Menzel, 1959) that the algae are able to adapt those enzymes active in photosynthesis to the. 10,000 Lux 15,000 Fig. 14. Light intensity and relative rates of net photosynthesis in arctic summer plankton from three different dep
. The Composition of sea-water : comparative and descriptive oceanography. Seawater -- Composition. SECT. 2] PRODUCTIVITY, DEFINITION AND MEASUREMENT 153 The most efficient utilization of the absorbed light takes place near the lower boundary of the photic zone. Light saturation never occurs here. It has been demonstrated (Steemann Nielsen and Hansen, 1959 ; Ryther and Menzel, 1959) that the algae are able to adapt those enzymes active in photosynthesis to the. 10,000 Lux 15,000 Fig. 14. Light intensity and relative rates of net photosynthesis in arctic summer plankton from three different depths; 1 = surface, 2 = 25 m, 3 = 50 m. (After Steemann Nielsen and Hansen, 1959.) 100 -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hill, M. N. (Maurice Neville), 1919-. New York : Interscience Pub.
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