Abstract
Rates of primary production and compensation depths were determined for Codium fragile by 3 different measurements: (1) growth rate; (2) rate of 14C-fixation; (3) rate of O2 evolution. The radiocarbon assay employed liquid scintillation counting of homogeneous suspensions of seaweed tissue in gelled fluor. Maximum rates of primary production ranged between 2.6 and 3.9 mg C-fixed/g dry weight/h. The compensation depth is regulated by local turbidity, as is vertical distribution. All 3 methods for the determination of compensation depth, when used simultaneously, gave the same value. Chlorophyll levels were found to vary inversely with available light, hence depth, whereas starch levels were found to vary directly with available light.
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Literature Cited
Brown, D. L. and E. B. Tregunna: Inhibition of respiration during photosynthesis by some algae. Can. J. Bot. 45, 1135–1143 (1967).
Brinkhuis, B. H. and A. C. Churchill: Primary productivity of Codium fragile. J. Phycol. (Suppl.) 8, p. 15 (1972).
Kirk, J. T. O.: Studies on the dependence of chlorophyll synthesis and protein synthesis in Euglena gracilis, together with a nomogram for determination of chlorophyll concentration. Planta 78, 200–207 (1968).
Malinowski, K. C. and J. Ramus: Growth of the green alga Codium fragile in a Connecticut estuary. J. Phycol. 9, 102–110 (1973).
Moeller, H.: Ecology and life history of Codium fragile subsp. tomentosoides. Ph. D. Dissertation, 128 pp. Rutgers, The State University 1969.
Pereival, E. and R. H. McDowell: Chemistry and enzymology of marine algal polysaccharides, 219 pp. London and New York: Academic Press 1967.
Ramus, J.: Codium: the invader. Discovery, New Haven, USA 6, 59–68 (1971).
Riley, G. A.: Oceanography of Long Island sound, 1952–1954. II. Physical oceanography. Bull. Bingham oceanogr. Coll. 15, 15–46 (1956).
Shuster, L. and R. H. Gifford: Changes in 3′-nucleotidase during the germination of wheat embryos. Archs Biochem. Biophys. 96, 534–540 (1962).
Steeman Nielsen, E.: The use of radioactive carbon (C-14) for measuring organic production in the sea. J. Cons. perm. int. Explor. Mer 18, 117–140 (1952).
Strickland, J. D. H. and T. R. Parsons: A practical handbook of seawater analysis. Bull. Fish. Res. Bd Can. 167, 1–311 (1968).
Sverdrup, H. V., M. W. Johnson and R. H. Fleming: The oceans: their physics, chemistry and general biology, 1087 pp. New York: Prentice-Hall, Inc. 1942.
Thomas, W. H.: Physiological factors affecting the interpretation of phytoplankton production measurements. In: Primary productivity measurement, marine and freshwater, pp 147–162. Ed. by M. S. Doty. Washington, D. C.: U.S.A.E.C., T.L.D.-7633. 1961.
Vollenweider, R. A.: Primary production in aquatic environments, 213 pp. Oxford and Edinburgh: Blackwell Scientific Publications 1971.
Wang, C. H. and D. Willis: Measurement of radioactivity by the liquid (internal-sample) scintillation method. In: Radiotracer methodology in biological science, pp 104–143. Englewood Cliffs, New Jersey: Prentice-Hall, Inc. 1965.
Wiebe, L. I., A. Stevens, A. A. Noujaim and C. Ediss: Use of Aquasol scintillator mixture for liquid scintillation counting of beta radioactivity in biological tissue. Int. J. appl. Radiat. Isotopes 22, 663–666 (1971).
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Communicated by J. Bunt, Miami
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Wassman, E.R., Ramus, J. Primary-Production measurements for the green seaweed Codium fragile in long island sound. Mar. Biol. 21, 289–297 (1973). https://doi.org/10.1007/BF00381085
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DOI: https://doi.org/10.1007/BF00381085