Abstract
A new method of evaluating the rate of mineralization of photoassimilated organic matter is described. This method enables us to compare the rate of direct mineralization of particulate organic carbon (POC) to CO2 with the rate of solubilization of photoassimilated organic carbon followed by the mineralization of the resultant dissolved organic carbon (DOC) under the same conditions. The direct mineralization of photoassimilated carbon from POC to CO2 is a more significant process compared with the mineralization of extracellular released organic carbon. The first-order rate coefficients range from 0.132 to 0.434 day−1 for direct mineralization and 0.034 to 0.189 day−1 for solubilization.
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References
Anderson, G. C. andR. P. Zeutschel (1970): Release of dissolved organic matter by marine phytoplankton in coastal and offshore areas of North-east Pacific Ocean. Limnol. Oceanogr.,15, 402–407.
Bell, W. H. (1980): Bacterial utilization of algal extracellular products. 1. The kinetic approach. Limnol. Oceanogr.,25, 1007–1020.
Bell, W. H. andE. Sakshaug (1980): Bacterial utilization of algal extracellular products. 2. A kinetic study of natural populations. Limnol. Oceanogr.,25, 1021–1033.
Brand, T. von, N. W. Rakestraw andC. E. Renn (1937): The experimental decomposition and regeneration of nitrogenous organic matter in sea water. Biol. Bull. (Woods Hole),72, 165–175.
Fogg, G. E. (1952): The production of extracellular nitrogenous substances by a blue-green alga. Proc. Roy. Soc. London, ser. B,135, 372–397.
Grill, E. V. andF. A. Richards (1964): Nutrient regeneration from phytoplankton decomposing in seawater. J. Mar. Res.,22, 51–69.
Helleburst, J. A. (1965): Excretion of some organic compounds by marine phytoplankton. Limnol. Oceanogr.,10, 192–206.
Herbst, V. andJ. Overbech (1978): Metabolic coupling between the algaOscillatoria redekei and accompanying bacteria. Naturwissenschaften,65, 598–599.
Ishikawa, H. (1977): Measurement Method for Liquid Scintillation. Nansando, Tokyo, 189 pp. (in Japanese).
Iturriaga, R. (1979): Bacterial activity related to sedimenting particulate matter. Mar. Biol.,55, 157–169.
Iturriaga, R. andH. G. Hoppe (1977): Observation of heterotrophic activity on photoassimilated organic matter. Mar. Biol.,40, 101–108.
Mague, T. H., E. Friberg, D. J. Hughes andI. Morris (1980): Extracellular release of carbon by marine phytoplankon; a physiological approach. Limnol. Oceanogr.,25, 262–279.
Otsuki, A. andT. Hanya (1972): Production of dissolved organic matter from dead green algal cells. Limnol. Oceanogr.,17, 248–257.
Satake, K., Y. Saijo andH. Tominaga (1973): Determination of small quantities of carbon dioxide in natural waters. Jap. J. Limnol.,33, 16–20.
Seki, H. (1972): Method and apparatus for measuring mineralization of labelled compounds in sea-water. La Mer,10, 1–2.
Watt, W. D. (1966): Release of dissolved organic material from the cells of phytoplankton populations. Proc. Roy. Soc. London, ser. B,164, 521–551.
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Ishikawa, M., Nishimura, H. A new method of evaluating the mineralization of particulate and dissolved photoassimilated organic matter. Journal of the Oceanographical Society of Japan 39, 29–42 (1983). https://doi.org/10.1007/BF02210757
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DOI: https://doi.org/10.1007/BF02210757