Abstract
Buoyancy of natural populations of marine phytoplankton was studied in a fjord in western Norway during the diatom bloom and in autumn. The study was carried out under approximate in situ conditions by means of an apparatus described in the paper. During the spring bloom, positive buoyancy was observed only once. Sinking rates of individual fractions ranged from 0 to more than 9 m day-1, and the mean sinking rates of the total chlorophyll content from 0 to at least 2. 2 m day-1. The highest rates occurred in the post-bloom period, while sinking appeared negligible from the onset of the bloom up to its culmination. In autumn, the population was dominated by small, flagellated cells. Positive buoyancy, or upward migration, was then observed in two out of three experiments.
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Literature Cited
Durbin, E.G., R.W. Krawiec and T.J. Smayda: Seasonal studies on the relative importance of different size fractions of phytoplankton in Narragansett Bay (USA). Mar. Biol. 32, 271–287 (1975)
Eppley, R.W., R.W. Holmes and J.D.H. Strickland: Sinking rates of marine phytoplankton measured with a fluorometer. J. exp. mar. Biol. Ecol. 1, 191–208 (1967)
Gillbricht, M.: Untersuchungen zur Produktions-biologie des Planktons in der Kieler Bucht. Kieler Meeresforsch. 8, 173–191 (1952)
Grøntved, J.: Investigations on the phytoplankton in the southern North Sea in May 1947. Meddr Kommn Danm. Fisk.-og Havunders. (Ser. Plankton) 5, 1–51 (1952)
Lännergren, C. and H.R. Skjoldal: The spring phytoplankton bloom in Lindåspollene, a landlocked Norwegian fjord. Autotrophic and heterotrophic activities in relation to nutrients. Proc. 10 th Eur. mar. Biol. Symp. 2, 363–391 (1976). (Ed. by G. Persoone and E. Jaspers. Wetteren, Belgium: Universa Press)
Lewin, J. and T. Hruby: Blooms of surf-zone diatoms along the coast of the Olympic Peninsula, Washington. II. A diel periodicity in buoyancy shown by the surf-zone diatom species, Chaetoceros armatum T. West. Estuar. cstl mar. Sci. 1, 101–105 (1973)
Lisitsyn, A.P., Y.I. Belyayev, Y.A. Bogdanov and A.N. Bogoyavlenskiy: Distribution relationships and forms of silicon suspended in waters of the world ocean. Int. Geol. Rev. 9, 253–274 (1967)
Munk, W.H. and G.A. Riley: Absorbtion of nutrients by aquatic plants. J. mar. Res. 11, 215–240 (1952)
Ryther, R.A.: Physiological aspects of spring diatom flowerings. Bull. Bingham oceanogr. Coll. 8, 1–53 (1943)
Smayda, T.J.: The suspension and sinking of phytoplankton in the sea. Oceanogr. mar. Biol. A. Rev. 8, 353–414 (1970)
— and B.J. Boleyn: Experimental observations on the flotation of marine diatoms. II. Skeletonema costatum and Rhizosolenia setigera. Limnol. Oceanogr. 11, 18–34 (1966a)
——: Experimental observations on the flotation of marine diatoms. III. Bacteriastrum hyalinum and Chaetoceros lauderi. Limnol. Oceanogr. 11, 35–43 (1966b)
Steemann-Nielsen, E. and E.A. Jensen: Primary organic production. The autotrophic production of organic matter in the oceans. Galathea Rep. 1, 49–136 (1957)
Thayer, L.A.: Diatom water-blooms on the coast of Washington. Proc. La Acad. Sci. 2, 67–71 (1935)
Utermöhl, H.: Neue Wege der quantitativen Erfassung des Planktons. Verh. int. Verein. theor. angew. Limnol. 5, 567–596 (1931)
Venrick, E.L., J.A. McGowan and A.W. Mantyla: Deep maxima of photosynthetic chlorophyll in the Pacific Ocean. Fish. Bull. U.S. 71, 41–52 (1973)
Winter, D.F., K. Banse and G.C. Anderson: The dynamics of phytoplankton blooms in Puget Sound, a fjord in the northwestern United States. Mar. Biol. 29, 139–176 (1975)
Yentsch, C.S. and D.W. Menzel: A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence. Deep-Sea Res. 10, 221–231 (1963)
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Communicated by O. Kinne, Hamburg
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Lännergren, C. Buoyancy of natural populations of marine phytoplankton. Mar. Biol. 54, 1–10 (1979). https://doi.org/10.1007/BF00387045
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DOI: https://doi.org/10.1007/BF00387045