Abstract
In the Lobo Reservoir, Southern Brazil, the diatom Melosira italica represents 54% of the total phytoplankton. Through wind action M. italica is continuosly brought up from the bottom, which functions as an "inoculum" for the constant maintenance of the alga in the water column. This study shows that the wind is an environmental factor that must be considered in limnological studies of phytoplankton.
References
Evans, J.H. 1962. The distribution of phytoplankton in some Central East African waters. Hydrobiologia, 19: 229-315.
Lima, W.C., J.G. Tundisi, & M. de A. Marins. 1979: A systemic approach to the sensitivity of Melosira italica (Ehr.) Kutz. Rev. Bras. Biol. 39: 559-563.
Lund, J.W.G. 1954. The scasonal cycle of the plankton diatom Melosira italica (Ehr.) Kutz. subsp. subartica O. Mull. J. Ecol., 42: 151-179.
Lund, J.W.G. 1965. The ecology of the freshwater phytoplankton. Biol. Rev., 40: 231-293.
Lund, J .W.G. 1971. An artificial alteration of the seasonal cycle of plankton diatom Melosira italica Subsp. subartica in an English lake. J. Ecol., 59: 521-533.
Marins, M. de A. 1972. Distribuicao "standing-stock" c aspectos ecológicos da alga Melosira italica em ambiente lacustre: Represa do Lobo. Sao Carlos. Universidade Federal, 113 pp. Tese.
Marins, M. de A. 1975. Ecologia da alga Melosira italica (Ehr.) Kutz: Represado Lobo. Estado de Sao Paulo. (Brasil) Sao Paulo, Universidade de Sao Paulo, 144pp.
Marins, M. de A. 1978. Ecologia, distribuicao e densidade da alga Melosira italica (Bacillariophycea: Centricae) na Represa do Lobo (Broa), Estado de Sao Paulo, Brasil. Rev . Biol. Trop., 26: 19-35.
Nakarnoto, N., M. de A., Marins, & J.G. Tundisi 1976. Synchronous growth of a freshwater diatom Melosira italica under natural environment. Oecología (Berl.), 23: 179-184.
Odum, E.P. 1971. Freshwater ecology. fundamentals of ecology. 3d ed. Philadelphia. Saunders, 295-323.
Strixino, G.B.M.A. 1973. Sobre a ecología dos macro-invertebrados do fundo, na Represa do Lobo. Sao Carlos. Universidade Federal. 242 pp. Tese.
Talling, J.F. 1965. Comparative problems of phytoplankton production and photosynthetic productivity in a tropical and temperate lake. Mem. Inst. Idrobiol. 18, suppl.: 399-424.
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Copyright (c) 1981 Revista de Biología Tropical