Abstract
Upwelling effects of subsurface water on phytoplankton growth were evaluated by 9 simulated culture experiments of coastal upwelling. Particular attention was paid to the effects of nutrient enrichment on the surface phytoplankton by the upwelling of nutrient rich subsurface water and of the exposure of the subsurface phytoplankters to surface radiation. The following are the results obtained: the lag period of phytoplankton growth was inversely related to water temperature; the maximum yield of phytoplankton was proportional to the amounts of available initial nutrients; the specific growth rates of phytoplankton were a function of both the initial nutrient concentrations and water temperature; and the maximum specific growth rate was simply proportional to water temperature. According to the relations found, a simple equation is presented for the estimation of phytoplankton growth in a given upwelling. Succession of species in the phytoplankton assemblage in upwelled water mass was also taken into consideration.
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Communicated by M. Anraku, Hiroshima
Contribution No. 416 from the Shimoda Marine Research Center, The University of Tsukuba
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Ishizaka, J., Takahashi, M. & Ichimura, S. Evaluation of coastal upwelling effects on phytoplankton growth by simulated culture experiments. Marine Biology 76, 271–278 (1983). https://doi.org/10.1007/BF00393028
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DOI: https://doi.org/10.1007/BF00393028