At weekly intervals from January through May 1977, during the winter‐spring phytoplankton bloom in Narragansett Bay, Rhode Island, a phytoplankton sample was collected from the bay, encapsulated in dialysis bags, incubated in flowing seawater for 2–5 days at two different light levels, and the cell division rate of Skeletonema costatum was determined. Light intensity, water temperature, and the ambient concentrations of dissolved inorganic nitrogen, phosphorus, and silicon were measured during each experiment. Observed cell division rates were compared with those predicted from a mathematical model incorporating terms for the effect on growth of light intensity, temperature, and silicate concentration. Regression analysis revealed that equations incorporating only the effect of temperature and light intensity were sufficient to explain the observed cell division rate in many experiments, hut the inclusion of silicate concentration improved the relationship. The cell division rate of these natural populations of S. costatum grown in dialysis bags in flowing seawater could thus be predicted with reasonable accuracy with a simple mathematical model primarily formulated from the results of a batch culture study of a single clone of this species.
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Yoder et al. (1979) studied this question.
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