A model of annual plankton cycles
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Analysis of a simplified version of the model shows that a bloom is a deviation from quasi-equilibrium behavior and explains why this will occur when winter production rates are low, which can be explained in terms of this model.Abstract:
A model is presented that exhibits a spring phytoplankton bloom as one feature of a steadily repeating annual cycle of plankton populations. Populations respond to seasonal changes in light (which are gradual) and in mixed layer depth (which may be rapid). The occurrence of a bloom does not require a shallowing of the mixed layer; it does require a low rate of primary production in winter. The lack of phytoplankton blooms in the subarctic Pacific can be explained in terms of this model.Analysis of a simplified version of the model shows that a bloom is a deviation from quasi-equilibrium behavior and explains why this will occur when winter production rates are low.read more
Citations
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Seasonal variation of CO2 and nutrients in the high-latitude surface oceans: A comparative study
TL;DR: In this paper, seasonal data for pCO2 and the concentrations of CO2 and nutrients in high-latitude surface oceans obtained by the Lamont-Doherty CO2 group and Marine Research Institute, Reykjavik, are presented and analyzed.
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Phytoplankton bloom dynamics in coastal ecosystems: A review with some general lessons from sustained investigation of San Francisco Bay, California
TL;DR: In this paper, Long-term observation and research in San Francisco Bay illustrates some patterns of phytoplankton spatial and temporal variability and the underlying mechanisms of this variability.
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Seasonal cycles of pelagic production and consumption
TL;DR: In this paper, seasonal cycles of photic depth, primary production and accumulation (or loss) of algal biomass were obtained from the climatological CZCS chlorophyll field and other data, together with mixed layer depths, which can be grouped into eight models.
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Abandoning Sverdrup's Critical Depth Hypothesis on phytoplankton blooms
TL;DR: A "Dilution Recoupling Hypothesis" is described that focuses on the balance between phytoplankton growth and grazing, and the seasonally varying physical processes influencing this balance.
References
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Temperature and phytoplankton growth in the sea
TL;DR: The variation in growth rate with temperature of unicellular algae suggests that an equation can be written to describe the maximum expected growth rate for temperatures less than 40°C, a logical starting point for modeling phytoplankton growth and photosynthesis in the sea.
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Mathematical formulation of the relationship between photosynthesis and light for phytoplankton
Alan D. Jassby,Trevor Platt +1 more
TL;DR: Eight different mathematical formulations of the photosynthesis—light curve for phytoplankton were recast in terms of the same two parameters: the initial slope α, and the assimilation number PmB.
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Half‐saturation constants for uptake of nitrate and ammonium by marine phytoplankton1
TL;DR: In this article, the half-saturation constant (Ks) was computed as a measure of the ability of a species to use low levels of nitrate and ammonium, and the success of Gonyaulax polyedra, often the dominant dinoflagellate in local red water blooms, appears to be due to its vertical migration from the sea surface in daylight to nitrate-rich water at 10-15m depth at night.