Modeling phytoplankton growth rates
نویسندگان
چکیده
منابع مشابه
Growth rates of phytoplankton under fluctuating light
1. The effect of light fluctuations on the growth rates of four species of freshwater phytoplankton was investigated. Experimental light regimes included constant irradiance and fluctuations of a step function form, with equal proportion of high (maximum of 240 mmol photons m s) and low light (minimum of 5 mmol photons m s) (or dark) in a period. Fluctuations of 1, 8 and 24-h periods were impos...
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Nutrient availability is one of the major factors regulating marine productivity and phytoplankton community structure. While the response of phytoplankton species to nutrient variation is relatively well known, that of phytoplankton community remains unclear. We question whether phytoplankton community growth rates respond to nutrient concentration in a similar manner to phytoplankton species ...
متن کاملOn phytoplankton growth rates and particulate C : N : P ratios at low light
In a series of continuous culture experiments involving N-limited growth of the chrysophyte Pavlova lutheri (Mono) I found that large deviations in cellular C : N : P ratios from the Redfield ratio of 106 : 16 : 1 occurred only as a function of low relative growth rate and not of low light intensity. By contrast, light-limited phy-toplankton in continuous culture can attain the Redfield chemica...
متن کاملGrowth rates of coastal phytoplankton from time-series measurements with a submersible flow cytometer
Our understanding of the dynamics of phytoplankton communities has been limited by the space and timescales associated with traditional monitoring approaches. To overcome some of these limitations, we have developed a submersible flow cytometer (FlowCytobot) that is designed for extended autonomous monitoring of phytoplankton abundance, cell size, and pigmentation. FlowCytobot was moored on the...
متن کاملPigment-specific rates of phytoplankton growth and microzooplankton grazing in the open subarctic Pacific Ocean
A long-standing hypothesis states that low year-round phytoplankton biomass in the open subarctic Pacific Ocean is maintained by herbivorous grazing. To evaluate the balance between phytoplankton growth and microzooplankton grazing, we carried out seawater dilution experiments at two subarctic Pacific locations in June and September 1987. Pigment-specific phytoplankton growth and grazing rates ...
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ژورنال
عنوان ژورنال: Journal of Plankton Research
سال: 1996
ISSN: 0142-7873,1464-3774
DOI: 10.1093/plankt/18.7.1269