Advances in Understanding Phytoplankton Fluorescence and Photosynthesis
Significant technological and scientific advances were made during the last decade in the measurement of fluorescence from the photosynthetic pigments of natural marine populations of phytoplankton and cyanobacteria. Field studies have begun to employ a diverse array of fluorescence sensors. Airborne Lidar has been used to obtain synoptic, one-dimensional transects of the concentration of chlorophyll a and phycoerythrin. Towed fluorometers have provided rapid, two-dimensional transects of the distribution of chlorophyll a. Moored active and passive fluorometers have given continuous, long-term records of the concentration of chlorophyll with unprecedented temporal detail. Flow cytometers have measured the fluorescence and scattering cross-sections of individual cells. As conventional spectrofluorometers provided fluorescence excitation and emission spectra for entire assemblages of cells and particles, microspectrophotometers provided such data for individual cells.
KeywordsQuantum Yield Reaction Center Nonphotochemical Quenching Variable Fluorescence Photochemical Quenching
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