Abstract:Direct measurements of gross primary productivity (GPP) in the water column are essential, but can be spatially and temporally restrictive. Fast repetition rate fluorometry (FRRf) is a bio-optical technique based on chlorophyll a (Chl- a ) fluorescence that can estimate the electron transport rate (ETR PSII ) at photosystem II (PSII) of phytoplankton in real time. However, derivation of phytoplankton GPP in carbon units from ETR PSII remains challenging because the electron requirement for carbon fixat… Show more
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