Key result
Net 14C uptake over 24 h incubations varied by a factor of 2 to 3 depending on the starting time, with lowest accumulation for incubations starting at sunrise and highest for those at sunset.
Population
Cultured and natural phytoplankton
Design
Other
Follow-up
24 h
Authors
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Incubation start time may bias phytoplankton productivity estimates; leaves open standardized dawn-to-dawn protocols for future measurements.
The starting time of 24 h incubations significantly affects 14C uptake measurements in phytoplankton, necessitating standardized dawn-to-dawn incubations or appropriate corrections.
Mingelbier et al. (1994) studied Phytoplankton 14C uptake. 24 h incubations with the 14C method vs. Different incubation starting times was evaluated on Net 14C uptake. Net 14C uptake over 24 h incubations varied by a factor of 2 to 3 depending on the starting time, with lowest accumulation for incubations starting at sunrise and highest for those at sunset.