Abstract
Diatom populations from the Antarctic Polar Front (convergence) in the Drake Passage area exhibited relatively high : chlorophyll a ratios at light saturation.The permanent water column instability and the adverse meteorological conditions observed in the central Drake Passage area seem to produce a light‐color stress on the physiology of convergence diatoms that are restricted to a blue‐green light environment during their life cycle.The enhanced photosynthesis: chlorophyll a ratios that were determined in experiments with Antarctic Polar Front diatoms when exposed to white (fluorescent) light sources, may be related to the short‐wavelength light background of these diatoms.
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