Abstract
Light saturation curves of natural assemblages of phytoplankton at 4 stations in Cabo Frio coastal waters were examined and related to changes in environmental conditions, based on 263 experiments carried out weekly during two years. No differences in specific productivity at saturating light (Pm B ) between stations were detected. Global mean value of Pm B was 4.7 mgC mgChla −1 h−1 with a range from 0.50 to 15.29. Significant seasonal variations were not observed. Correlation and regression analysis attributed most of Pm B variation to temperature, salinity, nutrients and the phaeopigment: chlorophyll-a ratio.
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