Contribution of picoplankton to primary production in estuarine,coastal and equatorial waters of Brazil

Quantitative data on primary production of picoplankton are presented for three different Brazilian marine ecosystems: estuarine, coastal and oceanic. The size fraction from 0.45 μm to 1.0 μm was responsible for 3.0% to 28.5% of ¹⁴C uptake in estuarine waters; 18.5% to 40.4% in coastal waters, and 6.7% to 100.0% in oceanic waters, respectively.