During the Subarctic Pacific Iron Experiment for the Ecosystem Dynamics Study (SEEDS)

• Main Author: Hiroaki Saito
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Pacific; Subarctic
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.360.546; http://www.pices.int/publications/scientific_reports/Report31/Rep_31_pp19-31_wsh_absrtacts_2.pdf

chlorophyll a concentration in the iron patch reached near maximum in 9 days (D9) after the iron fertilization and after that remained more or less constant. In spite of the stability of chlorophyll a, primary production was higher than 1.4–2.0 g C m –2 d –1 during D9–D13. As most of the carbon synthesized by phytoplankton after the iron fertilization (IF) was suspended in the water column (Tsuda et al., 2003), these results indicated that loss by grazing, and other factors in the surface mixed layer during D9–D13, was as high as 3–4 mg chlorophyll a m –3 d –1, assuming a C:Chl ratio of 30 and the mixed-layer depth of 15 m. During the SEEDS experiment, heterotrophic nanoflagellates (HNF), microzooplankton, and