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Table 5.
Significance of effectsa of Fe addition, sample depth, and light levels on phytoplankton variablesb and bacterial productivity

a Measured at day 4 of the experiment; p values are for two-way ANOVA analysis of the bioassay experiments analyzed together; asterisk indicates significant effect at the p < 0.05 level.

b Variables: Fv/Fm = maximum photochemical efficiency of photosystem II, σPSII = functional absorption cross section, P*max = maximum rate of photosynthesis, α* = initial slope of photosynthesis versus irradiance curve, Ek = photoacclimation parameter, Φm = quantum yield of photosynthesis, ā* = spectrally averaged Chl a-specific optical absorption cross section, POC = particulate organic carbon, PON = particulate organic nitrogen.

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