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Nutrient methods.
(California Cooperative Oceanic Fisheries Investigation, La Jolla, CA, 2015)
The phytoplankton macro nutrients nitrate, nitrite, silicate, and phosphate in seawater are analyzed using colorimetric assays. Ammonium concentrations are determined using a fluorometric assay.
Primary Productivity History.
(California Cooperative Oceanic Fisheries Investigation, La Jolla, CA, 2017)
A description of the method was written February 2010 by D. Wolgast. Changes to the method are listed below.