Seawater chemistry for the four treatments of organically and nutrient enriched water: Controls (unaltered coastal water), organical enrichment (+OE), and/or nitrate (+NO3, +OE +NO3).

Mean values (±SD) of total suspended solids (TSS, mg L−1), particulate organic carbon (POC), nitrogen (PN) and phosphate (PP; all in µmol L−1); chlorophyll-a (Chl-a, µg L−1), dissolved organic carbon (DOC, mg L−1); dissolved inorganic nitrogen [ammonium (NH4+), nitrite and nitrate (NO2−,NO3−)]; soluble reactive phosphorus (SRP); and silicate (Si; all in µmol L−1). N = number of sampling occasions.