Phytoplankton in the water column with fast-sinking detritus. Simulated phytoplankton in the upper 50 m of the water column, with fast-sinking detritus (D2) set at 50 m d^–1(a), 15 m d^–1(b), and 5 m d^–1(c). First bloom is dominated by large phytoplankton (P2, diatoms) and the later bloom in (c) is dominated by small phytoplankton (P1, flagellates). DOI: https://doi.org/10.1525/elementa.229.f9