Comments: Overgrazing of phytoplankton, significant cascading effects and economic loss to fishery industry (Sommer et al. 2007).
References: Sommer, T., Armor, C., Baxter, R., Breuer, R., Brown, L., Chotkowski, M., Culberson, S., Feyrer, F., Gingras, M., Herbold, B., Kimmerer, W., Mueller-Solger, A., Nobriga, M., and Souza, K., 2007. The Collapse of Pelagic Fishes in the Upper San Francisco Estuary: El Colapso de los Peces Pelagicos en La Cabecera Del Estuario San Francisco. Fisheries. 32 (6), 270-277. https://doi.org/10.1577/1548-8446(2007)32[270:TCOPFI]2.0.CO;2