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Algae Blooms in Commercial Fish Production Ponds

Document format: pdf

Publisher: Southern Regional Aquaculture Center

Creation date: May 1994

During daylight hours, the phytoplankton in algal blooms usually produce more oxygen than they use, resulting in a surplus for fish and other organisms. At night or in cloudy weather, however, production of oxygen through photosynthesis ceases or is greatly reduced, but the consumption rate does not change, often resulting in a deficit in the oxygen "budget." Under certain conditions, the level of oxygen can become critically low and fish may suffocate or at least become stressed to the point of being susceptible to disease.

Key Words: USDA • SRAC • Pond Production • Algae • Algal Bloom • Algal Blooms • phytoplankton