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2010-07-25 15:32:48
RED TIDE A red tide is a “bloom” of a group of phytoplankton called dinoflagellates. A “bloom” occurs when a particular species of dinoflagellate begins reproducing rapidly, resulting in millions of cells in each gallon of water. Not all phytoplankton species produce visible blooms. The phytoplankton cells that cause a red tide contain pigments for capturing sunlight needed for cell nourishment, growth, and reproduction. These pigments can give off a reddish color in the water when enough are present. Source: California Department of Public Health (cdph.a.gov) Red Tide is a phenomenon caused by algal blooms along coastal areas. These blooms generally discolor the waters and may cause significant problems for local biota by depleting oxgen and/or releasing toxins. Source: serc.carleton.edu