Biologists struggle with growing plankton threat: Since 1991, blooms of the poison-producing plankton have become more frequent; it threatens mammals, humans. From: Tribune (San Luis Obispo, CA) | Date: May 29, 2006 | COPYRIGHT 2006 The Tribune. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group.Copyright information

Byline: David Sneed

May 29--Every two weeks, Michele Roest walks to the end of the San Simeon Pier. There, she lowers and raises a plankton net three times in the top 10 feet of water. The resulting sample will be mailed to a state laboratory in Richmond, where biologists are trying to understand a mysterious threat to marine mammals and people alike: domoic-acid poisoning. Domoic acid was first detected in California in 1991. Since then, blooms of the plankton -...

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