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   Print thisRed Tide Spreads From Maine to Cape CodJune 17, 2005 -- Shellfish beds from Maine to Cape Cod have been closed due to the worst algae bloom in New England since 1972. While red tide is a natural occurrence, some scientists think the phenomenon is happening more frequently and heavily because of nutrient runoff from industrial areas near coastlines. The red tide off of New England may be the result of a unique combination of natural events, such as unusual weather patterns, a heavy winter snow melt, and heavy spring rains, as well as increased sun over the past few weeks. Red tide can be poisonous to fish and other sea life, as well as cause intestinal and neurological disorders in humans who ingest filter-feeding shellfish. While the Northeast's species of algae is not as toxic as the species sometimes found further south, like that found off the coast of Florida, scientists are sampling the toxin levels in both closed and still-open shellfish beds at least three times a week. The National Oceanic and Atmospheric Administration has awarded funds to the Woods Hole Oceanographic Institution for emergency response efforts. A 2000 National Research Council report examines the problems of nutrient over-enrichment in coastal waters, including examples of dangerous algal blooms like red tide. Clean Coastal Waters: Understanding and Reducing the Effects of Nutrient Pollution proposes both immediate local action by coastal managers and a longer-term national strategy. The 1999 Research Council report From Monsoons to Microbes: Understanding the Ocean's Role in Human Health takes a look at helpful and harmful aspects of ocean life and processes – such as red tide’s ability to contaminate seafood with toxins that can cause illnesses in humans.
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