Maryland Department of Natural Resources
Chesapeake Bay Coastal Bays
Rivers and Streams Watersheds

Prorocentrum minimum
Spring 2000 bloom

During late April and May, Chesapeake Bay scientists at the Maryland Department of Natural Resources (DNR) observed one of the most concentrated and extensive algal blooms in the lower Bay in the past 20 years.  These blooms are referred to as mahogany tides and result from high concentrations of Prorocentrum minimum, a species that contains reddish pigments and causes the water to have a brownish to mahogany hue.  This algal species is common in the Bay and routinely

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occurs in abundance every spring.  Below you can learn more about Prorocentrum minimum and the 2000 bloom.

For more information, please contact Peter Tango at (410) 260-8651.

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