Saturday, February 11, 2012
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Our Bay: DNR Digest

Published 08/28/10
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What is an algae bloom and why is it harmful to our waterways?

Algae are a natural and critical part of the Chesapeake Bay. Algae, like plants, capture the sun's energy and support the food web. Their size ranges from tiny microscopic cells (phytoplankton) to large mats of visible "macroalgae" or seaweed.

Algae communities reflect existing nutrient levels. An over-abundance of nutrients often results in dense populations of algae, also known as blooms.

Algae may become harmful if they occur in an unnaturally high abundance or if they produce a toxin. A high abundance of algae...

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