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Hard-shelled clams (aka quahogs, top) and oysters tagged for research.

Hard-shelled clams (aka quahogs, top) and oysters tagged for research.
Hard-shelled clams (aka quahogs, top) and oysters tagged for research.
Hard-shelled clams (aka quahogs, top) and oysters tagged for research.
Hard-shelled clams (aka quahogs, top) and oysters tagged for research.
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316129
Murphy, Diane
Hard-shelled clams (aka quahogs, top) and oysters tagged for research.
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06/06/2012
Wellfleet1.jpg
Image Of the Day caption:
Researchers from WHOI Sea Grant and the Cape Cod Cooperative Extension analyzed wild and farmed oysters and quahogs to see how much nitrogen the shellfish can store in their shells and tissue. Excess nitrogen from fertilizer runoff and septic tanks boosts the growth of algae that ponds and other water bodies and reduce oxygen levels in them. Shellfish are efficient filter feeders that can help remove excess nitrogen. Towns are considering seeding and growing shellfish to help reduce nitrogen pollution. The research will help them estimate how much excess nitrogen shellfish can remove from coastal waters.
Caption from Oceanus magazine, Vol. 53, No. 1, pg. 7:
Researcher Joshua Reitsma collects shellfish samples in Barnstable Harbor. He and colleagues analyzed wild and farmed oysters and quahogs (above) to see how much nitrogen they store in their shells.
Photo courtesy of Diane Murphy, Woods Hole Sea Grant
© Woods Hole Sea Grant
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