Science
Algae bloom causes 'crab jubilee'
Portsmouth, Va. | August 31, 2008 12:01:13 AM IST
Algae blooms in Virginia estuaries are depriving the ecosystem of oxygen, killing fish and driving crabs to struggle to breath. One result is known locally as the crab jubilee, The Virginian-Pilot reported. Crabs swarm over docks and pilings to get out of the oxygen-depleted water. Wick Harlan of the Virginia Department of Environmental Quality said the phenomenon appears to be most noticeable on the Elizabeth River and the lower reaches of the James River in the Tidewater area. While the algae bloom is not as heavy as it was last year, the fish kills appear to be worse, he said. The algae is fertilized by nitrogen and phosphorus washing off city streets and suburban lawns and gardens into the rivers, estuaries and Chesapeake Bay. At their most extensive, the blooms can create dead zones with no oxygen that are unable to sustain life. Betty Cartier, who runs a coffee kiosk next to the High Street ferry landing in Portsmouth, described the smell of dead fish as just horrendous. Everybody comes off the ferry and wants to know what's going on, she said. (UPI)
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