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Virginia Water Central News (Wed 18 Apr, 2012)
Chesapeake Bay Report from U. Md. Shows Poorer Conditions in 2011
In April 2012, the University of Maryland's Center for Environmental Science released its annual "report card" on the status of biology and water quality in the Chesapeake Bay. The Center analyzes state and federal agency data to see how close three water-quality indicators and three biological indicators are to established thresholds or goals, in response to pollution-reducing and habitat-improving actions and to annual precipitation variation. This year's report, for conditions in 2011, had an overall "grade" of 38%, rated a D+ or "poor ecosystem health"), compared to 42% (C- or "moderately poor ecosystem health) in 2010, and 46% (C or "moderate ecosystem health") in 2009. From 2010 to 2011, scores decreased for five of the six indicators—dissolved oxygen, chlorophyll a, water clarity, submerged aquatic vegetation (or "aquatic grasses"), and the benthic (bottom-dwelling) community—while the score increased for the phytoplankton community (floating, mostly microscopic plants).