Recent Coastal Bays Highlights:View Current Water Quality Conditions April 2007- Four continuous monitors were deployed on Bishopville Prong, Turville Creek, Newport Creek, and at Public Landing on March 15. These monitors are used to collect water quality data (dissolved oxygen, chlorophyll a, temperature, salinity, and pH) every 15 minutes. Continuous monitoring data allows scientists to learn more about these systems, and discern the links between water quality, harmful algae blooms, and fish kills. In addition, monthly field data from 15 stations (out of 45 DNR sites in the Coastal Bays) are available to view. |
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Nutrient Levels are Increasing in the Southern Coastal Bays
March 30, 2006 - While most stations in the southern Coastal Bays met
seagrass objectives for total nitrogen (slightly less for total phosphorus) in
the 2004 State of the Bays report, recently analyzed trends indicate that
concentrations of these nutrients may be on the rise. Non-linear curves applied
to nutrient data collected by the National Park Service at Assateague National
Seashore show many stations with significant changes in trend direction.
Water Mapping Data Available for Coastal Bays
August 18, 2005 - In partnership with the University of Maryland, Chesapeake Biological Laboratory, MD DNR has conducted
monthly water quality mapping in all of the Coastal Bays since April 2005.
Water quality mapping data from 2003 through
2005 is available online. While traditional monitoring programs collect monthly data at a small number of fixed sampling locations, mapping
technology allows for intensive surveying of an entire waterbody through a system of shipboard water quality probes. These probes
measure spatial position, water depth, water temperature, salinity, dissolved oxygen, turbidity (clarity of the water), and chlorophyll
(indicator of plankton concentrations) from a flow-through stream of water collected near the water body’s surface. This system
allows data to be collected rapidly (approximately every 4 seconds) and while the boat is traveling at speeds up to 20 knots. Traditional monitoring programs are needed to provide a good baseline for watershed assessment and long-term trends,
while mapping technology is being used to help better evaluate the entire system and pick up small-scale spatial gradients that are
critical habitat for seagrasses and other
living resources. Algae are a natural and critical part of our Chesapeake and Coastal Bays ecosystems.
Algae, like land plants, capture the sun’s energy and support the food web that leads to fish and shellfish. Algae may become harmful
if they occur in an unnaturally high abundance or if they produce a toxin.
Learn more about Harmful
Algae in Maryland and potentially harmful algae blooms in the
Coastal Bays.
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Water Quality | Harmful
Algae | Living Resources Return to the Maryland
DNR Home Page. |
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