Tag Archives: Nutrients

Harmful Algal Blooms Receive National Attention

Great Lakes water quality issues received national media attention in early August as Toledo, Ohio issued warnings to nearly half a million people not to use drinking water for cooking, bathing, or consuming due to cyanobacteria toxins known as microcystins. The toxins had reached levels of about 1.0 part per billion, the World Health Organization’s […]

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Researchers Predict Large Toxic Algae Bloom for Lake Erie

University of Michigan and National Oceanic and Atmospheric Administration (NOAA) researchers have forecasted a significant bloom of toxic blue-green algae in Lake Erie late this summer. Expected to be larger than average but considerably smaller than the record-setting 2011 event, the 2014 Lake Erie harmful algae bloom could weigh in at about 22,000 metric tons […]

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Iron Could Limit Spread of Dead Zones, Study Says

In late May, a study led by researchers at Oregon State University (OSU) and published in the journal Nature Geosciences suggests that iron released from continental margin sediments could limit the spread and duration of hypoxic areas, also known as dead zones. The iron may act as a natural limiting switch, keeping ocean systems from […]

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Universities to Aid in Mississippi River Basin Nutrient Reduction

Of the 12 states participating in the Mississippi River/Gulf of Mexico Watershed Nutrient Task Force, ten have submitted either draft or final plans to reduce nutrient runoff and reduce hypoxia in the Mississippi River and Gulf of Mexico. Implementation, funding, and data collection are the biggest challenges facing states in relation to the plans. On […]

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Chesapeake Bay Partners Sign New Watershed Agreement

On June 16, the Chesapeake Executive Council signed the Chesapeake Bay Watershed Agreement, committing Chesapeake Bay Program partners to a set of interrelated goals to advance the restoration, conservation, and protection of the bay, its tributaries, and the lands that surround them. Agreement signatories included the governors of Delaware, Maryland, New York, Pennsylvania, Virginia, and […]

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Researchers Study Duckweed’s Potential for Removing Nitrogen

The North Carolina Museum of Natural Sciences and North Carolina State University are looking at the fast-growing aquatic plant duckweed as a bioremediation agent. Often considered a nuisance plant, some species can double every 36 hours. However, it is the plants’ fast-growing nature that makes them so effective at taking up certain pollutants, particularly nitrogen, […]

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USGS Data Shows Nitrate Increases in Mississippi River Basin

On April 11, as part of Water Week 2014, the Water Environment Federation and the Northeast Midwest Institute hosted a briefing by the U.S. Geological Survey National Water-Quality Assessment Program (NAWQA) on Capitol Hill. The briefing focused on findings and trends in nutrients and pesticides in U.S. streams and rivers. Speakers primarily discussed the Mississippi […]

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EPA Stays Decision on Mississippi Basin Numeric Nutrient Criteria

On March 17, the U.S. Court of Appeals for the Fifth Circuit approved the U.S. Environmental Protection Agency’s (EPA) request to stay a decision on whether the agency must provide numeric nutrient criteria for Mississippi River Basin states. In a previous 2013 U.S. District Court ruling, EPA was given until March 19 to determine whether […]

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University of Maryland Study Examines Effective Chesapeake Bay Management Practices

A new report by the University of Maryland Center for Environmental Science (UMCES) looks at 40 case studies in the Chesapeake Bay watershed to determine which management practices have been most effective. According to the report, “New Insights: Science-based evidence of water quality improvements, challenges, and opportunities in the Chesapeake,” upgrading water resource recovery facilities, […]

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Wisconsin Governor Signs Bill Supporting Adaptive Management

On Dec. 12, Wisconsin Gov. Scott Walker signed Senate Bill 190, providing the Wisconsin Department of Natural Resources with more flexible and cost-effective options for protecting water quality on a watershed scale. The new law paves the way to expand adaptive management and water quality trading, as it allows for pollutant-specific Wisconsin Pollutant Discharge Elimination […]

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