More than 700 coastal areas are affected by algal growth and dead zones, despite a growing number of global agreements to reduce water pollution.
Blog Posts: dead zones
Few programs have seen widespread success in tackling water quality problems in the Mississippi River Basin and Gulf of Mexico, but an emerging initiative could present a way forward. The U.S. Department of Agriculture (USDA) launched the Mississippi River Basin Healthy Watersheds Initiative (MRBI) in 2009. New WRI research finds that with some specific improvements, the MRBI’s new approach could play a key role in improving the nation’s inland and coastal water quality.
The Gulf of Mexico has the largest dead zone in the United States and the second-largest in the world. Dead zones form when excessive amounts of nitrogen and phosphorous wash into waterways and spur algal blooms, depleting the water of oxygen and killing fish, shrimp, and other marine life. The Gulf of Mexico dead zone can range between an astounding 3,000 and 8,000 square miles. At its largest, it’s about the size of Massachusetts.
Reducing this growing dead zone problem is a huge scientific, technical, economic, and political challenge. It’s a conundrum that agricultural and environmental experts from across the United States will deliberate this week at the Gulf of Mexico Hypoxia Task Force meeting in Louisville, Kentucky.
One new approach they’ll discuss is voluntary nutrient trading. According to a new study conducted by WRI staff for the EPA, this strategy could be used in the Mississippi River Basin to cost-effectively reduce nitrogen and phosphorous pollution and shrink the Gulf of Mexico dead zone.
- LEARN MORE: Download the full study on the economic feasibility of nutrient trading in the Mississippi River Basin.