Topic: hypoxia

When it comes to allocating money for conservation, reverse auctions can help governments get the biggest bang for their buck.

This map identifies only 20 eutrophic coastal zones in all of Africa, of which 8 have documented hypoxia and 12 are areas of concern.

This map identifies just 24 eutrophic coastal areas with documented hypoxia and 9 areas of concern within Asia.

This map identifies 36 eutrophic coastal zones; 9 with documented hypoxia and 27 areas of concern.

This map identifies 168 eutrophic and hypoxic coastal areas in Europe. Fifty-nine of these are documented hypoxic areas, 106 are areas of concern, and 3 are improved systems that are in recovery.

This map identifies 25 eutrophic and hypoxic zones, with 3 having documented hypoxia and 22 areas of concern. Most are found in Brazil, Chile, and Peru.

This map identifies 131 eutrophic and hypoxic coast zones in North America and the Caribbean. Sixty-two have documented hypoxia, 59 are areas of concern, and 10 are systems in recovery.

Eutrophication—the overenrichment of water by nutrients such as nitrogen and phosphorus—has emerged as a leading water quality problem. This report identifies over 415 areas worldwide that are experiencing eutrophication symptoms, and there are significant information gaps in many regions.

Eutrophication—the over-enrichment of water by nutrients such as nitrogen and phosphorus—is a leading threat to water quality around the world. Also known as “nutrient pollution,” eutrophication upsets the natural balance of aquatic ecosystems, which can lead to algal blooms, red tides, hypoxic or “dead” zones, fish kills, and, eventually, ecosystem collapse.

This map identifies 415 eutrophic and hypoxic coastal systems worldwide. Of these, 169 are documented hypoxic areas, 233 are areas of concern and 13 are systems in recovery.

My team at WRI, together with Dr. Bob Diaz at the Virginia Marine Institute, has identified and mapped 415 eutrophic and hypoxic coastal systems worldwide through an extensive literature review. Of these, 169 are documented hypoxic areas, 233 are areas of concern and 13 are systems in recovery.

Compares a number of policy options to reduce nutrient loss in the Mississippi River Basin from agricultural sources, provide new income sources for farmers, and help address hypoxia in the Gulf of Mexico.

A Better Way for the U.S. Government to Clean Our Water

Coastal Eutrophic and Hypoxic Areas of Africa

Coastal Eutrophic and Hypoxic Areas of Asia

Coastal Eutrophic and Hypoxic Areas of Australia and Oceania

Coastal Eutrophic and Hypoxic Areas of Europe

Coastal Eutrophic and Hypoxic Areas of South America

Coastal Eutrophic and Hypoxic Areas of North America and the Caribbean

Eutrophication and Hypoxia in Coastal Areas: A Global Assessment of the State of Knowledge

Eutrophication and Hypoxia

World Hypoxic and Eutrophic Coastal Areas

Choking Coastal Waters

Awakening the Dead Zone: An investment for agriculture, water quality, and climate change

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WRI Engagement Across the World

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Topic: hypoxia

Our Work

WRI Engagement Across the World