Dead zones are hypoxic (low-oxygen) areas in the world's oceans and large lakes. Hypoxia occurs when dissolved oxygen (DO) concentration falls to or below 2 mg of O2/liter. When a body of water experiences … See more

In the 1970s, marine dead zones were first noted in settled areas where intensive economic use stimulated scientific scrutiny: in the U.S. … See more

The recovery of benthic communities is primarily dependent upon the length and severity of hypoxic conditions inside the hypoxic zone. Less severe conditions and temporary depletion of oxygen allow rapid recovery of benthic communities in the area due to … See more

Aquatic and marine dead zones can be caused by an increase in nutrients (particularly nitrogen and phosphorus) in the water, known as See more

The most notable effects of eutrophication are vegetal blooms, sometimes toxic, loss of biodiversity and anoxia, which can lead to the massive death of aquatic organisms. See more

The Energy Independence and Security Act of 2007 calls for the production of 36 billion US gallons (140,000,000 m ) of renewable fuels by 2022, including 15 billion US gallons (57,000,000 m ) of corn-based ethanol, a tripling of current production that … See more

• Algal bloom
• Anoxic event
• Anoxic waters
• Cultural eutrophication
• Desert
• Eutrophication See more