Sentences with phrase «dead zones form»

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.

Such natural dead zones form off the west coasts of North and South America and off southwest Africa.

Now if a dead zone forms there it's small, Rabalais says.

Not exact matches

That fits with analysis of sea - floor sediments, which suggests that a dead zone of around 600 square kilometres formed here about 40,000 years ago.

The hypoxic seawater is distinct from the well - known «dead zones» that form at the mouths of the Mississippi and other rivers around the world.

They're different from the so - called dead zones that form at the mouths of rivers whose polluted waters prompt algal blooms.

Rabalais team - teaches biological oceanography at Louisiana State University, and continues her own research on Mississippi River - Gulf of Mexico interactions, forming the world's second largest dead zone.

The combination of the ashfall and oceanic dead zone concentrated enough carbon to form hydrocarbons.

That brought to mind the oceanic «dead zones» that often form today near the mouths of rivers.

Today, we need look no further than the New Jersey - size dead zone that forms each summer in the Mississippi River Delta, or the thousand - mile - wide swath of decomposing plastic in the northern Pacific Ocean to see that this «dilution» policy has helped place a once flourishing ocean ecosystem on the brink of collapse.

Dead zones that form nightly in shallow waters make oysters living there more vulnerable to deadly Dermo disease, according to SERC research.

Prairie, together with other conservation practices already on farms, advocates claim, has the potential to reduce the massive runoff of nutrient pollution mostly from Midwestern farms that flows down the Mississippi River and forms a gigantic «dead zone» in the Gulf of Mexico every summer.

Oxygen - depleted «dead zones» often form in the northern Gulf of Mexico due to nutrient - rich runoff from the Mississippi and Atchafalaya rivers, which are seen here as tan and greenish - brown plumes visible from the International Space Station in 2012.

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Natural processes, such as the churning of ocean waters, can form dead zones on their own.

The dead zones were created in large areas of swirling water known as eddies, which form when two or more currents collide.

Dead zones typically form near coastlines where human impact on the environment is most severe.

For example is the «dead zone» really increasing due to the extra pollution form corn based ethanol.