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The Ocean’s “Dead Zones” Could Be Getting A Lot Worse

There are over 400 coastal dead zones around the world, regions so poor in dissolved oxygen that marine life can’t survive during the summer months. And it looks like these dead zones will be …

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Is there a technological solution to aquatic dead zones?

Could pumping oxygen-rich surface water into the depths of lakes, estuaries, and coastal ocean waters help ameliorate dangerous dead zones? New work led by Carnegie’s David Koweek and Ken Caldeira …

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Understanding Long Island Sound’s ‘dead zones’

Dead zones occur when influxes of excess nutrients such as nitrogen … Eighteen rivers drain into LIS, with roughly 70% of the freshwater that drains into the estuary coming from the Connecticut …

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Anaerobic Activity Is a Big Contributor in Marine “Dead Zones”

Algae blooms like these create low-oxygen environments around the world. New research could improve predictions of how much these “dead zones” will grow in the future. Credit: Norman Kuring, NASA’s …

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Fishing havens turning into dead zones

Among all the seas, Bay of Bengal is more at risk because it does not have connection with the Arctic ocean which is the coldest,” she added. “Right now, havens for fishing are turning into dead zones …

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NSF grant supports study of low-oxygen zones

What impacts can we expect from the expansion of low-oxygen zones in today’s ocean? An international team of scientists that includes Michigan State University paleo-oceanographer Dalton Hardisty has …

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Warming climate will impact dead zones in Chesapeake Bay

In recent years, scientists have projected increasingly large summer dead zones in the Chesapeake Bay, areas where there is little or no oxygen … In coastal waters, the depletion of oxygen in bottom …

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Our Oceans Are Full of Vast Dead Zones Without Oxygen

Scientists have found evidence that far more of the ocean is made of “dead zones” without oxygen than they previously believed. They studied the chemical signatures left by anaerobic bacteria to …

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‘The ocean is suffocating’: Oxygen dead zones caused by climate change are putting sharks, tuna and marlin at risk

Due to the effects of deoxygenation – the removal of oxygen from the ocean – there are now more than 700 “dead zones” unable to sustain fish that rely on oxygen globally, up from 45 before 1960.

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Ask Scientists: Dead zones and hurricanes

For the sake of this column and yours truly, we’ll try and focus on just this one. So what causes this, or any other, dead zone? You see, the ocean has microscopic algae called Phytoplankton, which …

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