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Researchers dive into the biogeochemistry of ocean anoxic zones

With no dissolved oxygen to sustain animals or plants, ocean anoxic zones are areas where only microbes suited to the environment can live.

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‘Dead Zones’ Multiplying In World’s Oceans

‘Dead Zones’ Multiplying In World’s Oceans A global study shows the number of “dead zones” — areas of ocean with too little oxygen for most marine life — has increased by one-third since 1995 …

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DEAD ZONES: Can the Ocean Run Out of Oxygen? [Science Video]

For most of the year, the Gulf of Mexico is teeming with marine life, from tiny crustaceans to massive whales. But every summer, disaster strikes. Around May, animals begin to flee the area. And soon, …

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Tropical Storm Isaias spreads dead zones in Severn River, killing thousands of fish

Strong winds from Tropical Storm Isaias caused oxygen-depleted water at the bottom of the Severn River to mix with the rest of the water column, killing at least 10,000 fish Tuesday, the Maryland …

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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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