Latest Oxygen minimum zone Stories

low-oxygen zone
2014-08-11 03:00:40

Hannah Hickey, University of Washington As the complex story of climate change unfolds, many of the endings are grim. But there are exceptions. Predictions that the lowest-oxygen environments in the ocean would get worse may not come to pass. Instead, University of Washington research shows climate change, as it weakens the trade winds, could shrink the size of these extreme low-oxygen waters. "The tropics should actually get better oxygenated as the climate warms up," said Curtis...

Scientists Demonstrate Influence Of Eddies On The Oxygen Sustenance
2013-11-18 13:25:24

GEOMAR Helmholtz Centre for Ocean Research Kiel More than four months from November 2012 to March 2013 Kiel ocean scientists investigated on the German research vessel METEOR the oxygen-poor upwelling regions in the tropical Pacific off Peru. First results of the project carried out in the context of the Collaborative Research Centre (SFB) 754 “Climate-biogeochemistry interactions in the tropical ocean” show, how eddies in the ocean influence the oxygen and nutrient distribution in the...

Material Fluxes Decoded In The Tropical Ocean
2013-08-02 13:21:50

Helmholtz Centre for Ocean Research Kiel (GEOMAR) Turbulent processes provide important contribution to oxygen supply How is vital oxygen supplied to the tropical ocean? For the first time, oceanographers at GEOMAR Helmholtz Centre for Ocean Research Kiel were able to make quantitative statements regarding this question. They showed that about one third of the oxygen supply in these areas is provided by turbulent processes, such as eddies or internal waves. The study, conducted in the...

2011-07-02 02:47:39

Tiny marine organisms called zooplankton can use specialized adaptations that allow them to hide from predators in areas of the ocean where oxygen levels are so low that almost nothing can survive, but they may run into trouble as these areas expand due to climate change. "Oxygen minimum zones are very difficult places to survive," said University of Rhode Island doctoral student Leanne Elder. "But we have discovered that these tiny animals have adapted in two specialized ways. First, they...

2010-03-24 11:12:55

Some regions of the deep ocean floor support abundant populations of organisms, despite being overlain by water that contains very little oxygen, according to an international study led by scientists at the United Kingdom's National Oceanography Center, Southampton. But global warming is likely to exacerbate oxygen depletion and thereby reduce biodiversity in these regions, they warn. The sunlit surface waters tend to be well oxygenated as a result of their connection with the atmosphere....

2009-10-22 14:34:13

Among the many changes in the ocean is the expansion of oxygen-deficient or oxygen minimum zones (OMZs), also known as dead zones, which affect the processes by which carbon is captured and sequestered on the seafloor and alter the microbial activities that impact the rate and magnitude of ocean carbon sequestration. Despite the importance of these effects, very little is known about the metabolism of OMZ microbes and how they respond to environmental changes. In the Oct. 23 issue of the...

2009-09-02 15:13:11

After more than a decade of inquiry, a Princeton-led team of scientists has turned the tables on a long-standing controversy to re-establish an old truth about nitrogen mixing in the oceans. For decades, scientists thought they had a handle on the workings of an intricate natural mechanism known as the nitrogen cycle, essential to maintaining life on Earth. This process, one of nature's most elegant sleights-of-hand, shuttles nitrogen from the soils to the oceans to the atmosphere and back. A...

2009-01-25 16:15:00

Unchecked global warming would leave ocean dwellers gasping for breath. Dead zones are low-oxygen areas in the ocean where higher life forms such as fish, crabs and clams are not able to live. In shallow coastal regions, these zones can be caused by runoff of excess fertilizers from farming. A team of Danish researchers have now shown that unchecked global warming would lead to a dramatic expansion of low-oxygen areas zones in the global ocean by a factor of 10 or more. Whereas some coastal...

2008-05-02 01:40:00

Researchers warn that as the oceans are heated by global warming, low-oxygen zones are threatening sea life, making it difficult for some to survive.Over the last 50 years, Oxygen-depleted zones in the central and eastern equatorial Atlantic and equatorial Pacific oceans appear to have expanded, according to a report published in the journal Science.Concerns about the threat to sea life in low-oxygen zones in the Gulf of Mexico have been studied in recent years. Lothar Stramma of the...

Word of the Day
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This word is probably from the dialectal 'boldacious,' a blend of 'bold' and 'audacious.'