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News articles on hypoxia
Mongabay.com news articles on hypoxia in blog format. Updated regularly.
(06/16/2011) Flooding in the Midwest is likely to cause the largest-ever dead zone in the Gulf of Mexico, reports the National Oceanic and Atmospheric Administration (NOAA).
Climate change, ocean acidification may doom jumbo squid
(12/15/2008) Ocean acidification — driven by rising carbon dioxide levels in the atmosphere — may hurt the Humboldt squid, report researchers writing in the journal Proceedings of the National Academy of Sciences.
The long-ignored ocean emergency and what can be done to address it
(08/18/2008) This year has been full of bad news regarding marine ecosystems: one-third of coral species threatened with extinction, dead-zones spread to 415 sites, half of U.S. reefs in fair or bad condition, increase in ocean acidification, tuna and shark populations collapsing, and only four percent of ocean considered pristine. Jeremy Jackson, director of the Scripps Center for Marine Biodiversity and Conservation at the University of California, San Diego, synthesizes such reports and others into a new paper, published in the journal Proceedings of the Naional Academy of Sciences, that boldly lays out the scope of the oceanic emergency and what urgently needs to be done.
Marine 'dead zones' double every decade
(08/14/2008) Dead zones have spread across the ocean at alarming rates. Currently 415 sites, usually along coastlines, have shown signs of seasonal to persistent hypoxia—a severe lack of oxygen. In a new essay in Science, researchers Robert Diaz and Rutger Rosenberg argue that marine dead zones have "become a major worldwide environmental problem". Marine dead zones now occupy a portion of the ocean equal to that of the United Kingdom and continue to grow, doubling every decade since the 1960s and showing no sign of abating.
U.S. dead zones may reach record levels this summer
(07/15/2008) "Dead zones" in the Gulf of Mexico and Chesapeake Bay will likely expand to record levels this summer due to rising rising agricultural runoff in part triggered by large-scale flooding in the Midwest, according to a forecast by a researcher from the University of Michigan.
Nitrogen pollution harming ecosystems and contributing to global warming
(05/15/2008) Nitrogen pollution of the world's oceans is harming marine ecosystems and contributing to global warming, report two reviews published in the journal Science.
Global warming to worsen ocean dead zones, hurt fisheries
(05/01/2008) Warming oceans will worsen oxygen-deficient or hypoxic dead zones, affecting ecosystems and fisheries, warn researchers writing in the journal Science.
Ocean dead zones have nearly quadrupled since 1994
(04/03/2008) Coastal areas worldwide are suffering from over-enrichment of their waters by nitrogen and phosphorus, finds a new study from the World Resources Institute (WRI). This over-enrichment, known as eutrophication, causes numerous environmental problems, eventually devastating coastal environments. In overly nutrient-rich waters phytoplankton, micro- and macroalgae grow to excessive portions; these 'algal blooms' diminish subaquatic vegetation, damage coral reefs, and deplete populations of fish, shellfish, marine mammals, and sea birds. In the worst case scenarios the massive algal blooms form hypoxic or dead zones due to loss of oxygen in the water, essentially condemning the ecosystem.
Corn ethanol is worsening the Gulf dead zone
(03/10/2008) Proposed legislation that will expand corn-ethanol production in the United States will worsen the growing "dead zone" in the Gulf of Mexico and hurt marine fisheries, report researchers writing in the Proceedings of the National Academy of Sciences (PNAS).