The relationship between the size of the hypoxic zone in July (km2) and the May nitrate+nitrite N loading (kg N) to the Gulf of Mexico each year. A linear regression of the data is shown. The individual data points are in four chronologically-sequenced groups separated from each other when the data fall below the slope, […]
Reporting by Tim Cocks; editing by Ralph Boulton ABIDJAN (Reuters) – Human beings are flushing millions of tonnes of solid waste into rivers and oceans every day, poisoning marine life and spreading diseases that kill millions of children annually, the U.N. said on Monday. “The sheer scale of dirty water means more people now die […]
By Rebecca Lindsey and Norman Kuring Phytoplankton swirled across the Arabian Sea on February 18, 2010, drawn into thin green ribbons by turbulent eddies. The bloom stretches from the shores of Pakistan (top) to the coast of Oman (lower left). The washed out appearance at the upper left of the image is due to sunglint, […]
ScienceDaily (Mar. 12, 2010) — The increased frequency and intensity of oxygen-deprived “dead zones” along the world’s coasts can negatively impact environmental conditions in far more than just local waters. In the March 12 edition of the journal Science, University of Maryland Center for Environmental Science oceanographer Dr. Lou Codispoti explains that the increased amount […]
By James Owen in Stockholm, for National Geographic News Published March 5, 2010 This story is part of a special series that explores the global water crisis. For more clean water news, photos, and information, visit National Geographic’s Freshwater Web site. … An explosion of microscopic algae called phytoplankton has inundated the Baltic’s sensitive waters, […]
Period in which the symptoms of eutrophication and hypoxia / anoxia began in developed countries and how the symptoms are shifted to more recent years for developing countries (modified by N. N. Rabalais from Galloway and Cowling, 2002; Boesch, 2002). The occurrence of hypoxia in coastal areas is increasing, and the trend is consistent with […]
By Les Blumenthal, McClatchy Newspapers – Sun Mar 7, 12:01 pm ET WASHINGTON — Lower levels of oxygen in the Earth’s oceans, particularly off the United States’ Pacific Northwest coast, could be another sign of fundamental changes linked to global climate change, scientists say. They warn that the oceans’ complex undersea ecosystems and fragile food […]
Global pattern in the development of coastal hypoxia. Each red dot represents a documented case related to human activities. Number of hypoxic sites is cumulative through time. Black lines represent continental shelf areas threatened with hypoxia from expansion of OMZ and upwelling. Modified from Díaz and Rosenberg (2008) and Levin et al. (2009a). Over the […]
A review of all available ocean data records concludes that the low-oxygen events which have plagued the Pacific Northwest coast since 2002 are unprecedented in the five decades prior to that, and may well be linked to the stronger, persistent winds that are expected to occur with global warming. In a new study to be […]
By MARISSA CALLIGEROSJanuary 12, 2010 – 1:54PM Potentially deadly marine stingers may be blooming in unprecedented numbers off the Queensland coast, as far south as Moreton Bay. But a request by a world-leading expert to study the phenomenon has been denied by the Australian Research Council, despite mounting evidence overseas and a series of recent […]
