Scientists argue against conclusion that bacteria consumed Deepwater Horizon methane

ScienceDaily (May 26, 2011) — A technical comment published in the May 27 edition of the journal Science casts doubt on a widely publicized study that concluded that a bacterial bloom in the Gulf of Mexico consumed the methane discharged from the Deepwater Horizon well. The debate has implications for the Gulf of Mexico ecosystem […]

Greenhouse ocean study offers warning for future

Contact: David Ellis (email)websiteMedia OfficerMarketing & Strategic CommunicationsThe University of AdelaideBusiness: +61 8 8303 5414Mobile: +61 421 612 762 The mass extinction of marine life in our oceans during prehistoric times is a warning that the Earth will see such an extinction again because of high levels of greenhouse gases, according to new research by […]

Sewage-derived nitrogen increasingly polluting Caribbean ecosystems

Contact: Maggie Barrettbarrett@american.edu202-885-5951American University (American University) A study published in the journal Global Change Biology finds that while fertilizer has been the dominant source of nitrogen pollution in Caribbean coastal ecosystems for the past 50 years, such pollution is on the decline. But now, sewage-derived nitrogen is increasingly becoming the top source of such pollution […]

Graph of the Day: Exceedance of Critical Eutrophication Loads by Nitrogen Deposition, 2010

Exceedance of critical loads for eutrophication by nitrogen deposition in 2010 under current European legislation (courtesy of CCE, 2008). Nitrogen deposition remains a threat to biodiversity across large areas of Europe (CCE, 2008). This concern is reflected in the incorporation of an indicator for nitrogen deposition under the Streamlining European Biodiversity Indicators 2010 (SEBI, 2010) […]

Algae and bacteria hogged oxygen after ancient mass extinction, slowing recovery of marine life: Stanford researchers

After the biggest mass extinction in Earth’s history – 250 million years ago – algae and bacteria in the ocean rebounded so fast that they consumed virtually all the oxygen in the sea, slowing the recovery of the rest of marine animals for several million years. BY LOUIS BERGERONMarch 24, 2011 A mass extinction is […]

Graph of the Day: Planetary Boundaries and Status of the Phosphorus Cycle, 2010

Planetary boundaries and current status of the phosphorus (P) cycle. (A) Planetary boundary and current status for P input to freshwaters from terrestrial ecosystems, Tg y–1. (B) Planetary boundary and current status for P input to terrestrial soils, Tg y–1. (C) Planetary boundary and current status for P mass in terrestrial soils, Tg. In each […]

Global warming ‘may increase water-borne diseases’

WASHINGTON (AFP) – Climate change could increase exposure to water-borne diseases originating in oceans, lakes and coastal ecosystems, and the impact could be felt within 10 years, US scientists told a conference in Washington on Saturday. Several studies have shown that shifts brought about by climate change make ocean and freshwater environments more susceptible to […]

Study finds massive flux of gaseous hydrocarbons, in addition to liquid oil, at BP well blowout in Gulf

Paper has implications for oxygen depletion, provides photographic evidence of plumes By Sam Fahmy, sfahmy@uga.eduFeb 13, 2011, 13:04 Athens, Ga. – A new University of Georgia study that is the first to examine comprehensively the magnitude of hydrocarbon gases released during the Deepwater Horizon Gulf of Mexico oil discharge has found that up to 500,000 […]

Toxic blob drifting in Gulf mystifies scientists

By Kate SpinnerThursday, February 3, 2011 at 1:00 a.m. From a distance the toxic goo looks like oil, but up close it smells like rotten eggs and wiggles like jelly. Scientists have no idea what it is or how it wound up in the northern Gulf of Mexico, near Perdido Pass. Just off the Florida […]

Image of the Day: Queensland Flood Plume Hits Great Barrier Reef

By James Mitchell Crow 18 January 2011 The floods that have devastated swathes of southern Queensland are beginning to perturb one of the world’s largest World Heritage Sites, the Great Barrier Reef, scientists in Australia say. Southern parts of the reef, which extends more than 2,000 kilometres along the Queensland coast in northeastern Australia, are […]

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