Posted on Oregon Public Broadcasting (OPB) Nov. 27, 2012 | EarthFix SEATTLE — Rescuing shellfish from the rising acidity in Puget Sound will require a wide-ranging response: Everything from curbing greenhouse gases and controlling water pollution to growing more seaweed and putting restaurant-discarded oyster shells into shallow bays. Those
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First evidence of ocean acidification affecting live marine creatures in the Southern Ocean
Posted on EPOCA: 26 Nov 2012 The shells of marine snails – known as pteropods – living in the seas around Antarctica are being dissolved by ocean acidification according to a new study published this week in the journal Nature Geoscience. These tiny animals are a valuable food source for fish
Extensive dissolution of live pteropods in the Southern Ocean
Posted on EPOCA: 26 Nov 2012 The carbonate chemistry of the surface ocean is rapidly changing with ocean acidification, a result of human activities1. In the upper layers of the Southern Ocean, aragonite—a metastable form of calcium carbonate with rapid dissolution kinetics—may become undersaturated by 2050 (ref. 2). Aragonite undersaturation is
Structural and functional vulnerability to elevated pCO2 in marine benthic communities
Posted on EPOCA: 26 Nov 2012 The effect of elevated pCO2/low pH on marine invertebrate benthic biodiversity, community structure and selected functional responses which underpin ecosystem services (such as community production and calcification) was tested in a medium-term (30 days) mesocosm experiment in June 2010. Standardised intertidal macrobenthic communities, collected (50.3567°N, 4.1277°W)
‘Runaway greenhouse event’ led to world’s largest mass extinction
Finding could shed light on what global warming might trigger: scientist — By MARGARET MUNRO, POSTMEDIA NEWS A massive release of greenhouse gases likely caused the world’s worst extinction, according to an international team that has been poring over the remains. About 95 per cent of Earth’s marine life and