OREGON STATE UNVERSITY 03/03/16 The U.S. West Coast Shellfish Industry's Perception of and Response to Ocean Acidification. The U.S. west coast (Washington, Oregon, and California) shellfish industry is estimated to directly employ 3,200 people and annually contribute more than $270 million to the region’s economy.
This industry predominantly cultivates Pacific oysters, introduced from Japan to replace the native and over-harvested Olympia oyster. Ocean acidification (OA) has received worldwide attention from researchers, media, and the public as an urgent environmental and economic issue. Increasing amounts of carbon dioxide (CO2) in the atmosphere from fossil fuel combustion, land use change, and other human activities result in increased CO2 being absorbed by the ocean.
By Tom Wittig Developing countries that rely on nourishment from the oceans will soon find their sources of food and way of life threatened, according to an Oceana study released last week.
The report, Ocean-Based Food Security Threatened in a High CO2 World, ranks the top 50 nations most vulnerable to climate change and ocean acidification in the context of their seafood and fish consumption. Not surprisingly, those nations topping the list are among the least responsible for historic emissions of carbon dioxide. The Comoros claimed the dubious distinction of most threatened, followed by Togo, the Cook Islands, Kiribati, and Eritrea. IRD 21/04/15 L'acidification des océans réduit la taille des coquillages marins. ARC CENTRE OF EXCELLENCE 06/08/12 New study helps predict impact of ocean acidification on shellfish. An international study to understand and predict the likely impact of ocean acidification on shellfish and other marine organisms living in seas from the tropics to the poles is published this week in the journal Global Change Biology.
Ocean acidification is occurring because some of the increased carbon dioxide humans are adding to the atmosphere dissolves in the ocean and reacts with water to produce an acid. The results suggest that increased acidity is affecting the size and weight of shells and skeletons, and the trend is widespread across marine species. These animals are an important food source for marine predators such as tropical seabirds and seals as well as being a valuable ingredient in human food production. Consequently, these changes are likely to affect humans and the ocean’s large animals. This study shows, over evolutionary time, animals have adapted to living in environments where calcium carbonate is relatively difficult to obtain by forming lighter skeletons.
CALIFORNIA OCEAN SCIENCE TRUST - 2010 - Is Ocean Acidification Affecting Shellfish. EUROPE 03/05/07 Mussels and Oysters Threatened by Ocean Acidification. Journal of Toxicology and Environmental Health, Part A, 74:424–438, 2011 EFFECTS OF OCEAN ACIDIFICATION ON EARLY LIFE STAGES OF SHRIMP (Pandalus borealis) AND MUSSEL (Mytilus edulis) Mar Drugs. 2010 Aug 11;8(8):2318-39. Impact of ocean acidification on energy metabolism of oyster, Crassostrea gigas.
CNRS 16/03/07 Moules et huîtres menacées par l'acidification des océans. En février dernier, le Groupe d'experts intergouvernemental sur l'évolution du climat (GIEC) notait que le réchauffement de notre planète résultait “très vraisemblablement” du rejet de gaz à effet de serre par les activités humaines et soulignait que les changements climatiques s'accentueraient au cours du 21ème siècle si les émissions étaient maintenues au rythme actuel ou à un rythme supérieur.
Chaque jour, plus de 25 millions de tonnes de gaz carbonique se combinent avec l'eau de mer, la rendant plus acide. Le site d'actualité DAILY CLIMATE. SEAFOOD SOURCE 28/12/10 Ocean acidification takes toll on Pacific oysters. Page Not Found We're sorry, the page you requested cannot be found.
Please use the Quick Links below to find the page you are looking for: EPOCA 24/12/10 Elevated level of carbon dioxide affects metabolism and shell formation in oysters Crassostrea virginica. Biogeosciences Discuss., 7, 2927–2947, 2010 Effect of ocean acidification on the early life stages of the blue mussel (Mytilus e. 20MINUTES 03/12/10 Les moules et les crevettes victimes du réchauffement climatique. LE FIGARO 02/05/12 L'acidification des océans nuit à la production des huîtres. Une étude menée dans le Pacifique établit pour la première fois en milieu naturel le lien entre acidification et mortalité des naissains.
On connaissait les expériences menées en laboratoire, mais c'est la première fois que des chercheurs réussissent à montrer en milieu naturel l'effet néfaste de l'acidification des océans sur les huîtres. C'est ce que révèle une étude publiée dans la revue Limnology and Oceanography. L'alerte remonte à 2007. Dans une des grandes écloseries d'huîtres de l'Oregon (États-Unis), fournissant les ostréiculteurs de la côte du Pacifique, les naissains ont commencé à dépérir.
Les millions de bébés huîtres Crassostrea gigas, une fois plongés dans la mer, mouraient les uns après les autres. Le responsable: le CO2. SCIENCE DAILY 11/04/12 Ocean Acidification Linked to Larval Oyster Failure. Researchers at Oregon State University have definitively linked an increase in ocean acidification to the collapse of oyster seed production at a commercial oyster hatchery in Oregon, where larval growth had declined to a level considered by the owners to be "non-economically viable.
" A study by the researchers found that elevated seawater carbon dioxide (CO2) levels, resulting in more corrosive ocean water, inhibited the larval oysters from developing their shells and growing at a pace that would make commercial production cost-effective. As atmospheric CO2 levels continue to rise, this may serve as the proverbial canary in the coal mine for other ocean acidification impacts on shellfish, the scientists say. Results of the research have just been published in the journal, Limnology and Oceanography. Barton sent samples to OSU and the National Oceanic and Atmospheric Administration's Pacific Marine Environmental Laboratory for analysis. 4th International Oyster Symposium, 15 – 18 September 2011, Hobart, Tasmania. - Predicting the physiological response of oysters. Wright, J., Ross, P., Parker, L. and O'Connor, W., 2011.
Predicting the physiological response of oysters to climate change. Presentation given at the 4th International Oyster Symposium, 15 – 18 September 2011, Hobart, Tasmania. Summary The earth’s oceans are acidifying and warming with potentially devastating consequences to marine ecosystems. PRIFYSGOL BANGOR UNIVERSITY 11/05/12 Researchers meet in Ireland to discuss impacts of climate change to Irish Sea shellfisherie. SUSFISH researchers from Wales and Ireland recently met at University College Cork to discuss the impacts of climate change to commercial shellfish productivity in the Irish Sea.
Bangor University is leading this collaborative project, funded by the European Regional Development Fund (ERDF), which brings together experts from Bangor, Aberystwyth and Swansea Universities in Wales and the University College Cork in Ireland. Over the course of the meeting, researchers discussed current findings on a range of topics including disease status and population genetics of cockles, clams, mussels and crabs; effects of ocean acidification and warming to mussel and crab physiology and health; the potential of emerging disease in shellfish; larval dispersal across the Irish Sea and the socioeconomics of the shellfisheries across the region.
Dr. SUSFISH aims to produce guidelines for future fisheries management and policy of the shellfish industry in Ireland & Wales for the next 50-100 years.