With climate change, no happy clamsTweet
Media Source: Talk of the Nation
Program Name: Science Friday
Show Name: With climate change, no happy clams
Broadcast Year: 2013
Original Link: http://www.sciencefriday.com/segment/06/14/2013/with-climate-change-no-happy-clams.html
About 95 percent of the carbon dioxide released in the atmosphere will eventually end up in the oceans. Thus, the increased concentration of CO2 in the air causes ocean waters to soak up some of that extra carbon. The oceans are becoming slightly more acidic as a result, which has impacts on organisms in the ocean. Since 2009, the owners of oyster farms have observed about a 60 percent reduction in production, which is mainly caused by the increased acidity of ocean waters. Since the beginning of the pre-industrial world, pH of oceans and surface waters throughout the world is changing about .02 pH units per decade, which means a 30 percent increase in the acidity in total. Oysters are not the only organism affected by ocean water acidity. About 50 percent of the organisms in the ocean have a negative impact because of the increasing CO2 and lowering of the pH. About 25 percent seem to have no impact so far, and about 25 percent seem to do well in high CO2 oceans. This means a major shift in the ecosystem, which extends to a seafood security issue.