Shell-shocked: How different creatures deal with an acidifying ocean

To survive in the ocean, soft-bodied organisms must possess one of five traits: big teeth, toxic flesh, invisibility, quickness or a hard shell. Most marine organisms that employ the latter, called calcifiers, build their hard shells from the mineral calcium carbonate. However, increasing atmospheric carbon dioxide levels are making the oceans more acidic — which, in turn, is reducing the concentration of carbonate ions dissolved in seawater that organisms use to build their protective shells and skeletons. Calcifying marine organisms — such as clams, crabs, corals and conchs — may soon find themselves short on building material.

However, a recent set of experiments suggests that the ocean acidification story is more complex than first thought. Whereas some marine calcifiers reared under the elevated carbon dioxide levels responded very negatively, not all of the organisms suffered in the acidified seawater. Some, in fact, appeared to benefit from it.

Justin B. Ries, EARTH magazine, 10 March 2010. Full article.

0 Responses to “Shell-shocked: How different creatures deal with an acidifying ocean”



  1. Leave a Comment

Leave a Reply




				
  • Search

  • Categories

  • Tags

  • Post Date

Subscribe to the RSS feed

Follow AnneMarin on Twitter

Blog Stats

  • 1,409,070 hits

OA-ICC HIGHLIGHTS

Ocean acidification in the IPCC AR5 WG II

OUP book


%d bloggers like this: