Showing posts with label acidification. Show all posts
Showing posts with label acidification. Show all posts

Monday, November 05, 2007

Mussels, oysters, and clams to dissolve by 2100?

Acid oceans may be corrosive enough to dissolve the shells of mussels, oysters, and clams in some areas by 2100. This truly scary news sounds like Chicken Little at her worst, but this warning comes from scientist Carol Turley, from Plymouth Marine Laboratory.

OK, this ocean acidification scare is getting serious now. Dissolving shellfish shells? Really?

What you may not know is that building a calcium carbonate shell can be difficult in the ocean below the carbonate compensation depth, since calcium carbonate tends to dissolve in seawater.

Fortunately for shellfish lovers, the compensation depth is currently in deep water everywhere. But rising CO2 has already influenced carbonate compensation and it will get worse in the future. It is now a realistic concern that animals with carbonate shells may see their shells dissolve in shallow water in the future.

Ouch, sounds like that would hurt.

Hat tip: Jeremy Jacquot at treehugger.com

Monday, October 29, 2007

Acid oceans threaten ocean life

It's the little known CO2 problem that is real, scary and already happening. It's acid oceans, brought to you by human CO2 production.

Our oceans are becomming more acid, and this problem threatens to dissolve corals and other important ocean animals, and it looks like it's already happening. YIKES! The acid levels don't sound too bad, in the language of chemistry. Just a few tenths of a pH unit--doesn't sound too bad, right?

But ask a coral and you might get a different answer. If there were such a thing, newspapers written for corals would be screaming bloody murder. Or maybe screaming "acid threatens to dissolve you and your family!" Let's think like a coral and get worried about acid oceans.

Out of sight, out of mind? Or will we rally to the cause and save our oceans from the acid plague?