|
A recent article, posted on MSNBC on April 22nd of this year, suggests that officials are neglecting to react to the global carbon budget as seawater acidity rises. Research is lacking needed funds, perhaps because the only solution to this problem is to stop burning fossil fuels. As the shell fish population decreases and other affected ecosystems respond, maybe we will spread the message that we need to act now.
The Chemistry
The basic building blocks of shell fish and related organic mater in our oceans (such as coral) is the carbonate ion. This ion is balanced in proportion to the hydrogenated bicarbonate and carbonic acid ions at a given pH. Any fluctuation in pH shifts the balance from what living organisms need into a hydrogenated / acidic-rich environment where the carbonate ion forms complexes with hydrogen. Small fluctuations in acidity have dramatic effects on living organisms that rely on the carbonate ion.
History
Since the industrial revolution, we have seen unsurpassed rates of change in oceanic acidity. No fluxes of oceanic pH of this magnitude have occurred over the past 21 million years. Models also predict that the magnitude to which oceanic pH drops over this century will more than triple the observed drop in pH levels over the past century.
Observation
In a controlled environment like what environmental conditions will be a century from now, shell fish are growing 41% smaller than their counterparts living in present day conditions. These drastic changes will without a doubt affect coral growth, shellfish growth, and yields from fishing vessels. This direct response doesn't even consider compounded decreases in primary production which decreases the ocean's ability to absorb carbon dioxide. Food chains will also be affected, ultimately decreasing the organic portion of our ocean and allowing for ocean deserts to expand and consume a very valuable natural resource.
Resources:
http://www.msnbc.msn.com/id/36713115/ns/us_news-environment/
http://www.corrosionsource.com/technicallibrary/corrdoctors/Modules/Seawater/Ions.htm
http://www.ocean-acidification.net/FAQacidity.html
http://en.wikipedia.org/wiki/Carbonate
|
"Almost" Good Answers: