Regardless of global warming, rising CO2 levels threaten marine life

CHAMPAIGN, Ill. -- Like a piece of chalk dissolving in vinegar, marine life with hard shells is in danger of being dissolved by increasing acidity in the oceans.

Ocean acidity is rising as sea water absorbs more carbon dioxide released into the atmosphere from power plants and automobiles. The higher acidity threatens marine life, including corals and shellfish, which may become extinct later this century from the chemical effects of carbon dioxide, even if the planet warms less than expected.

A new study by University of Illinois atmospheric scientist Atul Jain, graduate student Long Cao and Carnegie Institution scientist Ken Caldeira suggests that future changes in ocean acidification are largely independent of climate change. The researchers report their findings in a paper accepted for publication in the journal Geophysical Research Letters, and posted on its Web site.

"Before our study, there was speculation in the academic community that climate change would have a big impact on ocean acidity," Jain said. "We found no such impact."

In previous studies, increasing levels of carbon dioxide in the atmosphere led to a reduction in ocean pH and carbonate ions, both of which damage marine ecosystems. What had not been studied before was how climate change, in concert with higher concentrations of carbon dioxide, would affect ocean chemistry and biology.

To investigate changes in ocean chemistry that could result from higher temperatures and carbon-dioxide concentrations, the researchers used an Earth-system model called the Integrated Science Assessment Model. Developed by Jain and his graduate students, the model includes complex physical and chemical interactions among carbon-dioxide emissions, climate change, and carbon-dioxide uptake by oceans and terrestrial ecosystems.

The ocean-surface pH has been reduced by about 0.1 during the past two centuries. Using ISAM, the researchers found ocean pH would decline a total of 0.31 by the

Contact: James E. Kloeppel
University of Illinois at Urbana-Champaign

Page: 1 2 3

Related biology news :

1. Revolutionary global environment fund announces $50M expansion
2. 1,000-year-old Arctic ponds disappearing due to global warming
3. Desertification: UN experts prescribe global policy overhaul to avoid looming mass migrations
4. Scientists call for global push to advance research in synthetic biology
5. Northern forests less effective than tropical forests in reducing global warming
6. UN issues analysis of global investors sustainable energy gold rush
7. Gannet population under threat from global warming
8. Yale journal examines the global impact of cities
9. Researchers examine carbon capture and storage to combat global warming
10. QUT microgravity tower attracts global scientific community
11. Study warns climate change and deforestation will lead to declines in global bird diversity

Post Your Comments:

(Date:10/29/2015)... 29, 2015 Daon, a global leader in ... released a new version of its IdentityX Platform ... North America have already installed IdentityX v4.0 ... a FIDO UAF certified server component as ... activate FIDO features. These customers include some of the ...
(Date:10/27/2015)... 2015 In the present market scenario, security ... various industry verticals such as banking, healthcare, defense, electronic ... demand for secure & simplified access control and growing ... hacking of bank accounts, misuse of users, , and ... PC,s, laptops, and smartphones are expected to provide potential ...
(Date:10/26/2015)... 26, 2015  Delta ID Inc., a company focused ... and PC devices, announced its ActiveIRIS® technology powers the ... F-02H launched by NTT DOCOMO, INC in ... second smartphone to include iris recognition technology, after a ... F-04G in May 2015, world,s first smartphone to have ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... --> --> ... by Transparency Market Research, the global non-invasive prenatal testing ... 17.5% during the period between 2014 and 2022. The ... Analysis, Size, Volume, Share, Growth, Trends and Forecast 2014 ... to reach a valuation of US$2.38 bn by 2022. ...
(Date:11/24/2015)... , Nov. 24, 2015 /PRNewswire/ - Aeterna Zentaris ... today that the remaining 11,000 post-share consolidation (or ... Warrants (the "Series B Warrants") subject to the ... on November 23, 2015, which will result in ... giving effect to the issuance of such shares, ...
(Date:11/24/2015)... Switzerland (PRWEB) , ... November 24, 2015 , ... ... plant and the environment are paramount. Insertion points for in-line sensors can represent ... has developed the InTrac 781/784 series of retractable sensor housings , which ...
(Date:11/24/2015)... ... November 24, 2015 , ... Creation Technologies ... being named to Deloitte's 2015 Technology Fast 500 list of the fastest growing ... a FDA-cleared, Class II medical device that speeds up orthodontic tooth movement by ...
Breaking Biology Technology:
Cached News: