Navigation Links
Agriculture is changing the chemistry of the Mississippi River
Date:1/29/2008

New Haven, Conn.Midwestern farming has introduced the equivalent of five Connecticut Rivers into the Mississippi River over the past 50 years and is adding more carbon dioxide annually into its waters, according to a study published in Nature by researchers at Yale and Louisiana State universities.

Its like the discovery of a new large river being piped out of the corn belt, said Pete Raymond, lead author of the study and associate professor of ecosystem ecology at the Yale School of Forestry & Environmental Studies. Agricultural practices have significantly changed the hydrology and chemistry of the Mississippi River.

The researchers tracked changes in the levels of water and bicarbonate, which forms when carbon dioxide in soil water dissolves rock minerals. Bicarbonate plays an important, long-term role in absorbing atmospheric carbon dioxide, a greenhouse gas. Oceans then absorb the excess carbon dioxide and become more acidic in the process. Ocean acidification makes it more difficult for organisms to form hard shells in coral reefs, said R. Eugene Turner, a co-author of the study and a professor at the Coastal Ecology Institute at Louisiana State University.

The researchers concluded that farming practices, such as liming, changes in tile drainage and crop type and rotation, are responsible for the majority of the increase in water and carbon dioxide in the Mississippi River, which is North Americas largest river.

Raymond said that the research team analyzed 100-year-old data on the Mississippi River, warehoused at two New Orleans water treatment plants, along with data on precipitation and water export. A notable finding is that changes in farming practices are more important than changes in precipitation to the increase in water being discharged into the river, he said.

The researchers used their data to demonstrate the effects of excess water on the carbon content of the river, and to argue that nutrients and pollution in the water are altering the chemistry of the Gulf of Mexico.


'/>"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University
Source:Eurekalert  

Related biology news :

1. Agriculture experts meet in Beijing to examine impacts of food prices and climate change on farmers
2. Emphasizing the precision in precision agriculture
3. Changing environment organizes genetic structure
4. Global deal fuels QUTs world-changing research
5. Changing the global dietary environment
6. Story ideas from the Journal of Biological Chemistry
7. Biocapture surfaces produced for study of brain chemistry
8. Story ideas from the Journal of Biological Chemistry
9. Going live with click chemistry
10. Biogeochemistry -- A window into the Earths ecological health
11. K-State chemistry professor to receive Masao Horiba award
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Agriculture is changing the chemistry of the Mississippi River
(Date:10/4/2017)... Oct. 4, 2017  GCE Solutions, a global clinical research organization ... document anonymization solution on October 4, 2017. Shadow is designed to ... comply with policy 0070 of the European Medicines Agency (EMA) in ... ... ...
(Date:7/20/2017)... , July 20, 2017 Delta (NYSE: DAL ) ... any Delta aircraft at Reagan Washington National Airport (DCA). ... Delta launches biometrics to board ... Delta,s biometric boarding ... Club is now integrated into the boarding process to allow eligible ...
(Date:6/14/2017)... IBM ) is introducing several innovative partner startups at ... between startups and global businesses, taking place in ... startups will showcase the solutions they have built with IBM ... France is one of the most ... increase in the number of startups created between 2012 and ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... announced today that they have entered into a multiyear collaboration to identify and ... researchers with additional tools for gene editing across all applications. , Under the ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... launched Rosalind™, the first-ever genomics analysis platform specifically designed for life science ... in honor of pioneering researcher Rosalind Franklin, who made a major contribution ...
(Date:10/11/2017)... ... 11, 2017 , ... ComplianceOnline’s Medical Device Summit is back for its 4th ... in San Francisco, CA. The Summit brings together current and former FDA office bearers, ... and government officials from around the world to address key issues in device compliance, ...
(Date:10/11/2017)... ... 2017 , ... Disappearing forests and increased emissions are the main causes of ... year. Especially those living in larger cities are affected by air pollution related diseases. ... most pollution-affected countries globally - decided to take action. , “I knew I had ...
Breaking Biology Technology: