Navigation Links
LSU, Yale team study agricultural impact on Mississippi River
Date:1/23/2008

BATON ROUGE According to a study published in Nature by researchers at LSU and Yale University, farming has significantly changed the hydrology and chemistry of the Mississippi River, injecting more carbon dioxide into the river and raising river discharge during the past 50 years.

LSU Professor R. Eugene Turner and graduate student Whitney Broussard, along with their colleagues at Yale, tracked changes in the discharge of water and the concentration of bicarbonate, which forms when carbon dioxide in soil water dissolves rock minerals. Bicarbonate in rivers plays an important, long-term role in absorbing atmospheric carbon dioxide, a greenhouse gas. Oceans then absorb this carbon dioxide, but become more acidic in the process, making it more difficult for organisms to form hard shells a necessary function in coral reefs, for example.

Researchers concluded that liming and farming practices, such as changes in tile drainage, tillage practices and crop type, are most likely responsible for the majority of the increase in water and carbon in the Mississippi River, North Americas largest river.

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.

The research team analyzed 100-year-old data on the Mississippi River warehoused at two New Orleans water treatment plants, and combined it with data on precipitation and water export.

The water quality information we used has been sitting idle for over 50 years in an attic in New Orleans, waiting to be discovered, said Broussard, who is pursuing a doctoral degree in coastal ecology at LSU. I felt like a treasure-hunter when we opened those boxes in that 100-plus degree attic to find those data logs. You never know where your research will take you if youre open to suggestion and serendipity. Turner, distinguished professor of coastal ecology, added, and [where it will take you] if you have the benefits of long-term collaborations of trusting and high-quality academic research groups.

The research team used the data to demonstrate the effects of this excess water on the carbon content of the river, and argue that the additional water in the river is altering the chemistry of the Gulf of Mexico as by increasing the amount of nutrients and pollution the river transports to the Gulf.

Were learning more and more about the far-reaching effects of American agriculture on rivers and lakes. This also means that the agricultural community has an incredible opportunity to influence the natural environment in a positive way, more than any other contemporary enterprise, said Broussard. If we want to clean the water, we have to steward the land with right agriculture.


'/>"/>

Contact: R. Eugene Turner
euturne@lsu.edu
225-578-6454
Louisiana State University
Source:Eurekalert

Related biology news :

1. Diet and lifestyle critical to recovery, says study
2. Scientists study the link between childrens nutrition and adult diseases
3. New Argonne study may shed light on protein-drug interactions
4. Sea otter study reveals striking variability in diets and feeding strategies
5. Study: weight-loss tips differ in African-American, mainstream magazines
6. Study helps explain how allergic reactions are triggered
7. Selective restraints and reduced medication could reduce nursing home falls says 4-year study
8. Study locates cholesterol genes; finds surprises about good, bad cholesterol
9. Study suggests genetic connection between short stature and arthritis
10. Radioactive understudy may aid medical imaging, drug development
11. Surprise -- cholesterol may actually pose benefits, study shows
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/22/2016)... 2016   Acuant , the leading ... has partnered with RightCrowd ® to ... Management, Self-Service Kiosks and Continuous Workforce Assurance. ... functional enhancements to existing physical access control ... with an automated ID verification and authentication ...
(Date:6/16/2016)... , June 16, 2016 ... size is expected to reach USD 1.83 billion ... Grand View Research, Inc. Technological proliferation and increasing ... applications are expected to drive the market growth. ... , The development of advanced multimodal ...
(Date:6/7/2016)...  Syngrafii Inc. and San Antonio Credit Union ... integrating Syngrafii,s patented LongPen™ eSignature "Wet" solution into ... result in greater convenience for SACU members and ... existing document workflow and compliance requirements. ... Highlights: ...
Breaking Biology News(10 mins):
(Date:11/30/2016)... SEATTLE , Nov. 30, 2016  The ... Allen Cell Collection: the first publicly available collection ... stem cells that target key cellular structures with ... Medical Research, these powerful tools are a crucial ... cells to better understand what makes human cells ...
(Date:11/30/2016)... November 2016   Merck , ein ... Unterzeichnung einer Reihe von Vereinbarungen mit Evotec ... AG Screeningleistungen für Mercks Palette genetischer Reagenzien ... auf diese Bibliotheken in Kombination mit Evotecs ... Weg zur Ermittlung und Erforschung neuer Arzneimitteltargets.    ...
(Date:11/30/2016)... Woburn, MA (PRWEB) , ... November 30, 2016 ... ... broadband light sources for advanced technology applications, introduces the 5th generation, ultra-bright, Laser-Driven ... the highly successful Laser-Driven Light Source (LDLS™) technology, the EQ-77 offers higher radiance ...
(Date:11/30/2016)... ... 30, 2016 , ... ProMIS Neurosciences (“ProMIS” or the “Company”), ... today announced that all five of its validated monoclonal antibody (mAb) therapeutic candidates ... prion-like forms of Amyloid beta (Aß) in vitro. , “We previously demonstrated that ...
Breaking Biology Technology: