Navigation Links
Texas A&M oceanographer receives $3.7 million grant to study Gulf dead zone
Date:10/20/2009

Oceanographer Steve DiMarco of Texas A&M University, a leading authority on the Gulf of Mexico's "dead zone," and his team of researchers have been awarded $725,467 for the first year of a five-year, $3.72 million project that seeks to better understand and predict where and when the dead zone will happen each year. This new project builds on six prior years of funding.

The Northern Gulf of Mexico Ecosystems and Hypoxia Assessment Program of the National Oceanic and Atmospheric Administration (NOAA) recently announced first-year funding for a new study under DiMarco titled "Mechanisms Controlling Hypoxia: Integrated Causal Modeling," which is expected to continue for the next five years.

Dead zones, or hypoxia, occur when oxygen in water drops below 2 milligrams per liter. Severe hypoxia levels can result in fish kills and adversely affect many types of marine life.

DiMarco and his team have examined dead zones off the Louisiana and Texas coasts to track the size and frequency of these occurrences and, more importantly, identify key factors that contribute to them.

The official size of the dead zone found in 2008 off the coast of Louisiana, as measured by a group of investigators in Louisiana, was 7,988 square miles, the second largest since measurements began in 1985. This represents a land area greater than the state of Massachusetts.

The 2009 dead zone was predicted to be among the largest ever recorded, but actual observations showed it instead to be the fourth smallest on record. The predictions were based largely on the amount of nutrients entering the Gulf via the Mississippi River. The low levels of oxygen in dead zones are caused primarily by nutrient pollution from farm fertilizers and other sources as they empty into rivers and eventually into the Gulf of Mexico.

DiMarco and colleagues have found, however, that other factors such as wind and current reversals, low waves, summer heat and upwelling from coastal marshes and estuaries also contribute to hypoxia.

"This year's forecast, which did not do a very good job of predicting the actual size of the dead zone, underscores the importance of our research at Texas A&M," DiMarco said. "Unraveling the complex system of processes that create dead zones will lead us in the direction of better predictions. This has always been the overarching premise of our team's research. We also look forward to the continuation of our research efforts and working with other researchers around the Gulf on this important issue."

DiMarco is program manager and principal investigator for this new round of funding from NOAA, of which Texas A&M and Texas A&M University at Galveston will receive $501,398 this year and $2.82 million over five years, pending Congressional approval. Collaborating researchers at the Louisiana Universities Marine Consortium and Virginia Institute for Marine Sciences will receive the remaining funds.

Five other oceanography faculty and one Galveston faculty member are co-principal investigators for the study. Other principal investigators are from Dalhousie University, Coastal Carolina University, Louisiana State University, Louisiana Universities Marine Consortium and Virginia Institute for Marine Sciences.

DiMarco's earlier hypoxia studies were funded by NOAA from 2003 through 2009. With this most recent funding, the researchers plan to continue pursuing their quest to develop models that can predict when and where hypoxic, or dead, zones may occur.

Together with Oceanography Professor Tom Bianchi, DiMarco discovered a Texas-created dead zone area off the Texas coast in August 2007, a result of unusually heavy rains that poured water into the Brazos River. This first proven dead zone area that originated from Texas rivers was created where the water emptied into the Gulf.

In completing 16 research cruises and collaboratively sharing data with other programs, the Texas A&M researchers have already collected tens of thousands of data points through their hypoxia studies. More than 50 Texas A&M graduate students have participated in the project, logging more than 1,000 student days at sea. The work has also led to collaborative studies of hypoxia in other regions of the world, specifically the Yangtze and Huanghe (Yellow) rivers in China.


'/>"/>

Contact: Steve DiMarco
sdimarco@tamu.edu
Texas A&M University
Source:Eurekalert

Related biology news :

1. Texas researchers and educators head for Antarctica
2. Ceres and Texas A&M to develop and market high-biomass sorghum for biofuels
3. Gulf of Mexico dead zone to be studied by University of Texas at Austin marine scientists
4. UT Southwestern scientist honored among best in Texas research
5. Rices West honored as one of Texas best researchers
6. Texas Hospital nations first to use large-scale cocoon strategy against whooping cough
7. Texas A&M testing oral contraceptives for animals
8. Texas A&M scientists say early Americans arrived earlier
9. Researchers confirm dead zone off Texas coast since 1985
10. Underwater microscope helps prevent shellfish poisoning along Gulf Coast of Texas
11. UTMB inventions win University of Texas System commercialization awards
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/21/2016)... British Columbia , June 21, 2016 /PRNewswire/ ... appointed to the new role of principal product ... been named the director of customer development. Both ... NuData,s chief technical officer. The moves reflect NuData,s ... teams in response to high customer demand and ...
(Date:6/15/2016)... , June 15, 2016 ... market report titled "Gesture Recognition Market by Application Market - Global ... 2016 - 2024". According to the report, the  global ... billion in 2015 and is estimated to grow ... 48.56 billion by 2024.  Increasing application ...
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. ... a business relationship that includes integrating Syngrafii,s patented ... branch project. This collaboration will result in greater ... the credit union, while maintaining existing document workflow ... http://photos.prnewswire.com/prnh/20160606/375871LOGO ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... June 23, 2016 , ... UAS ... the launch of their brand, UP4™ Probiotics, into Target stores nationwide. The company, ... proud to add Target to its list of well-respected retailers. This list includes ...
(Date:6/23/2016)... June 23, 2016 A person commits a crime, ... scene to track the criminal down. An outbreak ... and Drug Administration (FDA) uses DNA evidence to track down ... Sound far-fetched? It,s not. The FDA has increasingly used ... investigations of foodborne illnesses. Put as simply as possible, whole ...
(Date:6/23/2016)... SANTA MONICA, Calif. , June 23, 2016  The Prostate Cancer ... to pioneer increasingly precise treatments and faster cures for prostate cancer. Members of ... 77 institutions across 15 countries. Read More About the ... ... ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... launch of the Supplyframe Design Lab . Located in Pasadena, Calif., the ... future of how hardware projects are designed, built and brought to market. , ...
Breaking Biology Technology: