UNC-CH marine scientist says hurricane could be catastrophic for Pamlico Sound

CHAPEL HILL - Water testing and a flight over North Carolina's Pamlico Sound - the nation's largest lagoonal estuary - provided new evidence this week that the catastrophic flooding and runoff following Hurricane Floyd will damage the sound and connected waters.

Both commercial and recreational fisheries could be hurt along much of the southeastern U.S. coast between Virginia and northern Florida, according to a University of North Carolina at Chapel Hill marine scientist.

The first direct assessment of potentially adverse marine life conditions took place Wednesday (Oct. 6). During the survey, researchers observed low oxygen in the sound and strikingly different-colored water.

"The chocolate-colored sediment plume associated with flood discharge from Floyd has now extended into Pamlico Sound and also is making its way down Core Sound," said Dr. Hans Paerl, Kenan professor of marine sciences.

"We found low oxygen 'dead zone' conditions in bottom waters in a region of the sound under the influence of the sediment plume," Paerl said. "This is obviously not a good development. In addition, nutrient enrichment associated with the plume has the potential for triggering fall and early spring phytoplankton blooms which could further fuel the low-oxygen conditions."

If the excessive freshwater discharge continues into next spring, scientists should detect a low-density freshwater "lens" covering denser saltwater, much like oil floating on vinegar in unshaken salad dressing, he said.

Resulting isolation of salty bottom water prevents oxygen replenishment from the atmosphere, leading to development of the oxygen-deficient dead zone. Algal blooms can exacerbate the condition, because decaying blooms will ultimately sink to the bottom, further contributing to oxygen depletion. Bottom water with little or no dissolved oxygen would prove uninhabitable to finfish and shellfish.


Contact: David Williamson
University of North Carolina at Chapel Hill

Page: 1 2 3

Related biology news :

1. UNC-CH study indicates special vaccines could prevent insulin-dependent diabetes
2. Feds give $16 million to UNC-CH scientists studying waste site problems
3. UNC-CH study offers new evidence that garlic protects against cancers
4. UNC-CH researchers to study social effects of N.C. hurricane
5. UNC-CH experiments reveal new pen can disinfect water
6. UNC-CH bus brings mobile lab, high-tech science focus to underserved N.C. schools
7. UNC-CH researchers to comb N.C. mountains for iron problem chiefly affecting Scots, Irish
8. UNC-CH biologists identify new order of marine fungi
9. UNC-CH scientists create worlds smallest pieces of ice
10. UNC-CH scientist finds smallest number of genes needed for organisms survival
11. UNC-CH scientist encourages all to watch PBS series on microbes

Post Your Comments:

(Date:8/29/2019)... SAN DIEGO (PRWEB) , ... August 28, 2019 , ... ... The San Diego-based team building and cooking events company has seen record growth ... Teams, such as Amazon, ServiceNow, Vistage and Illumina, have all visited the company’s ...
(Date:8/27/2019)... ... , ... Shoreline Biome , a microbiome research company that develops tools ... its CEO and Karen Woodward as its VP of Business Development. , These ... products and expand the company’s sales worldwide. , Prior to joining Shoreline Biome, Bill ...
(Date:8/27/2019)... ... August 27, 2019 , ... Ambry Genetics ... improve genetic testing guidelines. In the largest cohort study of its kind, Ambry ... at-risk patients. , Clinicians use guidelines to inform decisions about which patients ...
Breaking Biology News(10 mins):
(Date:8/15/2019)... ... August 15, 2019 , ... PathSensors ... Lawrence is a member of the Institute of Food Technologists (IFT) Board of ... Advisory Board, Joint Institute for Food Safety and Applied Nutrition (JIFSAN) Advisory Council ...
(Date:8/8/2019)... ... August 08, 2019 , ... Inference Solutions , ... organizations, today announced that the company’s Studio Intelligent Virtual Agent (IVA) platform earned ... Inference will officially accept the award at Frost & Sullivan’s annual Excellence in ...
(Date:8/6/2019)... (PRWEB) , ... August 06, 2019 , ... ... tools for characterizing microbiome populations down to the strain level, has announced partnerships ... kits and other products to companies and research organizations in Australia, Benelux, Indonesia, ...
(Date:8/4/2019)... ... August 02, 2019 , ... Cirtec Medical Corporation, a strategic outsourcing partner for ... has begun construction on a 30,000 sq. ft. manufacturing facility in the Coyol ... , The facility, which is expected to be fully operational by the end of ...
Breaking Biology Technology:
Cached News: