HOME >> BIOLOGY >> NEWS
Black water turns the tide on Florida coral

In early 2002, a patch of "black water" spanning over 60 miles in diameter formed off southwestern Florida and contributed to severe coral reef stress and death in the Florida Keys, according to results published from research funded by NASA, the U.S. Environmental Protection Agency and the National Oceanic and Atmospheric Administration (NOAA). The "black water" contained a high abundance of toxic and non-toxic microscopic plants.

Chuanmin Hu and other colleagues at the Institute for Marine Remote Sensing of the University of South Florida (USF), St. Petersburg, Fla., and colleagues from the Florida Fish and Wildlife Conservation Commission (FFWCC) and the University of Georgia, co-authored an article on this phenomenon that appeared as the cover story of a recent issue of the American Geophysical Union's Geophysical Research Letters.

"The water appeared black in satellite imagery because the concentration of the microscopic plants and other dissolved matters were high," Hu said. Because plants and dissolved matter absorb sunlight, they reduce the amount of light normally reflected from the ocean.

When a red-tide bloom occurs the water takes on various hues of red or brown. While not all microscopic plants contribute to red tides, the darker hue created by both the plankton and the harmful algal blooms made the water appear black when seen from the satellite.

When Hu and his colleagues examined the data collected by divers from the dark water area in the Florida Keys, they discovered a 70 percent decrease in stony coral cover, a 40 percent reduction of coral species, and a near-elimination of sponge colonies at two reef sites after the dark water passed. By examining satellite images and field survey data, the authors concluded that the coral reef ecosystem was stressed by microscopic organisms and toxins contained in the dark water.

The "black water" event caused alarm among local fishermen, divers, and the public, as the
'"/>

Contact: Rob Gutro
rgutro@pop900.gsfc.nasa.gov
301-286-4044
NASA/Goddard Space Flight Center
21-Apr-2003


Page: 1 2 3

Related biology news :

1. Black raspberries a potentially powerful agent in fight against colon cancer
2. Black raspberries show multiple defenses in thwarting cancer
3. UCSFs Elizabeth Blackburn Receives Two Major Science Awards
4. Could A Nasal Vaccine Finally Get Rid Of The Black Death?
5. Jefferson Scientists Use Gene Repair Technique To Change Albino Mice Cells To Black
6. Blacks Environmental Concerns Equal/Exceed Whites
7. New Arizona State center brings science to policy on issues of water resources and urban growth
8. Posters highlight water, energy and other natural resource research
9. Wastewater could treat itself, power city
10. Byproduct of water-disinfection process found to be highly toxic
11. Sandia experiments may reduce possibility of future water wars

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/21/2019)... ... May 20, 2019 , ... Dr. David Greene , ... The documentary, Stem Cell Therapy: Biotechnology to the Rescue, was produced by Award Winning ... Greene was interviewed in regards to the safety of the procedures along with the ...
(Date:5/21/2019)... Pa. (PRWEB) , ... May 20, 2019 , ... ... for the health care field, today announced a 96.15% pass rate for first-time ... of 2019. This surpasses the national average of 76.43% by nearly 20 points. ...
(Date:5/16/2019)... (PRWEB) , ... May 16, 2019 , ... In a ... and Technology in Rockville, Maryland, March 18-19 of this year, Asymmetrex founder ... the feasibility of standards for counting therapeutic adult tissue stem cells. Many of ...
Breaking Biology News(10 mins):
(Date:4/18/2019)... ... April 18, 2019 , ... Taking a ... includes a chemical engineer at Worcester Polytechnic Institute (WPI) has developed a novel ... possible to manufacture isobutanol and other biofuels more economically. , Isobutanol, like ethanol, ...
(Date:4/16/2019)... ANTONIO (PRWEB) , ... April 16, 2019 , ... ... human identification systems, applications, and technology, today announced that Bank South Pacific (BSP), ... a competitive RFP process. The bank awarded Fulcrum a contract to deliver a ...
(Date:4/12/2019)... (PRWEB) , ... April 12, 2019 , ... ... recent developments in neurotechnology and will educate about innovative tools and devices being ... your local listings for more information. , This segment of Advancements will focus ...
(Date:4/10/2019)... ... ... After more than three months of renovation, Lajollacooks4u is set to reveal its ... modern lighting and fixtures, and will provide additional workspace for the many guests who ... the demand for our team-building events and cooking classes over the last eleven years,” ...
Breaking Biology Technology:
Cached News: