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
NASA/Goddard Space Flight Center

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:

(Date:8/6/2019)... ... August 05, 2019 , ... Keck Graduate Institute (KGI) President Sheldon Schuster ... Health Sciences (SPHS). , “Dean Zdanowicz is highly regarded as an innovative leader who ... “He is a great choice to build on the success of the KGI School ...
(Date:8/4/2019)... ... 02, 2019 , ... Bioclinica, a leading provider of science ... of medical therapies, announced today that Michael O’Neal, M.D., Chief Medical Officer, Head ... Most Inspiring People in the Life-Sciences Industry.” Dr. O’Neal was recognized for ...
(Date:8/1/2019)... ... 31, 2019 , ... Molecular Devices, LLC, a leader in ... of its FLIPR® Penta High-Throughput Cellular Screening System. , The new FLIPR Penta ... G-protein-coupled receptors (GPCRs) and ion channels, offering a new high-speed camera option capable ...
Breaking Biology News(10 mins):
(Date:7/9/2019)... (PRWEB) , ... July 08, 2019 , ... ... winner. The company’s SmartLight Indicator was recognized as the 2019 Innovative Product of ... industry forward. The prestigious awards were during Sensors Expo & Conference 2019, ...
(Date:6/18/2019)... , ... June 18, 2019 , ... Personalized Stem ... New Drug (IND) application to the FDA for use of a person’s own adipose-derived ... a treatment of osteoarthritis in the knee. This IND is the first of ...
(Date:6/11/2019)... ... June 10, 2019 , ... DeepDyve and ... journals to DeepDyve’s rental service for peer-reviewed journals. , IOPP’s portfolio represents ... than 20 million articles, sourced from more than 15,000 journals. , “By partnering ...
(Date:6/6/2019)... ... June 05, 2019 , ... WCCT Global, Inc ., ... industries, announced today that they will be receiving 3 awards at the 2019 CRO ... received 2 awards in the categories of overall Quality and Compatibility (Access to desired ...
Breaking Biology Technology:
Cached News: