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:4/16/2019)... ... April 16, 2019 , ... ... speakers for two signature events: The 2019 ISPE Biopharmaceutical Manufacturing Conference , ... 20–21 June. Taking place in one of the most influential bio hubs, Boston, ...
(Date:4/12/2019)... ... April 12, 2019 , ... Gnubiotics Sciences SA ... accessible carbohydrates (MACs) as specialty ingredients for the global animal and human nutrition ... commercial launch of its first-in class microbiome modulating prebiotic GNU100, for companion animal ...
(Date:4/5/2019)... ... April 04, 2019 , ... ... integrated linear encoders providing 0.05 microns and 0.005 microns resolution, respectively. The new ... drive variations are available, from fast DC-servo motors with linear encoders and low-friction ...
Breaking Biology News(10 mins):
(Date:3/29/2019)... ... March 28, 2019 , ... Specific Diagnostics announced ... proceeded with a second stage of funding for Specific’s Reveal™ rapid antibiotic susceptibility ... top of the $1.7 million already awarded by CARB-X. The additional $1.7M will ...
(Date:3/27/2019)... ... March 27, 2019 , ... In honor of National Nutrition Month, ... importance of healthy meals and good nutrition. This month, Chef Jodi Abel appeared ... chef. , The first segment addressed the nutritional value of USDA’s MyPlate, ...
(Date:3/23/2019)... ... March 22, 2019 , ... uBiome has awarded microbiome research ... researchers at Nnamdi Azikiwe University in Anambra State, Nigeria led by Dr. Kingsley ... Department of Medical Laboratory Sciences and Deputy Provost, College of Health Sciences. The ...
(Date:3/19/2019)... N.J. (PRWEB) , ... March 19, 2019 , ... The ... is a great opportunity to see the most cutting-edge cancer research. The Visikol team ... with 3D cell culture assays as well as their digital pathology ...
Breaking Biology Technology:
Cached News: