Navigation Links
NASA satellite data helps assess the health of Florida's coral reef

NASA satellite data was used to help monitor the health of Florida's coral reef as part of a field research effort completed this August and September.

The project was the first comprehensive assessment of the resiliency of reefs along the entire National Marine Sanctuary that stretches about 300 miles from Martin County to the Dry Tortugas in the Florida Keys. Scientists are trying to determine why some reefs are resilient to environmental changes and impacts. The work may also identify ways to care for reefs worldwide.

At nearly 175 sites, scuba divers recorded the number and species of coral and the extent of bleaching -- corals turn white when tiny algae that live inside them die. Bleaching is a symptom of coral stress, which can be caused by high water temperatures, other environmental stresses, or disease. The project was part of the Florida Reef Resiliency Program, funded by the state of Florida and The Nature Conservancy. It involved volunteers and researchers from several agencies, organizations and universities, including the University of South Florida.

Data from the MODerate-resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellites gave accurate, up-to-date information on sea surface temperatures to identify areas vulnerable to bleaching. The data was also used to measure the cumulative heat buildup over several weeks, shown to be particularly important to the health of reefs.

"MODIS imagery is beneficial because it provides more detail than traditional satellites, allowing us to detect conditions down to hundreds of meters - the size of individual reefs," said Christopher Moses, University of South Florida, Tampa, Fla.

Researchers also used the recently developed Landsat-based Millennium Coral Reef Map http://seawifs.gsfc.nasa.gov/cgi/landsat.pl to determine which reef areas were most appropriate for sampling. Funded by NASA and created at the University of South Florida, the global map divides Florida's coral reef into about 70 different reef zones.

After the findings from each sampling site are analyzed over the next few months, scientists will be able to identify the factors, including genetics, that may make some types of coral resilient to adverse conditions and bleaching. By mapping these healthy regions, officials can then attempt to simulate those conditions elsewhere.

Climate conditions, especially sea surface temperatures, are considered a major factor in coral reef health. Bleaching events typically peak when waters reach their warmest levels, usually in late summer and early fall. Phenomena like El Niño have also been linked to declines in reef health. During the strong El Niño of 1998, about 30 percent of coral off the Florida Keys died after a single mass bleaching.

Other factors that influence the health of coral reefs include rising sea levels, powerful storms, pollution, coastal development, overfishing and other human activity that focus impacts on the reefs. "There appear to be more stressors than in the past. This is a major concern as bleaching events are becoming more common and severe," said Moses. "The Florida reef tract is considered by some to be a modest success story as many of the corals persist despite the many stressors including impacts from human coastal development and recreation."

Coral is a rocklike deposit of skeletons from marine animals that accumulate to form reefs, providing habitat for more than 1 million species of plants and animals while also protecting coastlines from storm damage and erosion.

Researchers say that up to one-fifth of the world's coral reefs have been destroyed, but programs like the Florida Reef Resilience Program bring scientists, reef managers and the community together to develop strategies that improve the health of reefs while enhancing the economies dependent on their success.

Continued monitoring of coral reefs with the aid of sophisticated data from NASA satellites will help identify the causes of bleaching and ways to prevent it so that the impact of climate and man on these vital ecosystems can be minimized.
'"/>

Source:NASA/Goddard Space Flight Center


Related biology news :

1. NASA satellite data provides rapid analysis of Amazon deforestation
2. NASAs AURA satellite peers into Earths ozone hole
3. How satellite tracking revealed the migratory mysteries of endangered Atlantic loggerhead turtles
4. Jumping gene helps explain immune systems abilities
5. Protein helps regulate the genes of embryonic stem cells
6. Scientists reveal the shape of a protein that helps retroviruses break into cells
7. Thai spice helps cut blood sugar swings
8. Chemists synthesize molecule that helps body battle cancers, malaria
9. Ancient DNA helps clarify the origins of two extinct New World horse species
10. Massey Cancer Center researcher helps to identify a piece of the cancer puzzle
11. Study: Well-known protein helps stem cells become secretory cells

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


(Date:12/20/2016)... 2016   Valencell , the leading innovator ... STMicroelectronics (NYSE: STM), a global semiconductor leader serving ... today the launch of a new, highly accurate ... includes ST,s compact SensorTile turnkey multi-sensor ... sensor system. Together, SensorTile and Benchmark deliver the ...
(Date:12/16/2016)... 2016 Research and Markets has announced the ... Forecast to 2021" report to their offering. ... The biometric vehicle access system ... CAGR of 14.06% from 2016 to 2021. The market is estimated ... reach 854.8 Million by 2021. The growth of the biometric vehicle ...
(Date:12/15/2016)... , Dec. 15, 2016   WaferGen Bio-systems, Inc. ... genomics technology company, announced today that on December 13, ... Department of The Nasdaq Stock Market LLC which acknowledged ... price of WaferGen,s common stock had been at $1.00 ... has regained compliance with Listing Rule 5550(a)(2) of the ...
Breaking Biology News(10 mins):
(Date:1/19/2017)... ... January 19, 2017 , ... ... the full spectrum of drug and device development, and Prism Clinical Research ... and clinicians, today announced Verified Clinical Trials (VCT) has been selected ...
(Date:1/19/2017)... Jan. 18, 2017 Acupath Laboratories, Inc., a ... formation of an Executive Committee that will guide the ... John Cucci , a 15-year veteran of ... of Business Development to Chief Sales Officer .  ... served in senior sales leadership roles at several leading ...
(Date:1/18/2017)... According to a new market research report "In situ ... & End User (Molecular Diagnostic Laboratories, Academic and Research Institutions) - Global Forecast ... Million by 2021 from USD 557.1 Million in 2016, growing at a CAGR ... ... MarketsandMarkets Logo ...
(Date:1/18/2017)... , Jan. 18, 2017   Parent Project Muscular ... to end Duchenne muscular dystrophy (Duchenne) , today ... New Jersey Institute of Technology (NJIT) and Talem Technologies ... of robotic technology to assist people living with ... NJIT,s technology – an embedded computer, software, a force ...
Breaking Biology Technology: