Navigation Links
Detecting detrimental change in coral reefs
Date:1/26/2012

tical analysis of reflectance information. While Dustan cannot diagnosis the type of change with temporal texture he can establish where serious changes have occurred. Coral communities have seasonal rhythms and periodicities, but larger, significant changes show up as statistical outliers in temporal texture maps and often correlate with reef decline.

A Case Study

Carysfort reefnamed for the HMS Carysfort, an eighteenth century British warship that ran aground on the reef in 1770is considered the most ecologically diverse on the Florida Keys National Marine Sanctuary's northern seaward edge, but today it is in a state of ecological collapse.

Dustan and colleagues conducted the first quantitative field study of coral health at Carysfort in 1974. After a quarter century their studies showed that coral had declined 92 percent. The coral had succumbed to an array of stressors culminating with deadly diseases.

Using the well-characterized Carysfort reef as his control, Dustan calculated the temporal texture for the reef using a series of 20 Landsat images collected between 1982 and 1996. The resulting temporal texture maps correlated with the known areas of significant coral loss (where coral communities have turned into algal-dominated substrates) and they correctly showed that the seaward shallow regions have had the most detrimental change.

This novel approach to change detection is only possible because the long-term calibration of Landsat data assures that data from year-to-year is consistent. Dustin needs at least 6 to 8 Landsat images to create a reliable temporal texture map, but the more data that is available, the finer the results.

Dustan tested this work in the U.S. because he had a robust study site and because prior to 1999 coverage of reefs outside of the U.S. was spotty. With the Landsat 7 launch in 1999 a new global data acquisition strategy was established and for the first time the planet's
'/>"/>

Contact: Rani Gran
Rani.C.Gran@nasa.gov
301-286-2483
NASA/Goddard Space Flight Center
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Marines best friend shows explosive-detecting capabilities
2. MU researchers unveil new method for detecting lung cancer in Nature article
3. New test shows promise for detecting warning signs of joint replacement failure
4. Stem cells may be key to understanding the origins of colon cancer and detecting relapse
5. Detecting pathogens in waterways: An improved approach
6. Detecting lethal diseases with rust and sand
7. Early investigations promising for detecting metastatic breast cancer cells
8. Researcher develops accurate method for detecting dangerous fluoride
9. Harbor seals whiskers as good at detecting fish as echolocating dolphins
10. Toward a urine test for detecting colon cancer
11. Simple test could offer cheap solution to detecting landmines
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Detecting detrimental change in coral reefs
(Date:4/17/2014)... University of Texas Medical Branch at Galveston are ... with radiation for cervical cancer should begin colorectal ... The UTMB researchers, finding a high incidence of ... with radiation, offer new recommendations that the younger ... about eight years after their initial cervical cancer ...
(Date:4/17/2014)... Scientists have uncovered a new way the immune system ... aid efforts to use immune cells to treat illness. ... have the immunological equivalent of "neighborhood police" specialized ... single organ, instead of an entire city, the body. ... St. Louis have shown that the liver, skin and ...
(Date:4/17/2014)... of The Proceedings of the National ... 29, raises a number of startling questions about a ... take for granted. At the end of the last ... shifted from hunting animals and gathering fruits and tubers ... straightforward and yet the more scientists learn, the more ...
Breaking Biology News(10 mins):Radiation therapy for cervical cancer increases risk for colorectal cancer 2Some immune cells defend only 1 organ 2Genetic study tackles mystery of slow plant domestications 2Genetic study tackles mystery of slow plant domestications 3Genetic study tackles mystery of slow plant domestications 4
... PUYALLUP, Wash.A Washington State University toxicologist has found ... butterfly populations., The research was aimed at possible ... in northern California, but it has implications for ... used, says John Stark, an ecotoxicologist and director ...
... ago, marine scientists made a startling discovery in the deep ... water surges from the seafloor and life thrives without sunlight. ... areas where methane rises from seeps on the ocean bottom. ... living side-by-side? No one thought so. Until now. ...
... , The National Institute of Standards and Technology (NIST) ... the federal government,s Natural Resources Damage Assessment (NRDA) in ... spill 40 miles off the Louisiana coast. The new ... 2779), will be used as a quality control material ...
Cached Biology News:Commonly used herbicides seen as threat to endangered butterflies 2Hot meets cold at new deep-sea ecosystem: 'Hydrothermal seep' 2NIST releases Gulf of Mexico crude oil reference material 2
(Date:1/14/2014)... Communications, a leading provider of strategic communications services to corporations and ... the United States and Europe ... JD, is returning to the firm,s Washington, D.C. ... more than two years of service as Associate Commissioner for the ...
(Date:1/14/2014)... , Jan. 14, 2014 The largest international ... medicinal plants and therapeutic derivatives thereof has endorsed ... and researchers about the challenges of adulterated herb ... ) The Society for Medicinal ...
(Date:1/14/2014)... Canada (PRWEB) January 14, 2014 In ... its motives and methods in product development and promotion ... the industry. This mistrust, fueled by concerns about the ... fed by reports of spectacular fines to the world’s ...
(Date:1/14/2014)... Kinaxis ®, provider of RapidResponse ®, a cloud-based supply ... ( S&OP ) service, is proud to be a gold ... held at the Hilton San Diego Bayfront, January 30 – ... Kaszas , Director of Supply Chain at Amgen, as she ...
Breaking Biology Technology:Former FDA Associate Commissioner Returns To 3D Communications 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 2The Sunshine Act: Necessary Regulation or Unnecessary Dysregulation? New Life Science Webinar Hosted by Xtalks and IRB Services 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... news for the global effort to reduce the amount of ... technologies that rely upon the piezoelectric effect. A lead-free alternative ... by researchers with the U.S. Department of Energy,s Lawrence Berkeley ... Berkeley. The key to this success is the use ...
... TAI,AN CITY, China, Nov. 13 ... ("China Biologic," or the "Company"),one of the leading plasma-based ... host a conference call at 8:00 a.m. ET on,Monday, ... financial results,ended on September 30, 2009. , ...
... Soligenix, Inc., (Soligenix or the Company) (OTC ... Inc., a late-stage biotechnology company, announced today its ... , Highlights and Recent Developments: ... confirmatory Phase 3 randomized, double-blind, placebo-controlled, multicenter clinical ...
Cached Biology Technology:Berkeley researchers take the lead out of piezoelectrics 2Berkeley researchers take the lead out of piezoelectrics 3China Biologic Schedules Conference Call to Discuss Third Quarter 2009 Financial Results 2Soligenix Reports Third Quarter 2009 Financial Results 2Soligenix Reports Third Quarter 2009 Financial Results 3Soligenix Reports Third Quarter 2009 Financial Results 4Soligenix Reports Third Quarter 2009 Financial Results 5
... Panels were designed for full-length gene cloning ... to identify the desired cDNA clone. The ... 96-well "Master Plate," where each well contains ... the positive well(s) by gel electrophoresis of ...
... The CEQ 8800 Genetic Analysis System, which ... This automated system adds a higher level ... The CEQ 8800, part of Beckman Coulters new ... coding link with the Biomek series liquid handers, ...
... cDNA Library Panels were designed for full-length ... of PCRs to identify the desired cDNA ... in a 96-well "Master Plate," where each ... Having identified the positive well(s) by gel ...
... cDNA Library Panels were designed for full-length ... of PCRs to identify the desired cDNA ... in a 96-well "Master Plate," where each ... Having identified the positive well(s) by gel ...
Biology Products: