Navigation Links
Scientists provide first large-scale estimate of reef shark losses in the Pacific Ocean
Date:4/27/2012

HONOLULU April 25, 2012 -- Many shark populations have plummeted in the past three decades as a result of excessive harvesting for their fins, as an incidental catch of fisheries targeting other species, and in recreational fisheries. This is particularly true for oceanic species. However, until now, a lack of data prevented scientists from properly quantifying the status of Pacific reef sharks at a large geographic scale.

In a study published online April 27 in the journal Conservation Biology, an international team of marine scientists provide the first estimates of reef shark losses in the Pacific Ocean. Using underwater surveys conducted over the past decade across 46 U.S. Pacific islands and atolls, as part of NOAA's extensive Pacific Reef Assessment and Monitoring Program (www.pifsc.noaa.gov/cred/) the team compared reef shark numbers at reefs spanning from heavily impacted ones to those among the world's most pristine.

The numbers are sobering.

"We estimate that reef shark numbers have dropped substantially around populated islands, generally by more than 90 percent compared to those at the most untouched reefs", said Marc Nadon, lead author of the study and a scientist at the Joint Institute for Marine and Atmospheric Research (JIMAR) located at the University of Hawaii, as well as a PhD candidate with Dr. Jerry Ault at the University of Miami's Rosenstiel School of Marine & Atmospheric Science. "In short, people and sharks don't mix."

To obtain these estimates, Nadon and his colleagues used an innovative survey method, called 'towed-diver surveys,' which were designed specifically for the census of large, highly mobile reef fishes like sharks. The surveys involve paired SCUBA divers recording shark sightings while towed behind a small boat.

"Towed-diver surveys are key to our effort to quantify reef shark abundance," said Ivor Williams, head of
'/>"/>

Contact: Barbra Gonzalez
barbgo@rsmas.miami.edu
305-421-4704
University of Miami Rosenstiel School of Marine & Atmospheric Science
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Stanford and MIT scientists win Perl-UNC Neuroscience prize
2. Queens is UK leader for female scientists and engineers
3. Scientists uncover strong support for once-marginalized theory on Parkinsons disease
4. Scientists develop new technique that could improve heart attack prediction
5. Scientists advance field of research with publication of newly validated method for analyzing flavanols in cocoa
6. Scripps research scientists find anticonvulsant drug helps marijuana smokers kick the habit
7. Scientists have discovered genes that increase the risk of osteoporosis and fractures
8. Marine scientists urge government to reassess oil spill response
9. Scientists find Achilles heel in life-threatening malaria parasites
10. Scientists find that neurological changes can happen due to social status
11. Scientists discover switch in plants to create flowers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists provide first large-scale estimate of reef shark losses in the Pacific Ocean
(Date:8/19/2014)... Aug. 19, 2014 To improve students, chances ... grades, the University of Houston (UH) implemented a ... students at risk for failure. , Through ... Board (THECB), the Department of Biology and Biochemistry ... students taking "General Biology" for non-majors and "Introductory ...
(Date:8/19/2014)... is available in German . ... intermittent energy sources. If a large amount of electricity is ... excess energy will have to be stored during productive periods ... storage capacities are far from adequate for the purpose. Science ... important focus lies on battery systems that used to be ...
(Date:8/19/2014)... lemur. It,s not an African Bush Baby or even a ... downright "cool" primate from Southeast Asia. , "It,s really not ... Brown, curator-in-charge at the University of Kansas, Biodiversity Institute. "A ... body; a long tail with a furry tuft at the ... a bit like the disks on the digits of tree ...
Breaking Biology News(10 mins):University of Houson program earns kudos for improving grades, retaining students 2University of Houson program earns kudos for improving grades, retaining students 3Asian inventions dominate energy storage systems 2Asian inventions dominate energy storage systems 3Philippine tarsier gets boost from Kansas research, and genetic proof of a new variety 2Philippine tarsier gets boost from Kansas research, and genetic proof of a new variety 3
... by global warming can prove extremely destructive to island habitats, ... C. Bellard, C. Leclerc and F. Courchamp of the ... possible scenarios, from optimistic to very pessimistic, to bring attention ... biodiversity hotspots worldwide. The study was published in the open ...
... measures carbon dioxide and suggests that far from being a ... a biological signalling molecule. Researchers led by Professor Nick ... of Warwick have shown that the body senses carbon dioxide ... receptor for the gas. Connexin 26 is better known as ...
... largest lake in Britain and Ireland, Lough Neagh, has lost ... to researchers at Queen,s University Belfast., The study by Quercus, ... number of diving ducks migrating to the lake for the ... in the space of a decade., The research, published in ...
Cached Biology News:Island biodiversity in danger of total submersion with climate change 2Carbon dioxide's new-found signalling role could be applied to blood flow, birth and deafness 2Largest lake in Britain and Ireland has lost three-quarters of winter water birds 2
(Date:8/18/2014)... - SQI Diagnostics Inc. (TSX-V: SQD), a life sciences company ... advanced microarray diagnostics, today announced it will hold an ... pm ET.  During the call, ... of SQI,s recent commercialization progress and then introduce Dr. ... appointed to the Board of Directors of SQI and ...
(Date:8/18/2014)... YORK , August 18, 2014 ... published by Transparency Market Research "Life Science Reagents ... Flow Cytometry, Electrophoresis, Chromatography, In-Vitro Diagnostic Reagents and ... and Academic Institutions, Clinical Laboratories, and Forensic Laboratories)- ... Forecast, 2013 - 2019", the global life science ...
(Date:8/18/2014)... 18. August 2014 Vier führende ... internationale klinische Studie auf, in der eine ... soll das Sehvermögen bei allen Entfernungen verbessern, ... möglicherweise keine Lese- oder Gleitsichtbrille mehr benötigen. ... FluidVision Accommodating Intraocular Lens (FluidVision ...
(Date:8/15/2014)... FOREST, Ill. , Aug. 15, 2014   ... world,s leading provider of injectable drugs and infusion technologies, ... Morgan Stanley Global Healthcare Conference on Tuesday, Sept. 9, ... The presentation is scheduled to begin at 11:45 ... will be available to all interested parties through a ...
Breaking Biology Technology:SQI Diagnostics Announces Investor Conference Call with Dr. Allan Pronovost 2SQI Diagnostics Announces Investor Conference Call with Dr. Allan Pronovost 3Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 2Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 3Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 4Global Life Science Reagents Market Expected to Reach USD 25.7 Billion in 2019: Transparency Market Research 5Implantation einer revolutionären akkommodativen Linse bei Katarakt-Patienten in deutschen Augenzentren im Rahmen einer internationalen klinischen Studie 2Implantation einer revolutionären akkommodativen Linse bei Katarakt-Patienten in deutschen Augenzentren im Rahmen einer internationalen klinischen Studie 3Implantation einer revolutionären akkommodativen Linse bei Katarakt-Patienten in deutschen Augenzentren im Rahmen einer internationalen klinischen Studie 4
... when theoretical work is eventually supported by experimentation. Such ... Italian and US scientists when they received preliminary confirmation ... that is currently orbiting the Earth on the Foton-M3 ... week ago, the scientists are already very excited about ...
... Board Reflects Emphasis on Drug Development and Recent ... ... Lexicon,Pharmaceuticals, Inc. (Nasdaq: LXRX ) announced several changes to ... drug development and the completion of a major strategic financing,with ...
... NanoBio(R) Corporation, a,biopharmaceutical company developing novel anti-infective ... infections, today announced,the addition of four new scientists ... PharmD, Ph.D.; Susan Ciotti, Ph.D.; Robert L. Hagan, ... developing and commercializing,its novel topical anti-infectives and mucosal ...
Cached Biology Technology:Fluid theory confirmed by Foton 2Lexicon Appoints Judith Swain, M.D. to Board of Directors 2Lexicon Appoints Judith Swain, M.D. to Board of Directors 3Lexicon Appoints Judith Swain, M.D. to Board of Directors 4NanoBio Expands Drug Development Team for Its Anti-Infective Products 2NanoBio Expands Drug Development Team for Its Anti-Infective Products 3
5-bromouridine 5'-triphosphate (BrUTP) *10 mM in TE buffer*...
...
in vitro Translation, Accessory Products...
... The GenoStat Inducible Expression System provides tightly ... mammalian cells and is capable of repeated ... is mediated by the highly specific interaction ... bipartite nuclear receptor complex. Gene expression levels ...
Biology Products: