Navigation Links
Ongoing collapse of coral reef shark populations

Investigators have revealed that coral reef shark populations are in the midst of rapid decline, and that “no-take zones”—reefs where fishing is prohibited—do protect sharks, but only when compliance with no-take regulations is high. The findings, reported by William Robbins and colleagues at James Cook University and its ARC Centre of Excellence for Coral Reef Studies, appear in the December 5th issue of Current Biology.

Reef sharks are so-called apex predators on tropical coral reefs and are therefore of significant potential importance to the functioning of coral reef ecosystems. The reproductive biology of reef sharks makes them particularly vulnerable to fishing, but until now, there have been no studies of the response of these sharks to fishing pressure.

The new work focused on Australia’s Great Barrier Reef, which is widely considered to be one of the world’s least degraded, and best managed, reef systems. For balancing conservation with sustainable use, the Great Barrier Reef is regulated through an extensive series of management zones in which different areas are open to different levels of fishing. In their study, the researchers determined the status of two species of reef shark—the whitetip and grey reef sharks—by employing a unique combination of fisheries-independent abundance estimates and measurements of the survival and reproduction of individual sharks. Their findings show that reef shark abundance on reefs open to fishing are about ten times lower than on unfished reefs. Moreover, high reef shark abundance was only apparent on the most strictly enforced of the no-take zones, suggesting that even moderate levels of poaching can derail attempts to protect shark populations. These observations, coupled with population modeling showing ongoing, rapid declines in population size in fished areas, lead the authors to conclude that reef sharks are approaching “ecological extinction”—that is, becoming so rare that they can no longer per
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Discovering an ecosystem beneath a collapsed Antarctic ice shelf
2. Did humans cause ecosystem collapse in ancient Australia?
3. By 2048 all current fish, seafood species projected to collapse
4. Tsunami-damaged coral reefs should be left to recover naturally, say scientists
5. Hidden sponges determine coral reefs nutrient cycle
6. Marine conservation organizations team up to conduct Indonesia coral reefs assessment
7. Health of coral reefs detected from orbit
8. Scientists look to the Bahamas as a model for coral reef conservation
9. Tiny polyps gorge themselves to survive coral bleaching
10. Too much sugar not good for coral reefs
11. Sea corals trick helps scientists tag proteins
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Ongoing collapse coral reef shark populations

(Date:9/1/2014)... ago, electron microscopy revealed the presence of tiny blob-like ... But scientists still don,t know what they do ... believed to be crucial to the life of a ... disease treatment., In the Journal of Cell Biology ... from various backgrounds, from biophysics to cell biology, to ...
(Date:8/31/2014)... discovered that ,good, cholesterol is turned ,bad, by a ... was found to damage ,good, HDL cholesterol, which removes ... , Low levels of HDL, High Density Lipoprotein, are ... MG being common in the elderly and those with ... from the British Heart Foundation (BHF) and published in ...
(Date:8/31/2014)... challenges in modern medicine is developing drugs that are ... and side-effects to the patient. Such properties are directly ... Ideally, the drug should have a shape that is ... binds it with high specificity. Publishing in Nature ... acid that can impact the 3D structure of bioactive ...
Breaking Biology News(10 mins):Scientists call for investigation of mysterious cloud-like collections in cells 2Sugar substance 'kills' good HDL cholesterol, new research finds 2A new synthetic amino acid for an emerging class of drugs 2A new synthetic amino acid for an emerging class of drugs 3
... almost seven years in secret. Most people did ... characterization department at Sandia National Laboratories was contributing important ... anthracis, the spores that cause the disease anthrax. The ... several news media offices and to two U.S. senators. ...
... HOUSTON, Aug. 21, 2008 Noise can be irritating ... and maybe even 60-foot whales in the Gulf of Mexico. ... that man-made noise may be a cause of stress for ... a five-year study show that noise pollution especially noise ...
... DNA into the space of a typical chromosome, a ... material it contains. "It is like compacting your ... Emeritus in Physics at the University of Chicago. ... showing that these and related organisms may have evolved ...
Cached Biology News:FBI unveils science of anthrax investigation 2FBI unveils science of anthrax investigation 3Unique study shows oil, gas seismic work not affecting Gulf sperm whales 2Unique study shows oil, gas seismic work not affecting Gulf sperm whales 3Exploding chromosomes fuel research about evolution of genetic storage 2Exploding chromosomes fuel research about evolution of genetic storage 3
(Date:9/1/2014)... Albany, NewYork (PRWEB) September 01, 2014 ... Pharma, Biotech and Diagnostics report provides comprehensive understanding ... and agreements entered into by the worlds leading ... detailed understand and analysis of how and why ... flexibility of a prospective partner’s negotiated deals terms ...
(Date:8/31/2014)... August 31, 2014 This is ... state of the Epoxy Hardener industry in ... overview of the industry, including definitions, applications and ... domestic market analysis are provided with a focus ... the market. A comparison between the international and ...
(Date:8/29/2014)... New York (PRWEB) August 29, 2014 ... valued at $5.6 billion in 2019. It is ... from 2013 to 2019, and was valued at ... report published by Transparency Market Research. , For ... visit: http://www.transparencymarketresearch.com/companion-diagnostics-market.html . , The research report, ...
(Date:8/29/2014)... 29, 2014 Local veterinarian, Dr. Keith ... are seeking candidates to participate in an investigational study ... The ultimate goal of this study is to determine ... one or two arthritically affected joints can help reduce ... Candidates for the current investigational study must be older ...
Breaking Biology Technology:Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 2Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 3Collaborative R&D Terms & Agreements in Pharma, Biotech and Diagnostics Industry Analysis, Size, Share, Growth, Trends And Forecast Research Report by Researchmoz.us 4Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 2Epoxy Hardener Industry Development Trends in Global & China Regions Now Available at ReportsnReports.com 3Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 2Companion Diagnostics Market to Hit $5.6 Billion in 2019: Transparency Market Research 3Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... TALLAHASSEE, Fla., April 13, 2012  The Large Urology ... urologists, today disputed a study published this week ... leaders stressed that the study grossly misrepresents the ... physicians for adopting evidence based clinical protocols. They ...
... 12, 2012 Shire plc (LSE: SHP, NASDAQ: ... quarter 2012 earnings on Thursday April 26, 2012. ... EDT Investor conference call time: 14:00 BST / 09:00 EDT, ... Angus Russell, Chief Executive Officer and Graham Hetherington, Chief Financial Officer ...
... informatics tools, increases the likelihood that it will be possible ... the brain without having to measure every aspect of it. ... brain in silicothe goal of the proposed Human Brain Projecta ... opens to a world of predictive biology," says Henry Markram, ...
Cached Biology Technology:Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 2Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 3Urologists Debunk Misleading, Grossly Inaccurate Prostate Cancer Biopsy Study 4Shire plc: First Quarter 2012 Results Date Notification - April 26, 2012 2Data mining opens the door to predictive neuroscience 2
MMP-20 Immunogen: Activated recombinant human MMP-2 Storage: -20 C, Avoid Freeze/Thaw Cycles...
Rabbit anti-T-box 6...
Anti-Rsk2/MAPKAP Kinase 1b, #0 SK2/MAPKAP K1 beta Smartpool&t 3T3 cell lysate Non-specific Control Pool , #D 1X Universal Buffer...
...
Biology Products: