Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Fiji’s Largest Marine Reserve Swarming with Sharks

19.07.2013
Study by WCS and University of Western Australia finds reef sharks two to four times more abundant in a marine reserve compared to nearby fished areas

Researchers from the Wildlife Conservation Society and the University of Western Australia have found that Fiji’s largest marine reserve contains more sharks than surrounding areas that allow fishing, evidence that marine protected areas can be good for sharks.



Stacy Jupiter/WCS
A grey reef shark, one of the species encountered in a recent study by WCS and the University of Western Australia. Marine researchers found that the number of sharks in Fiji’s largest marine reserve (where fishing is prohibited) is two to four times greater than in adjacent areas where fishing is permitted.

In a study of the no-take reserve’s shark populations, the researchers found that the number of sharks in Namena Reserve—located on the southern coast of Fiji’s Vanua Levu Island—is two to four times greater than in adjacent areas where fishing is permitted.

The study appears in a recent edition of the journal Coral Reefs. The authors include: Jordan Goetze of the Wildlife Conservation Society and the University of Western Australia; and Laura Fullwood of the University of Western Australia.

The researchers conducted their study during a three-week period (July 4-28) in 2009 in Namena, a 60-square-kilometer reserve established in 1997 and managed by local communities. In order to survey the sharks, Goetze and the WCS Fiji team used stereo baited remote underwater video systems to record data at eight sites within the reserve and eight outside the reserve at both shallow and deeper depths (between 5-8 meters, and 25-30 meters respectively).

“The study not only provides evidence that Fiji’s largest marine reserve benefits reef sharks, but achieves this in a non-destructive manner using novel stereo video technology,” said Goetze, the lead author of the paper.

The 60-minute video segments taken captured images of five different species of reef shark, providing the researchers with data on shark abundance. In addition, Goetze and the research team also were able to estimate the length and size of the sharks whenever the animals were within eight meters of the camera, enabling them to generate estimates on biomass for Namena Reserve.

Outside the reserve, in areas where fishing is permitted, the researchers found fewer sharks. The researchers note that, because local Fiji communities traditionally considered sharks to be sacred, eating them is typically taboo. The most likely driver of higher shark densities within the reserve, assert the authors, is the significantly higher availability of prey fish that WCS researchers have found within the reserve boundaries compared with adjacent areas.

As demand for shark products grows, higher prices are driving some locals to catch sharks, while Fiji shark populations are also vulnerable to foreign fishing fleets. Worldwide, increasing rates of harvesting are leading to the depletion of many of the world’s shark species.

“The news from Fiji gives us solid proof that marine reserves can have positive effects on reef shark populations,” said Dr. Caleb McClennen, Director of WCS’s Marine Program. “Shark populations are declining worldwide due to the demand for shark products, particularly fins for the Asian markets. We need to establish management strategies that will protect these ancient predators and the ecosystems they inhabit.”

The study was made possible by the generous support of the David and Lucile Packard Foundation, the Gordon and Betty Moore Foundation, the Stavros Niarchos Foundation, and the University of Western Australia (UWA) Marine Science Honours program.

The Wildlife Conservation Society saves wildlife and wild places worldwide. We do so through science, global conservation, education and the management of the world's largest system of urban wildlife parks, led by the flagship Bronx Zoo. Together these activities change attitudes towards nature and help people imagine wildlife and humans living in harmony. WCS is committed to this mission because it is essential to the integrity of life on Earth. Visit www.wcs.org.

The Gordon and Betty Moore Foundation believes in bold ideas that create enduring impact in the areas of science, environmental conservation and patient care. Intel co-founder Gordon and his wife Betty established the foundation to create positive change around the world and at home in the San Francisco Bay Area. Environmental conservation efforts promote sustainability, protect critical ecological systems and align conservation needs with human development. Patient care focuses on eliminating preventable harms and unnecessary healthcare costs through meaningful engagement of patients and their families in a supportive, redesigned healthcare system. Science looks for opportunities to transform–or even create–entire fields by investing in early-stage research, emerging fields and top research scientists. Visit Moore.org or follow @MooreEnviro.

The Stavros Niarchos Foundation (www.SNF.org) is one of the world’s leading international philanthropic organizations, making grants in the areas of arts and culture, education, health and medicine, and social welfare. The Foundation funds organizations and projects that exhibit strong leadership and sound management and are expected to achieve a broad, lasting and positive social impact. The Foundation also seeks actively to support projects that facilitate the formation of public-private partnerships as effective means for serving public welfare.

John Delaney | Newswise
Further information:
http://www.wcs.org

More articles from Ecology, The Environment and Conservation:

nachricht Successful calculation of human and natural influence on cloud formation
04.11.2016 | Goethe-Universität Frankfurt am Main

nachricht Invasive Insects Cost the World Billions Per Year
04.10.2016 | University of Adelaide

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>