Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

UBC scientist invokes future generations to save tuna populations from collapse

20.02.2008
Balancing short- and long-term fisheries benefits could have prevented the collapse of the cod populations in Atlantic Canada, and is the last best chance for tuna, says University of British Columbia fisheries economist Rashid Sumaila.

“We must act as if future generations of people are alive and negotiating with us now on catch levels,” says Sumaila, who is presenting his findings with UBC Fisheries Prof. Daniel Pauly at the American Association for the Advancement of Science (AAAS) Annual Meeting in Boston, MA.

Comparing the fate of tuna to that of cod, which helped shape the economies of whole nations in the early 20th century, Sumaila and fellow scientists from Stanford University, the University of New Hampshire and the World Wildlife Fund (WWF) say warning signs are clear that tuna stocks are on the brink of disastrous decline.

“At its peak in 1968, cod fisheries in Atlantic Canada provided US$1.4 billion in revenues,” says Sumaila. “By 2004, they delivered only US$10 million.” He estimates revenues from yellowfin tuna in the Western Central Pacific peaked in 2001 at US$1.9 billion and dropped by 40 per cent in only three years to US$1.1 billion.

Developed countries like the U.S. and Japan have technologically advanced long-line fishing fleets that enable them to harvest adult yellowfin tuna, highly valuable and popular with the Japanese sushi market. Developing countries such as the Philippines, however, have less advanced fleets that target skipjack using purse-seiners and fish aggregating devices while trapping juvenile yellowfin as by-catch.

WWF-Philippines estimates 16 per cent of total tuna catch of the Philippine’s purse-seine fleet are juvenile yellowfin by-catch. If allowed to grow to maturity, this by-catch would total 1.2 million tonnes in marketable biomass, representing over US$1.2 billion a year in lost revenue.

“If we could establish cooperative management agreements that see developing countries receive a share of current adult tuna fishery yields from developed nations in return for allowing the juvenile population to mature, everyone, including future generations of people, will benefit from much greater economic gains while preserving tuna population for the long run,” says Sumaila.

Rashid Sumaila | EurekAlert!
Further information:
http://www.fisheries.ubc.ca

More articles from Ecology, The Environment and Conservation:

nachricht Scientists produce a new roadmap for guiding development & conservation in the Amazon
09.12.2016 | Wildlife Conservation Society

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

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: Electron highway inside crystal

Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.

Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...

Im Focus: Significantly more productivity in USP lasers

In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.

Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...

Im Focus: Shape matters when light meets atom

Mapping the interaction of a single atom with a single photon may inform design of quantum devices

Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...

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...

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

Researchers identify potentially druggable mutant p53 proteins that promote cancer growth

09.12.2016 | Life Sciences

Scientists produce a new roadmap for guiding development & conservation in the Amazon

09.12.2016 | Ecology, The Environment and Conservation

Satellites, airport visibility readings shed light on troops' exposure to air pollution

09.12.2016 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>