Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Assessing levies for by-catch could fund conservation measures

19.07.2007
Fishing industry lines accidentally catch so many seabirds and turtles that their populations are being threatened. One solution offered by a Cornell researcher and an Australian government scientist is to assess fines when threatened species are caught and killed.

That money, the researchers suggest in the August issue of Frontiers in Ecology and Environment, could be used to address other causes of species decline, such as pollution and invasive predators.

This dual approach, they say, would give fishermen financial incentives to find creative ways to avoid catching noncommercial species, known as by-catch, while providing funds to address more hazardous threats to seabirds and turtles. For example, while almost half of all seabirds listed by the World Conservation Union are directly or indirectly threatened by fishing, as many as three-quarters of those species are also threatened by such invasive species as cats and rats at breeding colonies.

"Fisheries are complex, revenue-generating industries, and large majorities are unregulated," said Josh Donlan, a co-author of the paper and a graduate student in ecology and evolutionary biology at Cornell. "Once you add in the cost of doing conservation, this is a win-win situation for a lot of endangered seabirds and sea turtles that are impacted by fisheries' by-catch."

Donlan and co-author Chris Wilcox, a senior research scientist at Australia's Commonwealth Scientific and Industrial Research Organization, used Australia's Eastern Tuna and Billfish Fishery as a case study to test the benefits and costs of their approach, called compensatory mitigation. The fishery extends from Cape York, Queensland, to the South Australia/Victoria border and targets albacore, yellowfin and bigeye tuna and billfish. However, each year the fishery unintentionally kills 1,800 to 4,500 flesh-footed shearwaters (Puffinus carneipus), a seabird whose entire eastern Australian population breeds on Lord Howe Island, which is within the fishery.

The researchers compared the expected costs and conservation benefits of closing down fishing areas that suffer from other causes of population decline, such as rats eating eggs, chicks and adult birds on the island. Their analysis showed that closing the fishery around Lord Howe Island would cost about $3 million U.S. and increase the growth rate of the shearwater population by about 6 percent. But killing the rats would cost only about $500,000, yet yield a 32 percent increase in shearwater population growth.

In other words, killing the rats would increase the shearwater population per dollar invested 23 times more than closing the fishery.

The researchers say that levies, with higher fees imposed for more endangered species, would make users who earn a profit from common-pool resources pay for the impacts they have on the system. At the same time, they argue, if levy money were given to conservationists to address other threats to seabird or turtle populations, then these conservationists would in turn be made more accountable for producing and quantifying results.

"This idea moves away from strictly charity models of doing conservation [where money is donated to conservationists], to a noncharity model [where those involved are held accountable]," said Donlan.

While compensatory mitigation may not work for all seabirds or threatened species, there remain many species that face multiple threats and could benefit significantly from this approach, he said.

Blaine Friedlander | EurekAlert!
Further information:
http://www.cornell.edu

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 >>>