Featured Research

from universities, journals, and other organizations

Scientists offer new take on selective fishing

Date:
May 20, 2010
Source:
CSIRO Australia
Summary:
A new, less selective approach to commercial fishing is needed to ensure the ongoing productivity of marine ecosystems and to maintain biodiversity, according to new research.

A combination of reduced fishing effort, less selective fishing strategies, and better use of the catch may help achieve sustainable overall yields while maintaining healthy ecosystems.
Credit: CSIRO

A new, less selective approach to commercial fishing is needed to ensure the ongoing productivity of marine ecosystems and to maintain biodiversity, according to a paper in the Proceedings of the National Academy of Sciences.

The paper, 'Ecosystem-based fisheries management requires a change to the selective fishing philosophy', was written by a team of authors led by Shijie Zhou of the CSIRO Wealth from Oceans Flagship.

Dr Zhou says ecosystem-based fisheries management (EBFM) is broadly practiced as a means of reducing the impact of fishing on marine ecosystems while ensuring sustainable fisheries.

He says fishing methods under EBFM vary greatly in how selectively they catch fish. The common view is that highly selective methods that catch only one or a few species above a certain size limit are more environmentally responsible.

But recent advances in fishery science and ecology suggest a selective approach may exacerbate rather than reduce the impact of fishing on both fisheries and marine ecosystems.

"Selective fishing alters biodiversity, which in turn changes ecosystem functioning and may affect fisheries production, hindering rather than helping to achieve the goals of EBFM," Dr Zhou says. "These effects have been overshadowed to some extent by a focus on overharvesting."

"We believe it is time to critically rethink traditional selective fishing approaches that might not protect ecosystems and fisheries as intended, but may in fact make them more vulnerable to large changes in structure and function."

Dr Zhou and his co-authors propose a "balanced exploitation" approach combining reduced fishing effort, less selective fishing strategies, and better use of the catch to help achieve sustainable overall yields while maintaining healthy ecosystems.

"The trade-off is lower exploitation levels on currently highly targeted species against better use of more parts of the ecosystem," Dr Zhou says.

"Fisheries production could actually increase through better use of non-target species, while reducing unsustainably high catches of target species, thereby helping to meet the challenge of increasing global food demand."

Dr Zhou says the implications of such a change in approach would need to be considered by a wide range of stakeholders including fishermen, fishery managers and conservation agencies.


Story Source:

The above story is based on materials provided by CSIRO Australia. Note: Materials may be edited for content and length.


Journal Reference:

  1. S. Zhou, A. D. M. Smith, A. E. Punt, A. J. Richardson, M. Gibbs, E. A. Fulton, S. Pascoe, C. Bulman, P. Bayliss, K. Sainsbury. Ecosystem-based fisheries management requires a change to the selective fishing philosophy. Proceedings of the National Academy of Sciences, 2010; DOI: 10.1073/pnas.0912771107

Cite This Page:

CSIRO Australia. "Scientists offer new take on selective fishing." ScienceDaily. ScienceDaily, 20 May 2010. <www.sciencedaily.com/releases/2010/05/100513093729.htm>.
CSIRO Australia. (2010, May 20). Scientists offer new take on selective fishing. ScienceDaily. Retrieved October 21, 2014 from www.sciencedaily.com/releases/2010/05/100513093729.htm
CSIRO Australia. "Scientists offer new take on selective fishing." ScienceDaily. www.sciencedaily.com/releases/2010/05/100513093729.htm (accessed October 21, 2014).

Share This



More Plants & Animals News

Tuesday, October 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

'Cadaver Dog' Sniffs out Human Remains

'Cadaver Dog' Sniffs out Human Remains

AP (Oct. 21, 2014) Where's a body buried? Buster's nose can often tell you. He's a cadaver dog, specially trained to find human remains and increasingly being used by law enforcement and accepted in courts. These dogs are helping solve even decades-old mysteries. (Oct. 21) Video provided by AP
Powered by NewsLook.com
White Lion Cubs Born in Belgrade Zoo

White Lion Cubs Born in Belgrade Zoo

AFP (Oct. 20, 2014) Two white lion cubs, an extremely rare subspecies of the African lion, were recently born at Belgrade Zoo. They are being bottle fed by zoo keepers after they were rejected by their mother after birth. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Goliath Spider Will Give You Nightmares

Goliath Spider Will Give You Nightmares

Buzz60 (Oct. 20, 2014) An entomologist stumbled upon a South American Goliath Birdeater. With a name like that, you know it's a terrifying creepy crawler. Sean Dowling (@SeanDowlingTV) has the details. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins