Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Risk of Extinction Increases for Cod

11.05.2010
When John Cabot arrived on the shores of Newfoundland in 1497, the ship’s crew reported cod fish were so abundant that sailors could scoop them up with buckets. Even years later, English skippers wrote about cod shoals “so thick by the shore that we hardly have been able to row a boat through them.”

Plentiful catches are now the stuff of history books. The Committee on the Status of Endangered Wildlife in Canada (COSEWIC) reports cod populations from the Arctic to the Bay of Fundy declining to perilously low levels—by 97 to 99 per cent since the 1960s.

The committee recommends to federal environment minister Jim Prentice that cod be listed as “endangered” on the legal list of species at risk.

Even with reduced catches since 1992, “cod are at such historically low levels that they have gone beyond their tipping point,” says Jeffrey Hutchings, the Dalhousie University biology professor who just stepped down as the chair of COSEWIC. “They may no longer be able to replace themselves in their ecosystem.”

Cod was designated by COSEWIC as a “special concern” in April 1998 with some populations deemed “threatened” or “endangered” by May 2003. But at that time, the government rejected COSEWIC’s recommendation to list the cod as endangered because of “socio-economic” concerns.

(A note about the terminology: species considered “special concern” are those particularly sensitive to human activities or natural events but are not endangered; “threatened” are species likely to become endangered if limiting conditions are not reversed; “endangered” are species facing imminent extinction or extirpation, missing from the wild.)

But Dr. Hutchings believes there may be a silver lining to COSEWIC’s report if the federal government accepts it this time. “Then a recovery strategy would have to be implemented by law,” he says.

“It’s old news that cod are in trouble. It’s been 18 years since the collapse of northern cod stocks,” he says. “The silver lining is if we get determined action by the federal government to make recovery targets, set timelines to achieve those targets and establish harvest control rules.”

The committee, which met last month to assess 51 species at risk, has now assessed 602 wildlife species in various risk categories, including 262 endangered, 151 threatened, 166 special concern, 23 extirpated (no longer found in the Canadian wild), and 13 wildlife species extinct.

With Dr. Hutchings stepping down, Marty Leonard, also a Dalhousie professor, assumes the chair for a two-year term.

Charles Crosby | Newswise Science News
Further information:
http://www.dal.ca

Further reports about: COSEWIC cod stock silver lining wildlife species

More articles from Ecology, The Environment and Conservation:

nachricht When corals eat plastics
24.05.2018 | Justus-Liebig-Universität Gießen

nachricht Dispersal of Fish Eggs by Water Birds – Just a Myth?
19.02.2018 | Universität Basel

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: Powerful IT security for the car of the future – research alliance develops new approaches

The more electronics steer, accelerate and brake cars, the more important it is to protect them against cyber-attacks. That is why 15 partners from industry and academia will work together over the next three years on new approaches to IT security in self-driving cars. The joint project goes by the name Security For Connected, Autonomous Cars (SecForCARs) and has funding of €7.2 million from the German Federal Ministry of Education and Research. Infineon is leading the project.

Vehicles already offer diverse communication interfaces and more and more automated functions, such as distance and lane-keeping assist systems. At the same...

Im Focus: Molecular switch will facilitate the development of pioneering electro-optical devices

A research team led by physicists at the Technical University of Munich (TUM) has developed molecular nanoswitches that can be toggled between two structurally different states using an applied voltage. They can serve as the basis for a pioneering class of devices that could replace silicon-based components with organic molecules.

The development of new electronic technologies drives the incessant reduction of functional component sizes. In the context of an international collaborative...

Im Focus: LZH showcases laser material processing of tomorrow at the LASYS 2018

At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.

At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...

Im Focus: Self-illuminating pixels for a new display generation

There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?

At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...

Im Focus: Explanation for puzzling quantum oscillations has been found

So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics

Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

In focus: Climate adapted plants

25.05.2018 | Event News

Save the date: Forum European Neuroscience – 07-11 July 2018 in Berlin, Germany

02.05.2018 | Event News

Invitation to the upcoming "Current Topics in Bioinformatics: Big Data in Genomics and Medicine"

13.04.2018 | Event News

 
Latest News

In focus: Climate adapted plants

25.05.2018 | Event News

Flow probes from the 3D printer

25.05.2018 | Machine Engineering

Less is more? Gene switch for healthy aging found

25.05.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>