. Solar Energy News .




.
FLORA AND FAUNA
Will the eel survive its management
by Staff Writers
Gothenburg, Sweden (SPX) Jun 09, 2011

There is a clear conflict between conserving the eel as a species and preserving the eel fishery. The management is aimed at "mitigating" the adverse effects of eel fishery and other human activity instead of guaranteeing that the conservation target is met. By comparison, both Norway and Ireland have introduced a complete suspension of all eel fishery so that migration back to the Sargasso Sea will increase.

The European eel is on the way to disappearing for good. The species is critically endangered, and there are strong scientific arguments for suspending all fishing. Despite this situation, Swedish eel fishery is allowed to continue. Analysis of the eel management plan by the Swedish Institute for the Marine Environment identifies clear shortcomings. It is unlikely that Sweden will meet the target that has been set for silver eels capable of migrating back to the Sargasso Sea so that they can contribute to regeneration.

The recruitment of new annual cohorts of European eel has decreased over a long period, and today it represents only a few per cent of what it was 30 to 50 years ago. The eel is particularly sensitive to overfishing, as it becomes sexually mature at an advanced age, but there also other reasons for its decline.

The International Council for the Exploration of the Sea (ICES) has long warned of the consequences of the ongoing population decline, and since 1998 the Council has recommended that an eel management plan should be adopted at the European level. Since 2007, the European Commission has also required all eel-fishing Member States to develop a plan to reduce eel mortality caused by human activity.

In Sweden, the Swedish Board of Fisheries has been tasked by the Government with taking responsibility for a national eel management plan.

Many measures are listed under the plan: prohibition of recreational fishing for eel, special professional fishing licences for eel, modified fishing times, closure of yellow eel fishing on the west coast and increased stockings of juvenile eels. There is also a declaration of intent by the Swedish Board of Fisheries together with six power companies to reduce mortality due to eels being sucked into the turbines of hydropower plants.

The analysis of the Swedish eel management plan by the Swedish Institute for the Marine Environment identifies a number of shortcomings. Some of these are listed below:

+ There is a clear conflict between conserving the eel as a species and preserving the eel fishery. The management is aimed at "mitigating" the adverse effects of eel fishery and other human activity instead of guaranteeing that the conservation target is met. By comparison, both Norway and Ireland have introduced a complete suspension of all eel fishery so that migration back to the Sargasso Sea will increase.

+ The material on which the plan is based is deficient and lacks critical scrutiny. There is uncertainty in stock assessment which has not been taken into account. There is therefore a great risk of overestimating the size of the stock and continuing to over-exploit.

+ The operationalisation of targets as requirements and measures is inadequate - the gains considered to be made from stockings, fishery regulation and reduced turbine mortality are based more on hope than on solid data. Implementation of the plan takes place or is intended to take place over a very long period of time.

Even if the plan is eventually followed, it is unlikely that 2.6 million silver eels will be able to migrate, which is Sweden's target. This is due among other things to relatively extensive eel fishery still being permitted and uncertain results from the stocking of Swedish waters with French and British juvenile eels; the eel may be disoriented and it is doubtful whether it will find its way back to the Sargasso Sea to spawn.




Related Links
University of Gothenburg
Darwin Today At TerraDaily.com

.
Get Our Free Newsletters Via Email
...
Buy Advertising Editorial Enquiries






. Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle



FLORA AND FAUNA
'Laughing' insects among new Philippine species
Manila (AFP) June 8, 2011
Laughing cicadas and small "cat sharks" are among scores of species believed new to science discovered by US and Filipino researchers in waters and islands of the Philippines, the team said Wednesday. The finds showcased the vast biodiversity of the Southeast Asian archipelago that is now under severe threat, said the experts from the California Academy of Sciences and local institutions. ... read more


FLORA AND FAUNA
Viable Pathway to Develop Sustainable Aviation Biofuels Industry

Winston Wong Bio-Inspired Ice Vehicle Premiered at NCKU

Shell and Cosan fuelling a lower-carbon future with biofuels

New Global Website Presents Low-Carbon Solutions from Sugarcane

FLORA AND FAUNA
Industry Helps Engineering Students Reanimate Robotic Mine Vehicles

The hand as a joystick

Guide vests robotic navigation aids for the visually impaired

Controlling robotic arms is child's play

FLORA AND FAUNA
China wind energy firms back subsidy move: report

US claims victory in China wind energy spat

Mortenson Builds Sixth Wind Project in Golden State

GL Garrad Hassan releases update of WindFarmer 4.2

FLORA AND FAUNA
Study compares 'distracted driving' laws

China's auto sales fall in May

BAE and Nurol clinch Malaysia vehicle deal

General Motor's China sales fall for second month

FLORA AND FAUNA
Sea spat raises China-Vietnam tensions

US Army Base Fort George G. Meade Selects Viridity Energy

Novel geothermal technology packs a one-two punch against climate change

Old rivalries raise doubts about OPEC

FLORA AND FAUNA
Singapore researchers invent broadband graphene polarizer

Iowa State physicists explain the long, useful lifetime of carbon-14

New form of girl's best friend is lighter than ever

2 graphene layers may be better than 1

FLORA AND FAUNA
Study backs Australia pollution tax plans

Capstone Turbine Receives Order for Four C1000s From BPC Engineering

Mideast, energy on Russia-EU agenda

Australia says economy stronger with carbon tax

FLORA AND FAUNA
50 percent increase in sustainably managed tropical forests

Higher density means world forests are capturing more carbon

Managing forests requires a bird's-eye view

Greenpeace says Barbie is forest vandal


Memory Foam Mattress Review
Newsletters :: SpaceDaily Express :: SpaceWar Express :: TerraDaily Express :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News
.

The content herein, unless otherwise known to be public domain, are Copyright 1995-2011 - Space Media Network. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement