Science Current Events | Science News | Brightsurf.com
 

Concerns raised over EU ban on ditching unwanted fish

May 13, 2014

New rules banning fishermen from throwing away unwanted fish they have caught could harm wildlife - and fail to improve fish stocks, a University of Strathclyde report has found.

The study, published in the journal Nature Communications, suggests new reforms to the European Union's Common Fisheries Policy (CFP) - ending the practice of throwing away unwanted fish caught at sea - may have unintended consequences. The new CFP took effect on 1 January 2014 and will phase out the discarding of fish between 2015 and 2019.

The aim is to improve fish stocks - but Professor Mike Heath, who led the research team from Strathclyde's Department of Mathematics and Statistics, said this outcome was uncertain.

Professor Heath said: "Wildlife everywhere capitalises on waste from human activity, and discarded fish are food for a wide range of seabirds, marine mammals, seabed animals and other fish. Therefore, banning discards of fish could have unintended effects on the ecosystem."

The team developed a computer simulation model of the North Sea marine ecosystem and used it to investigate the effects of changes in the fishing pressure and the proportion of fishery catch which is discarded at sea. Forcing vessels to land fish which are currently discarded leads to adverse effects on seabirds and marine mammals - and on seabed animals - but without any improvements in fish stocks, the study found.

In contrast, changing fishing practices - so that unwanted fish are no longer captured - had dramatic effects in the model which affected the entire food web, with major benefits for birds, mammals, and fish stocks. This could be achieved by "improved selectivity", through the use of fishing gear designed to avoid unwanted catches and judicious timing and location of fishing.

Although both approaches to eliminating discarding satisfy the societal demand for reductions in waste of natural resources, the conservation benefits are quite different, the study authors found.

Dr Robin Cook, who also worked on the research, said: "Our results highlight the importance of considering the broader ecosystem consequences of fishery management. Policy changes to reduce discards affect the food web and, without careful consideration, may dissipate or negate intended benefits.

"Inflating landing quotas to accommodate the entire catch is an inadequate solution with few conservation benefits. On the other hand, the effective reductions in harvest rates resulting from changes in fishing practices to eliminate the capture of unwanted fish can deliver conservation benefits, especially in heavily exploited systems.

"These ecological effects need to be considered alongside the practical, societal and economic issues in developing a sustainable policy."

Discarding of undersize and low-value fish by commercial fisheries is not a new problem. UK Parliamentary debates in the 1890s condemned the quantities of plaice thrown away by fishing fleets in the North Sea because they were too small to be sold.

Today, the waste of living resources due to discarding is considered unacceptable. For this reason, the EU has reformed the Common Fisheries Policy in an effort to eradicate the practice by obliging fishing vessels to land all of their catch.

The key issue for the policy is the extent to which the landing obligation is compensated by an increase in quotas. The Strathclyde research shows that full compensation, in which quotas are raised by an amount equivalent to the quantity of fish currently discarded, negates any conservation benefits. On the other hand, forcing improvements in the selectivity of fisheries by offering no compensation has dramatic conservation benefits; hence there is a trade-off between practicality and ecological benefit.

University of Strathclyde


Related Fishing Current Events and Fishing News Articles


Hydrothermal vents, methane seeps play enormous role in marine life, global climate
The hydrothermal vents and methane seeps on the ocean floor that were once thought to be geologic and biological oddities are now emerging as a major force in ocean ecosystems, marine life and global climate.

'Phage' fishing yields new weapon against antibiotic resistance
Yale researchers were fishing for a new weapon against antibiotic resistance and found one floating in a Connecticut pond, they report May 26, 2016 in the journal Scientific Reports.

'Canaries' of the ocean highlight threat to world's ecosystems
Fifty-nine finfish species have 'disappeared' from fishermen's catches in the world's most species rich and vulnerable marine region, new research has shown.

Oregon's Coos Bay historically has avoided serious hypoxic conditions
A study of the 15-mile length of Coos Bay, from the ocean to the city of the same name, finds the bay is free of toxic levels of reduced oxygen that often affect other Oregon locations.

Achieving fish biomass targets: The key to securing a sustainable future for coral reefs
Scientists from WCS (Wildlife Conservation Society), University of Queensland, James Cook University, and Macquarie University have completed a massive study that will help communities and countries of the Western Indian Ocean measure and restore fish populations while identifying the best policies for achieving global sustainable and conservation targets.

Mediterranean loggerhead turtles dying in waters off the Middle East and North Africa
Thousands of loggerhead turtles are killed annually in areas of Syria, Libya and Egypt and Tunisia where they travel to find food, a new study led by researchers at the University of Exeter has highlighted.

Invasive species not best conservation tool: Study
Harnessing an invasive fish species sounded like a promising conservation tool to help reverse the destruction wreaked by zebra mussels on endangered native mollusks in the Great Lakes - except that it won't work, says a University of Guelph ecologist.

Therapsids adapted to drastic climate change by having shorter life expectancies
Two hundred and fifty-two million years ago, a series of Siberian volcanoes erupted and sent the Earth into the greatest mass extinction of all time. Billions of tons of carbon were propelled into the atmosphere, radically altering the Earth's climate.

How to survive extinction: Live fast, die young
Two hundred and fifty-two million years ago, a series of Siberian volcanoes erupted and sent the Earth into the greatest mass extinction of all time.

Radical solution could avoid depletion of natural resources
A radical approach to managing natural resources could target the problem of their over-exploitation, such as in forests or fisheries, according to a new study.
More Fishing Current Events and Fishing News Articles

The Total Fishing Manual (Paperback Edition): 317 Essential Fishing Skills (Field & Stream)

The Total Fishing Manual (Paperback Edition): 317 Essential Fishing Skills (Field & Stream)
by Joe Cermele (Author)


When it comes to fishing, nobody knows more than the writers and editors at Field & Stream magazine--unless it's the local guides, prizewinners, and other experts they interviewed for this book. The Total Fishing Manual is chock full of 317 field-tested tools, techniques and tactics, collected and written by the Field & Stream editors and accompanied by amazing photos and handy illustrations. 

GEAR UP How to pick the best lures, baits, flies, and tackle for every situation and every style of water you plan to fish. Learn how to customize your rod and reel, and to get the most out of your equipment.

HIT THE WATER From small streams to major rivers, ponds to big lakes, and bays to the open ocean, hundreds of field-tested strategies will help you catch more fish with...

Fishing for Dummies

Fishing for Dummies
by Peter Kaminsky (Author), Greg Schwipps (Author)


Make fishing easier and more rewarding every time you pick up your rod and reelNo one can promise that you will catch fish all the time. For as long as we've been catching fish, fish have been outsmarting us. But there are tips and pointers that even the most seasoned anglers can pick up!Fishing For Dummies helps you prepare for what awaits beyond the shore. From trout to carp and bass to bonefish, you'll get coverage of the latest and greatest techniques to fish like a pro.The latest in fishing line and equipment technology, including new electronics and gadgetsAn expanded section on casting methods for spinning tackle and bait casting8 pages of full-color fish illustrationsIf you're one of the millions of people who enjoy fishing, whether for fun or sport, this hands-on, friendly guide...

Curious George Goes Fishing

Curious George Goes Fishing
by Margret Rey (Author), H. A. Rey (Illustrator)


Inspired by a vignette in the classic Curious George Flies a Kite, this amusing episode shows George at his curious best trying to catch a fish.

A Fishing I Will Go

A Fishing I Will Go
by Lisa French (Author)


Follow us on a fishing adventure to catch that perfect keeper for dinner!
Catchy rhymes and detailed, hand-drawn pictures make A-Fishing I Will Go! a delightful read that’s great for children of all ages. 
Help your child find a jellyfish, starfish, piece of driftwood and a message in a bottle on every splash page!
Some of the profits from book sales will be donated to support multiple sclerosis awareness and research.

Basic Fishing: A Beginner’s Guide

Basic Fishing: A Beginner’s Guide
by Wade Bourne (Author)


A great beginner’s guide for burgeoning fishermen.

New to fishing and have no idea how to start? With Basic Fishing, you’ll be an accomplished angler in no time at all. Expert angler and award-winning outdoor writer Wade Bourne was taught to fish by his father. In turn, Bourne taught his children how to fish. Now he brings his expertise to Basic Fishing, a step-by-step guide that masterfully breaks down the art of fishing with diagrams, vivid photographs, and lessons on:

• Different types of fishing equipment and how to select the best tackle
• Baiting techniques for artificial and natural baits
• Tips for selecting the best fishing spot
• A survey of boats, motors, and boating accessories
• Handy methods for cooking and cleaning fish
• And...

The Orvis Fly-Fishing Guide, Revised

The Orvis Fly-Fishing Guide, Revised
by Tom Rosenbauer (Author)


The Orvis Fly-Fishing Guide is the best-selling book for fly anglers!

Whether you’re a soon-to-be fly fisher looking for the right book to get you started or you’re reasonably proficient at the sport and need a refresher course on tying knots for saltwater or the latest info on how to care for your waders or how to fish a dry fly in tricky currents, this invaluable, best-selling guide is for you.

The latest, most up-to-date and trustworthy information on:

*tackle selection and care—rods, reels, lines, leaders and knots
*casting with instructive line drawings by Bob White
* hundreds of flies in full color, including 50 new patterns
*presentation, striking, playing and landing
*tactics for stream, stillwater and salt
*new...

Fishing T-Shirt Eat Sleep Fish Repeat-Black-xl

Fishing T-Shirt Eat Sleep Fish Repeat-Black-xl
b


As humans, we can become creature of habit. Why wouldn't our hobbies be the same? After fishing, eat, then sleep; and repeat again. Any Questions? This listing is for a 6.1 oz heavyweight 100% preshrunk cotton t-shirt. Please choose your Size and/or Color from the drop down menu above if applicable.

Greatest Fishing Stories Ever Told: Twenty-Eight Unforgettable Fishing Tales

Greatest Fishing Stories Ever Told: Twenty-Eight Unforgettable Fishing Tales
by Lamar Underwood (Editor)


The Greatest Fishing Stories Ever Told is sure to ignite recollections of your own angling experiences as well as send your imagination adrift. In this compilation of tales you will read about two kinds of places, the ones you have been to before and love to remember, and the places you have only dreamed of going, and would love to visit. Whether you prefer to fish rivers, estuaries, or beaches, this book will take you to all kinds of water, where you'll experience catching every kind of fish.
Read on as some of the sport's most talented writers recount their personal memories of catching bass, trout, bluefish marlin, tuna, and more. You'll read about all kinds of fish, and all kinds of fishermen in these pages. Explore the Pacific with Zane Grey, as he fights a 1,000-pound blue...

Incredible--and True!--Fishing Stories

Incredible--and True!--Fishing Stories
by Shaun Morey (Author)


What’s almost as good as going fishing? Hearing, telling, and swapping great fish stories. Shaun Morey is a fisherman, a connoisseur of fish stories, and a journalist with a novelist’s eye (and vice versa) in this collection of over 100 incredible (and true!) fishing stories.

Here are Remarkable Catches—like the time Billy Sandifer caught a 1,000-pound tiger shark in the surf (he released it after nabbing a souvenir tooth). Grueling Battles—like Bob Ploeger’s record-breaking 37-hour fight with a Pacific salmon. Hilarious Feats of Bravery, like the exploits of Matt Watson, who leapt out of a helicopter to land on the back of a marlin. And, in what can only be considered poetic justice, Shocking Acts of Fish Aggression, like Mitchell Lee Franklin’s visit to the...

History of Fly-Fishing in Fifty Flies

History of Fly-Fishing in Fifty Flies
by Ian Whitelaw (Author)


New York Times Bestseller

The History of Fly-Fishing in Fifty Flies recounts the history of a sport that dates back 2,000 years, focusing on milestone flies from the first feathered hook to contemporary patterns using cutting-edge materials. Among the countless fly patterns created over the centuries, these 50 have been carefully chosen to represent the development not only of the flies themselves, but also of fly-fishing techniques—and of rods, lines, and reels. These iconic flies also chart the spread of this addictive sport from its modern origins on the chalk streams of southern England and the rivers of Scotland to the U.S., Europe, South America, Australia, and now to every country in the world. Filled with profiles of the key characters involved, tying tips, photographs...

© 2017 BrightSurf.com