Why Study Bycatch? an Introduction to the Theme Section on Fisheries Bycatch
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An Evaluation of Cetacean Bycatch in UK Fisheries: Problems and Solutions
AN EVALUATION OF CETACEAN BYCATCH IN UK FISHERIES: PROBLEMS AND SOLUTIONS A report to WDC and HSI Russell Leaper | February 2021 1 SUMMARY Cetacean bycatch has been a serious and persistent welfare and conservation issue in UK waters for many years. The most recent estimates indicate that over 1000 cetaceans are killed each year in UK fisheries. The species most affected are harbour porpoise, common dolphin, minke and humpback whale, but all cetaceans in UK waters are vulnerable. The level of suffering for mammals that become entangled in fishing gear has been described as ‘one of the grossest abuses of wild animal sensibility in the modern world’. Although potential solutions exist, the mitigation efforts to date have only achieved small reductions in the numbers of animals that are killed. The Fisheries Act 2020 commits the UK to minimise and, where possible, eliminate bycatch of sensitive species. The Act does not include details of how to achieve this, but requires reconsideration of fisheries management and practices, the phasing out of some gears, and a change of approach from strategies previously pursued. While gill nets are recognised as the highest risk gear category globally for cetacean bycatch, there are also serious bycatch problems associated with trawl fisheries and with creel fisheries using pots and traps. The different characteristics of these gear types and the types and size of vessels involved, require different approaches to bycatch monitoring and mitigation. Acoustic deterrent devices (ADDs), such as ‘pingers’, have been shown to be effective at reducing harbour porpoise bycatch in gill nets, but the reduction achieved so far has been small, they may cause unwanted disturbance or displacement, and they may not be effective for other species. -
SUSTAINABLE FISHERIES and RESPONSIBLE AQUACULTURE: a Guide for USAID Staff and Partners
SUSTAINABLE FISHERIES AND RESPONSIBLE AQUACULTURE: A Guide for USAID Staff and Partners June 2013 ABOUT THIS GUIDE GOAL This guide provides basic information on how to design programs to reform capture fisheries (also referred to as “wild” fisheries) and aquaculture sectors to ensure sound and effective development, environmental sustainability, economic profitability, and social responsibility. To achieve these objectives, this document focuses on ways to reduce the threats to biodiversity and ecosystem productivity through improved governance and more integrated planning and management practices. In the face of food insecurity, global climate change, and increasing population pressures, it is imperative that development programs help to maintain ecosystem resilience and the multiple goods and services that ecosystems provide. Conserving biodiversity and ecosystem functions are central to maintaining ecosystem integrity, health, and productivity. The intent of the guide is not to suggest that fisheries and aquaculture are interchangeable: these sectors are unique although linked. The world cannot afford to neglect global fisheries and expect aquaculture to fill that void. Global food security will not be achievable without reversing the decline of fisheries, restoring fisheries productivity, and moving towards more environmentally friendly and responsible aquaculture. There is a need for reform in both fisheries and aquaculture to reduce their environmental and social impacts. USAID’s experience has shown that well-designed programs can reform capture fisheries management, reducing threats to biodiversity while leading to increased productivity, incomes, and livelihoods. Agency programs have focused on an ecosystem-based approach to management in conjunction with improved governance, secure tenure and access to resources, and the application of modern management practices. -
A COMPARATIVE ACCOUNT of the SMALL PELAGIC FISHERIES in the APFIC REGION by M
A COMPARATIVE ACCOUNT OF THE SMALL PELAGIC FISHERIES IN THE APFIC REGION by M. Devaraj and E. Vivekanandan Central Marine Fisheries Research Institute Cocbin-682014, India Abstract The production of the small pe/agics in the APFIC region was 1.2 mt/sq. km during 1995. Among the four areas in the region, the small pe/agics have registered (i) the maximum annual fluctuations in the western Indian Ocean; (ii) the highest increase duri'}i the past two decades along the west coast of Thailand in the eastern Indian Ocean; and (iii) the consistent decline in the landings during the past one decade along the Japanese coast in the northwest Pacific Ocean. The short rnackerels emerged as the largest fishery in the APFlC region, fom'ing 19.5% of the landings of the small pelagics in 1995. The group consisting afthe sardines and the anchovies has shown clear signs of decline during the past one decade in almost the entire region. Most of the small pelagics have unique biological characteristics such as fast growth, short longevity, late maturity, high nalllral mortality, shoaling behaviour, high fecundity and severe recruitment fluctuations. As many species of the small pelagics undertake migration, collaborative research programmes and close coordination are required among the APFle countries for the stock assessment of all the major species. The management measures under implementation in these countries have been reviewed, with suggestions for regional cooperation for the management of the stocks of the small pelagics. INTRODUCTION The Asia-Pacific Fishery Commission covers four oceanic areas, which have been classified by the FAO as the western Indian Ocean (FAO Statistical Area 51), eastern Indian Ocean (Area 57) , northwest Pacific Ocean (Area 61) and western central Pacific Ocean (Area 71). -
Ecosystem-Based Fisheries Management Improving the Resilience of Ocean Ecosystems to Support Fish Populations, Coastal Communities
A brief from March 2014 Ecosystem-Based Fisheries Management Improving the resilience of ocean ecosystems to support fish populations, coastal communities The fish on the end of your line, the little forage fish that feed the big fish, the corals that build reef habitats, and the catch of the day in your favorite restaurant are interconnected parts of a vibrant ocean ecosystem. Ensuring the long-term health of important marine species will depend upon our ability to understand and account for the interactions among those species, their environment, and the people who rely upon them for food, commerce, and sport. This comprehensive approach, called ecosystem-based fisheries management, is needed to conserve the healthy ecosystems essential to the sustainability of our fisheries and to deal with the increasingly complex challenges facing our oceans. The United States is a global leader in fisheries management and has made great strides in ending overfishing (the problem of catching fish faster than they can reproduce) and rebuilding vulnerable populations under the Magnuson-Stevens Fishery Conservation and Management Act—the primary law governing U.S. ocean fisheries. In many regions of our nation, this progress has helped reestablish more abundant fish populations and created economic benefits for the fishing industry and coastal communities. Core conservation policies added to the law in 1996 and 2007 are fundamental to improving individual fish populations and returning value to fishermen. We must maintain them as the foundation for sustainable management. But the United States should make the transition from a species-by-species approach to ecosystem-based fisheries management to meet the rising and urgent challenges of damaged ocean environments and dynamic, changing oceans. -
SOLUTION: Gathering and Sonic Blasts for Oil Exploration Because These Practices Can Harm and Kill Whales
ENDANGEREDWHALES © Nolan/Greenpeace WE HAVE A PROBLEM: WHAT YOU CAN DO: • Many whale species still face extinction. • Tell the Bush administration to strongly support whale protection so whaling countries get the • Blue whales, the largest animals ever, may now number as message. few as 400.1 • Ask elected officials to press Iceland, Japan • Rogue nations Japan, Norway and Iceland flout the and Norway to respect the commercial whaling international ban on commercial whaling. moratorium. • Other threats facing whales include global warming, toxic • Demand that the U.S. curb global warming pollution dumping, noise pollution and lethal “bycatch” from fishing. and sign the Stockholm Convention, which bans the most harmful chemicals on the planet. • Tell Congress that you oppose sonar intelligence SOLUTION: gathering and sonic blasts for oil exploration because these practices can harm and kill whales. • Japan, Norway and Iceland must join the rest of the world and respect the moratorium on commercial whaling. • The loophole Japan exploits to carry out whaling for “Tomostpeople,whalingisallnineteenth- “scientific” research should be closed. centurystuff.Theyhavenoideaabout • Fishing operations causing large numbers of whale hugefloatingslaughterhouses,steel-hulled bycatch deaths must be cleaned up or stopped. chaserboatswithsonartostalkwhales, • Concerted international action must be taken to stop andharpoonsfiredfromcannons.” other threats to whales including global warming, noise Bob Hunter, pollution, ship strikes and toxic contamination. -
'Bycatch' Whaling a Growing Threat to Coastal Whales 23 June 2009
'Bycatch' whaling a growing threat to coastal whales 23 June 2009 Scientists are warning that a new form of Whales are occasionally killed in entanglements unregulated whaling has emerged along the with fishing nets and the deaths of large whales are coastlines of Japan and South Korea, where the reported by most member nations of the IWC. commercial sale of whales killed as fisheries Japan and South Korea are the only countries that "bycatch" is threatening coastal stocks of minke allow the commercial sale of products killed as whales and other protected species. "incidental bycatch." The sheer number of whales represented by whale-meat products on the market Scott Baker, associate director of the Marine suggests that both countries have an inordinate Mammal Institute at Oregon State University, says amount of bycatch, Baker said. DNA analysis of whale-meat products sold in Japanese markets suggests that the number of "The sale of bycatch alone supports a lucrative whales actually killed through this "bycatch trade in whale meat at markets in some Korean whaling" may be equal to that killed through coastal cities, where the wholesale price of an adult Japan's scientific whaling program - about 150 minke whale can reach as high as $100,000," annually from each source. Baker said. "Given these financial incentives, you have to wonder how many of these whales are, in Baker, a cetacean expert, and Vimoksalehi fact, killed intentionally." Lukoscheck of the University of California-Irvine presented their findings at the recent scientific In Japan, whale-meat products enter into the meeting of the International Whaling Commission commercial supply chain that supports the (IWC) in Portugal. -
Field Experiments Show That Acoustic Pingers Reduce Marine Mammal Bycatch in the California Drift Gill Net Fishery
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Publications, Agencies and Staff of the U.S. Department of Commerce U.S. Department of Commerce 2003 FIELD EXPERIMENTS SHOW THAT ACOUSTIC PINGERS REDUCE MARINE MAMMAL BYCATCH IN THE CALIFORNIA DRIFT GILL NET FISHERY Jay Barlow National Marine Fisheries Service, [email protected] Grant A. Cameron UCSD Follow this and additional works at: https://digitalcommons.unl.edu/usdeptcommercepub Part of the Environmental Sciences Commons Barlow, Jay and Cameron, Grant A., "FIELD EXPERIMENTS SHOW THAT ACOUSTIC PINGERS REDUCE MARINE MAMMAL BYCATCH IN THE CALIFORNIA DRIFT GILL NET FISHERY" (2003). Publications, Agencies and Staff of the U.S. Department of Commerce. 236. https://digitalcommons.unl.edu/usdeptcommercepub/236 This Article is brought to you for free and open access by the U.S. Department of Commerce at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Publications, Agencies and Staff of the U.S. Department of Commerce by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. MARINE MAMMAL SCIENCE, 19(2):265-283 (April 2003) 0 2003 by the Society for Marine Mammalogy FIELD EXPERIMENTS SHOW THAT ACOUSTIC PINGERS REDUCE MARINE MAMMAL BYCATCH IN THE CALIFORNIA DRIFT GILL NET FISHERY JAY BARLOW GRANTA. CAMERON’ Southwest Fisheries Science Center, National Marine Fisheries Service, 8604 La Jolla Shores Drive, La Jolla, California 92037, U.S.A. E-mail: [email protected] ABSTRACT A controlled experiment was carried out in 19961997 to determine whether acoustic deterrent devices (pingers) reduce marine mammal bycatch in the California drift gill net fishery for swordfish and sharks. -
Coastal Upwelling Revisited: Ekman, Bakun, and Improved 10.1029/2018JC014187 Upwelling Indices for the U.S
Journal of Geophysical Research: Oceans RESEARCH ARTICLE Coastal Upwelling Revisited: Ekman, Bakun, and Improved 10.1029/2018JC014187 Upwelling Indices for the U.S. West Coast Key Points: Michael G. Jacox1,2 , Christopher A. Edwards3 , Elliott L. Hazen1 , and Steven J. Bograd1 • New upwelling indices are presented – for the U.S. West Coast (31 47°N) to 1NOAA Southwest Fisheries Science Center, Monterey, CA, USA, 2NOAA Earth System Research Laboratory, Boulder, CO, address shortcomings in historical 3 indices USA, University of California, Santa Cruz, CA, USA • The Coastal Upwelling Transport Index (CUTI) estimates vertical volume transport (i.e., Abstract Coastal upwelling is responsible for thriving marine ecosystems and fisheries that are upwelling/downwelling) disproportionately productive relative to their surface area, particularly in the world’s major eastern • The Biologically Effective Upwelling ’ Transport Index (BEUTI) estimates boundary upwelling systems. Along oceanic eastern boundaries, equatorward wind stress and the Earth s vertical nitrate flux rotation combine to drive a near-surface layer of water offshore, a process called Ekman transport. Similarly, positive wind stress curl drives divergence in the surface Ekman layer and consequently upwelling from Supporting Information: below, a process known as Ekman suction. In both cases, displaced water is replaced by upwelling of relatively • Supporting Information S1 nutrient-rich water from below, which stimulates the growth of microscopic phytoplankton that form the base of the marine food web. Ekman theory is foundational and underlies the calculation of upwelling indices Correspondence to: such as the “Bakun Index” that are ubiquitous in eastern boundary upwelling system studies. While generally M. G. Jacox, fi [email protected] valuable rst-order descriptions, these indices and their underlying theory provide an incomplete picture of coastal upwelling. -
Seafood Watch® Standard for Fisheries
1 Seafood Watch® Standard for Fisheries Table of Contents Table of Contents ............................................................................................................................... 1 Introduction ...................................................................................................................................... 2 Seafood Watch Guiding Principles ...................................................................................................... 3 Seafood Watch Criteria and Scoring Methodology for Fisheries ........................................................... 5 Criterion 1 – Impacts on the Species Under Assessment ...................................................................... 8 Factor 1.1 Abundance .................................................................................................................... 9 Factor 1.2 Fishing Mortality ......................................................................................................... 19 Criterion 2 – Impacts on Other Capture Species ................................................................................ 22 Factor 2.1 Abundance .................................................................................................................. 26 Factor 2.2 Fishing Mortality ......................................................................................................... 27 Factor 2.3 Modifying Factor: Discards and Bait Use .................................................................... 29 Criterion -
Other Processes Regulating Ecosystem Productivity and Fish Production in the Western Indian Ocean Andrew Bakun, Claude Ray, and Salvador Lluch-Cota
CoaStalUpwellinO' and Other Processes Regulating Ecosystem Productivity and Fish Production in the Western Indian Ocean Andrew Bakun, Claude Ray, and Salvador Lluch-Cota Abstract /1 Theseasonal intensity of wind-induced coastal upwelling in the western Indian Ocean is investigated. The upwelling off Northeast Somalia stands out as the dominant upwelling feature in the region, producing by far the strongest seasonal upwelling pulse that exists as a; regular feature in any ocean on our planet. It is surmised that the productive pelagic fish habitat off Southwest India may owe its particularly favorable attributes to coastal trapped wave propagation originating in a region of very strong wind-driven offshore trans port near the southern extremity of the Indian Subcontinent. Effects of relatively mild austral summer upwelling that occurs in certain coastal ecosystems of the southern hemi sphere may be suppressed by the effects of intense onshore transport impacting these areas during the opposite (SW Monsoon) period. An explanation for the extreme paucity of fish landings, as well as for the unusually high production of oceanic (tuna) fisheries relative to coastal fisheries, is sought in the extremely dissipative nature of the physical systems of the region. In this respect, it appears that the Gulf of Aden and some areas within the Mozambique Channel could act as important retention areas and sources of i "see6stock" for maintenance of the function and dillersitv of the lamer reoional biolooical , !I ecosystems. 103 104 large Marine EcosySlIlms ofthe Indian Ocean - . Introduction The western Indian Ocean is the site ofsome of the most dynamically varying-. large marine ecosystems (LMEs) that exist on our planet. -
ICELAND, WHALING and ECOSYSTEM - BASED FISHERY MANAGEMENT
ICELAND, WHALING and ECOSYSTEM - BASED FISHERY MANAGEMENT PETER CORKERON Iceland, whaling and ecosystem-based fishery management. Peter Corkeron Ph.D. http://aleakage.blogspot.com/ 1 Introduction Icelanders look to the sea, and always have. Fishing has always been important to them, and they have a good record of attempting to ensure that their fisheries are sustainable. As the Icelandic Ministry of Fisheries stated in a declaration on 17th October 2006, “The Icelandic economy is overwhelmingly dependent on the utilisation of living marine resources in the ocean around the country. The sustainability of the utilisation is therefore of central importance for the long-term well being of the Icelandic people. For this reason, Iceland places great emphasis on effective management of fisheries and on scientific research on all the components of the marine ecosystem. At a time when many fish stocks around the world are declining, or even depleted, Iceland's marine resources are generally in a healthy state, because of this emphasis. The annual catch quotas for fishing and whaling are based on recommendations by scientists, who regularly monitor the status of stocks, thus ensuring that the activity is sustainable.”. Fisheries account for approximately 40% of the value of Iceland’s exported goods and exported services, and roughly two-thirds of Iceland's exported goods, minus services. Fisheries and fish processing account for little under 10% of Iceland’s Gross Domestic Product (GDP), down from more than 15% in 1980. With a population of just over 300,000 in 2007, Iceland is the world’s 178th largest nation, but in 2002 it was still ranked as the world’s 13th largest fisheries exporter. -
OCEANA Bycatch Summary V4.Indd
COLLATERAL DAMAGE: HOW TO REDUCE BYCATCH IN CANADA'S COMMERCIAL FISHERIES oceana.ca 2017 TABLE OF CONTENTS 01 executi ve summary 04 glossary and acronyms WHAT IS 05 bycatch is a global issue 06 Harmful gear 08 assessing canada’s bycatch problem bycatch? 10 key fi nding: hundreds of species end up as bycatch 13 key fi nding: there are big holes in the data 16 key fi nding: canada’s regulatory approach to reducing bycatch is collateral damage created by fi shing: the non- bycatch is inadequate target fi sh and ocean wildlife that are captured in nets, 17 methods for monitoring bycatch lines and other gear set for other targeted species. it may 18 msc-certi fi ed fi sheries with the most discards be discarded at sea or brought to port. 24 what’s the soluti on? 25 recommendati ons for fisheries and oceans canada globally, this includes the dolphins that are ensnared to 27 conclusions bring you canned tuna, the sea turtles caught to bring you 28 oceana canada: saving the oceans shrimp and the fl ounder thrown overboard to put seared to feed the world scallops on the menu. it also includes targeted fi sh that are too small to harvest and non-target fi sh with litt le commercial value. Quite simply, poorly managed bycatch is one of the biggest threats to the world’s oceans, contributi ng to the dramati c decline of some fi sh populati ons. Collateral Damage: 2 How to reduce bycatch in Canada’s commercial fi sheries EXECUTIVE SUMMARY Bycatch is one of the biggest threats to ocean health.