Licence to Krill: the Little-Known World of Antarctic Fishing 2 3

Total Page:16

File Type:pdf, Size:1020Kb

Licence to Krill: the Little-Known World of Antarctic Fishing 2 3 LICENCE TO KRILL: THE LITTLE-KNOWN WORLD OF ANTARCTIC FISHING 2 3 CONTENTS Executive summary 5 Introduction 7 Creating an ocean sanctuary in the Antarctic 9 What are krill and why do they matter? 15 Which Antarctic animals depend on krill? 16 How will climate change affect krill? 17 What is driving demand for krill? 19 Who is fishing for Antarctic krill? 23 How much krill are they allowed to catch, and where? 24 Tracking the krill industry 25 What are the risks of industrial krill fishing? 27 What’s the problem with transhipping? 27 Krill fishing and the risk of: 32 a. Spills 32 b. Fire 33 c. Grounding 33 Is there such a thing as sustainable krill fishing? 34 What is Greenpeace calling for? 36 References 38 Iris Reefer in Discovery Bay, February 2018 © Daniel Beltrá / Greenpeace 4 5 EXECUTIVE SUMMARY GREENPEACE INVESTIGATIONS REVEAL immediate vicinity of penguin colonies and HOW KRILL-FISHING COMPANIES ARE whale feeding grounds. EXPANDING OPERATIONS IN THE FRAGILE ANTARCTIC OCEAN, PUTTING AN ENTIRE Crucially, krill fishing is taking place in areas FOOD WEB AT RISK. WHAT’S MORE, which have been put forward as ocean THEY ARE OFTEN INVOLVED IN FISHING sanctuaries. Such protected areas will help PRACTICES THAT COULD DAMAGE these marine ecosystems to build resilience WILDLIFE AND PROTECTED OCEAN AREAS. to the combined impacts of climate change, pollution and fishing. Penguins, whales, seals and more all depend on krill for their survival. But these small, As well as robbing marine animals of a vital shrimp-like crustaceans are threatened by food supply, industrial krill fishing in such both climate change and the growth in krill pristine waters carries huge environmental fishing, which has been driven in part by an risks. Groundings, oil spills and ship accidents increased demand for the krill oil found in such as fires all threaten the wildlife and some health supplements. fragile habitats of the Antarctic Ocean. Since 2010, the krill-fishing industry has Greenpeace’s investigation also exposes the grown steadily, with the entry of Norwegian regular use of transhipping, when a catch is companies and fishing boats, increased transferred from one vessel to another. Our catches by South Korean vessels, and the tracking of krill-fishing vessels shows that they emergence of the Chinese krill-fishing fleet. have anchored in protected waters, despite the recommendation that anchoring should Fishing for Antarctic krill is permitted in the be avoided as it can damage animals and Antarctic Ocean under the management of the structures on the seabed. Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR). The fishery For these reasons, Greenpeace is calling for is often referred to as the best-managed in the krill-fishing companies to restrict all fishing world, and is focused on the northern tip of the activity in areas under consideration as ocean Antarctic Peninsula, the South Orkneys and sanctuaries. We are also calling on krill-buying the Bransfield Strait. This closely follows the companies to stop sourcing from vessels that main krill-foraging areas for penguins, seals and continue to fish in these same areas. whales. Ultimately, we are calling for international Despite the industry’s attempts to portray collaboration between governments, itself as one of the world’s most sustainable companies and civil society to create a large- fisheries, evidence collected by Greenpeace scale network of ocean sanctuaries, including demonstrates a pattern of fishing activity in the Antarctic Ocean, to protect at least increasingly close to shore and in the 30% of the world’s oceans by 2030. Adélie Penguins and glacier ice in the Antarctic, January 2018 © Christian Åslund / Greenpeace 6 7 INTRODUCTION SITTING AT THE END OF THE WORLD, one species on which practically every animal THE ANTARCTIC OCEAN IS HOME TO A there relies: krill. BROAD DIVERSITY OF LIFE: COLONIES OF EMPEROR AND ADÉLIE PENGUINS, Krill are small, shrimp-like crustaceans which THE INCREDIBLE COLOSSAL SQUID, AND form the basis of the entire Antarctic food THE LARGEST ANIMAL ON THE PLANET, web. The main fishing grounds for krill vessels THE BLUE WHALE. THE ECOLOGY IN THE are found around the northern tip of the ANTARCTIC OCEAN HELPS TO REGULATE Antarctic Peninsula, the South Orkneys and OUR CLIMATE, AND ITS PRESERVATION the Bransfield Strait and closely follow the COULD BE VITAL TO BUFFER THE main krill foraging areas for penguins, seals WORST EFFECTS OF CLIMATE CHANGE. and whales. These iconic species are already INCREDIBLY, IT’S ONE OF THE FEW facing multiple threats from a changing ocean; MAJOR ECOSYSTEMS STILL RELATIVELY they do not need an additional strain on their UNDISTURBED BY HUMAN ACTIVITY. food supply from fishing vessels. Despite this, the Antarctic is already This expansion of krill fishing is being driven in experiencing the impacts of climate change part by an increased demand for the krill oil at one of the fastest rates on the planet. found in some health supplements. Fishing Western Antarctica, for example, is one of for Antarctic krill is still permitted in the the fastest-warming areas in the world, and Antarctic Ocean, which is not protected by the Antarctic Peninsula has experienced a the Environmental Protocol to the Antarctic temperature rise of about 3°C during the Treaty covering the Antarctic landmass but past 50 years. What’s more, the creeping is managed under the Commission for the expansion of industrial fishing is targeting the Conservation of Antarctic Marine Living Fog, mountains and humpback whales in the Antarctic, January 2018 © Christian Åslund / Greenpeace 8 9 Resources (CCAMLR). Creating a network of This report both exposes current bad fishing well-managed Antarctic ocean sanctuaries practice in ecologically sensitive waters, and would be the first step to protecting krill, the sets out why the industry should voluntarily wildlife that depend on krill, our oceans, and halt fishing in areas under consideration as our planet. ocean sanctuaries. As might be expected, there is a clear overlap between the countries most strongly opposed to marine protection and those with an active fishing industry in the region. As the largest fishery in the Antarctic Ocean, the krill industry represents a significant lobby capable of transforming or opposing efforts to create an ocean sanctuary. It has a strong presence on CCAMLR, and is also able to exert influence through trade bodies such as the Association of Responsible Krill harvesting CREATING AN companies. OCEAN SANCTUARY IN THE ANTARCTIC Submarine image of the seabed in the Antarctic, January 2018 © Greenpeace OCEAN SANCTUARIES ALLOW WILDLIFE Governments have already committed to AND ECOSYSTEMS TO RECOVER FROM protect 10% of coastal waters and marine THE COMBINED IMPACTS OF CLIMATE areas by 2020, and negotiations begin CHANGE, POLLUTION AND OVERFISHING. in September 2018 for a new UN Oceans HEALTHY OCEANS PLAY A VITAL ROLE Treaty that would enable the protection IN TRANSFORMING CO2 FROM THE of biodiversity in areas beyond national ATMOSPHERE INTO WHAT IS KNOWN jurisdiction. AS BLUE CARBON AND HELPING US TO AVOID THE WORST EFFECTS OF CLIMATE However, the Antarctic Ocean is different. CHANGE. WHEN OUR OCEANS ARE After long negotiations over the course of PROPERLY PROTECTED WE ALSO SEE the second half of the 20th century, there MORE DIVERSITY OF LIFE, AND MORE AND are already international agreements for BIGGER FISH. how the seas around Antarctica should be managed. In 2002, CCAMLR committed to For these reasons, scientists say we need to establish a network of sanctuaries in the protect 30% or more of the world’s oceans Antarctic Ocean and then in 2011 agreed by 2030 through a global network of ocean a framework through which to create it. sanctuaries.1 However, only around 5% of So unlike the majority of international the world’s oceans are currently protected.2 waters, we don’t need to wait for a new UN As the UN Oceans Assessment points out: Oceans Treaty. If we want to protect a third “urgent action on a global scale is needed to of the world’s oceans, we must seize this protect the world’s oceans from the many opportunity to create a large-scale network pressures they face”.3 of ocean sanctuaries in the Antarctic Ocean. 10 11 There is growing political momentum behind at a meeting of CCAMLR in October 2017, the creation of sanctuaries in the Antarctic. and pushed the proposal back for further CCAMLR has a mandate to protect marine life negotiations. in the Antarctic Ocean and in October 2016 created the world’s largest ocean sanctuary While this is still under consideration there in the Antarctic’s Ross Sea.4 The Commission’s are two more plans being put forward to the member states have proposed additional Commission: the EU proposal to protect the sanctuaries in East Antarctica, the Weddell Weddell Sea,5 and the Chilean and Argentine Sea and around the Antarctic Peninsula. proposal for the Western Antarctic Peninsula6 Greenpeace is calling for fishing, except for (see Figure 2). These form our next big scientific purposes, to be tightly restricted in opportunities to restrict fishing in sensitive these areas as a precautionary measure. areas and protect marine life in the Antarctic. Sadly, governments were unable to reach consensus on an East Antarctic sanctuary Atlantic Ocean Lazarev Sea Riiser-Larsen Sea Scotia Cosmonauts Sea Weddell Sea Sea Cooperation Sea Bellingshausen ANTARCTICA Sea Davis Sea Indian Ocean Amundsen Mawson Sea Sea Ross Sea D’Urville Southern Sea Ocean Somov Sea Pacific Ocean Figure 1: Seas and oceans around Antarctica Iceberg in Hope Bay in the Antarctic, January 2018 © Christian Åslund / Greenpeace 12 13 THE WEDDELL SEA OCEAN SANCTUARY PROPOSAL THE WEDDELL SEA IS ONE OF THE LAST Atlantic PRISTINE AREAS IN THE ANTARCTIC, NOT Ocean LEAST BECAUSE IT HAS SO FAR BEEN SPARED BY THE INDUSTRIAL FISHING FLEET.
Recommended publications
  • Balaenoptera Bonaerensis – Antarctic Minke Whale
    Balaenoptera bonaerensis – Antarctic Minke Whale compared to B. bonaerensis. This smaller form, termed the “Dwarf” Minke Whale, may be genetically different from B. bonaerensis, and more closely related to the North Pacific Minke Whales, and thus has been classified B. acutorostrata (Wada et al. 1991; IWC 2001). This taxonomic position, although somewhat controversial, has been accepted by the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), and the Convention on Migratory Species (CMS). Assessment Rationale The current IWC global estimate of abundance of Antarctic Dr. Meike Scheidat Minke Whales is about 500,000 individuals. The abundance estimates declined from about 700,000 for the second circumpolar set of abundance survey cruises Regional Red List status (2016) Least Concern* (1985/86 to 1990/91) to about 500,000 for the third National Red List status (2004) Least Concern (1991/92 to 2003/04). Although this decline was not statistically significant, the IWC Scientific Committee does Reasons for change No change consider these results to reflect a change. However, Global Red List status (2008) Data Deficient whether this change is genuine or attributed to greater proportions of pack ice limiting the survey extent, has not TOPS listing (NEMBA) (2007) None yet been determined. More detailed results from an CITES listing (1986) Appendix I assessment model are available for the mid-Indian to the mid-Pacific region, and suggest that the population Endemic No increased to a peak in 1970 and then declined, with it *Watch-list Data being unclear whether this decline has levelled off or is still continuing past 2000.
    [Show full text]
  • Spatial Association Between Hotspots of Baleen Whales and Demographic Patterns of Antarctic Krill Euphausia Superba Suggests Size-Dependent Predation
    Vol. 405: 255–269, 2010 MARINE ECOLOGY PROGRESS SERIES Published April 29 doi: 10.3354/meps08513 Mar Ecol Prog Ser Spatial association between hotspots of baleen whales and demographic patterns of Antarctic krill Euphausia superba suggests size-dependent predation Jarrod A. Santora1, 2,*, Christian S. Reiss2, Valerie J. Loeb3, Richard R. Veit4 1Farallon Institute for Advanced Ecosystem Research, PO Box 750756, Petaluma, California 94952, USA 2Antarctic Ecosystem Research Division, Southwest Fisheries Science Center, 3333 Torrey Pines Ct., La Jolla, California 92037, USA 3Moss Landing Marine Laboratories, 8272 Moss Landing Road, Moss Landing, California 95039, USA 4Biology Department, College of Staten Island, City University of New York, 2800 Victory Boulevard, Staten Island, New York 10314, USA ABSTRACT: We examined the spatial association between baleen whales and their principal prey, Antarctic krill Euphausia superba near the South Shetland Islands (Antarctic Peninsula) using data collected by the US Antarctic Marine Living Resources (AMLR) program during January surveys from 2003 through 2007. Whale distributions were determined using ship-based visual surveys, while data on krill distribution, abundance, and demographic characteristics were derived from net hauls. Approximately 25 000 km of transects and 500 net hauls were sampled over 5 yr. We defined hotspots based on statistical criteria to describe persistent areas of occurrence of both whales and krill. Hotspots were identified, and whales and krill length-maturity classes exhibited distinct spatial seg- regation in their distribution patterns. We found that baleen whales aggregated to krill hotspots that differed in size structure. Humpback whales Megaptera novaeangliae were associated with small (<35 mm) juvenile krill in Bransfield Strait, whereas fin whales Balaenoptera physalus were associ- ated with large (>45 mm) mature krill located offshore.
    [Show full text]
  • Bridging the Krill Divide: Understanding Cross-Sector Objectives for Krill Fishing and Conservation
    Bridging the Krill Divide: Understanding Cross-Sector Objectives for Krill Fishing and Conservation Report of an ICED-BAS-WWF workshop on UNDERSTANDING THE OBJECTIVES FOR KRILL FISHING AND CONSERVATION IN THE SCOTIA SEA AND ANTARCTIC PENINSULA REGION held at WWF’s Living Planet Centre, Woking, UK on 9th & 10th June 2014 Report compiled and edited by: Simeon Hill, Rachel Cavanagh, Cheryl Knowland, Susie Grant and Rod Downie Integrating Climate and Ecosystem Dynamics in the Southern Ocean Bridging the Krill Divide: Understanding Cross-Sector Objectives for Krill Fishing and Conservation SUMMARY In June 2014, the ICED programme, the British need to increase catch limits. Participants also agreed Antarctic Survey and WWF co-hosted a two day that the objectives of management must include a workshop entitled “Understanding the objectives for healthy krill stock and a healthy ecosystem. However, krill fishing and conservation in the Scotia Sea and they were not able to define ecosystem states that Antarctic Peninsula region” which involved participants are desirable or healthy. This reflects the gaps in the from the science, conservation, and fishing industry currently available information and the indirect nature sectors. The workshop used structured dialogue, led of the links between the krill-based ecosystem and by an independent facilitator, to explore each sector’s human well being. The workshop produced a range of objectives and information requirements for the krill- recommendations including the need to articulate a based ecosystem and to identify constructive ways for clear research and development strategy to support the three sectors to work together. The issue of krill progress in the management of the krill fishery, and fishing has previously provoked passionate debate but to improve communication between the Commission participants in this workshop showed broad cross- for the Conservation of Antarctic Marine Living sector accord.
    [Show full text]
  • Feeding and Energy Budgets of Larval Antarctic Krill Euphausia Superba in Summer
    MARINE ECOLOGY PROGRESS SERIES Vol. 257: 167–177, 2003 Published August 7 Mar Ecol Prog Ser Feeding and energy budgets of larval Antarctic krill Euphausia superba in summer Bettina Meyer1,*, Angus Atkinson2, Bodo Blume1, Ulrich V. Bathmann1 1Alfred Wegener Institute for Polar and Marine Research, Department of Pelagic Ecosystems, Handelshafen 12, 27570 Bremerhaven, Germany 2British Antarctic Survey, Natural Environment Research Council, High Cross, Madingley Road, Cambridge CB3 0ET, United Kingdom ABSTRACT: The physiological condition and feeding activity of the dominant larval stages of Eu- phausia superba (calyptopis stage III, furcilia stages I and II) were investigated from February to March 2000 at the Rothera Time Series monitoring station (67° 34’ S, 68° 07’ W, Adelaide Island, West- ern Antarctic Peninsula). A dense phytoplankton bloom (5 to 25 µg chl a l–1) occupied the mixed layer throughout the study period. The feeding of larvae was measured by incubating the animals in natural seawater. Food concentrations ranged from 102 to 518 µg C l–1 across experiments, and the mean daily C rations were 28% body C for calyptosis stage III (CIII), 25% for furcilia stage I (FI) and 15% for FII. The phytoplankton, dominated by diatoms and motile prey taxa, ranged from 8 to 79 µm in size. Across this size spectrum of diatoms, CIII cleared small cells most efficiently, as did FI to a lesser degree. FII, however, showed no clear tendency for a specific cell size. Across the measured size spectrum of the motile taxa, all larvae stages showed a clear preference towards the larger cells. Estimated C assimi- lation efficiencies were high, from 70 to 92% (mean 84%).
    [Show full text]
  • Fall Feeding Aggregations of Fin Whales Off Elephant Island (Antarctica)
    SC/64/SH9 Fall feeding aggregations of fin whales off Elephant Island (Antarctica) BURKHARDT, ELKE* AND LANFREDI, CATERINA ** * Alfred Wegener Institute for Polar and Marine research, Am Alten Hafen 26, 256678 Bremerhaven, Germany ** Politecnico di Milano, University of Technology, DIIAR Environmental Engineering Division Pza Leonardo da Vinci 32, 20133 Milano, Italy Abstract From 13 March to 09 April 2012 Germany conducted a fisheries survey on board RV Polarstern in the Scotia Sea (Elephant Island - South Shetland Island - Joinville Island area) under the auspices of CCAMLR. During this expedition, ANT-XXVIII/4, an opportunistic marine mammal survey was carried out. Data were collected for 26 days along the externally preset cruise track, resulting in 295 hrs on effort. Within the study area 248 sightings were collected, including three different species of baleen whales, fin whale (Balaenoptera physalus), humpback whale ( Megaptera novaeangliae ), and Antarctic minke whale (Balaenoptera bonaerensis ) and one toothed whale species, killer whale ( Orcinus orca ). More than 62% of the sightings recorded were fin whales (155 sightings) which were mainly related to the Elephant Island area (116 sightings). Usual group sizes of the total fin whale sightings ranged from one to five individuals, also including young animals associated with adults during some encounters. Larger groups of more than 20 whales, and on two occasions more than 100 individuals, were observed as well. These large pods of fin whales were observed feeding in shallow waters (< 300 m) on the north-western shelf off Elephant Island, concordant with large aggregations of Antarctic krill ( Euphausia superba ). This observation suggests that Elephant Island constitutes an important feeding area for fin whales in early austral fall, with possible implications regarding the regulation of (krill) fisheries in this area.
    [Show full text]
  • Little Fish, Big Impact: Managing a Crucial Link in Ocean Food Webs
    little fish BIG IMPACT Managing a crucial link in ocean food webs A report from the Lenfest Forage Fish Task Force The Lenfest Ocean Program invests in scientific research on the environmental, economic, and social impacts of fishing, fisheries management, and aquaculture. Supported research projects result in peer-reviewed publications in leading scientific journals. The Program works with the scientists to ensure that research results are delivered effectively to decision makers and the public, who can take action based on the findings. The program was established in 2004 by the Lenfest Foundation and is managed by the Pew Charitable Trusts (www.lenfestocean.org, Twitter handle: @LenfestOcean). The Institute for Ocean Conservation Science (IOCS) is part of the Stony Brook University School of Marine and Atmospheric Sciences. It is dedicated to advancing ocean conservation through science. IOCS conducts world-class scientific research that increases knowledge about critical threats to oceans and their inhabitants, provides the foundation for smarter ocean policy, and establishes new frameworks for improved ocean conservation. Suggested citation: Pikitch, E., Boersma, P.D., Boyd, I.L., Conover, D.O., Cury, P., Essington, T., Heppell, S.S., Houde, E.D., Mangel, M., Pauly, D., Plagányi, É., Sainsbury, K., and Steneck, R.S. 2012. Little Fish, Big Impact: Managing a Crucial Link in Ocean Food Webs. Lenfest Ocean Program. Washington, DC. 108 pp. Cover photo illustration: shoal of forage fish (center), surrounded by (clockwise from top), humpback whale, Cape gannet, Steller sea lions, Atlantic puffins, sardines and black-legged kittiwake. Credits Cover (center) and title page: © Jason Pickering/SeaPics.com Banner, pages ii–1: © Brandon Cole Design: Janin/Cliff Design Inc.
    [Show full text]
  • Improving Monitoring and Control of the Krill Fishery
    CCAMLR-XXV/BG xx October 2006 Original: English Agenda Item 4, 7 & 10 IMPROVING MONITORING AND CONTROL OF THE KRILL FISHERY THE ANTARCTIC AND SOUTHERN OCEAN COALITION (ASOC) _______________ This paper is presented for consideration by CCAMLR and may contain unpublished data, analyses, and/or conclusions subject to change. Data contained in this paper should not be cited or used for purposes other than the work of the CCAMLR Commission, Scientific Committee, or their subsidiary bodies without the permission of the originators/owners of the data. IMPROVING MONITORING AND CONTROL OF THE KRILL FISHERY I. Introduction – CCAMLR and krill Ecosystem management of Antarctic krill (Euphausia superba) is a central task for CCAMLR. The Scientific Committee, through its Working Group on Ecosystem Monitoring and Management (WG- EMM), is developing management procedures on krill aimed at ensuring that ecological relationships between harvested, dependent and related populations are maintained, according to Article II 3 (b) of the Convention. In addition, CCAMLR’s Ecosystem Monitoring Program (CEMP) provides information on the status of the different components of the ecosystem to be incorporated into these management procedures. Regrettably, the quality and magnitude of CCAMLR’s scientific work on krill is rarely matched by action at the Commission level to provide the necessary tools to allow adequate monitoring and control of the fishery. A review of the reports of the Scientific Committee and the Commission from the past thirteen years has been recently conducted in order to assess the profile of krill-related discussions in their respective agendas. Discussions of krill and toothfish (Dissostichus spp.), currently the highest profile species under CCAMLR management, were compared.
    [Show full text]
  • Aker Biomarine Antarctic Krill Fishery
    Food Certification International Ltd Findhorn House Dochfour Business Centre Dochgarroch Inverness, IV3 8GY United Kingdom T: +44(0)1463 223 039 F: +44(0)1463 246 380 www.foodcertint.com MSC SUSTAINABLE FISHERIES CERTIFICATION Aker Biomarine Antarctic Krill Fishery Public Certification Report January 2015 Prepared For: Aker BioMarine Antarctic Prepared By: Food Certification International Ltd Food Certification International Public Certification Report Aker Biomarine Antarctic Krill Fishery Public Certification Report November 2014 Authors: Geir Hønneland, Lucia Revenga and Andrew I. L. Payne Certification Body: Client: Food Certification International Ltd Aker BioMarine Antarctic Address: Address: Findhorn House Aker BioMarine Dochfour Business Centre Oslo Dochgarroch Norway Inverness IV3 8GY Scotland, UK Name: Fisheries Department Name: Sigve Nordrum Tel: +44(0) 1463 223 039 Tel: +47 916 30 188 Email: [email protected] Email: [email protected] Web: www.foodcertint.com i version 2.0 (01/06/13) Food Certification International Public Certification Report Aker Biomarine Antarctic Krill Fishery Contents Glossary ................................................................................................................................................ iv 1. Executive Summary ...................................................................................................................... 5 2. Authorship and Peer Reviewers .................................................................................................
    [Show full text]
  • ANNOUNCEMENTS Breaking News – Postponement of ICWL 2020
    VOLUME THIRTY THREE MARCH 2020 NUMBER ONE ANNOUNCEMENTS Breaking News – Postponement of ICWL 2020 12th International Conference and Workshop on Lobster Biology and Management (ICWL) 18-23 October 2020 in Fremantle, Western Australia The Organising Committee of the 12th ICWL workshop met on the 31 March 2020 and decided to postpone the workshop to next year due to the Covid-19 outbreak around the world. Please check the website (https://icwl2020.com.au/) for updates as we determine the timing of the next conference. The World Fisheries Congress which was planned for 11-15 October 2020 in Adelaide, South Australia (wfc2020.com.au) has also been postponed to 2021. The Department of Primary Industries and Regional Development (DPIRD) and the Western Rock Lobster (WRL) council were looking forward to hosting scientists, managers and industry participants in Western Australia in 2020. However we are committed to having the conference in September / October 2021. Don’t hesitate to contact us or the conference organisers, Arinex, if you have any questions. Please stay safe and we look forward to seeing you in 2021. Co-hosts of the workshop Nick Caputi Nic Sofoulis DPIRD ([email protected]) WRL ([email protected]) The Lobster Newsletter Volume 33, Number 1: March 2020 1 VOLUME THIRTY THREE MARCH 2020 NUMBER ONE The Lobster Newsletter Volume 33, Number 1: March 2020 2 VOLUME THIRTY THREE MARCH 2020 NUMBER ONE The Natural History of the Crustacea 9: Fisheries and Aquaculture Edited by Gustavo Lovrich and Martin Thiel This is the ninth volume of the ten-volume series on The Natural History of the Crustacea published by Oxford University Press.
    [Show full text]
  • Summer Distribution and Demography of Antarctic Krill Euphausia Superba Dana, 1852 (Euphausiacea) at the South Orkney Islands, 2011–2015
    Downloaded from orbit.dtu.dk on: Oct 23, 2019 Summer distribution and demography of Antarctic krill Euphausia superba Dana, 1852 (Euphausiacea) at the South Orkney Islands, 2011–2015 Krafft, Bjørn A.; Krag, Ludvig Ahm; Knutsen, Tor; Skaret, Georg; Jensen, Knut H. M.; Krakstad, Jens O.; Larsen, Stuart H.; Melle, Webjørn; Iversen, Svein A.; Godø, Olav R. Published in: Journal of Crustacean Biology Link to article, DOI: 10.1093/jcbiol/ruy061 Publication date: 2018 Document Version Publisher's PDF, also known as Version of record Link back to DTU Orbit Citation (APA): Krafft, B. A., Krag, L. A., Knutsen, T., Skaret, G., Jensen, K. H. M., Krakstad, J. O., ... Godø, O. R. (2018). Summer distribution and demography of Antarctic krill Euphausia superba Dana, 1852 (Euphausiacea) at the South Orkney Islands, 2011–2015. Journal of Crustacean Biology, 38(6), 682-688. https://doi.org/10.1093/jcbiol/ruy061 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. Users may download and print one copy of any publication from the public portal for the purpose of private study or research. You may not further distribute the material or use it for any profit-making activity or commercial gain You may freely distribute the URL identifying the publication in the public portal If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.
    [Show full text]
  • Protecting Antarctic Krill (PDF)
    A fact sheet from Oct 2014 Protecting Antarctic Krill The key to a healthy Southern Ocean Overview Antarctic krill (Euphausia superba) are 2½-inch-long zooplankton that form huge swarms in the waters surrounding Antarctica. Although they are tiny, krill play a vital role in supporting the Southern Ocean ecosystem by forming the base of the food web. Krill are plentiful. In fact, scientists believe the total weight of all Antarctic krill is greater than the cumulative weight of any other animal species on the planet. However, the combined effect of concentrated fishing and climate change on krill—especially near the coast of the Antarctic Peninsula—is reducing the availability of krill in the foraging area of species such as chinstrap and Adélie penguins,1 and creating a ripple effect throughout the Antarctic food web.2 Krill are caught by industrial fishing vessels, the most advanced of which vacuum up and process them on board, allowing for a large catch in a short period of time. Krill are used as an ingredient in animal feed for industrial farming and aquaculture, bait for fishing and omega-3 diet supplements for human consumption. Temperatures around the Antarctic Peninsula are rising faster than anywhere on Earth. That is causing a massive reduction in the sea ice that krill cling to and the sea ice algae they feed on. Krill abundance correlates closely with the extent of sea ice coverage from the previous year. The availability of krill during the Antarctic summer is critical to the reproductive success of a wide range of species, including several species of penguins, whales, seals, and other seabirds.
    [Show full text]
  • Variability in the Condition of Juvenile Antarctic Krill, Euphausia Superba, at the Western
    Variability in the condition of juvenile Antarctic krill, Euphausia superba, at the Western Antarctic Peninsula by Radhika Shah A THESIS submitted to Oregon State University Honors College in partial fulfillment of the requirements for the degree of Honors Baccalaureate of Science in Environmental Science (Honors Scholar) March 8, 2019 Commencement June 2019 AN ABSTRACT OF THE THESIS OF Radhika Shah for the degree of Honors Baccalaureate of Science in Environmental Science presented on March 8, 2019. Title: Variability in the condition of juvenile Antarctic krill, Euphausia superba, at the Western Antarctic Peninsula. Abstract approved:_____________________________________________________ Kim Bernard Antarctic krill, Euphausia superba, are a highly abundant zooplankton species found in the Southern Ocean. They are a key food choice for higher trophic levels and are important consumers near the base of the food web. Changes to the environment of the Western Antarctic Peninsula (WAP), as a result of warming, are altering the marine pelagic ecosystem there. The size of the krill population in the region has decreased significantly over the past 90 years. Krill preferentially select diatoms over other phytoplankton species; however, diatoms are becoming less abundant and are being replaced by cryptophytes and primnesiophytes. Diatoms are an important source of polyunsaturated fatty acids that krill use for growth and development. I investigated whether changes in the abundance of diatoms (using the algal pigment, fucoxanthin, as a proxy) or in sea ice conditions (timing of advance and retreat) were related to the size (dry weight) and condition (caloric content standardized by weight) of juvenile krill. I found that there was a significant positive relationship between caloric content of juvenile krill and their dry weight.
    [Show full text]