ICES ADVICE 2011 AVIS DU CIEM Books 1- 11 Report of the ICES Advisory Committee, 2011 Book 1 Introduction, Overviews and Special Requests International Council for the Exploration of the Sea Conseil International pour l’Exploration de la Mer H.C. Andersens Boulevard 44-46 DK-1553 Copenhagen V Denmark Telephone (+45) 33 38 67 00 Telefax (+45) 33 93 42 15 www.ices.dk [email protected] Report of the ICES Advisory Committee, 2011. Books 1 - 11 December 2011 Recommended format for purposes of citation: ICES. 2011. Report of the ICES Advisory Committee, 2011. ICES Advice, 2011. Books 1 - 11. 1685 pp ICES. 2011. Report of the ICES Advisory Committee, 2011. ICES Advice, 2011. Book 1, 226 pp For permission to reproduce material from this publication, please apply to the General Secretary. IBSN 978-87-7482-100-7 TABLE OF CONTENTS ICES ADVICE 2011 BOOK 1 Section Page 1 INTRODUCTION, OVERVIEW AND SPECIAL REQUESTS .......................................................................... 1 1.1 About ICES ................................................................................................................................................... 1 1.2 General context of ICES advice .................................................................................................................... 2 1.3 Technical basis for the advice ..................................................................................................................... 14 1.4 Structure of the Report ................................................................................................................................ 16 1.5 Answers to non-Ecoregion specific Special Requests................................................................................. 18 1.5.1 EC DG Fish ................................................................................................................................ 18 1.5.1.1 Standing NEAFC request and EC request on Vulnerable Marine Habitats (including Hatton and Rockall Banks) (same as 1.5.4.1) ............................................................. 18 1.5.1.2 New information regarding impact of fisheries on other components of the ecosystem .................................................................................................................. 30 1.5.2 HELCOM ................................................................................................................................... 36 1.5.3 NASCO ................................................................................................................................... 36 1.5.4 NEAFC ................................................................................................................................... 36 1.5.4.1 Standing NEAFC request and EC request on Vulnerable Marine Habitats (including Hatton and Rockall Banks) (same as 1.5.1.3) ............................................................ 36 1.5.5 OSPAR ................................................................................................................................... 37 1.5.5.1 Further development of guidance on integrated monitoring and assessment of chemicals and biological effects ................................................................................ 37 1.5.5.2 EcoQO for seabird populations in Region II ........................................................... 186 1.5.5.3 Protocols for the use of ecological data from commercial video and photographic footage ..................................................................................................................... 187 1.6 General trends in the Northeast Atlantic ................................................................................................... 198 1.7 Acronyms and terminology ....................................................................................................................... 203 1.8 Maps ................................................................................................................................................. 207 1.9 List of Reviewers ...................................................................................................................................... 210 ICES Advice 2011 i BOOK 2 Section Page 2 ICELAND AND EAST GREENLAND ................................................................................................................... 1 2.1 Ecosystem Overview ...................................................................................................................................... 1 2.2 Fishery effects on benthos and fish communities ........................................................................................... 1 2.3 Assessments and advice ................................................................................................................................. 1 2.3.1 Assessments and advice regarding protection of biota and habitats ............................................... 1 2.3.2 Assessments and advice regarding fisheries................................................................................... 1 2.3.3 Special Requests ............................................................................................................................ 6 2.3.3.1 NEAFC request on redfish stock structure in the Irminger Sea ....................................... 6 2.4 Stock summaries ......................................................................................................................................... 7 2.4.1 Cod in ICES Subarea XIV and NAFO Subarea 1 (Greenland cod) ............................................... 7 2.4.2 Cod in Division Va (Icelandic cod) .............................................................................................. 15 2.4.3 Haddock in Division Va (Icelandic haddock) .............................................................................. 22 2.4.4 Saithe in Division Va (Icelandic saithe) ....................................................................................... 28 2.4.5 Greenland halibut in Subareas V, VI, XII and XIV ..................................................................... 34 2.4.6 Introduction to the redfish complex in Subareas V, VI, XII, XIV ............................................... 46 2.4.7 Golden Redfish (Sebastes marinus) in Subareas V, VI, XII and XIV ......................................... 58 2.4.8 Beaked Redfish (Sebastes mentella) in Division Va and Subarea XIV (Icelandic Slope stock) .. 65 2.4.9 Beaked Redfish (Sebastes mentella) in Subareas V, XII, XIV and NAFO Subareas 1+2 (Shallow Pelagic stock <500 m)................................................................................................... 71 2.4.10 Beaked Redfish (Sebastes mentella) in Subareas V, XII, XIV and NAFO Subareas 1+2 (Deep Pelagic stock >500 m) ................................................................................................................. 80 2.4.11 Beaked Redfish (Sebastes mentella) in subarea XIVb (Demersal) .............................................. 88 2.4.12 Capelin in Subareas V and XIV and Division IIa west of 5°W (Iceland–East Greenland–Jan Mayen area).................................................................................................................................. 95 2.4.13 Herring in Division Va (Icelandic summer-spawning herring) .................................................. 101 ii ICES Advice 2011 BOOK 3 Section Page 3 THE BARENTS SEA AND THE NORWEGIAN SEA ......................................................................................... 1 3.1 Ecosystem overview ....................................................................................................................................... 1 3.2 Human impacts on the ecosystem .................................................................................................................. 1 3.2.1 Fisheries effects on benthos and fish communities ........................................................................ 1 3.3 Assessments and advice ................................................................................................................................. 1 3.3.1 Assessments and advice regarding protection of biota and habitats ............................................... 1 3.3.2 Assessments and advice regarding fisheries................................................................................... 1 3.3.3 Special Requests ............................................................................................................................ 4 3.3.3.1 Joint Norwegian/Russian Fisheries Commission request on monitoring of the migratory pattern in the Arctic Ocean of fish stocks ........................................................................ 4 3.3.3.2 Norwegian request on Status and harvest potential of the Harp seal stocks in the Greenland Sea and the White Sea/Barents Sea, and of the Hooded seal stock in the Greenland Sea .................................................................................................................. 5 3.4 Stock summaries ....................................................................................................................................... 22 3.4.1 Cod in Subareas I and II (Northeast Arctic cod) .......................................................................... 22 3.4.2 Cod in Subareas I and II (Norwegian coastal waters cod) 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