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Advisory Committee on Fisheries Management Advisory Committee on Fishery Management ICES CM 2002/ACFM:16 Ref. G REPORT OF THE Working Group on the Biology and Assessment of Deep-Sea Fisheries Resources Horta, the Azores, Portugal 4–10 April 2002 This report is not to be quoted without prior consultation with the General Secretary. The document is a report of an expert group under the auspices of the International Council for the Exploration of the Sea and does not necessarily represent the views of the Council. International Council for the Exploration of the Sea Conseil International pour l’Exploration de la Mer Palægade 2–4 DK–1261 Copenhagen K Denmark TABLE OF CONTENTS Section Page 1 INTRODUCTION...................................................................................................................................................... 1 1.1 Terms of Reference......................................................................................................................................... 1 2 OVERVIEW .............................................................................................................................................................. 2 2.1 Background..................................................................................................................................................... 2 2.2 Data availability .............................................................................................................................................. 3 2.3 Ongoing or recently completed research projects/programmes, and activities of non-ICES advisory groups 3 2.3.1 EC FAIR 95-655 Developing deep-water fisheries: data for their assessment and for understanding their interaction with and impact on a fragile environment (Deep-fisheries) ............ 3 2.3.2 EC DGXIV 97/84 Environment and biology of deep-water species Aphanopus carbo in NE Atlantic: basis for its management (BASBLACK) ........................................................................... 3 2.3.3 EC DGXIV 97/81 Seasonal changes in biological and ecological traits of demersal and deep-water fish species in the Azores.................................................................................................................. 4 2.3.4 EC FAIR 98/4365 Otolith microchemistry as a means of identifying stocks of deep-water demersal fish (Otomic) ..................................................................................................................... 4 2.3.5 DGXIV Study Contract 99/55 Development of elasmobranch assessment (DELASS).................... 4 2.3.6 EU project TECTAC......................................................................................................................... 4 2.3.7 EC DGXIV Study Contract: 97/059 Framework for improved European Stock Assessment (FIEFA)............................................................................................................................................. 4 2.3.8 EC DGXIV Study Contract: 99/099 Improving sampling of western and southern European Atlantic fisheries” (SAMFISH) ........................................................................................................ 5 2.3.9 EC FAIR PL 96/1304 Concerted Action: European Fish Ageing Network (EFAN)....................... 5 2.3.10 UK JNCC Contract ........................................................................................................................... 5 2.3.11 BIM Deepwater Programme 2001 ....................................................................................................5 2.3.12 PROMA collaboration ...................................................................................................................... 5 2.3.13 Spanish observer programme on the Hatton Bank (Sub-areas VI and XII, international waters)..... 5 2.3.14 EC EVK3/2001/00152- Oceanic Seamounts: an integrated study (OASIS)..................................... 6 2.3.15 Mar-Eco, a Census of Marine Life project in the northern Mid-Atlantic.......................................... 6 2.3.16 European Commission, STEFC Ad hoc working group.................................................................... 6 2.3.17 Joint NAFO/ICES/CSIRO symposium on deep-sea fisheries........................................................... 7 2.3.18 National fishery-independent surveys............................................................................................... 7 2.4 Summary of landings ...................................................................................................................................... 9 3 ASSESSMENT METHODOLOGY AND SOFTWARE ........................................................................................ 16 3.1 Methods ........................................................................................................................................................ 16 3.2 Software ........................................................................................................................................................ 17 4 PRECAUTIONARY APPROACH.......................................................................................................................... 18 5 STOCK SUMMARY ............................................................................................................................................... 19 6 GENERAL ............................................................................................................................................................... 20 6.1 Description of fisheries by nation ................................................................................................................. 20 6.1.1 Faroe Islands................................................................................................................................... 20 6.1.2 France ............................................................................................................................................. 20 6.1.3 Germany.......................................................................................................................................... 21 6.1.4 Greenland........................................................................................................................................ 21 6.1.5 Iceland............................................................................................................................................. 21 6.1.6 Norway............................................................................................................................................ 21 6.1.7 Portugal........................................................................................................................................... 22 6.1.8 Russian Federation.......................................................................................................................... 24 6.1.9 Spain ............................................................................................................................................... 28 6.1.10 Denmark 29 6.1.11 Ireland 30 6.1.12 Netherlands ..................................................................................................................................... 30 6.1.13 United Kingdom ............................................................................................................................. 31 6.2 International waters....................................................................................................................................... 31 6.3 Stock identity ................................................................................................................................................ 31 6.3.1 Categories of Deep-water species ................................................................................................... 32 6.3.2 Species/stock account ..................................................................................................................... 32 6.4 Discards ........................................................................................................................................................ 35 6.4.1 Newly reported data on discarding ................................................................................................. 35 6.4.2 Inventory of existing discard data................................................................................................... 44 i 6.5 Inventory of fish community data. ................................................................................................................ 45 7 LING (MOLVA MOLVA) ...................................................................................................................................... 47 7.1 Catch Trends ................................................................................................................................................. 47 7.2 Stocks............................................................................................................................................................ 47 7.3 Catch-effort data ........................................................................................................................................... 47 7.4 Length Distribution, Age Composition, Mean Weight and Maturity at Age ................................................ 48 7.5 Biological parameters ..................................................................................................................................
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