Report of the ICES Advisory Committee on Fishery Management and Advisory Committee on ...

290 Pages·2004·8.65 MB·English

ICES ADVICE
AVIS DU CIEM
Volume 1, Number 2

Report of the ICES Advisory
Committee on Fishery Management
and Advisory Committee on
Ecosystems, 2004

International Council for the Exploration of the Sea
Conseil International pour l’Exploration de la Mer
International Council for the Exploration of the Sea
Conseil International pour l’Exploration de la Mer

H.C. Andersens Boulevard 44-46
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Report of the ICES Advisory Committee on Fishery Management and
Advisory Committee on Ecosystems, 2004
Volume 1, Number 2
December 2004

Recommended format for purposes of citation:
ICES. 2004. Report of the ICES Advisory Committee on Fishery Management and
Advisory Committee on Ecosystems, 2004. ICES Advice. Volume 1, Number 2. 1544 pp.
For permission to reproduce material from this publication, please apply to the General Secretary.
TABLE OF CONTENTS
BOOK 1
Section Page
Part 1
Preface
Participants at Meetings, Spring and Autumn 2004
1 ICES ADVICE
1.1 Introduction..................................................................................................................................................1-1
1.2 New Report Format.....................................................................................................................................1-1
1.3 The Scientific Basis for Advice...................................................................................................................1-2
1.3.1 Ecosystem Approach...................................................................................................................1-2
1.3.2 Sector Approach..........................................................................................................................1-2
1.3.3 Assessment of the Quality Status of Ecosystems........................................................................1-3
1.4 The Form of ICES Advice...........................................................................................................................1-3
1.4.1 The Form of Advice on the state of the ecosystem......................................................................1-3
1.4.2 Sectoral advice............................................................................................................................1-3
1.4.3 Fisheries Advice .........................................................................................................................1-3
1.5 Reference Points for the Status of Fish Stocks............................................................................................1-7
1.6 Catch projections for the current and the following year.............................................................................1-7
1.7 Management Advice for Mixed Fisheries....................................................................................................1-8
1.7.1 The incorporation of ecosystem considerations...........................................................................1-9
1.8 Quality of Fishery Statistics.........................................................................................................................1-9
1.9 Information from the fishing industry........................................................................................................1-11
1.10 Environment Impact on Fish Stocks..........................................................................................................1-11
2 GENERAL ADVICE ....................................................................................................................................1-14
2.1 Answers to Special Requests.....................................................................................................................1-14
2.1.1 EC DG Fish...............................................................................................................................1-14
2.1.1.1 Answer to Special Request on Rockall Haddock........................................................1-14
2.1.1.2 Status List of EU Fish Stocks.....................................................................................1-45
2.1.1.3 Advice concerning autumn-spawning and Spring-spawning Herring in
Kattegat/Skagerrak......................................................................................................1-55
2.1.1.4 Ecosystem Impacts of Industrial Fisheries..................................................................1-58
2.1.1.5 New Information on the occurrence of and threats to cold water corals
Including also the Northwest Atlantic.........................................................................1-81
2.1.1.6 Special request to ICES on Haddock in ICES Divisions VII, VIII, IX, X,
and COPACE 34.1.1..................................................................................................1-106
2.1.2 EC DG Environment...............................................................................................................1-115
2.1.2.1 Information and advice about appropriate eco-regions for the implementation
of an ecosystem approach in European waters..........................................................1-115
2.1.3 Helsinki Commission..............................................................................................................1-132
2.1.3.1 the Status of Sea Populations in the Baltic Marine Area...........................................1-132
2.1.3.2 Marine habitat classification and mapping system for the Baltic Sea;......................1-135
2.1.4 IBSFC ..................................................................................................................................1-137
2.1.4.1 Areas within the Gotland Deep and Gdansk Deep where the hydrological
conditions allow for a successful Cod spawning in 2004..........................................1-137
2.1.4.2 Update of the catch forecast for the Cod stock in subdivisions 25-32 for 2004
based on information on catches in 2003..................................................................1-142
2.1.4.3 Evaluation of the Management Plan for Cod stocks in the Baltic Sea with
regard to the precautionary approach........................................................................1-144
2.1.4.4 Evaluation of the appropriateness of the mesh sizes allowed in the Herring trawl
fisheries in relation to the correspondence between mesh size and the Herring
population size structure............................................................................................1-151
2.1.4.5 Evaluation of the selective properties of trawls using 90º turned diamond
meshes and advice on appropriate mesh sizes corresponding to the BACOMA gear
110 mm window........................................................................................................1-153
Section Page
2.1.4.6 Advice on hook parameters in long line fisheries that corresponds with the
minimum landing size of Cod of 38 cm. Evaluation of the relations between
number of hooks fished in longline settings and discards rates................................1-154
2.1.4.7 Revision of the estimate of smolt production potential in wild Salmon rivers..........1-155
2.1.4.8 Review and evaluation of factors that are important for smolt survival in the Gulf of
Finland.......................................................................................................................1-158
2.1.4.9 Estimation of the mortality generated on Gulf of Finland Salmon in fisheries taking
place in the Main Basin.............................................................................................1-159
2.1.4.10 Information on landings and discards by fisheries in the most recent years..............1-161
2.1.5 NASCO information on North Atlantic Salmon...................................................................1-169
2.1.6 NEAFC ..................................................................................................................................1-171
2.1.6.1 Review of Sebastes mentella stock structure.............................................................1-171
2.1.6.2 Information on areas and seasons with spawning aggregations of Deep-sea species and
deep-sea habitats vulnerable to fishing activities......................................................1-172
2.1.7 OSPAR ..................................................................................................................................1-177
2.1.7.1 Ecological Quality Objectives...................................................................................1-177
2.1.7.2 Existing Methods of identifying rare, threatened, and declinging fish species.........1-250
2.1.8 Governments...........................................................................................................................1-251
2.1.8.1 Netherlands Request for advice for North Sea Plaice management.......................1-251
2.1.8.2 Iceland - Provide separate advice for each app. Sebastes mentella components in its
distribution area........................................................................................................1-252
2.1.8.3 UK sole in division VIIe (Western Channel).........................................................1-253
2.1.8.4 UK Request for advice on VIa and VIIa Nephrops................................................1-262
2.1.8.5 Norway Request for advice on Sandeel stock in the North Sea.............................1-266
2.1.8.6 Russia Norway Evaluation of the Harvest Control Rule Northeast Arctic Cod
and Haddock.............................................................................................................1-269
BOOK 1
Section Page
Part 2
3 REGIONAL ADVICE ..................................................................................................................................1-274
3.1 Northeast Arctic (Subareas I and II)........................................................................................................1-274
3.2 North-Western Areas (Division Va and Subareas XII and XIV).............................................................1-286
3.3 Faroe Islands (Division Vb).....................................................................................................................1-304
3.4 North Sea (Subarea IV), Skagerrak and Kattegat (Division IIIa) and the Eastern Channel
(Division VIId) ..................................................................................................................................1-313
3.5 Waters West of Scotland (Subarea VI)....................................................................................................1-342
3.6 The Irish Sea, the Celtic Sea and Southwest of Ireland (Divisions VIIb,c,f,g,h,j,k), Western Channel
(Division VIIe), and northern parts of the Bay of Biscay (Divisions VIIIa,b,d,e)...................................1-355
3.7 The Iberian Region (Division VIIIc and Subareas IX and X)..................................................................1-384
3.8 The Baltic ..................................................................................................................................1-404
3.9 Widely Distributed and Migratory Stocks and Populations.....................................................................1-425
3.10 Deep-water Populations and habitats.......................................................................................................1-435
BOOK 2
Section Page
Part 1
4 REVIEW OF THE STOCKS AND POPULATIONS.............................................................................................2-1
4.1 Stocks in the Northeast Arctic (Subareas I and II).......................................................................................2-1
4.1.1 Cod in Subareas I and II..............................................................................................................2-1
4.1.1.a Northeast Arctic cod....................................................................................................................2-1
4.1.1.b Norwegian coastal cod..............................................................................................................2-12
4.1.2 Northeast Arctic haddock (Subareas I and II)...........................................................................2-18
4.1.3 Northeast Arctic saithe (Subareas I and II)................................................................................2-27
4.1.4 Redfish in Subareas I and II......................................................................................................2-35
4.1.4.a Sebastes mentella in Subareas I and II......................................................................................2-35
4.1.4.b Sebastes marinus in Subareas I and II.......................................................................................2-45
4.1.5 Greenland halibut in Subareas I and II......................................................................................2-53
4.1.6 Barents Sea capelin (Subareas I and II, excluding Division IIa west of 5ºW)...........................2-62
4.1.7 Shrimp (Pandalus borealis) in Subareas I (Barents Sea) and in II (Norwegian Sea)................2-68
4.2 Stocks in North-Western Areas (Division Va and Subareas XII and XIV)...............................................2-73
4.2.1 Cod............................................................................................................................................2-73
4.2.1.a Greenland cod (ICES Subarea XIV and NAFO Subarea 1)......................................................2-73
4.2.1.b Icelandic cod (Division Va).......................................................................................................2-79
4.2.2 Icelandic haddock (Division Va)...............................................................................................2-90
4.2.3 Icelandic saithe (Division Va).................................................................................................2-101
4.2.4 Greenland halibut in Subareas V and XIV..............................................................................2-108
4.2.5 Redfish in subareas V, VI, XII and XIV.................................................................................2-119
4.2.5.a Introduction to Redfish complex.............................................................................................2-119
4.2.5.b Sebastes marinus in Subareas V, VI, XII and XIV.................................................................2-123
4.2.5.c Deep-sea Sebastes mentella on the continental shelf in Subareas V, VI and XIV..................2-130
4.2.5.d Pelagic fishery for Sebastes mentella in the Irminger Sea.......................................................2-139
4.2.6 Icelandic summer-spawning herring (Division Va).................................................................2-151
4.2.7 Capelin in the Iceland-East Greenland-Jan Mayen area (Subareas V and XIV and
Division IIa west of 5ºW)........................................................................................................2-157
4.3 Demersal stocks at the Faroe Islands (Division Vb)................................................................................2-162
4.3.1 Cod..........................................................................................................................................2-162
4.3.1.a Faroe Plateau cod (Subdivision Vb ).......................................................................................2-162
1
4.3.1.b Faroe Bank cod (Subdivision Vb)..........................................................................................2-170
2
4.3.2 Faroe haddock (Division Vb)..................................................................................................2-176
4.3.3 Faroe saithe (Division Vb)......................................................................................................2-185
4.4 North Sea (Subarea IV), Skagerrak and Kattegat (Division IIIa) and the Eastern Channel
(Division VIId) ..................................................................................................................................2-192
4.4.1 Cod in the Kattegat..................................................................................................................2-192
4.4.1.a Cod in Subarea IV (North Sea), Division VIId (Eastern English Channel)
and Division IIIa (Skagerrak)..................................................................................................2-200
4.4.2 Haddock in Subarea IV (North Sea) and Division IIIa (Skagerrak Kattegat).......................2-216
4.4.3.a Whiting in Division IIIa (Skagerrak Kattegat).....................................................................2-228
4.4.3.b Whiting in Subarea IV (North Sea) and Division VIId (Eastern Channel)..............................2-231
4.4.4.a Plaice in Division IIIa (Skagerrak Kattegat).........................................................................2-240
4.4.4.b Plaice in Subarea IV (North Sea)............................................................................................2-248
4.4.4.c Plaice in Division VIId (Eastern Channel)..............................................................................2-264
4.4.5.a Sole in Division IIIa................................................................................................................2-273
4.4.5.b Sole in Subarea IV (North Sea)...............................................................................................2-281
4.4.5.c Sole in division VIId (Eastern Channel)..................................................................................2-291
4.4.6 Saithe in Subarea IV (North Sea) Division IIIa (Skagerrak) and Subarea VI
(West of Scotland and Rockall)..............................................................................................2-300
4.4.7 Nephrops in Division IIIa (Skagerrak and Kattegat) and IV (North Sea)...............................2-312
4.4.8.a Shrimp (Pandalus borealis) in Division IIIa and Division IVa East (Skagerrak and
Norwegian Deeps)...................................................................................................................2-313
4.4.8.b Shrimp (Pandalus borealis) in Division IVa (Fladen Ground)...............................................2-319
4.4.8.c Pandalus in Farn Deeps (Division IVb)..................................................................................2-321
Section Page
Book - Part 2
4.4.9.a Herring in Subdivisions 22-24 and Division IIIa (spring spawners).......................................2.322
4.4.9.b Herring in Subarea IV, Division VIId and Division IIIa (autumn spawners)..........................2-330
4.4.10.a Sprat in Division IIIa...............................................................................................................2-343
4.4.10.b Sprat in the North Sea (Subarea IV)........................................................................................2-347
4.4.11 Mackerel (North Sea component)............................................................................................2-351
4.4.12 North Sea horse mackerel (Trachurus trachurus) (Division IIIa (eastern part),
Divisions IVb,c, VIId).............................................................................................................2-351
4.4.13 Norway pout in Subarea IV (North Sea and Division IIIa (Skagerrak Kattegat).................2-356
4.4.14 Sandeel....................................................................................................................................2-365
4.4.14.a Sandeel in Division IIIa (Skagerrak Kattegat)......................................................................2-365
4.4.14.b Sandeel in Subarea IV.............................................................................................................2-366
4.4.14.c Sandeel in the Shetland area....................................................................................................2-378
4.4.15 Atlantic Sea Bass.....................................................................................................................2-380
4.5 Stocks in Subarea VI (West of Scotland).................................................................................................2-394
4.5.1 Cod .........................................................................................................................................2-394
4.5.1.a Cod in Division VIa (West of Scotland)..................................................................................2-394
4.5.1.b Cod in Division Vib (Rockall).................................................................................................2-403
4.5.2 Haddock..................................................................................................................................2-404
4.5.2.a Haddock in Division VIa (West of Scotland)..........................................................................2-404
4.5.2.b Haddock in Division VIb (Rockall).........................................................................................2-412
4.5.3 Whiting....................................................................................................................................2-416
4.5.3.a Whiting in Division VIa (West of Scotland)...........................................................................2-416
4.5.3.b Whiting in Division VIb (Rockall)..........................................................................................2-422
4.5.4 Saithe in Subarea VI (West of Scotland and Rockall).............................................................2-423
4.5.5 Megrim in subarea VI (West of Scotland and Rockall)...........................................................2-424
4.5.6 Anglerfish in Division IIIa (Kattegat and Skagerrak), Subarea IV (North Sea) and
Subarea VI (West of Scotland and Rockall) (Lophius piscatorius and Lophius budegassa...2-428
4.5.7 Herring West of Scotland........................................................................................................2-436
4.5.7.a Herring in Division VIa (North)..............................................................................................2-436
4.5.7.b Clyde herring (Division VIa)...................................................................................................2-443
4.5.8 Norway pout in Division VIa (West of Scotland)...................................................................2-447
4.5.9 Sandeel in Division VIa...........................................................................................................2-449
4.6 Stocks in the Irish Sea (Division VIIa) Stocks in the Celtic Sea (Divisions VIIf-k), Western Channel
(Division VIIe) and northern parts of the Bay of Biscay (Divisions VIIIa,b-d, and e)...........................2-451
4.6.1.a Cod in Division VIIa (Irish Sea)..............................................................................................2-451
4.6.1.b Cod in Divisions VIIe-k..........................................................................................................2.461
4.6.2.a Haddock in Division VIIa (Irish Sea)......................................................................................2-472
4.6.2.b Haddock in Divisions VIIb-k..................................................................................................2-480
4.6.3.a Whiting in Division VIIa (Irish Sea).......................................................................................2-488
4.6.3.b Whiting in Divisions VIIe-k....................................................................................................2-493
4.6.4.a Place in Division VIIa (Irish Sea)............................................................................................2-502
4.6.4.b Celtic Sea plaice (Divisions VIIf and g)..................................................................................2-510
4.6.4.c Plaice in Division VIIe (Western Channel).............................................................................2-519
4.6.4.d Plaice Southwest of Ireland (Division VIIh-k)........................................................................2-528
4.6.4.e Plaice West of Ireland (Division VIIb,c).................................................................................2-531
4.6.5.a Sole in Division VIIa (Irish Sea).............................................................................................2-533
4.6.5.b Sole in Divisions VIIf and g (Celtic Sea)................................................................................2-541
4.6.5.c Sole in Division VIIe (Western Channel)................................................................................2-551
4.6.5.d Sole in Divisions VIIIa,b (Bay of Biscay)...............................................................................2-563
4.6.5.e Sole Southwest of Ireland (Division VIIh-k)...........................................................................2-573
4.6.5.f Sole West of Ireland (Division VIIb,c)....................................................................................2-576
4.6.6.a Irish Sea herring (Division VIIa).............................................................................................2-579
4.6.6.b Celtic Sea and Division VIIj herring.......................................................................................2-584
4.6.6.c Herring in Divisions VIa (South) and VIIb,c..........................................................................2-593
4.6.8 Sprat in divisions VIId,e..........................................................................................................2-598
4.6.9 Megrim (L. whiffiagonis) in Divisions VIIc-k and VIIIa,b,d..................................................2-601
4.6.10 Anglerfish in Divisions VIIb-k and VIIIa,b (L. piscatorius and L. budegassa)......................2-610
Section Page
Book 2 - Part 3
4.7 Stocks in the Iberian Region (Division VIIIc and Subareas IX and X)...................................................2-625
4.7.1 Hake-Southern stock (Divisions VIIIc and IXa excluding the Gulf of Cadiz)...........................2-625
4.7.2 Megrim (L. boscii and L. whiffiagonis) in Divisions VIIIc and IXa........................................2-636
4.7.3 Anglerfish in Divisions VIIIc and IXa (L. piscatorius and L. budegassa)..............................2-650
4.7.4 Mackerel in Divisions VIIIc and IXa (Southern component)..................................................2-659
4.7.5 Southern horse mackerel (Trachurus trachurus) (Division IXa).............................................2-659
4.7.6 Sardine in Divisions VIIIc and IXa.........................................................................................2-663
4.7.7 Anchovy..................................................................................................................................2-672
4.7.7.a Anchovy in Subarea VIII (Bay of Biscay)..............................................................................2-672
4.7.7.b Anchovy in division IXa.........................................................................................................2-680
4.7.8.a Nephrops in Divisions VIIIa,b (Management Area N)............................................................2-684
4.7.8.b Nephrops in Divisions VIIIc (Management Area O)...............................................................2-690
4.7.8.c Nephrops in Divisions IXa (Management Area Q).................................................................2-696
4.8 Stocks in the Baltic..................................................................................................................................2-705
4.8.1 Cod..........................................................................................................................................2-705
4.8.1.a Cod in Subdivisions 22-24 (including Subdivision 23)...........................................................2-705
4.8.1.b Cod in Subdivisions 25-32......................................................................................................2-713
4.8.2 Herring....................................................................................................................................2-721
4.8.2.a Herring in Subdivisions 22-24 and Division IIIa (spring spawners).......................................2-721
4.8.2.b Herring in Subdivisions 25-29 (excluding Gulf of Riga herring) and 32................................2-729
4.8.2.c Herring in the Gulf of Riga......................................................................................................2-737
4.8.2.d Herring in Subdivision 30, Bothnian Sea................................................................................2-744
4.8.2.e Herring in Subdivision 31, Bothnian Bay................................................................................2-752
4.8.3 Sprat in Subdivisions 22-32.....................................................................................................2-755
4.8.4 Flounder..................................................................................................................................2-764
4.8.5 Plaice.......................................................................................................................................2-768
4.8.5 Dab..........................................................................................................................................2-771
4.8.5 Turbot in Subdivisions 22 to 32..............................................................................................2-773
4.8.8 Brill in Subdivisions 22 to 32..................................................................................................2-776
4.8.9 Salmon.....................................................................................................................................2-778
4.8.9.a Salmon in the Main Basin and the Gulf of Bothnia (Subdivisions 22-31)..............................2-778
4.8.9.b Salmon in the Gulf of Finland (Subdivision 32)......................................................................2-793
4.8.10 Sea Trout.................................................................................................................................2-800
4.9 Widely Distributed and Migratory Stocks..............................................................................................2-804
4.9.1 Hake - Northern stock (Division IIIa, Subareas IV, VI and VII and Divisions VIIIa,b,d).......2-804
4.9.2 Mackerel (combined Southern, Western and North Sea spawning components).....................2-817
4.9.3 Western horse mackerel (Trachurus trachurus) (Divisions Iia, Iva, Vb, VIa
VIIa-c, e-k, VIIIa-e).................................................................................................................2-834
4.9.4 Blue whiting combined stock (Subareas I-IX, XII and XIV)...................................................2-844
4.9.5 Norwegian spring-spawning herring........................................................................................2-856
4.10 Deep-water Fisheries Resources South of 63ºN.....................................................................................2-865
4.10.1 Blue Ling (Molva dypterygia)..................................................................................................2-865
4.10.2 Ling (Molva molva)..................................................................................................................2-876
4.10.3 Tusk (Brosme brosme).............................................................................................................2-894
4.10.4 Roundnose grenadier (Coryphaenoides rupestris)...................................................................2-907
4.10.5 Black scabbardfish (Aphanopus carbo)....................................................................................2-919
4.10.6 Greater silver smelt or argentine (Argentina silus)...................................................................2-926
4.10.7 Orange Roughy (Hoplostethus atlanticus)...............................................................................2-932
4.10.8 Red seabream (Pagellus bogaraveo)........................................................................................2-941
4.10.9 Greater forkbeard (Phycis blennoides).....................................................................................2-946
4.10.10 Alfonsinos/Golden eye perch (Beryx spp.)...............................................................................2-952
4.11 Elasmobranch fishes...............................................................................................................................2-958
Section Page
Book 2 - Part 4
Introduction -North Atlantic Salmon stocks................................................................................................................2-974
Requests from NASCO to ICES..................................................................................................................................2-974
Management framework for salmon in the North Atlantic..........................................................................................2-975
Management objectives................................................................................................................................................2-976
Reference points and application of precaution...........................................................................................................2-976
5 ATLANTIC SALMON IN THE NORTH ATLANTIC AREA..........................................................................2-978
5.1 Catches of North Atlantic Salmon.........................................................................................................2-978
5.1.1 Nominal catches of salmon.......................................................................................................2-978
5.1.2 Catch and release......................................................................................................................2-978
5.1.3 Unreported catches of salmon..................................................................................................2-978
5.2 Production of farmed and ranched salmon............................................................................................2-979
5.3 Significant developments towards the management of North Atlantic salmon.....................................2-979
5.3.1 Update on the estimation of natural mortality at sea of Atlantic salmon..................................2-979
5.3.2 Alternative approach to setting Conservation Limits in Ireland...............................................2-980
5.3.3 Examining the effects of reductions in fisheries on repeat spawning in Atlantic salmon
stocks and implication for management advice........................................................................2-980
5.3.4 Long-term projections for stock rebuilding..............................................................................2-981
5.3.4.1 Impact of mixed stock fisheries on stocks with different productivities...................2-981
5.3.4.2 A Population Viability Analysis of North American and Northeast Atlantic
Commission Groups..................................................................................................2-981
5.4 Compilation of tag releases and finclip data by ICES Member Countries in 2003...............................2-982
5.5 Other developments in progress............................................................................................................2-982
5.5.1 DNA-based analysis of the composition of the Foyle fishery in Northeast Ireland................2-982
5.5.2 Developing models for forecasting salmon pre-fishery abundance at the single-stock/river
level ...................................................................................................................................2-983
5.5.3 Distribution, behavior, and migration of salmon.....................................................................2-984
6 NORTH-EAST ATLANTIC COMMISSION.....................................................................................................2-996
6.1 Status of stocks/exploitation..................................................................................................................2-996
6.2 Management objectives.........................................................................................................................2-996
6.3 Reference points ...................................................................................................................................2-996
6.3.1 Progress with setting river-specific conservation limits..........................................................2-996
6.3.2 National Conservation Limits..................................................................................................2-997
6.4 Advice on management.........................................................................................................................2-997
6.4.1 Relevant factors to be considered in management...................................................................2-998
6.5 Catch forecast for 2004..........................................................................................................................2-998
6.6 Medium- to long-term projections.........................................................................................................2-999
6.7 Comparison with previous assessment..................................................................................................2-999
6.8 NASCO has requested ICES to: describe the key events of the 2003 fisheries and the status 2-
of the stocks ...................................................................................................................................2-999
6.8.1 Fishing in the Faroese area 2002/2003 commercial fishery....................................................2-999
6.8.2 Significant events in NEAC homewater fisheries in 2003......................................................2-999
6.8.3 Gear and effort.......................................................................................................................2-1000
6.8.4 Catches .................................................................................................................................2-1000
6.8.5 Composition of catches..........................................................................................................2-1000
6.8.6 National origin of catches......................................................................................................2-1000
6.8.7 Elaboration of status of national stocks in the NEAC area....................................................2-1000
6.8.8 Survival indices......................................................................................................................2-1001
6.9 NASCO has requested ICES to: evaluate the extent to which the objectives of any significant ...................
management measures introduced in the last five years have been achieved......................................2-1001
6.10 NASCO has requested ICES to: provide estimates of bycatch of salmon in pelagic fisheries,
and advise on their reliability..............................................................................................................2-1002
6.10.1 Fisheries and gears with potential to take salmon as a bycatch.............................................2-1002
6.10.2 Methods for estimating bycatch of salmon............................................................................2-1002
6.10.3 Estimates of bycatch of salmon in pelagic fisheries..............................................................2-1003
Section Page
7 NORTH AMERICAN COMMISSION.............................................................................................................2-1014
7.1 Status of stocks/exploitation................................................................................................................2-1014
7.2 Management objectives.......................................................................................................................2-1014
7.3 Reference points .................................................................................................................................2-1014
7.4 Advice on management.......................................................................................................................2-1014
7.5 Relevant factors to be considered in management...............................................................................2-1015
7.6 Catch forecast for 2004........................................................................................................................2-1015
7.6.1 Catch advice for 2004 fisheries on 2SW maturing salmon....................................................2-1015
7.7 Medium- to long-term projections.......................................................................................................2-1015
7.7.1 Catch advice for 2005 fisheries on 2SW maturing salmon....................................................2-1015
7.8 Comparison with previous assessment and advice..............................................................................2-1016
7.9 NASCO has requested ICES to: describe the key events of the 2003 fisheries and the status of the
stocks .................................................................................................................................2-1016
7.9.1 Catch of North American salmon, expressed as 2SW salmon equivalents............................2-1016
7.9.2 Gear and effort.......................................................................................................................2-1016
7.9.3 Catches in 2003.....................................................................................................................2-1017
7.9.4 Origin and composition of catches........................................................................................2-1018
7.9.5 Elaboration on status of stocks..............................................................................................2-1018
7.9.6 Estimates of total abundance by geographic area..................................................................2-1019
7.9.6.1 Run-reconstruction estimates of spawning escapement...........................................2-1020
7.9.7 Exploitation rates...................................................................................................................2-1021
7.9.8 Pre-fisheries abundance.........................................................................................................2-1022
7.10 NASCO has requested ICES to evaluate the extent to which the objectives of any significant
management measures introduced in the last five years have been acheived......................................2-1023
7.11 NASCO has asked ICES to provide an analysis of any new biological and/or tag return data to
identify the origin and biological characteristics of Atlantic salmon caught at St. Pierre and
Miquelon .................................................................................................................................2-1023
7.12 NASCO has asked ICES to provide descriptions (gear type and fishing depth, location, and season)
for all pelagic fisheries that may catch Atlantic salmon......................................................................2-1023
7.12.1 Fisheries with bycatch potential............................................................................................2-1024
8 ATLANTIC SALMON IN THE WEST GREENLAND COMMISSION........................................................2-1042
8.1 Status of stocks/exploitation................................................................................................................2-1042
8.2 Management objectives.......................................................................................................................2-1042
8.3 Reference points..................................................................................................................................2-1043
8.4 Advice on management.......................................................................................................................2-1043
8.5 Relevant factors to be considered in management...............................................................................2-1043
8.6 Catch forecast for 2004........................................................................................................................2-1044
8.7 Medium- to long-term projections.......................................................................................................2-1045
8.8 Comparison with previous assessment and advice..............................................................................2-1045
8.9 NASCO has requested ICES to describe the events of the 2003 fishery and status of the stocks.......2-1045
8.9.1 Catch and effort in 2003........................................................................................................2-1046
8.9.2 Biological characteristics of the catches................................................................................2-1046
8.9.3 Continent of origin of catches at West Greenland.................................................................2-1047
8.9.4 NASCO has requested ICES to provide information on the origin of Atlantic salmon caught
at West Greenland at a finer resolution than continent of origin (river stocks, country,
or stock complexes)...............................................................................................................2-1047
8.9.5 Elaboration on the status of the stocks in the West Greenland Commission area.................2-1048
8.10 NASCO has requested ICES to provide a detailed explanation and critical examination of any changes
to the models used to provide catch advice.........................................................................................2-1049
8.10.1 Forecast models for pre-fishery abundance of 2SW salmon.................................................2-1050
8.11 NASCO has requested ICES, with respect to stock rebuilding, to consider and evaluate various
alternative baseline measures for use in the risk analysis....................................................................2-1052
8.12 NASCO has requested ICES to evaluate the extent to which the objectives of any significant
management measures introduced in recent years have been achieved...............................................2-1052
9 NASCO has requested ICES to identify relevent data deficiencies, monitoring needs and research
requirements, taking into account NASCO's international atlantic salmon research board's inventory of
on-going research relating to salmon mortality in the sea.................................................................................2-1071
9.1 Data deficiencies and research needs...................................................................................................2-1071