Sebastes marinus in Subareas I and II

Transcription

1 3...b Sebastes marinus in Subareas I and II State of stock/exploitation: It has not been possible to assess the state of this stock with respect to safe biological limits. Available data from the Barents Sea/Svalbard surveys and commercial CPUE on larger fish do not indicate any large recent changes in the adult stock, but the data are too noisy to detect moderate changes. Results from the coastal and fjord survey series, however, indicate a decrease also for larger fish since 99. Indices from surveys in young fish areas in the Barents Sea and Svalbard waters indicate a declining trend in recruitment. Management objectives: No explicit management objectives have been established for this stock. Reference points: No precautionary reference points have been proposed for this stock, but candidate reference points for biomass are under investigation. Advice on management: Consistent with a precautionary approach, ICES recommends that a management plan, including monitoring of the development of the stock and of the fishery, with corresponding regulations, should be developed and implemented as a prerequisite to. Relevant factors to be considered in management: The low abundance of prerecruit fish in the last year s surveys followed by a decreased survey abundance of fishable biomass confirmed by reduced commercial catches are all signs of a disturbing stock decline. Comparison with previous assessments and advice: The current assessment is just an update of last year s assessment, and all present available information confirms last year s evaluation of the stock status. Elaboration and special comment: The fishery is mainly conducted by Norway accounting for 80 90% of the total catch. Germany also has a long tradition of a trawl fishery for this species. The fish are caught mainly by trawl and gillnet, and to a lesser extent by longline, Danish seine, and handline, in that order. Some of the catches are taken in mixed fisheries together with saithe and cod. Important fishing grounds are the Møre area (Svinøy), Halten Bank, outside Lofoten and Vesterålen, and at Sleppen outside Finnmark. Except for some area restriction and bycatch regulations most of the fishery for S.marinus is at present a free fishery. This is not appropriate for the current stock situation. Source of information: Report of the Arctic Fisheries Working Group, 6 2 April 2002 (ICES CM 2002/ACFM:8). 36 ICES Cooperative Research Report No. 2

2 Catch data (Tables 3...b.): Year ICES Advice Predicted catch corresp. to advice Agreed TAC Official landings ACFM landings of S. marinus 987 Precautionary TAC Reduction in F; TAC Status quo F; TAC Status quo F; TAC Precautionary TAC If required, precautionary TAC Precautionary TAC If required, precautionary TAC If required, precautionary TAC If required, precautionary TAC If required, precautionary TAC Management plan required as prerequisite to Management plan required as prerequisite to Management plan required as prerequisite to Management plan required as prerequisite to Management plan required as prerequisite to 2003 Management plan required as prerequisite to Includes both S. mentella and S. marinus. Weights in 000 t. Sebastes marinus in Subareas I and II Landings 60 Landings in 000 t ICES Cooperative Research Report No. 2 37

3 Table 3...b. Sebastes marinus. Nominal catch (t) by countries in Subarea I and Divisions IIa and IIb combined. Year Faroe France Germany 2 Greenland Iceland Ireland Netherlands ,79 3, ,3, No speciesspecific data presently available on countries , , , Year Norway Portugal Russia 3 Spain UK (Eng. & UK Total Wales) (Scotland) 986 2,680 2, , , , No speciesspecific data presently available on countries 2, ,662, , ,97, ,072 99,872, , , ,37 77,33 8 6,6 99,9 90,99 3 8, ,6, ,66 8,03 997,82 6, , ,0 6, , 999 6,70 3, , ,036 6,2 73, , ,230 2 Includes former GDR prior to USSR prior to 99. UK(E&W)+UK(Scot.) 38 ICES Cooperative Research Report No. 2

4 Table 3...b.2 Sebastes marinus. Nominal catch (t) by countries in Subarea I. Year Faroe Germany Greenland Iceland Norway Russia UK(Eng UK Total &Wales) (Scotland) , , ,03 0 2, No speciesspecific data presently available 989, , ,263,282 99, , ,62 7 2, ,78 330, ,607 09, , , , , , , , , , , , , , ,227 2 Split on species according to reports to Norwegian authorities. 3 Based on preliminary estimates of species breakdown by area. Includes former GDR prior to 99. USSR prior to UK(E&W)+UK(Scot.) Table 3...b.3 Sebastes marinus. Nominal catch (t) by countries in Division IIa. Year Faroe France Germany Green Ire Nether Norway Port Russia Spain UK (Eng. UK Total land land lands ugal & Wales) (Scotland) ,79 3,39 8,708 2,9 0 26, ,3 2,967, , No speciesspecific data presently available , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,707 2 Split on species according to reports to Norwegian authorities. 3 Based on preliminary estimates of species breakdown by area. Includes former GDR prior to 99. USSR prior to UK(E&W)+UK(Scot.) ICES Cooperative Research Report No. 2 39

5 Table 3...b. Sebastes marinus. Nominal catch (t) by countries in Division IIb. Year Faroe Germany Greenland Norway Portugal Russia 6 Spain UK(Eng. & UK Total Wales) (Scotland) , No speciesspecific data presently available ,7, Split on species according to reports to Norwegian authorities. 3 Split on species according to the 992 catches. Based on preliminary estimates of species breakdown by area. Includes former GDR prior to USSR prior to ICES Cooperative Research Report No. 2

6 Table 3...b. Sebastes marinus in Subareas I and II. Total international landings (thousand tonnes). Year Landings Year Landings 000 t 000 t Average ICES Cooperative Research Report No. 2