Plaice - Skagerrak and Kattegat|
Fact Sheet Title Fact Sheet |
| | Plaice - Skagerrak and Kattegat |
Plaice in Division IIIa (Skagerrak - Kattegat) |
| Data Ownership | This document provided, maintained and owned by International Council for the Exploration of the Sea (ICES) , is part of ICES Advice data collection. |
| ident Block | ident Block | | Species List: | Species Ref: en - European plaice, fr - Plie d'Europe, es - Solla europea, ru - Камбала морская |
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| ident Block Plaice - Skagerrak and Kattegat
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27.3.a | Skagerrak and Kattegat (Division 27.3.a) |
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| Aq Res | Biological Stock: Yes
Value: Sub-Regional Management unit: Yes
Reference year: 2008
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Considered a management unit: An aquatic resource or fishery is
declared as [Fishery] Management Unit if it is
effectively the focus for the application of selected
management methods and measures, within the broader
framework of a management system. According to the FAO
Glossary for Responsible Fishing, "a Fishery Management
Unit (FMU) is a fishery or a portion of a fishery
identified in a Fishery Management Plan (FMP) relevant
to the FMP's management objectives." FMU's may be
organised around fisheries biological, geographic,
economic, technical, social or ecological dimensions ,
and the makeup and attribute of a fishery management
unit depends mainly on the FMP's management
objectives. |
Jurisdictional distribution: Jurisdictional qualifier (e.g.
"shared", "shared - highly migratory") of the aquatic
resource related with its spatial distribution. |
Environmental group: Classification of the aquatic
resource according to the environmental group (e.g.
pelagic invertebrate, or demersal fish) to which the
species belong. |
Reference Year: The Reference Year is the last year considered in the stock assessment and/or fishery status. |
| | | | Habitat Bio Depth Zone: Shelf (50 m - 200 m). Vertical Dist: Demersal/Benthic. Geo Dist Geo Dist: National Water Area Overview Spatial Scale: Sub-Regional Water Area Overview  | Water Area Overview Plaice - Skagerrak and Kattegat
fao Div | 27.3.a: Skagerrak and Kattegat (Division 27.3.a) |
| | | | Water Area Overview |
Water Area OverviewPlaice - Skagerrak and Kattegat Aq Res Struct Biological Stock: Yes Bio Assess Results
Table 6.4.6.1 Plaice in Kattegat. Landings in tonnes. Working Group estimates, 1972–2008.
Year | Denmark | Sweden | Germany | Belgium | Norway | Total | 1972 | 15,504 | 348 | 77 | | | 15,929 | 1973 | 10,021 | 231 | 48 | | | 10,300 | 1974 | 11,401 | 255 | 52 | | | 11,708 | 1975 | 10,158 | 296 | 39 | | | 10,493 | 1976 | 9,487 | 177 | 32 | | | 9,696 | 1977 | 11,611 | 300 | 32 | | | 11,943 | 1978 | 12,685 | 312 | 100 | | | 13,097 | 1979 | 9,721 | 333 | 38 | | | 10,092 | 1980 | 5,582 | 313 | 40 | | | 5,935 | 1981 | 3,803 | 256 | 42 | | | 4,101 | 1982 | 2,717 | 238 | 19 | | | 2,974 | 1983 | 3,280 | 334 | 36 | | | 3,650 | 1984 | 3,252 | 388 | 31 | | | 3,671 | 1985 | 2,979 | 403 | 4 | | | 3,386 | 1986 | 2,470 | 202 | 2 | | | 2,674 | 1987 | 2,846 | 307 | 3 | | | 3,156 | 1988 | 1,820 | 210 | 0 | | | 2,030 | 1989 | 1,609 | 135 | 0 | | | 1,744 | 1990 | 1,830 | 202 | 2 | | | 2,034 | 1991 | 1,737 | 265 | 19 | | | 2,021 | 1992 | 2,068 | 208 | 101 | | | 2,377 | 1993 | 1,294 | 175 | 0 | | | 1,469 | 1994 | 1,547 | 227 | 0 | | | 1,774 | 1995 | 1,254 | 133 | 0 | | | 1,387 | 1996 | 2,337 | 205 | 0 | | | 2,542 | 1997 | 2,198 | 255 | 25 | | | 2,478 | 1998 | 1,786 | 185 | 10 | | | 1,981 | 1999 | 1,510 | 161 | 20 | | | 1,691 | 2000 | 1,644 | 184 | 10 | | | 1,838 | 2001 | 2,069 | 260 | | | | 2,329 | 2002 | 1,806 | 198 | 26 | | | 2,030 | 2003 | 2,037 | 253 | 6 | | | 2,296 | 2004 | 1,395 | 137 | 77 | | | 1,609 | 2005 | 1,104 | 100 | 47 | | | 1,251 | 2006 | 1,355 | 175 | 20 | | | 1,550 | 2007 | 1,198 | 172 | 10 | | | 1,380 | 2008 | 866 | 137 | 6 | | | 1,008 | | | | | | | | * years 1972-1990 landings refers to IIIA | | | |
Table 6.4.6.2 Plaice in Skagerrak. Landings in tonnes. Working Group estimates, 1972–2008
Year | Denmark | Sweden | Germany | Belgium | Norway | Netherlands | Total | 1972 | 5,095 | 70 | | | 3 | | 5,168 | 1973 | 3,871 | 80 | | | 6 | | 3,957 | 1974 | 3,429 | 70 | | | 5 | | 3,504 | 1975 | 4,888 | 77 | | | 6 | | 4,971 | 1976 | 9,251 | 51 | | 717 | 6 | | 10,025 | 1977 | 12,855 | 142 | | 846 | 6 | | 13,849 | 1978 | 13,383 | 94 | | 371 | 9 | | 13,857 | 1979 | 11,045 | 67 | | 763 | 9 | | 11,884 | 1980 | 9,514 | 71 | | 914 | 11 | | 10,510 | 1981 | 8,115 | 110 | | 263 | 13 | | 8,501 | 1982 | 7,789 | 146 | | 127 | 11 | | 8,073 | 1983 | 6,828 | 155 | | 133 | 14 | | 7,130 | 1984 | 7,560 | 311 | | 27 | 22 | | 7,920 | 1985 | 9,646 | 296 | | 136 | 18 | | 10,096 | 1986 | 10,645 | 202 | | 505 | 26 | | 11,378 | 1987 | 11,327 | 241 | | 907 | 27 | | 12,502 | 1988 | 9,782 | 281 | | 716 | 41 | | 10,820 | 1989 | 5,414 | 320 | | 230 | 33 | | 5,997 | 1990 | 8,729 | 779 | | 471 | 69 | | 10,048 | 1991 | 5,809 | 472 | 15 | 315 | 68 | | 6,679 | 1992 | 8,514 | 381 | 16 | 537 | 106 | | 9,554 | 1993 | 9,125 | 287 | 37 | 326 | 79 | | 9,854 | 1994 | 8,783 | 315 | 37 | 325 | 91 | | 9,551 | 1995 | 8,468 | 337 | 48 | 302 | 224 | | 9,379 | 1996 | 7,304 | 260 | 11 | | 428 | | 8,003 | 1997 | 7,306 | 244 | 14 | | 249 | | 7,813 | 1998 | 6,132 | 208 | 11 | | 98 | | 6,449 | 1999 | 6,473 | 233 | 7 | | 336 | | 7,049 | 2000 | 6,680 | 230 | 5 | | 67 | | 6,982 | 2001 | 9,045 | 125 | | | 61 | | 9,231 | 2002 | 6,470 | 140 | 3 | | 58 | | 6,671 | 2003 | 4,847 | 143 | 8 | | 74 | 1,584 | 6,656 | 2004 | 5,717 | 179 | | | 106 | 1,511 | 7,513 | 2005 | 4,515 | 144 | | | 116 | 915 | 5,690 | 2006 | 6,334 | 175 | 14 | | 142 | 1,190 | 7,855 | 2007 | 5,467 | 159 | 21 | | 100 | 1,659 | 7,406 | 2008 | 6,901 | 219 | 5 | | 79 | 403 | 7,607 |
Sci Advice
Single-stock exploitation boundaries
As in 2008, the new analysis available for this stock has not given a reason to change the advice from 2007. The advice on this stock for the fishery in 2010 is therefore the same as the advice given over the last 2 years: “Landings should not exceed the level recorded in 2006 of 9400 t.”
In addition, ICES offers the following consideration:
In 2007, ICES identified key issues that would need to be resolved before reaching further improvements in the assessment. The various surveys give a reasonably consistent result for the eastern part of the area. The status of the western part is more uncertain, due to potential mixing with North Sea plaice and limited survey coverage. The landings-at-age matrix does not show proper tracking of the cohorts, probably due to i) mixing of the IIIa stock with the North Sea plaice stock on the main fishing ground in southwestern Skagerrak, and ii) uncertainty in ageing due to low sampling levels.
In 2009, ICES still considered these issues as outstanding, although uncertainty due to age reading is likely to have decreased in the recent years.
This advice will be updated in 2011.
Year | ICESAdvice | Single-stock Exploitation Boundaries | Predicted catch corresp. to advice | Agreed TAC Kattegat | Agreed TAC Skagerrak | ICESLandings | 1992 | TAC | | 14.0 | 2.8 | 11.2 | 11.9 | 1993 | Precautionary TAC | | - | 2.8 | 11.2 | 11.3 | 1994 | If required, precautionary TAC | | - | 2.8 | 11.2 | 11.3 | 1995 | If required, precautionary TAC | | - | 2.8 | 11.2 | 10.8 | 1996 | If required, precautionary TAC | | - | 2.8 | 11.2 | 10.5 | 1997 | No advice | | - | 2.8 | 11.2 | 10.1 | 1998 | No increase in F from the present level | | 11.9 | 2.8 | 11.2 | 8.4 | 1999 | No increase in F from the present level | | 11.0 | 2.8 | 11.2 | 8.5 | 2000 | F < Fpa | | 11.8 | 2.8 | 11.2 | 8.8 | 2001 | F < Fpa | | 9.4 | 2.35 | 9.4 | 11.7 | 2002 | F < Fpa | | 8.51 | 1.62 | 6.42 | 8.7 | 2003 | F < Fpa | | 18.4 | 3.0 | 10.4 | 8.9 | 2004 | 3 | F < Fpa | 3 | 1.8 | 9.5 | 9.1 | 2005 | | F < Fpa | < 9.5 | 1.9 | 7.6 | 6.9 | 2006 | | No increase in F | < 9.6 | 1.92 | 7.68 | 9.4 | 2007 | | Maintain current TAC | <9.6 | 2.125 | 8.5 | 8.8 | 2008 | | No increase in catch | <9.4 | 2.338 | 9.350 | 8.6 | 2009 | Same advice as last year | No increase in catch | <9.4 | 2.338 | 9.350 | | 2010 | Same advice as last year | No increase in catch | <9.4 | | | | Weights in ‘000 t.1) In March 2002 ACFM revised its advice to 11.6 for both areas combined. 2) The TAC for the two areas combined was adjusted to 11 200 tonnes in mid-2002.3) Single-stock boundary and the exploitation of this stock should be conducted in the context of mixed fisheries. |
Management Management unit: Yes Sources ICES.2009.Report of the ICES Advisory Committee, 2009. ICES Advice, 2009. |
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