ICES Arbeidsgruppe for laks 28 Galway 2-1 april 28 Norske deltakere: L.P. Hansen, P. Fiske, M. Holm og V. Wennevik Generell informasjon Rådgiving Norsk informasjon
Rapporter fra Norge Nasjonal rapport Dårlig vekst av 26 smoltårgang Gytebestandsmål Stock recruitment Simulert rømming av oppdrettslaks
12, 1, 8, 6, 4, 2, Nominal catches of salmon (tonnes round fresh weight) in four North Atlantic regions, 196-27 Northern Europe Southern Europe North America Greenland & Faroes Nominal catch (t) 196 1962 1964 1966 1968 197 1972 1974 1976 1978 198 1982 1984 1986 1988 199 1992 1994 1996 1998 2 22 24 26
Nominal catch of salmon and 5-year running means in the Southern and Northern NEAC Areas, 1971 27. 5 4 5 Nominal catch (t) 4 3 5 3 2 5 2 1 5 1 5 1971 1973 1975 1977 1979 1981 1983 1985 1987 1989 1991 1993 1995 1997 1999 21 23 25 27 Southern NEAC Southern 5-year mean Northern NEAC Northern 5 year-mean
World-wide farmed Atlantic salmon production, 198-27. 1,6, 1,4, 1,2, North Atlantic Area Outside North Atlantic Area Production (t) 1,, 8, 6, 4, 2, 198 1983 1986 1989 1992 1995 1998 21 24 27 Year
Northern Europe 2, Maturing 1SW recruits,6 1SW spaw ners PFA (millions) 1,5 1,,5 Spawners (millions),5,4,3,2,1, 197 198 199 2, 197 198 199 2 2, Non -maturing 1SW recruits,4 PFA (millions) 1,5 1,,5 Spawners (millions),3,2,1,, 197 198 199 2 197 198 199 2
Southern Europe PFA (millions) 5, Maturing 1SW recruits 4, 3, 2, 1,, 197 198 199 2 Spawners (millions) 1,5 1SW spaw ners 1,,5, 197 198 199 2 3, Non -maturing 1SW recruits 1, MSW spaw ners PFA (millions) 2, 1, Spawners (millions),8,6,4,2, 197 198 199 2, 197 198 199 2
Percentage of 1SW salmon in the reported catch for Northern NEAC countries, 1987-27. 1 9 8 % 1SW 7 6 5 4 3 2 1987 199 1993 1996 1999 22 25 Iceland Finland Norw ay Russia Sw eden Northern countries
Norway (minus Tana) Estimated Returns, Spawners and Conservation limit 14 12 Returns Spaw ners + 95% cls Conservation Limit No. Returns/Spawners 1 8 6 4 2 197 1975 198 1985 199 1995 2 25
Tana Estimated Returns, Spawners and Conservation limit 16 14 Returns Spaw ners + 95% cls Conservation limit No. Returns/Spawners 12 1 8 6 4 2 197 1975 198 1985 199 1995 2 25
Advice Northern European 1SW stocks ICES considers that in the absence of specific management objectives for this stock complex the precautionary approach is to fish only on maturing 1SW salmon from rivers where stocks have been shown to be at full reproductive capacity. ICES considers that reductions in exploitation are required for as many stocks as possible, to increase the probability of the complex meeting conservation limits. Furthermore, due to the different status of individual stocks within the stock complex, mixed stock fisheries present particular threats to stock status.
Advice Northern European MSW stocks ICES considers that in the absence of specific management objectives for this stock complex the precautionary approach is to fish only on non-maturing 1SW salmon from rivers where stocks have been shown to be at full reproductive capacity. Furthermore, due to the different status of individual stocks within the stock complex, mixed stock fisheries present particular threats to stock status.
Number of gear in marine fisheries Number 2 18 16 14 12 1 8 6 4 2 1985 199 1995 2 25 Year Bagnet Bendnet Liftnet Driftnet
Nominal catch (number) Number (1) 4 35 3 25 2 15 1 5 Freshw ater Sea Total 1994 1997 2 23 26 Year
Nominal catch by size group Number (1) 3 25 2 15 1 5 <3kg 3-7kg >7kg 1994 1996 1998 2 22 24 26 28 Year
CPUE (Number of salmon caught per day) in bagnets) <3 kg CPUE 3-7 kg 2,5 >7 kg 2, 1,5 1,,5, 1997 1999 21 23 25 27 Year
CPUE CPUE (Number of salmon caught per day) in bend nets <3 kg 3-7 kg 1,5 >7 kg 1,,5, 1997 1999 21 23 25 27 Year
12 Beregnet innsig av ensjøvinterlaks (røde stiplet linjer) og flersjøvinterlaks (svarte heltrukne linjer) til kysten av Norge i perioden 1983-26. Linjene angir øvre og nedre grense for 95 % konfidensintervall fra simuleringene. 1 8 Antall laks 6 4 2 1985 199 1995 2 25
Production of farmed salmon in Norway 7 6 5 Tonnes 4 3 2 1 198 1984 1988 1992 1996 2 24 28 Year
Farmed salmon in marine fisheries 6 5 Coast Fjord Proportion (% 4 3 2 1 1988 199 1992 1994 1996 1998 2 22 24 26 28 Year
Farmed salmon in freshwater Proprtion (% 4 Summer 35 Fall 3 25 2 15 1 5 1988 199 1992 1994 1996 1998 2 22 24 26 28 Year
Estimated catches of wild and farmed salmon 35 3 Wild Farmed Number (1) 25 2 15 1 5 1988 199 1992 1994 1996 1998 2 22 24 26 28 Year
River Imsa
Marine exploitation of the Imsa salmon Exploitation (% Imsw 1SW 1 Imsw 2 SW 9 8 Imsh 1SW 7 Imsh 2SW 6 5 4 3 2 1 1984 1987 199 1993 1996 1999 22 25 28 Year
River Drammen
Marine exploitation of the River Drammen salmon Exploitation (% 9 8 7 6 5 4 3 2 1 Drah 1SW Drah 2SW 1984 1987 199 1993 1996 1999 22 25 28 Year
Exploitation of salmon in the Drammen River Exploitation (% 6 5 4 3 2 1 Downstream the Fish ladder Upstream the fish ladder 1984 1987 199 1993 1996 1999 22 25 28 Year
Exploitation (% 5 4 3 2 1 Exploitation of salmon River Orkla River Målselv 199 1992 1994 1996 1998 2 22 24 26 28 Year
Exploitation of salmon Exploitation (%) 6 5 4 3 2 1 River Nausta River Øyenså 1996 1998 2 22 24 26 28 Year
Survival of wild salmon River Imsa 1SW 2 River Imsa 2SW Survival (%) 15 1 5 198 1984 1988 1992 1996 2 24 28 Smolt year
Survival of wild salmon Survival (%) 7 6 5 4 3 2 1 1986 199 1994 1998 22 26 Smolt year River Halselva 1SW River Halselva 2SW
Survival of hatchery reared smolts Survival (%) 14 12 1 8 6 4 2 River Imsa 1SW River Imsa 2SW 198 1984 1988 1992 1996 2 24 28 Smolt year
Survival of hatchery reared smolts Survival (%) 2,5 2 1,5 1,5 R. Hals 1SW R. Hals 2SW 1986 199 1994 1998 22 26 Smolt year
Survival of hatchery reared smolts Survival (%) 7 6 5 4 3 2 1 R. Drammen 1SW R. Drammen 2SW 1983 1988 1993 1998 23 28 Smolt year
River Drammen 1983-27 Mean weight (kg) of salmon < 3 kg 2.4 2.3 2.2 2.1 2. 1.9 1.8 1.7 1.6 R 2 =.4874 1.5 198 1985 199 1995 2 25 21
Norway total Standarised weight of 1SW salmon 2 rivers, 2154 salmon
Norway 1989 27 8 7 PFA maturing 1 SW Norway 6 5 4 3 r 2 =.72 2 1-2. -1.5-1. -.5..5 1. 1.5 Standardized weight
River Drammen 1985-27 7 Estimated survival of 1 SW salmon (%) 6 5 4 3 2 1 r 2 =.26 1.6 1.7 1.8 1.9 2. 2.1 2.2 2.3 2.4 Mean weight of salmon < 3 kg
Tilvekst det første året i sjøen for 1-sjøvinterlaks av smoltårsklassene som er blitt fanget under sportsfisket i Sogn og Fjordane samlet (smolt fra 1998-26), Åelva i Nordfjord (1991-26) og Suldalslågen i Rogaland (1978-26) (Urdal 28) Tilvekst 1. år i sjø (cm) 42 4 38 36 34 32 3 28 26 24 S. & Fj. samla Suldalslågen Åelva 198 1985 199 1995 2 25 Smoltårgang
Fangst av smålaks (< 3 kg) i Sogn og Fjordane sammenlignet med tilveksten det første året i sjøen for en-sjøvinter laks. Årstallene i figuren viser til smoltårsklasser. (Urdal 28). Fangst av smålaks 4 35 3 25 2 15 1 5 1999 25 1998 26 21 22 23 2 24 r² =,82 p <,1 26 28 3 32 34 36 38 Tilvekst (cm)
PFA Norge 12 1 8 Antall laks 6 4 2 1985 199 1995 2 25
Prognoser for mellom- og storlaks innsig til tre regioner i Norge for 28 i antall tusen, samt for Nord-Norge unntatt Tana. Region Sør Midt Nord Nord uten Tana Størrelsesgruppe Mellom Stor Mellom Stor Mellom Stor Mellom Stor Snitt estimat (1993-27) 52 1 67 24 58 34 37 17 Estimat 27 64 12 54 26 72 32 5 24 Prediksjon 28 33 11 48 24 35 39 23 21 95% konfidensintervall 14-51 9-13 26-7 22-33 13-57 34-43 12-34 17-26 Med ord Betydelig under middels, en halvering i forhold til fjoråret Middels, trolig litt dårligere enn fjoråret Godt under middels, dårligere enn fjoråret Middels, litt dårligere enn fjoråret Betydelig under middels, en halvering i forhold til fjoråret Over middels, bedre enn fjoråret Betydelig under middels, en halvering i forhold til fjoråret Over middels, på nivå med fjoråret
PFA prediksjon og estimat basert på fangstene i 27 Region Størrelsesgruppe Prediksjon før 27 sesongen Estimat 27 på bakgrunn av fangstene Sør Mellomlaks 52 64 Storlaks 13 12 Midt Mellomlaks 59 54 Storlaks 28 26 Nord Mellomlaks 63 72 Storlaks 31 32 Nord uten Tana Mellomlaks 46 5 Storlaks 2 24