Bulletin of the Sea Fisheries Institute 1 (155) 2002 - CEEMaR

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10 18000 15000 12000 9000 6000 3000 0 NATALIA KRASOVSKAJA 1951 1954 1957 1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996 1999 Landings, t A Polish share in the total catch, % Landings, t 100 % 80 60 40 20 0 Number of pound nets. Catch per pound net, t 250 200 150 100 50 B number of pound nets catch per pound net, t 0 1951 1954 1957 1960 1963 1966 1969 1972 1975 1978 1981 1984 1987 1990 1993 1996 1999 4 C Length anomalies, cm 3 2 1 0 -1 -2 -3 mean herring length of age-group 2-4 20.2±0.19 1951 1954 1957 1960 1963 1966 1969 1972 1975 Years 1978 1981 1984 1987 1990 1993 1996 1999 Fig. 2. Historical data of the Baltic herring fishery in theVistula Lagoon (number of pound nets and catches per pound net data (B) represent the Russian part of the basin).
Spawning of the Baltic herring in the Vistula Lagoon .... 11 Fig. 3. Polish catch percentage of the total herring catches in the Vistula Lagoon dependent on total catches, fishing effort in the Russian part of the basin and hydrological conditions. Table 3. Variability of time, duration and hydrological conditions of the herring spawning period in the Vistula Lagoon in 1951-2000 Characteristics Mean value (1951-2000) Range Standard deviation Coefficient of variation [%] Date the first spawning wave 24 III 1 II 25 IV 20.6 38.7 onset of spawning 31 III 12 II 25 IV 17.8 30.3 ending of spawning 27 V 25 IV 25 VI 13.5 11.6 onset of mass spawning 6 IV 12 II 12 V 20.2 31.3 ending of mass spawning 11 V 5 IV 1 VI 13.9 13.9 onset of age-group 2 spawning 18 IV 15 III 15 V 17.0 22.0 Duration [days] herring presence in the Lagoon 70 34 104 15.8 22.5 spawning period 57 28 90 13.6 23.8 mass spawning period 35 13 63 11.6 33.7 Mean water temperature [ 0 C] during spawning period 10.3 7.7 14.1 2.4 22.8 during mass spawning period 9.3 4.3 14.4 2.9 30.9 during spawning period of age-group 2 12.2 5.6 16.6 2.6 20.9 at the ending of spawning 15.3 6.0 19.6 2.8 14.2 at the ending of mass spawning 12.2 5.1 17.5 2.8 22.6 Water salinity during first spawning wave [psu] 3.26 1.23 4.93 0.99 30.4
Page 1 and 2: ISSN 1429-2335 Bulletin of the Sea
Page 3 and 4: BULLETIN OF THE SEA FISHERIES INSTI
Page 5 and 6: Spawning of the Baltic herring in t
Page 7 and 8: Table 1. Data characterizing the he
Page 9: Spawning of the Baltic herring in t
Page 13 and 14: Table 4. Timing (date) and duration
Page 27 and 28: 28 KORDIAN TRELLA Studies of the fe
Page 29 and 30: 30 KORDIAN TRELLA Okhotsk Magadan S
Page 31 and 32: 32 KORDIAN TRELLA Table 1. Walleye
Page 33 and 34: 34 KORDIAN TRELLA DISCUSSION Walley
Page 35 and 36: 36 KORDIAN TRELLA REFERENCES Bailey
Page 39 and 40: Evaluation of the chemical composit
Page 47 and 48: Length correction of larval and ear
Page 49 and 50: Length correction of larval and ear
Page 51 and 52: 54 SVAJUNAS STANKUS There is little
Page 53 and 54: 56 SVAJUNAS STANKUS 60 50 Length [c
Page 55 and 56: 58 SVAJUNAS STANKUS Commercial sign
Page 57 and 58: 60 SVAJUNAS STANKUS Repechka, R., S
Page 59 and 60: 62 NORBERT WOLNOMIEJSKI and IRENA G
Page 61 and 62:
64 NORBERT WOLNOMIEJSKI and IRENA G
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Page 65 and 66:
Page 67:
WSKAZÓWKI DLA AUTORÓW INFORMACJE
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Bulletin of the Sea Fisheries Institute 1 (155) 2002 - CEEMaR

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