Résultats de la recherche
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.
+ + - - = - - + - - (8) Using equation (8) as the difference equa- tion for updating the cohort size at year t has the ... - tion (8), is taken as a known constant. Therefore there is no need to estimate a fishing mortality ... mortality equa- tion as seen by comparing equations (4) and (5) with equation (8). To generalise the above ... 1975 to 2020 for which YCS was estimated. Candy 8 First a population age structure was generated ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.
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Selected Scientific Papers, SC-CAMLR-SSP/3 (1986)
taken to be 100% up to age 8, the modal age class. If recruitment is assumed to be complete by this ... coefficient of natural mortality of 0.2 per year up to age 8 is assumed, this implies the schedules given in ... estimates from Kock (1985a). Two - 8 - alternative survivorship/recruitment schedules are given in ... 1.00 0.34 0.45 0.15 5 1. 00 0.67 0.37 0.36 6 1.00 0.93 0.30 0.62 7 1. 00 0.91 0.25 0.73 8 1.00 1.00 ...
Document : Site Section: Publications
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SC-CAMLR-SSP/4
taken to be 100% up to age 8, the modal age class. If recruitment is assumed to be complete by this ... coefficient of natural mortality of 0.2 per year up to age 8 is assumed, this implies the schedules given in ... estimates from Kock (1985a). Two - 8 - alternative survivorship/recruitment schedules are given in ... 1.00 0.34 0.45 0.15 5 1. 00 0.67 0.37 0.36 6 1.00 0.93 0.30 0.62 7 1. 00 0.91 0.25 0.73 8 1.00 1.00 ...
Document : Site Section: Publications
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SC-CAMLR-SSP/3
taken to be 100% up to age 8, the modal age class. If recruitment is assumed to be complete by this ... coefficient of natural mortality of 0.2 per year up to age 8 is assumed, this implies the schedules given in ... estimates from Kock (1985a). Two - 8 - alternative survivorship/recruitment schedules are given in ... 1.00 0.34 0.45 0.15 5 1. 00 0.67 0.37 0.36 6 1.00 0.93 0.30 0.62 7 1. 00 0.91 0.25 0.73 8 1.00 1.00 ...
Document : Site Section: The Organisation
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Volume 1: CCAMLR. 1990. Statistical Bulletin, Vol. 1 (1970–1979). CCAMLR, Hobart, Australia.
.................................................... . STATLANT A data 1 3 5 7 8 9 10 1 1 1 2 Total catch in the Convention Area by species and split ... data Table 8 Total catch of species groups in the Convention area by month ........................ 3 ... Total effort(hours) for species groups by arealsubarealdivision .................. 48 Figure 8 Total ... C (Tables 8 to 14) gives details of catches and effort by month reported on ST ATLANT B forms. 4 ...
Document : Site Section: Publications
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
subdivision 60, and in the 250-500 m zone in subdivisions 60-62, in the 1984/85 season (Table IV, Figure 8 ... /79 1979/80 1980/81 50-150 586 ·7 968 2 633 33 298 44 485 150-250 8 482 536 5 358 13 64) 7 124 35 ... 23 680 630 7 645 17 860 49 815 1982/8) 198)/84 50-150 457 1 316 1 773 150-250 9 672 820 31 458 ... Total 11 239 1 904 11 854 )1 745 15 862 72 604 1985/86 50-150 696 2 275 2 971 150-250 8 109 2 992 22 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Auteur(s): Mucha, M. and W. Ślósarczyk
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Status of the krill stock around Elephant Island in 1991/92 and 1992/93
modal size of cluster 1 krill was 27 mm (Figure 7) and >72% were juveniles (Figure 8). The length ... I ST-64 (D ST-62 I I ST-45 N, ST-48 ST-65 ST-50 ST-9 ST-24 ST-57 ST-2 2 ST-2 8 ST-36 ... ---50---60---70---80---90---100 (b) ST-1 - ST-2 ST-48 ST-8 l ST-2 1 ST-5 1 ST-52 ST-3 6 ST-3 7 ... ST-57 c ST-45 C ST-73 2 ST 74 ~ ~ 1 3 8 ST-8 0 ST-68 1 ST-47 ST-86 1 ST-82 ST-88 ST-66 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 7–33 : Auteur(s): Loeb, V. and V. Siegel
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By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
. gunnari et de N. larseni est estimee respectivement a 34,3 + 8,O et 19,8 + 3,7 millions d'individus ... C. gunnari u N. larseni B p e 3 y n b ~ a ~ e npunosa oqeHusaeTclr cooTseTcrBeHHo B 34,3 4 8,O r ... 30.05 10 240 15.10-16.00 8 000 25 31.05 90 250 09.40-10.15 7 000 2 5 03.06 10 200 16.20-17.20 2 000 20 ... 04.06 10 200 17.45-19.40 1 000 50 12.06 100 140 18.15-19.00 8 000 50 15.06 50 150 21.55-23.05 1 000 5 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 129–142 : Auteur(s): Pakhomov, E.A. and S.A. Pankratov
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Assessments of by-catch in trawl fisheries at Heard and McDonald Islands
) b n r2 B. murrayi %N %kg 42 19 23 3 16 3 40 9 8 1 L. squamifrons 0.1075 0.078 ... (29 out of a total 34) being less than 400 mm in length and, by these estimates, less than 8 years ... skates. Brander (1981) indicates that R. clavata matures at approximately 8 years of age. This was used ... targeting aggregations of C. g u n n a r i . Table 8 provides details of the catches of each of the main ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Auteur(s): Constable, A.J., R. Williams and W.K. de la Mare
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
le 1 : Pr in ci pa l p ar am et er s of th e m id w at er tr aw l P T 7 2/ 30 8 ... . Pa ra m et er T ra w l 72 / 30 8 V er ti ca l o pe ni ng (m ) 35 H or iz on ta l o ... a nd b io m as s in S ub ar ea 4 8. 4. C ha ra ct er is ti cs o f D en si ty ... 15 4 85 5. 0 15 8 61 3. 4 49 0 84 .1 2 28 4. 5 38 4 07 4. 0 B io m as s (t ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Auteur(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky