Search results

1. Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends

   . B nepBYIO O'IepeAb 3TO 6bIJIO Bbl3BaHO I1CnOJIb30BaHl1eM THmeJIOrO ceTHoro nOJIOTHa npl1 I1X ... forming codend walls while a double-layer construction consisted of two types of net materials : the net ... not be generalized. - 6 - All investigated codends were 4-wall constructions, widening in the front to form ... a standard commercial codend with 4 splitting straps made of a rope with a thickness of 30 mm (version ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Author(s): Zaucha, J.

2. A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica

   consecutive modes at 8–9, 30–40 and 50–70 mm in December, and assumed they rep- resented ... - rent work. Hubold and Tomo (1989) concluded that the opaque zone had formed by the end of sum- mer ... . Consequently, the first opaque zone formed about 0.3 years after the birthday, had a radius of only about 0.1 ... mm, and was often indistinct. The first distinct opaque zone formed when the fish was about 1.3 ... derived for both sexes combined are: L ∞ 22.1 cm SL; K 0.167 y –1; t 0 –0.4 years. Parameter estimates ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Author(s): Sutton, C.P. and P.L. Horn

3. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

   7, a concrete rec- ommendation of this study is that the lower limits of haul sample size have to be set for 30 ... of 30–50 hauls to en- sure adequate statistical precision. These results of the hierarchical Bayesian ... limit of sample size of 30–50 hauls for sufficient data precision of krill length, (ii) have ... (m m ) 90 60 30 0 Le ng th (m m ) 90 60 30 0 Le ng th (m m ) 90 60 30 0 Le ng th ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota

4. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL

   and longlining. The annual cycle was split into three seasons: (s1) 1 December–30 April, 5 Integrated stock ... assessment for Dissostichus eleginoides using CASAL (s2) 1 May–30 September, and (s3) 1 October– 30 November ... 120 and 160 hauls, each of which were of approxi- mately 30 min duration, that were randomly located ... (s 2) 0 0 0 0 0 0 0 17 6 30 6 38 0 24 1 66 L on gl in e E (f 7) M id ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Author(s): Candy, S.G and A.J. Constable

5. An index of per capita recruitment

   additional bias. On average, PCR will underestimate recruits per spawner by 30% if reasonable assumptions ... . On average, PCR will underestimate recruits per spawner by 30% if reasonable assumptions are made regarding ... . On average, PCR will underestimate recruits per spawner by 30% if reasonable assumptions are made regarding ... dans la forme de la relation fonctionnelle entre les reproducteurs et les recrues. Le PCR est biaise ... , le PCR sous-estimera les recrues par reproducteur de 30% si les hypothPses avancPes sont ... l'introduction de cycles sous la forme de relation fonctionnelle entre les reproducteurs et les recrues. Le PCR ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Author(s): Hewitt, R

6. Krill fishing in the Scotia Sea in relation to bathymetry, including the detailed distribution around South Georgia

   been in two forms; subarea or STATLANT data, and fine-scale (0.5" latitude X 1" longitude) data ... operated in water depths of about 200 and 500 m over a restricted area of about 30 x 20 km. There were ... . (1996) that the operation of the fishery in this area is likely to make some form of catch-per-unit ... characterised the area (BAS, unpublished data). This corresponds with the general pattern noted by Fedulov et ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 1–17 : Author(s): Murphy, E.J., P.N. Trathan, I. Everson, G. Parkes and F.H.J. Daunt

7. Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a

   . The combination of the assessment and tagging rate adaption methods can then form the basis of an early management ... then form the basis of an early management plan for exploratory fisheries. The accuracy of the catch limit ... of the assessment and tagging rate adaption methods can then form the basis of an early management plan ... ) binomial recapture model is assumed, and the main reason for this choice is that this is the form ... for the estimated parameters must be defined. For the example case, a quasi non-informative uni- form prior (Box ... presents a framework for per- forming proto-stock assessments for exploratory fisheries and a framework ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Author(s): Hillary, R.M

8. Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone

   , and the percentage of ‘mega-spawners’ (Pmega) with 0% as a target level or 30–40% where no upper size limit exists ... 1 Dec–30 Nov Catch levels for the constant catch scenarios (tonnes) 0, 250, 500, 750, 1 000, 2 500 ... to 0.44 and then 0.30, while the overall length-frequency dis- tribution does not change noticeably ... are strongly influenced by parameters such as the vari- ation in fishing mortality and recruitment, the form ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable

9. Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3

   , IIOnyYeHHbIMH C nOMoqbm RCnOJIb30BaHHOrO B IIpoluJIoM YpaBHeHHR. BbITe~a~owee OTCIoAa PaCXoXAeHlle B OqeHKaX ... C O ~ J ~ ~ H ~ H H ~ I M OpOneBCTBOM B 1993194 r. npeAJIo~eHb1 YpaBHeHHX PerpeCCllll An% OQeHKll rOpll30HTaJIbHOAO PaCKPbITRSI ... the first three stations (17, 20 and 21) were logged every 30 seconds and the fourth (22) every 20 seconds ... an individual tow (standard tow duration was 30 minutes), this tow was discarded completely. Using ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Author(s): Pilling, G. and G. Parkes

10. The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design

    form part of long time series. These include the BAS Core Programme (UK), the US AMLR survey (USA ... Kingdom Email - pnt@mail.nerc-bas.ac.uk R. Hewitt and D. Demer Southwest Fisheries Science Center ... of this paper is to describe the procedures used to design the synoptic survey, thereby forming a consolidated ... . over shelf areas close to some of the sub-Antarctic islands forming part of the Scotia Arc ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Author(s): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly

Pages