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1. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   , or equal to, the precautionary assessment with some given level of confidence (for example 80%) File ... of confidence (for example 80%) ... patrol cover- age on the predictive ability of the models. In these schedules the regularity ... . Vessel Starting date Ending date One 30 44 Two 60 74 Three 90 104 Four 120 134 Five 150 164 Six ... to, the precautionary assessment with some given level of confi dence (for example 80%). Résumé Le présent document ... , pour un taux de confi ance donné (disons 80%). Ball 144 Резюме Предлагается новый метод оценки ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Author(s): Ball, I

2. Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates

   In CCAMLR Subareas 88.1 and 88.2, tag- release and -recapture data are used in an integrated age ... variability of the recapture rates are accounted for in the calculation by using CCAMLR Science, Vol. 20 ... (2013): 73–80 73 QuantIfyIng vessel performance In the ccamlr taggIng program: spatIally ... on 1 December each year, and ends when the quota has been fully caught which, in recent years, has been ... an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ... detecting tagged fish have been inconclusive due to low numbers of recaptures after controlling for spatial ... controlling for spatial and temporal variables using a case-control study design, and uses this method to ... develop relative indices for detection rate performance for vessels involved in the Antarctic toothfish ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Author(s): Mormede, S. and A. Dunn

3. Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas

   of important fish stocks. While annual recruitment is the primary factor affecting recovery, the age of first ... recruitment is the primary factor affecting recovery, the age of first recruitment is also an important ... rates from the VPA for each year. The mortality rates of each age within a year were scaled from ... the age of maximum mortality rate within that year to the lowest age of fish caught. The estimated ... fishing mortality at age was rather variable from year to year. The age of first recruitment was chosen ... estimates by age. Split-year Polish age/length tables from fishery catch samples were available ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Author(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel

4. Australian research on Antarctic bird and seal diets

   Heard and Macquarie Islands have been collected during the last seven years. Published and unpublished ... -Antarctic Heard and Macquarie Islands have been collected during the last seven years. Published ... 14) and faeces (unknown age Mawson 18 1984, Davis 150 1983 and Jan 84) and known age Jan 84-Jan 85 ... E. superba 42.60 5.20 76.90 66.30 Fish 4.15 3.60 4.70 20.00 Amphipods 29.15 58.20 0.10 0.50 Others 13.60 ... the last seven years. Published and unpublished results are collated and summarised, and several ... -hatching 2-20g, post hatching 90-100g, creche stage 110-215g 233 Diet composition (% by weight ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Author(s): Williams, R.

5. Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey

   , Australia, document, WG-Krill-90/20. SIEGEL, v. 1982. Investigation on Post Spawning Concentration ... swann depth (metres) 42 29 41 24 29 25 30 21 cr, swann depth 13 20 13 8 10 14 16 8 Mean swann ... 47 59 30 23 20 29 17 cr, mean swann length (metres) 15 16 19 7 10 7 20 4 Swann density field ... sur la zone pro spec tee et egalement parce que les estimations ainsi obtenues etaient caracterisees ... Paper Title:  Midwater trawl catchability as an aspect of a quantitative assessment of krill ... catchability and krill distribution patterns. A comparative analysis of trawl catchability for commercial ... midwater trawls and small research trawls, in this case using an Isaacs-Kidd trawl, demonstrated the ... futility of using the latter for trawl census survey biomass assessments due to their highly variable ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Author(s): Kasatkina, S.M.

6. Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region

   from 1977/78 to 1989/90, and was in its heyday from 1977/78 to 1981/82. Except for Elephant Island ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample ... these catches. The only scientific surveys of these stocks during these years were conducted by Germany in 1985 ... fishing since the closure of the region some 10 years ago. Differences in length-weight relationships ... of G. gibberifvons belonging to age classes 0-2 (Figure 6) were caught in some numbers in waters of 20-30 m off ... , b), the smaller length (age) classes were missing. In N. uossii, the first four age classes were absent from ... ., 1989) and the age, growth and feeding of some nototheniids from nearshore trammel net catches ... in our knowledge for some of the subareas are still substantial. Age and growth studies remain a major ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Author(s): Kock, K.-H., C.D. Jones and S. Wilhelms

7. Commercial krill fisheries in the Antarctic, 1973 to 1988

   ; a split-year being the twelve month period from 1 July in one year to 30 June in the next. The catch year ... 1.21 Year* 81 - 8 8 82-88 - - - - - - - - 76- 8 7 74-83 77 -87 Soviet fishery 1 - - - - 6.20 5.69 ... 1981 FIBEX (Drake Pass.) 48.1 (1195572 28.9t/nm2 8.40 *) 20.08 Kalinowski 1982 (62000 ) 20.08 BIOMASS ... 1986 FIBEX (Drake Pass.) 48.1 (70827 34.0t/nm2 9.93*) 20.08 Lillo & Guzman 1982 (182000 7.2/m3 ... :  STATLANT data reported to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ... ) are used to discern observable trends in catch and effort for the Antarctic krill (Euphausia superba ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 229–281 : Author(s): Miller, D.G.M.

8. Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990

   Paper Title:  Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken ... samples (n =140) were used in age determination. Age groups from 1+ to 9+ were present in catches. Two ... Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South ... ) were used in age determination. Age groups from 1+ to 9+ were present in catches. Two peaks in size ... WG-FSA-90/33 AGE DETERMINATION OF CHAMPSOCEPHALUS ... aux groupes de taille de 16 a 18, de 24 a 26 et de 30 a 34 cm. La determination des ages n'a ete ... . Table 2: Agellength data on C. gunnari in the South Georgia area, February 1990. Age in Years ... . Juvenile. TL=16.5 cm. Age 1+ years. 17 February 1990. Figure 3: Vertebrae of C. gunnari taken by RV ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Author(s): Kochkin, P.N.

9. Fish stock assessment survey in Subarea 48.3

   decline by comparison with results from the 1989/90 season. Other species do not show a similar dramatic ... a major decline by comparison with results from the 1989/90 season. Other species do not show a similar ... Georgia, and both sexes except where indicated. Age (years) Species 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 11.0 3.5 3.8 2.3 2.4 1.1 0.4 N. rossii 1.6 3.8 25.5 30.0 19.0 7.9 7.9 3.7 0.7 Table 11: Age ... are for South Georgia, and both sexes except where indicated. Age (years) Species 1 2 3 4 5 6 7 8 9 10 11 12 ... are for South Georgia, except where indicated. Age (years) Species 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Author(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski

10. A hybrid approach to acoustic classification and length estimation of krill

    strength in situ, an acoustic resolution volume must be based on a single animal measurement. For small ... Sea (1989/90). The new method extracts information on species and size primarily from the acoustic ... used to design and test the method were collected during three surveys in the Ross Sea (1989/90, 1997 ... ≈ . The model has the shape of a two-state low- pass fi lter with the two bends at approximately the input ... individually for each component of a vector, using classical Bayesian techniques. Classification probabilities ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Author(s): Azzali, M., I. Leonori and G. Lanciani

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