Résultats de la recherche

1. A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia

   . Sustainable exploitation rates should have been 20-30% of that based on age determinations from scales, in ... use of otoliths and scales in estimating tootlifish age 0 10 20 30 40 50 10 20 30 40 50 Reader l ... as year 0. The birthday of all fish was taken to be 1 July, so that the outer annulus was counted ... as one year if the fish was taken after 1 July but not before. Scales Typically, annuli on ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Auteur(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson

2. [node:field-journal-volume]:37-51

   40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 55 60 Age (years) To ta l l en gt h ... . holotrachys Species identifi cation and age estimation for M. whitsoni 44 Marriott et al. 0 10 20 30 ... linear regressions. Males y = 0.3287x + 0.511 R2 = 0.865 n = 552 0 10 20 30 40 0 20 40 60 80 100 ... ) Females y = 0.3917x - 1.9855 R2 = 0.923 n = 900 0 10 20 30 40 0 20 40 60 80 100 Total length (cm ...

   Science Journal Paper : 37–51

3. Using ecosystem monitoring data to detect impacts

   within a few years of its onset, but a fixed reference point method could have provided this sustained ... ‘trend’, a linear change to these parameters over the 20-year simulation period. Shift Trend Pcrit ... if at ≤ acrit in two or more years of a four-year refer- ence period. Summary of methods: anomalies ... 10 years 15 years all years 0.05 0.1 0.25 0.0 0.2 0.4 0.6 0.8 1.0 10th percentile Year 1984 ... years 10 years 15 years all years 0.05 0.1 0.25 0.0 0.2 0.4 0.6 0.8 1.0 10th percentile Year ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Auteur(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda

4. Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)

   krill consumed is between 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million ... calculated for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption was ... the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from ... 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million tonnes (Lubimova ... for a depth range of 100 to 500 metres in waters between 30 and 80°B. Krill consumption was estimated ... de tonnes, dont 30 a 32 sont consommees par des poissons (Lubimova and Shust, 1980; Shust, 1987 ... echelle de profondeur de 100 it 500 metres dans les eaux situees entre 30 et 800E. La consommation de ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Auteur(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk

5. The gentoo penguin as a candidate species for the CCAMLR Ecosystem Monitoring Program

   features of special relevance to the CEMP. File:  30-Croxall-and-Williams.pdf ... years at Bird Island, South Georgia and at the South Shetland Islands (both within Integrated Study ... ). Only in one year (1985) did the proportion of E. superba fall below 65%. During the winters of 1987 ... species is resident, these populations are likely to consume significant quantities of krill each year ... Biology Gentoo penguins have been quite extensively studied. The major (multi-year) studies of general ... (Wilson, 1983). The sections above on diet and general biology indicate that multi-year data are ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 483–488 : Auteur(s): Croxall, J.P. and T.D. Williams

6. Quantifying movement behaviour of vessels in the Antarctic krill fishery

   analyses demonstrate the need for high-quality year-round data on all vessels participating in the krill ... / Description:  Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... markedly over the last 20 years (Kawaguchi and Nicol, 2007). Models of the interactions between the ... high-quality year-round data on all vessels participating in the krill fishery to assist in ... of each haul, assuming 60 n miles for one degree latitude and 30 n miles for one degree longi- tude ... . The range of area considered in this paper was between 50°S–70°S and 70°W–30°W. Catch rates (Cn/tn ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Auteur(s): Kawaguchi, S. and S.G. Candy

7. Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)

   was 0.399. File:  20-Gasiukov.pdf ... different classes (countries, types of vessel, fishing gear, months and years). Multiple regression is used ... example, type of vessel, fishing division, month within year and finally fishing year may be considered ... certain year. A standardized value for catch-per-effort for a given type of category is calculated by ... formula (1), if the respective indices are substituted. Having selected 'year of fishing' as a type of ... within year; and year of fishing. The total number of all the types is 31, the volume of the set being ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Auteur(s): Gasiukov, P.S.

8. Preliminary atlas of Balaenopterid whale distribution in the Southern Ocean based on pelagic catch data

   consists of 30 maps of catches of fin whales for each season from 1952/53–1961/62 for January, February and ... March, plus three summary maps of fin whales catches for the years 1952/53–1961/62 combined, for each of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 113-193 : Auteur(s): Mizroch, S.A. et. al

9. A fine-scale model of the overlap between penguin foraging demands and the krill fishery in the South Shetland Islands and Antarctic Peninsula

   analysis, mean foraging distance for chinstrap penguins was increased by 50% (from 20 to 30 km), although ... of shore-based penguin breeding colonies each year. December to March is the peak breeding period ... colonies out to 80, 60 and 20 km (Adklie penguins, chinstrap penguins and gentoo penguins respectively ... distances of 11 to 24 km at bearings between 330" and 033" for chinstrap penguins, and 20 to 40 km at ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 99–110 : Auteur(s): Agnew, D.J. and G. Phegan

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

    Division 58.5.2), using CASAL and data consisting of multi-year random stratified trawl survey (RSTS ... CASAL and data consisting of multi-year random stratified trawl survey (RSTS) abundance estimates by ... variation (CV) for length given age, (ii) use of non-informative pri- ors for year-class strength ... seasons for the main trawl ground, (iv) separate selectivity parameters for the late (within-year ... ) season compared to the combined early (within-year) seasons (see below for a description of the within ...

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

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