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1. A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region

   – Antarctic Peninsula region Abstract / Description:  Expansion of the krill fishery in the Scotia Sea ... compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods. These ... species that feed on krill in this region. Maximum krill transport rates are also derived from the OCCAM ... are provided where possible. The results suggest that fish are the major krill consumers in all SSMUs ... mortality rate (Table 9). In addition, a substantial proportion of adult females do not breed each year ... biomass ratios from 2 year–1 in whales to 103 year–1 in penguins. Discussion This paper compiles ... are usually in the summer months. Extrapolating from these to other parts of the year also ... krill in one year. The total demand was divided equally between summer and winter. Whales W1. The ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Autor(es): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters

2. Brief comments on the simulation study made by Professor Butterworth on krill fishing by an individual Japanese trawler

   fishing by an individual Japanese trawler Abstract / Description:  In this paper, three essential ... questions are raised concerning the simulation study of the Japanese krill fishery carried out by ... values used for the minimum catch rate per overall elapsed time. It is suggested that an improvement in ... Abstract In this paper, three essential questions are raised concerning the simulation study of the ... elapsed time. It is suggested that an improvement in our knowledge of krill distribution is necessary ... -concentration searching times might improve the utility of the data. We commend his efforts in making the ... fishery are useful in estimating the change of within-concentration krill abundance even if searching ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 347–350 : Autor(es): Ichii, T. and Y. Endo

3. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   as a result of the imbalance in the number of hauls in the year-by-vessel cross-classification ... . Further, the inclusion of an area stratum by fishing year interaction as an additional random effect in ... CCAMLR areas is to model the haul-by-haul ratios of catch to effort as the response variable in a ... together with ‘baseline’ parameter estimates, their variance–covariance matrix, and the inverse-link ... stratum are connected by lines across the years in which the stratum was fi shed. The bar represents ... lack of obvious trends over years within strata or groupings of strata in Figure 12). Therefore ... 20 30 40 50 -0 .6 -0 .4 -0 .2 0. 0 0. 2 0. 4 0. 6 Ship index R an do n ef fe ct e st ... im at e 0 10 20 30 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Autor(es): Candy, S.G

4. Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf

   been taken mainly in depths greater than 800 m from three localised fishing grounds of deep water off ... Terra Nova Bay, Ross Island, and in the south of small-scale research unit (SSRU) 881L (adjacent to the ... in the southern Ross Sea were sub-adult and maturing fish, typically ranging from 60–130 cm in length ... available, there is no evidence for a northward contraction in the range of D. mawsoni over the course of ... for all years up to, and includ- ing, the 2007/08 fishing year. The observer data used in this report ... caught in each of the three grounds, for years where more than 10 sets were completed, is shown by year ... data for the Ross Sea fishery between the years 1996/97 and 2007/08 (Table 1). In this paper, the ... continental shelf SSRUs (881J, 881L, 881M). In the first four years most of the catch was taken from the ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Autor(es): Hanchet, S.M., S. Mormede and A. Dunn

5. Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution

   model in predicting class/bin by year frequencies is used to obtain a single, across-years, over ... random variation across years in one of the selectivity function parameters and similarly for the ... ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... empirical coefficient of variation (CV) in the proportions, with one being based on an existing CV model ... sampling of the population age structure. For each of the 20 years in a replicate, catch-at- age ... , but in this case, declining from 196 939 for year 1 to 3 061 for year 20 with a value of 100 000 at ... . These perturbations consisted of either systematic or random variation across years in one of the ... systematic or random variation across years in one of the selectivity function parameters and similarly for ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Autor(es): Candy, S.G

6. Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)

   South Georgia (Subarea 48.3) Abstract / Description:  Krill distribution in the South Georgia area and ... many aspects of its variability have been extensively described in scientific literature. A summary of ... recent findings is discussed in this paper. There has been less focus on data concerning krill biomass ... assessments. The existing uncertainty in krill biomass assessment can be largely attributed to high ... in relation to environmental conditions. Together with biomass assessments this has paved the way ... changes into the above procedure of estimation. In recent years the Isaacs-Kidd trawl has been used in ... off South Georgia Island. Rybnoe Khoziaistvo, 9: 20-21. (In Russian). HEYWOOD, R.B., I. EVERSON and ... South Georgia Island during winter seasons of 1969-1979 years. Proc. AtlantNIRO, 53: 135-150. (In ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Autor(es): Latogursky, V.I., R.R. Makarov and L.G. Maklygin

7. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

   successful measures to reduce the incidental mortality of seabirds in most of the fisheries within its ... and petrels in the CCAMLR Convention Area to inform the CCAMLR risk-assessment process. Albatross and ... petrel distribution is analysed in terms of its division into FAO areas, subareas, divisions and ... including areas managed by CCSBT, ICCAT, IOTC and WCPFC. Priority gaps in current tracking data are ... supported by at-sea records collected over a 19-year period from 1981 to 1999 (Woehler et al., 1999). In ... . Distribution of breed- ing birds in relation to year ... the incidental mortality of seabirds in most of the fisheries within its jurisdiction, and has done ... ) fishing. This paper presents an analysis of the distribution of albatrosses and petrels in the CCAMLR ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Autor(es): BirdLife International (prepared by C. Small and F. Taylor)

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

   . It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... used in fishing for them requires further research. It should first of all cover twine codends with a ... investigated fish, packed together with many other fish in the codend, could not escape as easily as in the ... tapes with a thickness of 3.5 mm and a width of 20 mm. The meshes of this codend were rectangular in ... presented in Figure 20. The selection interval for Notothenia kempi was 3.8 cm. A 50% selection level was ... - 20 - with the curve for South Orkney Island, where fish were diversified in length. The main ...

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

9. Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks

   their exploitation are considered. Using data obtained by the scouting vessel Globus engaged in regular ... the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ... operations very short hauls (under 15 minutes) are practised. Such fishing practice, together with ... substantial fluctuations of catches during scouting operations often results in yields which do not correspond ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Autor(es): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov

10. Distribution of fish larvae at South Georgia: horizontal, vertical, and temporal distribution and early life history relevant to monitoring year-class strength and recruitment

    . In winter and summer fish larvae and early juveniles were present over the continental shelf and ... abundant near the coast, but rare in oceanic waters. During winter in the 265 m deep fiord of Cumberland ... East Bay the early stages of many species were found throughout the water column. In summer only four ... species of larvae were abundant, they were found in the upper 100 m of the water column, especially the ... length is also given; this includes data from a study in the fiord of CUmberland East Bay during 20 ... abundant in CUmberland East Bay (Figure 20). Pagothenia hansoni larvae of 23-54 mm SL occurred at all ... DISTRIBUTION OF FISH LARVAE IN CUMBERLAND EAST BAY, SOUTH GEORGIA, DURING WINTER, 20 SEPTEMBER TO 5 OCTOBER ... sunset were most abundant in the upper 70 m layer and at 2-150 m depth before dawn (Figure 20). In the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 105-141 : Autor(es): North, A.W.

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