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

   CCAMLR areas is to model the haul-by-haul ratios of catch to effort as the response variable in a ... model (GLMM), in order to provide more efficient estimates of the standardised CPUE time series and more ... 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 ... -count variable with mean τ (e.g. the number of fi sh in the haul). Since N can be zero at a frequency ... linear mixed model (GLMM), in order to provide more effi cient estimates of the standardised CPUE time ... -vessel information as a result of the imbalance in the number of hauls in the year-by-vessel cross ... a haul. The linear predictor of the GLM incorporates, in addition to YEAR (a categorical factor ...

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

2. Krill population biology during the 1991 Chilean Antarctic krill fishery

   spermatophore had a 36.5 mm TL, 80% of the females with spermatophores had a TL larger than 45 mm. In Area B, a ... different trend. Considering all catches, the yield in terms of tonnes-per-mile and tonnes-per-hour was ... the nearest 0.01 g. Mean catch-per-hour and mean catch-per-towing time were determined from a total of ... / Description:  Population biology of Antarctic krill, Euphausia superba, was studied from samples taken in 1991 ... of 419 hauls. In Area A, a unimodal size frequency distribution was found; the size range was ... during daytime catches, thus showing a different trend. Considering all catches, the yield in terms of ... of 419, on board Kirishima which operated in the Drake Passage off the South Shetland Islands ... minimum depth of the tows where samples were taken are shown in Table 1. 3. RESULTS In Area A north ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 223–235 : Автор(ы): Mujica R., A., E. Acuña S. and A. Rivera O.

3. Do krill and salps compete? Contrary evidence from the krill fisheries

   Peninsula. Interannual and seasonal variability of the timing, duration and intensity of salp blooms and the ... presence of green krill were analysed. No relationship between salp density and the proportion of green ... krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... area, the proportion of green krill was high only when salp density was extremely low. However, no ... overall mean temperature of 1.59"C. In the Livingston Island area (Figure 5a) the predicted proportion ... green krill were analysed. No relationship between salp density and the proportion of green krill in ... limited in terms of continuity through the season. Krill trawlers are unable to cover wide areas, but ... phytoplankton. The proportion of green krill in a sample is a relative indicator of the amount of ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Автор(ы): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

4. Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea

   . By counting fine growth bands in the caudal thorns instead of broad diffuse bands, growth curves have ... ) from the Ross Sea Abstract / Description:  A previous study on the age and growth of Amblyraja ... georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... and growth in A. georgiana that is radically different from the published interpretation is presented ... . By counting fine growth bands in the caudal thorns instead of broad diffuse bands, growth curves ... . In this paper, the ageing of A. georgiana, using a larger sample size and an alternative approach ... and the rear edge of the pelvic fins; PL), sex and station. Thorns were soaked in a solu- tion of ca ... regions of the thorn unclear, producing moderate uncertainty in the count). Only 6.2% of thorns were ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Автор(ы): Francis, M.P. and M.J. Gallagher

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

   questions are raised concerning the simulation study of the Japanese krill fishery carried out by ... during FIBEX surveys. Since very little searching time is spent on layers, the utility of searching time ... data appears doubtful. Secondly, the utility of indices based on the sum of primary and secondary ... searching times (PST+SST) is also doubtful because SSTs are markedly dependent upon the type of products ... Abstract In this paper, three essential questions are raised concerning the simulation study of the ... -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 ... not cover the fishing grounds of Japanese trawlers. This causes a major inconsistency in addition to ...

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

6. Temporal variability and the interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island

   output from the Automated Penguin Monitoring System (APMS), were also examined in terms of their ... Adélie penguins at Béchervaise Island Abstract / Description:  Temporal variability in a series of CCAMLR ... . The low degree of correlation between parameters collected before incubating nest counts with those ... correlation with breeding success. Results indicate that low weights of females at the time they depart after ... mean for each parameter for male and female birds was calculated and used in the Friedman analysis of ... from the Automated Penguin Monitoring System (APMS), were also examined in terms of their correlation ... signifi cant changes in critical components of the ecosystem, so as to serve as a basis for the con ... indicator species at a number of sites in the CCAMLR Convention Area. At the inception of CEMP a suite of ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 75–90 : Автор(ы): Emmerson, L.M., J. Clarke, K.R. Kerry and C. Southwell

7. From the Editor

   Paper Title:  From the Editor File:  12editor.pdf ... , represent two of the estimates availa- ble. As the exchange reflects, there are a number of ways in which ... included in the CCAMLR-2000 Survey and forms the basis of the estimation of the precautionary yield of ... . 2007. Schedule of Conservation Measures in Force, 2007/08. CCAMLR, Hobart, Australia: 192 pp ... sides of the debate to present their comments/ reply in an open way prior to publication. In deciding ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 199

8. Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR Science, 11: 59–80 (2004)

   models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR ... = rather than excluding the whole second term in each of equations (7) and (9). Re-definitions of ... of the variance func- tion power parameter, λ, should be 1.4 rather than the 1.3 value given in ... ) more accurately recovered the value of λ used in CCAMLR Science, Vol. 16 (2009): 221–222 221 ... Erratum For the GLMM the ‘effective degrees of ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 221–222 : Автор(ы): Candy, S.G

9. Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3

   in such studies should be representative of the size range consumed by predators. File:  09morley ... holotrachys) caught as by-catch in the Patagonian toothfi sh (Dissostichus eleginoides) fishery in Subarea ... 48.3 was measured and weighed, and the usefulness of otoliths as predictors of fish size was determined ... less accurate estimates of fish length. Seasonal variations in fish mass with reproductive condition ... (Dissostichus eleginoides) fi shery in Subarea 48.3 was measured and weighed, and the usefulness of otoliths as ... under investigation. The length of fi sh chosen in such studies should be representative of the size ... INTRODUCTION Fish of the family Macrouridae (rattails and grenadiers) are regularly taken as by-catch in the ... ), reported macrourid by-catch is less, between 1–2% of the total catch weight. However, even in these ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Автор(ы): Morley, S. and M. Belchier

10. Factors to consider in developing management measures for krill

    / Description:  A brief review of the objectives of the Convention for the Conservation of Antarctic Marine ... Living Resources is given along with an outline of steps for the evolution of management procedures for ... management, modelling, indicator species, pulse fishing, and the use of open and closed areas and seasons are ... Paper Title:  Factors to consider in developing management measures for krill Abstract ... this Convention and with the following principles of conservation: (a) prevention of decrease in the ... fishery management. 3. OTHER ASPECTS OF THE CONTEXT IN WHICH CONSERVATION STRATEGIES WILL BE FORMULATED ... apparent. In the context of CCAMLR, this would mean that catches would be unregulated until such time as ... Convention for the Conservation of Antarctic Marine Living Resources is given along with an outline of ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Автор(ы): de la Mare, W.K.

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