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1. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

   those from scientific data (Siegel et al., 1997) and showed a close relationship to sea-ice indices ... . CPUE (catch/towing volume) in the Livingston Island area showed a decreasing trend during the study ... period. The use of different fishing strategies in response to a demand for higher product quality and a ... those from scientific data (Siegel et al., 1997) and showed a close relationship to sea-ice indices ... . CPUE (catch/towing volume) in the Livingston Island area showed a decreasing trend during the study ... period. The use of different fishing strategies in response to a demand for higher product quality and a ... densite de krill dans la region etudiee. Par contre, la CPUE dans le secteur de l'ile ~ l e ~ h a n t ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Autor(es): Kawaguchi, S., T. Ichii and M. Naganobu

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

   opening (and, thus, swept area) of a bottom trawl are discussed. In situ measurements of the FP-120 trawl ... around South Georgia are estimated using a new regression equation. The results of this calculation are ... compared to values obtained from a previous equation. The resulting difference in biomass estimates is of ... the order of a 10 to 14% increase, depending upon species. File:  04pilling-parkes.pdf ... C C A M L R Science, Vol. 2 (1995): 51-69 PERFORMANCE ... , swept area) of a bottom trawl are discussed. In situ measurements of the FP-120 trawl used during the ... South Georgia are estimated using a new regression equation. The results of this calculation are ... compared to values obtained from a previous equation. The resulting difference in biomass estimates is of ...

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

3. An assessment of CCAMLR measures employed to mitigate seabird mortality in longlining operations for Dissostichus eleginoides around South Georgia

   between the Governments of the United Kingdom and Chile, a UK observer was placed aboard a Chilean ... deck lights were extinguished and no offal was discarded during setting. A streamer line made to CCAMLR ... during hauling using a randomised cluster sampling method, developed to allow representative data to be ... collected when 100% observer coverage could not be achieved: A total of 12 dead seabirds were recorded ... agreement between the Governments of the United Kingdom and Chile, a UK observer was placed aboard a ... intervals along the line, all deck lights were extinguished and no offal was discarded during setting. A ... night-time setting. Data were recorded during hauling using a randomised cluster sampling method ... , developed to allow representative data to be collected when 100% observer coverage could not be achieved: A ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 217–230 : Autor(es): Ashford, J.R. and J.P. Croxall

4. Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program

   :  A potential method is presented for combining data collected as part of the CCAMLR ecosystem ... monitoring program (CEMP) into a single index for each of predator, prey and environmental parameters. The ... covariance between parameters. The second part reports on a Monte Carlo simulation study that examines the ... that missing values were unlikely to be a problem for time series of parameters that are highly ... Ecological Research 17 Igluna Street, Kenmore 4069 Queensland, Australia A. J. Constable (Corresponding ... A potential method is presented for combining data collected as part of the CCAMLR ecosystem ... monitoring program (CEMP) into a single index for each of predator, prey and environmental parameters. The ... covariance between parameters. The second part reports on a Monte Carlo simulation study that examines the ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 101–117 : Autor(es): de la Mare, W.K. and A.J. Constable

5. Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia

   with an approximately linear relationship existing between depth and fish length. A statistically ... both up and down slope at particular times of year. Months with a high mean length at depth are May and ... August, and with a low mean length at depth- April and July. Examination of maturity data suggests that ... in addition to a major spawning event in late July/August, there may be a small spawning event in ... , A. Watson, K. Berkieta and J. Pearce Marine Resources Assessment Group Ltd 47 Prince's Gate ... length. A statistically significant pattern of changing mean length at depth with month was detected ... , suggesting movement of animals both up and down slope at particular times of year. Months with a high mean ... length at depth are May and August, and with a low mean length at depth - April and July. Examination of ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Autor(es): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce

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

   temporally controlled measures of tag-detection rates Abstract / Description:  A reliable commercial fish ... tagging program is critical to the successful management of a number of toothfish fisheries in Antarctica ... and temporal confounding. This paper presents a method that utilised most of the data while also ... controlling for spatial and temporal variables using a case-control study design, and uses this method to ... significant differences in the relative performance between vessels. In this analysis a case-control study ... the rest of the fleet. The scaled number of tags recaptured by a given vessel (case) is divided by ... the number of tags recaptured by a subset of the data (con- trol). Scaling is carried out for each ... A. Dunn National Institute of Water and Atmospheric Research (NIWA) Ltd Private Bag 14901 ...

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

7. Species identification and age estimation for the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea

   and Atmospheric Research (NIWA). Two species were found, Macrourus whitsoni and M. holotrachys. A ... the readings, separately by sex. M. whitsoni appears to be a slowgrowing and long-lived species ... , living to at least 50 years. Females grow at a faster rate, and reach a larger size, than males, but both ... exhibited a degree of sexual dimorphism. The age at which 50% of fish are sexually mature was estimated to ... Research (NIWA). Two species were found, Macrourus whitsoni and M. holotrachys. A previously aged sample ... readings, separately by sex. M. whitsoni appears to be a slow- growing and long-lived species, living to ... at least 50 years. Females grow at a faster rate, and reach a larger size, than males, but both ... exhibited a degree of sexual dimorphism. The age at which 50% of fi sh are sexually mature was estimated ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 37–51 : Autor(es): Marriott, P., P.L. Horn and P. McMillan

8. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

   a pot fishing method to catch Patagonian toothfish (Dissostichus eleginoides) around South Georgia ... method successfully caught D. eleginoides, there was a large by-catch of crab species. The catch rate of ... eliminated bird by-catch. To capitalise on this feature, there is a need to improve the commercial viability ... of the method and minimise the quantity of by-catch. A number of potential changes are suggested to ... period March to May 2000, the UK undertook trials of a pot fishing method to catch Patagonian toothfish ... , there was a large by-catch of crab species. The catch rate of toothfish was notably lower than that ... this feature, there is a need to improve the commercial viability of the method and minimise the q ... ~~ant i ty of by-catch. A number of potential changes are suggested to this end. Resume De mars a ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Autor(es): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves

9. Large-scale peculiarities of phytocenosis species composition in the surface layer in the Antarctic Atlantic and Indian Ocean sectors

   samples (layer between 0 and 1 m) taken with a sampler towed by RV Professor Vize, Corethron criophilus ... Weddell Gyre. In the eastern Weddell Gyre a great change in the composition of phytoplankton species was ... Zone. A seasonal shift in species composition was observed in the same regions (sub-Antarctic waters ... , the Convergence Zone proper, south periphery of the Antarctic Circumpolar Current). A great change in ... ) taken with a sampler towed by RV Professor Vize, Corethron criophilus dominated over vast areas within ... Weddell Gyre a great change in the composition of phytoplankton species was registered. Variability in ... phytoplankton species composition occurred mainly in the Antarctic Convergence Zone. A seasonal shift in ... , south periphery of the Antarctic Circumpolar Current). A great change in phytoplankton composition was ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 201-214 : Autor(es): Makarov, R.R. and K.P. Fedorov

10. Assessments of by-catch in trawl fisheries at Heard and McDonald Islands

    biomass estimates from surveys in the region from 1990 to 1993 and a limited amount of biological data ... needed, they enable a preliminary examination of the potential for the fishery to be exceeding long-term ... a high proportion of the catch (greater than 5%) when only small amounts of fish were caught (less ... than 100 kg of by-catch), which was usually during prospecting. By-catch was usually very low as a ... biomass estimates from surveys in the region from 1990 to 1993 and a limited amount of biological data ... these estimates is needed, they enable a preliminary examination of the potential for the fishery to be ... , by-catch species appeared as a high proportion of the catch (greater than 5%) when only small ... -catch was usually very low as a proportion of the total catch when large catches of target species were ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Autor(es): Constable, A.J., R. Williams and W.K. de la Mare

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