Résultats de la recherche
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Brief comments on the simulation study made by Professor Butterworth on krill fishing by an individual Japanese trawler
Paper Title: Brief comments on the simulation study made by Professor Butterworth on krill ... questions are raised concerning the simulation study of the Japanese krill fishery carried out by ... Butterworth (1988). Firstly, the simulation study used krill distribution parameter values based on the FIBEX ... results, whereas Japanese vessels often operate on layers which are much larger than the swarms detected ... begin launching their nets aiming at the swarm(s) which have just been found. When no swarm is found ... WS-KCPUE-89/7 BRIEF COMMENTS ON THE SIMULATION STUDY ... Abstract In this paper, three essential questions are raised concerning the simulation study of the ... Japanese krill fishery carried out by Butterworth (1988). Firstly, the simulation study used krill ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 347–350 : Auteur(s): Ichii, T. and Y. Endo
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Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia
Paper Title: Comparison of age readings from scales and otoliths of the Patagonian toothfish ... compared for 105 specimens of the Patagonian toothfish (Dissostichus eleginoides) from the South Georgia ... test for paired data (Ts = 0.256, n = 59) conducted on the remaining 56% showed that differences in age ... estimates between the two methods were not significant. Otoliths frequently appeared totally opaque, making ... procedures. However, as no more information is available in this study, it is assumed that the rings are ... 43.81% of the samples. In the 56% of cases where readings did not agree, there was no evidence of ... , although no reference was made to their cut width. The technique of cutting otolith sections of 0.3 mm ... both structures, no significant differences were found, therefore the scale reading method did not ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Auteur(s): Cassia, M.C
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Patterns and processes in the distribution and dynamics of Antarctic krill
Paper Title: Patterns and processes in the distribution and dynamics of Antarctic krill Abstract ... / Description: A general framework is presented to develop, test and integrate component models of the ... abundance. Incremental models should then be compared to statistical descriptions of the observed ... distribution patterns at various scales of observation to ascertain the plausibility of the model and identify ... SC-CAMLR-VII/BG/20 PATTERNS AND PROCESSES IN THE ... framework is presented to develop, test and integrate component models of the distribution and dynamics of ... should then be compared to statistical descriptions of the observed distribution patterns at various ... scales of observation to ascertain the plausibility of the model and identify critical processes to be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Auteur(s): Levin, S.A., A. Morin and T.M. Powell
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Fishery Report 2013: Dissostichus eleginoides Crozet Island inside the French EEZ (Subarea 58.6)
Description / Abstract: Fishery Report 2013: Dissostichus eleginoides Crozet Island inside the ... the longline fishery to waters outside 12 n miles and no shallower than 500 m. A size limit has been ... the EEZ in Subarea 58.6 and in 2008 was estimated to be 224 tonnes. 3 11. There have been no ... methodological issues in its assessment, no estimates of the IUU catch of Dissostichus spp. have been provided ... is still unknown and no fish from Crozet Island have been recovered on the Kerguelen Plateau ...
Document : Site Section: Publications
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Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system
Paper Title: Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system Abstract ... / Description: An exchange system was established among Members of CCAMLR to compare age determinations for the ... same species among different laboratories. Four species were included in the exchange: Notothenia ... rossii, Champsocephalus gunnari, Notothenia gibberifrons and Pleuragramma antarcticum. The level of ... of Notothenia rossii scales from South Georgia and the South Shetland Islands. No. Length Weight ... SC-CAM LR-VIIIIBG/46 RESULTS OF THE CCAMLR ANTARCTIC ... established among Members of CCAMLR to compare age determinations for the same species among different ... laboratories. Four species were included in the exchange: Notothenia rossii, ChampsocephaJus gunnari ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Auteur(s): Kock, K.-H.
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Environment–krill relations in the South Georgia marine ecosystem
Paper Title: Environment–krill relations in the South Georgia marine ecosystem Abstract ... / Description: Interannual variability in the Southern Ocean ecosystem has long been noted and physical factors ... appear to dominate the dynamics. There are, however, few ecological time series available to assess this ... variability and it is only recently that physical datasets have been generated for the Southern Ocean. In this ... there was no information on the number of days spent fishing (days on which fishing actually occurred ... arrows indicate periods when there was no fishery due to the reported absence of krill. The first five ... negative, so it There was no consistent correlation between characterises both the absolute intensity of ... ice-edge positions through the year. There were no consistent correlations between the M-ATs at 50"s ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Auteur(s): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1)
Paper Title: Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1 ... trawl surveys around Elephant Island (the northernmost island of the South Shetland Islands) from 1977 ... /78 to 1992/93. The results are presented in table format. File: 10kock-harm.pdf ... to the south of Clarence Island (see Kock, 1986 - Figure 4) for which no information on fish ... Clarence Island were no longer included in the recent estimate. REFERENCES Everson, I. 1987. Areas of ... AREAS OF SEABED WITHIIV THE 500 M ISOBATH AROUND ELEPHANT ISLAND (SUBAREA 48.1) K.-H. Kock and U ... trawl surveys around Elephant Island (the northernmost island of the South Shetland Islands) from 1977 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 131–135 : Auteur(s): Kock, K.-H. and U. Harm
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Fishery Report: Dissostichus eleginoides (TOP) Crozet Island inside the French EEZ (Subarea 58.6)
estimated to be 224 tonnes from outside the EEZ. There was no evidence of IUU fishing from 2009 to 2012 ... movements of sub-adult/adult fish, the proportion of exchange between stocks is still unknown and no fish ... are from the total number of hooks set. 16. No incidental mortality of marine mammals was reported ... ) recommended that, as no new information was available on the state of fish stocks in Subarea 58.6 outside ...
Document : Site Section: Publications
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New Zealand: Review of the Ross Sea region stock assessment
and no dispersion – Survey biomass has annual cv and no process error 1. Run the model with no ... of the Ross Sea region stock assessment Sophie Mormede, Steve Parker 18-22 June 2018, Norwich ... challenges • Effect of the MPA 2 3 4 Stock hypothesis & Model structure Proportion of toothfish ... grounds Ross gyre Juveniles then move along shelf Adult feeding on the slope Spawning in the north ...
Document : Site Section: Meetings
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
Paper Title: Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77 ... -1986/87 Abstract / Description: The swept area method was used to estimate biomass density changes in ... the stocks of five fish species (Champsocephalus gunnari, Chaenocephalus aceratus, Pseudochaenichthys ... georgianus, Notothenia gibberifrons and Notothenia rossii marmorata) in the South Georgia area in the seasons ... biomass density of c. aceratus increased distinctly, no fish below 30 cm in length were found in the ... -40 cm was still quite high in the catch (no data from the 1979/80 season). Biomass densities in ... CHANGES IN BIOMASS OF FISH STOCKS IN THE SOUTH GEORGIA AREA IN 1976/77-1986/87 M. Mucha and W ... . Slosarczyk (Poland) Abstract The swept area method was used to estimate biomass density changes in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Auteur(s): Mucha, M. and W. Ślósarczyk