Résultats de la recherche
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
Paper Title: Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a ... definitions of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... . The results strongly suggest that the krill fishery in the South Georgia area is operating at a ... critical level of krill availability which is just enough to maintain the best factory performance. In this ... . TTPD was very small (≈30 min) in the 1980/81 season, and showed a rapid increase until the 1985/86 ... , Australia: 161 pp. Hewitt, R.P., D.A. Demer and J.H. Emery. 2003. An eight-year cycle in krill biomass ... t ot al 0 5 10 15 20 25 30 -150 -100 -50 0 50 100 150 CPST -3 -2 -1 0 1 2 3 -150 -100 ... -50 0 50 100 150 Quantiles of standard normal R es id ua ls Log10CPT 0 10 20 30 40 -1.5 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Auteur(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2012/13 Subarea 48.6 and Divisions 58.4.1, 58.4.2 and 58.4.3a (this is a revision of WG-SAM-12/09)
of very small proportion of immature fish. Highest GSI for D. mawsoni in March over years was ... Abstract: The research fishing proposal for Dissostichus spp. in Subarea 48.6 and Divisions ... 58.4.1, 58.4.2 and 58.4.3a is resubmitted following paragraph 3.24 of WG-SAM-12. In the present proposal ... data, and secondly showed the results of biological features with some discussion of life history in ...
Meeting Document : WG-FSA-12/60 Rev. 1 : Auteur(s): Delegation of Japan
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Fish stock assessment survey in Subarea 48.3
Paper Title: Fish stock assessment survey in Subarea 48.3 Abstract / Description: A demersal ... fish survey in the vicinity of South Georgia, CCAMLR Subarea 48.3, is described. Details are given of ... important commercial species in the area, Champsocephalus gunnari, is shown to have undergone a major ... at 20 cm, which coincides with the trough in the length distribution. The length frequency ... Table 14. Even though this year's survey was slightly later in the year than the 1990 survey the ... previous year and is not an artefact of the sampling technique or survey design. 30 Further evidence ... 1 22 1 6 13 53 19.80 42 44.30 463 27 2 22 1 10 10 53 28.40 42 18.20 232 30 3 22 1 14 20 53 26.00 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Auteur(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski
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Change-in-ratio and index-removal methods for population assessment and their application to snow crab (Chionoecetes opilio)
Abstract: Change-in-ratio and index-removal estimators are presented in a general form suitable ... for fisheries studies. We also show how to combine the two approaches in a single estimator. It is ... composition, in order to use these methods. We use the methods to estimate the population of legal-size snow ... crabs (Chionoecetes opillio) in St. Mary's Bay, Newfoundland, before and after the fishery, and to ...
Meeting Document : WS-CRAB-93/10 : Auteur(s): X. Xu, E.G. Dawe and J.M. Hoenig (USA)
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The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns
Paper Title: The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991 ... fishery in the Atlantic Sector of the Antarctic from 1977 to 1992 are discussed. The total fishing effort ... from 1977 to 1991 was 50 086 vessel-days fished, in Subareas 48.3 (45% of the total for the period ... ), 48.2 (36%) and 48.1 (19%). Three distinct patterns in the distribution of monthly fishing effort ... between subareas in the 15-year period from January 1977 to December 1991, the period during which the ... 0 0 0 0 0 0 0 91 7 1. 8 R T M S 92 86 30 4 39 6 20 6 20 2 11 6 89 ... previous period, with the krill fi shery occurring in Subarea 48.2 in the fi rst half of the year. There ... leaving, vessels worked in Sub- area 48.2 and reported good fi shing conditions with up to 10–20 tonnes ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Auteur(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky
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A proposal for a standardised survey for Antarctic toothfish in McMurdo Sound
mammalian predators in the area. Age composition, physiology, and diet objectives can be met with the ... through the annual sea ice in McMurdo Sound to monitor the age composition, diet, maturity, and local ... abundance of Antarctic toothfish. A pilot season was carried out in 2014, where sampling gear and ... methodology for a standardised hook and line survey were trialled in McMurdo Sound. Data collected will be ...
Meeting Document : WG-FSA-15/33 : Auteur(s): S.J. Parker, S.M. Hanchet and S. Mormede (New Zealand)
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TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA
prey) will vary between different life history stages at different times of the year in different areas ... observations, animal-mounted camera information, and observations from field scientists in the McMurdo Sound ... item for Weddell seals in the Ross Sea. • We summarise the life history of Weddell seals to provide an ... evidence that Antarctic toothfish have lower densities near to seal breeding colonies in McMurdo Sound than ...
Meeting Document : WG-EMM-08/43 : Auteur(s): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
Paper Title: A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in ... Martialia hyadesi; will be attempted in the future. This squid is an important component of the diet of ... several species of albatross and the southern elephant seal and is probably taken in significant ... predators in the Scotia Sea is 326 098 to 330 642 tonnes, 94% of which is taken by southern elephant seals ... OF THE OMMASTREPHID SQUID MARTIALIA BY ADESI IN THE SCOTIA SEA BASED ON DATA FROM PREDATORS· P.G ... exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ... seal and is probably taken in significant quantities by several other Southern Ocean vertebrate ... predators. Estimated annual consumption by known predators in the Scotia Sea is 326 098 to 330642 tonnes ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Auteur(s): Rodhouse, P.G.
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Fishery Report 2014: Exploratory fishery for Dissostichus spp. in Division 58.4.2
Description / Abstract: Fishery Report 2014: Exploratory fishery for Dissostichus spp. in ... Dissostichus spp.) are shaded. Throughout this report the CCAMLR fishing season is represented by the year in ... to 30 November 2014). Fishery Report 2014: Exploratory fishery for Dissostichus spp. in ... to small-scale research unit (SSRU) E. Although a catch limit of 30 tonnes has been set in SSRU A ... . mawsoni and 30 D. eleginoides have been tagged in Division 58.4.2 (Tables 3a and 3b) and no tagged ...
Document : Site Section: Publications
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Review of rattail and skate by-catch and analysis of rattail standardised CPUE from the Ross Sea toothfish fishery in Subarea 88.1 from 1997/98 to 2001/02
raised by the 2001 CCAMLR bycatch subgroup, the processes for recording bycatch in this fishery were ... Abstract: Little is known about the bycatch of skates, rays and macrourids in the target longline ... fishery for toothfish in the Ross Sea. Following concerns about the accuracy of reporting of bycatch ... macrourid bycatch in this fishery. The review of data suggest that the toothfish fishery has not yet had a ...
Meeting Document : WG-FSA-02/40 : Auteur(s): R.G. Blackwell and S.M. Hanchet (New Zealand)