Resultados de la búsqueda
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Krill distribution pattern due to water structure and dynamics near the South Sandwich Islands in January–February 2000 (Krill Synoptic Survey 2000)
: waters of Antarctic Circumpolar Current, Weddell Sea and Secondary Frontal zone of Weddell Gyre. The ... schematic maps of geostrophic waters circulation are made. The joint analysis of environment parameters and ... length frequency, maturity stages and waters inhabited. Distribution of the 1st krill group (juveniles 25 ... -29 mm) well corresponds to meanders of Weddell Current to West of archipelago and distribution of the ...
Meeting Document : WG-EMM-00/33 : Autor(es): V. Sushin, P. Chernyshkov, V. Shnar, F. Litvinov and K. Shulgovskiy (Russia)
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Assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990-2014
assessments of Dissostichus eleginoides in the research block 58.4.4b_1 following the recommendation of the WG ... estimates of OB_1b model (OB_1b_noage model). The fits to CPUE in 2008 and MPD profiles for tags in the same ... first research in 2008. The removal of 2008 CPUE data improved the CPUE fits in OB_1b model. The fix of ... size of fish available for catches in this area. The OB_1b_notag model did not improve any fits of ...
Meeting Document : WG-SAM-15/25 : Autor(es): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3
, this increase may be suspended or reversed in any year depending on how many of the previous three year ... requires a basis for the assessment of resource status, and an algorithm for specifying the levels of ... regulatory mechanisms (e.g. a catch control law) that depends on the results of the assessment. Developing ... and selecting a procedure requires a basis for the simulation testing of procedures, and an ...
Meeting Document : SC-CAMLR-VIII/BG/17 : Autor(es): Delegation of South Africa
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Relationship between Antarctic krill (Euphausia superba) variability and westerly fluctuations and ozone depletion in the Antarctic Peninsula area
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... ; = 0.57) and 2-year-old krill (r = 0.69) with a level of significance of 5%. In addition, the strength of ... and density of Antarctic krill (Euphausia superba) is important, as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. We have assessed variability in krill recruitment and ...
Meeting Document : WG-EMM-99/52 : Autor(es): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
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Correlation between krill and Champsocephalus gunnari stocks in the South Georgia Area 48.3
Abstract: After almost a ten-year gap in fishing for Champsocephalus gunnari in the area of South ... short-time fishing operation in February-March, 1999. Overall, 85 pelagic trawlings yielded 264 tons of ... determine a clear correlation between concentrations of adult fish and krill on the north-western shelf of ... South Georgia. At the same time, lasting of the feeding stocks of C. gunnari depended on weather ...
Meeting Document : WG-EMM-99/27 : Autor(es): K.V. Shust, V.L. Senioukov, P.N. Kochkin andN.A. Petrukhina (Russia)
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Seabird mortality in the Japanese tuna longline fishery around Australia, 1988–1995
) by Japanese longline vessels targeting tuna. In recent years the estimated rate of seabird bycatch in ... the AFZ has been in the order of 0.15 birds 1000 hooks, translating to mortalities of 1000-3500 birds ... southern Australia. Uncertainties in the observed catch rates prevent confident assessment of trends, but ... time. Sixteen seabird species of birds killed on longlines in the AFZ have been identified. These ...
Meeting Document : WG-FSA-98/31 : Autor(es): N. Brothers, R. Gales and T. Reid (Australia)
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Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters
Abstract: The use of allozymes as a tool in stock structure analysis was examined in the ... indicate that localised stocks of C. gunnari exist in South Georgia waters. The questions posed by the non ... revealed average levels of genetic variability, with the proportion of polymorphic loci, P = 0.278, mean ... stock separation among samples in South Georgia waters. Four samples (116 individuals) of icefish were ...
Meeting Document : WG-FSA-90/10 : Autor(es): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)
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Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)
targets was similar to that predicted based on the expected size range of grenadiers. Variability in ... vessels in SSRU 88.1I. The next step will be to apply to these methods to a wider set of data across the ... Abstract: Grenadiers (Macrourus spp.) are the main bycatch species in the exploratory longline ... fishery for toothfish in the Ross Sea. Previous studies concluded that acoustics methods could be used to ...
Meeting Document : WG-FSA-14/62 : Autor(es): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)
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Modifications to the Generalised Yield Model in 2004, version GYM501E.EXE
Abstract: The Generalised Yield Model is used by the WG-FSA in the assessments of Champsocephalus ... in 2004 an error in the calculation of the recruitment series from survey data was detected. This ... error does not affect the assessments undertaken in recent years. This paper presents the nature of the ... error and the manner in which it was corrected. The recruitment series is the estimate of abundance of ...
Meeting Document : WG-FSA-04/91 : Autor(es): A.J. Constable (Australia)
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REPORT ON THE ABANDONED GILLNET RETRIEVAL OPERATION CONDUCTED BY AUSTRALIA IN CCAMLR STATISTICAL DIVISION 58.4.3B (BANZARE BANK)
gillnets as a fishing method to target toothfish in the Convention area. Estimating the impact of IUU ... . Based on the amount of toothfish found in the 8 km long section of net retrieved, upwards of 29 tonnes ... fishing is hampered by a lack of data on the design, deployment, catch and bycatch rates of gill nets ... (Statistical Division 58.4.3b), and the toothfish and bycatch found when a section of the gillnet was retrieved ...
Meeting Document : CCAMLR-XXVIII/BG/22 : Autor(es): Delegation of Australia