Résultats de la recherche
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Reporting procedures for the continuous fishing method
proposes a change in the CCAMLR requirements that produces more robust and correct catch statistics. Author ... (s): O.R. Godø and T. Knutsen Title: Reporting procedures for the continuous fishing method ...
Meeting Document : WG-EMM-16/05 : Auteur(s): O.R. Godø and T. Knutsen
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Progress report of Chilean research on albatross ecology and conservation
outcome of two research programs that are currently underway, which aim to establish if the effect of the ... long-line fishery is similar to that found in CCAMLR waters. The objective of this paper is to inform ... Abstract: Two species of albatross breed in Chile, namely Thalassarche melanophrys and T ...
Meeting Document : WG-FSA-02/18 : Auteur(s): J. Arata and C.A. Moreno (Chile)
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Uncertainty in acoustic surveys of Antarctic krill
acoustic surveys. The variance in system calibration with a standard sphere was evaluated in relation to ... different standard spheres with the results of a calibration by self-reciprocity (Demer and Hewitt ... with a standard sphere were estimated as-1.2 dB and ±0.3 dB, respectively. Uncertainty in estimating ... krill TS estimates were conservatively estimated to be 0 dB and ±4.0 dB, respectively. The uncertainty ...
Meeting Document : WG-EMM-95/72 : Auteur(s): Demer, D.A.
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Sexing chinstrap penguins (Pygoscelis antarctica) by morphological measurments
(Pygoscelis antarctica) to obtain a function that can be used to predict sex. The function correctly ... classified 95% of 55 individuals. Bill depth was the most important discriminating variable, with males ...
Meeting Document : WG-CEMP-94/25 : Auteur(s): Jaun A. Amat, Javier Viñuela and Miguel Ferrer (Spain)
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The preliminary report on the survey in Subarea 48.2 in 2016 (the second year of the planned 3-year-old investigations)
48.2 on board the Ukrainian vessel SIMEIZ were conducted in accordance with the recommendations of the ... Scientific Committee and Commission. The second year survey design was amended in comparison with the one of ... the first year and approved by WGs SAM, FSA and SC CCAMLR. Obtained data will be used for the future ... biomass estimation of the target species and making decision for the future fishing on that fishing ground ...
Meeting Document : WG-SAM-16/22 : Auteur(s): L. Pshenichnov, S. Ajiumerov and D. Marichev
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A review of rattail (Macrourus spp.) and skate by-catch and analysis of standardised CPUE, for the exploratory fishery in the Ross Sea (CCAMLR Subareas 88.1 and 88.2) from 1997/98 to 2004/05
rattail catch rates between different vessels. Examination of vessel characteristics showed that catch ... rates of rattails were lower with the Spanish line system than with the autoline system. Russian and ... shown a general increasing trend since 1998/99, with a peak in 2002/03. It was not possible to reliably ... either dataset. There are a number of inconsistencies within the observer data which need to be resolved ...
Meeting Document : WG-FSA-05/24 : Auteur(s): S.L. Ballara and R.L. O’Driscoll (New Zealand)
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Managing ecosystem uncertainty: critical habitat and dietary overlap of top-predators in the Ross Sea
) demonstrated that space-time overlap is critical to predicting the degree to which a fishery might affect a ... food web. The fisheries that we contemplate are those for Antarctic toothfish and the Antarctic minke ... whale, though other species might also soon be exploited in the Ross Sea region. In addition to those ... . Using data from satellite tags attached to top predators that occur at colonies and haul outs along the ...
Meeting Document : WG-EMM-06/29 : Auteur(s): Testa, J.W., Stewart, B.S., Olmastroni, S., Lyver, P., Karl, B., Eastman, J., Barton, K., Ballard, G., Toniolo, V., Wilson, P., Ainley, D.
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Mackerel icefish size and age at South Georgia and Shag Rocks
mortality indicates that the mackerel icefish populations at South Georgia and Shag Rocks should be managed ... between 1987 and 2002. Most surveys were between December and February (summer), with one in September ... at each locality was similar. This is further evidence that C. gunnari probably hatch earlier at Shag ... 1987 and 1994, and this change was negatively correlated with summer sea surface temperatures during ...
Meeting Document : WG-EMM-03/7 : Auteur(s): A.W. North (United Kingdom)
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Towards a closer cooperation between CCAMLR and the IWC
the IWC could best be achieved by forming a small liaison group with IWC-SC which could work (mostly ... ); and Annual exchange of information. SC-CAMLR suggests that a closer collaboration between CCAMLR and ... expertise and should not be confined to those who attend meetings of both CCAMLR and the IWC. Author(s ...
Meeting Document : SC-CAMLR-XVII/BG/03 : Auteur(s): CCAMLR Observer (K.-H. Kock, Germany)
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Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations
yield component and an unsustainable “windfall” component associated with a one-time reduction in stock ... sum of catches and associated number of years, the relative reduction in biomass during that period ... , the natural mortality rate (M, which should be,0.2 year21), and the assumed ratio of FMSY to M. These ... input values are expected to be approximate, and based on the estimates of their imprecision, the ...
Meeting Document : WG-SAM-11/P3 : Auteur(s): A.D. McCall