Search results
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Growth models for D. eleginoides for the Heard Island plateau region (Division 58.5.2) calibrated from otolith-based length at age data and validated using mark-recapture data
(VP) of sampling lengths. A segmented linear trawl fishing selectivity function was used where the ... upper-arm was estimated, as described elsewhere, from comparisons of longline LF samples to that for ... trawls for seasons where both fishing methods were used. Due to the small number of fish in the aged ... sample that were older than 20 years the general trend in the data of length with age did not exhibit ...
Meeting Document : WG-FSA-05/64 Rev. 1 : Author(s): S.G. Candy, T. Lamb, A.J. Constable and R. Williams (Australia)
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Catch removals due to killer and sperm whale interactions across sub-Antarctic fisheries
investigated the extent of this conflict in multiple commercial Patagonian toothfish (Dissostichus eleginoides ... , and Heard Island and McDonald Islands (Indian sector of the Southern Ocean) fisheries, statistical ... . The results indicated that these removals were large, totalling more than 6,600 t of toothfish between ... 2009 and 2016 with an overall annual mean of 837 t [95% CI 480-1,195 t], comprised of 317 t [232-403t ...
Meeting Document : WG-FSA-2019/33 : Author(s): P. Tixier, P. Burch, F. Massiot-Granier, P. Ziegler, D. Welsford, M.-A. Lea, M.A. Hindell, C. Guinet, S. Wotherspoon, N. Gasco, C. Péron, G. Duhamel, R. Arangio, R. Tascheri, S. Somhlaba and J.P.Y. Arnould
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By-catch observation during krill fishing cruise (48.1, 48.2 Statistical Subareas, 2011)
Abstract: 359 Antarctic krill catches were analysed for by-catch, it took 48.5% of observed ... catches and 31.3% of total catches. Fish by-catches were usual in the sector 48.1 (89.1% of cases); the ... most of by-caught fishes belonged to families Nototheniidae (NOX) (66.3%). Fish by-catches in the ... sector 48.2 were recorded in 50% examined catches; the most frequent were fishes of families Myctophidae ...
Meeting Document : WG-FSA-11/41 : Author(s): K. Vyshniakova (Ukraine)
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Executive Secretary’s Report, 2018, including Fourth Year Implementation Report for the Secretariat’s Strategic Plan (2015–2018)
Abstract: This report is the last of four describing the activities of the Secretariat under the ... 2015–2018 Strategic Plan. Highlights of the year are presented, which include the development of a new ... Strategic Plan for the next 4 years 2019–2022. Future reports will be against the format of the new ...
Meeting Document : CCAMLR-XXXVII/05 : Author(s): Executive Secretary
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Proposal for further trials aimed at reducing Macrourus spp. by catch on autoliners targeting D. eleginoides with longlines around South Georgia
Abstract: IW longlines are effective in reducing the bycatch of birds in toothfish fisheries, but ... by putting the line closer to the seabed they increase the bycatch of macrourids and rajids ... . Experiments reported elsewhere demonstrate that some of this effect can be mitigated by the use of fish rather ... . All systems will have sink rates of at least 0.3 m.s-1. Comments on the experimental protocol are ...
Meeting Document : WG-FSA-07/30 : Author(s): Delegation of the United Kingdom
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Fish stock assessment survey in Subarea 48.3, 2004
Abstract: This report describes the activities and preliminary results of the 9th UK fish stock ... of acoustic methods for the determination of icefish biomass could be undertaken. Following the ... recommendations of the CCAMLR subgroup on fisheries acoustics (WG –SFA) emphasis was to be put on obtaining ... information on the target strength and length composition of the pelagic component of the icefish biomass. A ...
Meeting Document : WG-FSA-04/85 : Author(s): M. Belchier, M. Purves, M. Collins, S. Hawkins, T. Marlow, R. Mitchell, J. Szlakowski and J. Xavier (United Kingdom)
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Selectivity-induced bias in growth parameter estimates
Abstract: A short simulation study has been carried out to investigate the size of the bias in ... estimates of growth parameters resulting from fish of different sizes having different probabilities of ... producing considerably lower estimates of L? and higher estimates of K than in the true population. The ...
Meeting Document : WG-FSA-SAM-05/19 : Author(s): G.P. Kirkwood (United Kingdom)
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Commercial krill fisheries in the Antarctic 1973–1988
Abstract: STATLANT data reported to the Commission for the Conservation of Antarctic Marine ... peak of some 500 000t in 1981/82 before droping to a low level in 1983/84 and stabilising at about 400 ... 000t thereafter. Indications are that in terms of both catch and effort the Soviet and Japanese ... fisheries in Statistical Sub-areas 48.1, 48.2 and 48.3 dominate exploitation of krill in the CCAMLR ...
Meeting Document : SC-CAMLR-VIII/BG/11 : Author(s): Delegation of South Africa
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The SCAR Antarctic digital topographic database
Abstract: The Antarctic digital topographic database is the outcome of a truly international ... collaborative project between 11 nations. Data capture was co-ordinated in the UK, under the auspices of the ... number of satellite images (mostly Landsat photographic products). Editing and harmonization of the data ... derived from the different sources has produced a seamless map of Antarctica which has the most up-to-date ...
Meeting Document : SC-CAMLR-XII/BG/16 : Author(s): Delegation of United Kingdom
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Outline proposal for geographic information services for CCAMLR
-of-the-art capacity for managing spatial data for CCAMLR, particularly the types of information ... handling geographic information, and a phased handover of system development and maintenance to the ... Secretariat. BAS is well-placed to offer these geographic information services, with over 10 years of ... staged approach involving different levels of complexity and commitment. At this stage the document only ...
Meeting Document : WG-EMM-12/70 : Author(s): Submitted by the Secretariat on behalf of Adrian Fox, British Antarctic Survey (United Kingdom)