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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 and 88.2 up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... still only available for about half of the non-New Zealand vessels for 2003-04. A reported total of 10 ... . About 17% of the recaptures could not be matched to a release observation, mainly because of missing ... fish in the Ross Sea was very close to the size composition of the catch. Author(s): A. Dunn and S.M ...
Meeting Document : WG-FSA-06/34 : Автор(ы): A. Dunn and S.M. Hanchet (New Zealand)
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Approaches to monitoring and assessing the abundance of rattails (Macrourus spp.) and skates in the Ross Sea
Abstract: This report presents results from a desktop study to consider approaches to monitoring ... , and acoustic surveys. We recommend that a random bottom trawl survey would be the best approach ... range 600–1500 m to obtain a precise estimate of bycatch abundance in the area of highest densities ... (SSRUs 881E, G, H, I, J, and K). A trawl survey could also be used in conjunction with other methods of ...
Meeting Document : WG-FSA-05/22 : Автор(ы): R.L. O’Driscoll, S.M. Hanchet and B.A. Wood (New Zealand)
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Population and survival trends of wandering albatrosses (Diomedea exulans) breeding on Macquarie Island
effort and survival varied markedly with breeding numbers declining from a peak in 1964 to near ... extinction levels in the mid 1980’s. Underlying this decline was a significant decrease in juvenile survival ... and, to a lesser extent, adult survival. These survival changes were coincident with changes in ... . Author(s): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia) Title: Population and survival ...
Meeting Document : WG-FSA-04/50 : Автор(ы): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia)
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Observations of demersal fish, benthic communities and seafloor composition of the Southern Ocean Atlantic sector from the ICEFISH 2004 cruise
Abstract: A multi-disciplinary research cruise in the Atlantic sector of the Southern Ocean was ... Rocks, South Georgia, the South Sandwich Islands, and Bouvetoya Island from 5 June to 30 June, 2004. A ... ICEFISH cruise trawl deployments was 9105 specimens of 29 species. A wide contrast in finfish and ... South Sandwich Islands and Bouvetoya, where the isolation of the latter island likely played a role in ...
Meeting Document : WG-FSA-04/61 : Автор(ы): C.D. Jones, S.J. Lockhart and D.F. Doolittle (USA)
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Maximum entropy reconstruction of stock distribution and inference of stock density from line-transect acoustic survey data
Abstract: We present a maximum entropy (MaxEnt) method for inferring stock density and mapping ... account of spatial correlation in the observed data and seeks to reconstruct a distribution of density ... a candidate solution under the constraint of the observed data to progress towards a converged ...
Meeting Document : WG-EMM-02/35 : Автор(ы): A.S. Brierley, S.F. Gull and M.H. Wafy (United Kingdom)
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Genetic variation among populations of the Antarctic toothfish: evolutionary insights and implications for conservation
differences among populations, a significant fixation index (Fst) and between population differentiation via a ... Mantel test. From a conservation perspective, low levels of genetic diversity may be indicative of ... fisheries in a manner that will help prevent the loss of unique genetic variation from regional overfishing ...
Meeting Document : WG-FSA-01/69 : Автор(ы): R.W. Parker, K.N. Paige and A.L. DeVries (USA)
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BEACH DEBRIS SURVEY SIGNY ISLAND, SOUTH ORKNEY ISLANDS 1996/97
classified by type, material, weight and size categories. Logistical difficulties prevented a January survey ... from being carried out at Cummings Cove. A total of 34 items weighing 1.61 kg were collected at ... Cummings Cove, 18 items weighing 1.42 kg were found at Foca Cove and 6 items with a total weight of 0.68 kg ... follows a continuing downward trend since 1993/94. The proportion of plastic items found remained high ...
Meeting Document : CCAMLR-XVI/BG/6 : Автор(ы): Delegation of the United Kingdom
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ADDING CATCH AT AGE AND SURVEY DATA TO THE 48.3 TOOTHFISH CASAL ASSESSMENT
very good. There is evidence for a size-based influence on post-tagging mortality, post-tagging growth ... recaptures at size improve. However, there is still some evidence for a sex-based influence on the fits ... recovered. A sex-disaggregated model was created, providing substantially similar fits and results to the ... cohort strength should be incorporated in calculations of TACs. A number of different mechanisms for ...
Meeting Document : WG-SAM-09/13 : Автор(ы): D.J. Agnew and M. Belchier (United Kingdom)
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Informative approaches to ageing Antarctic fishes
;physiological time'. In this regard otoliths and post-mitotic tissues may contain a large amount of ... biological and ecological information about a fish's age and past life history. In otoliths this ... possible to estimate the age of a large number of fish easily. Chemical analyses of stable isotopes and ... information. A thorough utilization of structural and chemical analyses; Antarctic fish otoliths may make it ...
Meeting Document : CCAMLR/86/FA/07 : Автор(ы): R.L. Radtke and K.T. Hill (USA)
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AMLR 2009/10 Field Season Report: objectives, accomplishments and conclusions
season of a long-term series of studies of the Antarctic Peninsula ecosystem. Hydrographic results ... area, forming a front along the shelf break north of the archipelago. During the 2009/10 U.S. AMLR ... low, indicating that a weak cohort was produced the previous year. The abundance of Salpa thompsoni ... Technical Memorandum, NOAA-TM-NMFS (in press)) Author(s): A. Van Cise (Editor) Title: AMLR 2009/10 Field ...
Meeting Document : WG-EMM-10/P12 : Автор(ы): A. Van Cise (Editor)
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