Resultados de la búsqueda
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Revised selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3
selectivities for the years 1995 – 2000 for input to the GYM assessment. In this paper, I propose a revised ... method for estimating the selectivities based on an assumption that the proportions of the total CPUE in ... an area for a particular length class that are taken in different depth zones are Beta-distributed ... for Dissostichus eleginoides taken by longliners in Subarea 48.3 Approval: Approved ...
Meeting Document : WG-FSA-02/64 : Autor(es): G.P. Kirkwood (United Kingdom)
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Sources of variance in studies of krill population genetics
Abstract: There is a long-term interest in the population genetics of Antarctic krill species ... resurgence of interest in identifying distinct stocks of swarming krill species has been driven by the ... structure. More recent investigations using sequence variation in mitochondrial DNA (mtDNA) did indicate ... variance attributable to differences between regions. Genetic differentiation between stocks of krill in ...
Meeting Document : WG-EMM-01/12 : Autor(es): S.N. Jarman and S. Nicol (Australia)
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A multiple-frequency method for identifying and assessing the Antarctic krill stock in the Ross Sea (1989/90, 1997/98 and 1999/2000)
Abstract: The paper describes the criteria, based on the multiple frequency analysis, used in the ... crystallorophias ones and from other scatters. They are based on the experimental data acquired in the expeditions ... applied to estimate krill biomass in the area of Ross Sea (22000 nm2), investigated from 19 to 26 December ... for identifying and assessing the Antarctic krill stock in the Ross Sea (1989/90, 1997/98 and 1999 ...
Meeting Document : WG-EMM-00/37 : Autor(es): M. Azzali, J. Kalinowski and G. Lanciani (Italy)
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Improvements to the multiple-frequency method for in situ target strength measurements
to improve the accuracy and precision of in-situ target strength (TS) measurements using split-beam ... integer multiples of each other. In this study, the method itself was improved by: 1) optimizing the ... in radial range and ±0.7° off-axis (compared to ±l.0 m ±l.5° in the previous study). These ... for in situ target strength measurements Approval: Approved ...
Meeting Document : WG-EMM-99/38 : Autor(es): D.A. Demer (USA) and M.A. Soule (South Africa)
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Relationships of Antarctic krill (Euphausia superba Dana) variability with westerlies fluctuations and ozone depletion in the Antarctic Peninsula area
long-term relationship between Antarctic krill recruitment in the Antarctic Peninsula area and sea ... meaning strong westerly winds coincided with good levels of krill recruitment in 1981182 (austral summer ... coincided with the extremely poor krill recruitment in 1982/83, 1983/84, 1988/89, 1991192 and 1992/93. We ... also found significant correlations between krill stock density in the Antarctic Peninsula area and the ...
Meeting Document : WS-AREA 48-98/5 : Autor(es): M. Naganobu, K. Kutsuwada, Y. Sasai and S. Taguchi (Japan)
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Marine Protected Area planning by New Zealand and the United States in the Ross Sea region
a system of MPA in the Convention Area by 2012 (SC-CAMLR XXVIII, 3.28) and has encouraged Members to ... MPA planning processes undertaken by New Zealand and the United States, working in parallel and in ... collaboration with each other, to design MPA scenarios in the Ross Sea region. The paper presents separate MPA ... Protected Area planning by New Zealand and the United States in the Ross Sea region Approval: Approved ...
Meeting Document : WS-MPA-11/25 : Autor(es): B.R. Sharp (New Zealand) and G.M. Watters (USA)
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An acoustic survey of Antarctic krill on the South Georgia shelf, CCAMLR Subarea 48.3, in January 1992
Abstract: Acoustic surveys designed to assess krill abundance are costly in time and money, so ... the opportunity was taken in 1992 to produce a krill biomass estimate as a by-product of a fish stock ... Georgia. The appearances of echoes on echo charts were used to decide which echoes to include in krill ... ) echoes from larger scatterers. The data in the krill-size subset has been converted to density estimates ...
Meeting Document : WG-EMM-96/42 : Autor(es): Everson, I., Goss, C.
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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA FOR THE YEARS 1997–98 TO 2008–09
model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... adequate, and, as in previous assessments, the tag-release and recapture data provided the most information ... -convergence in the key biomass parameters, although there was some evidence of non-convergence in the annual ... : ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA FOR THE YEARS 1997–98 TO ...
Meeting Document : WG-FSA-09/40 Rev. 1 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)
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CLASSIFICATION GUIDE FOR POTENTIALLY VULNERABLE INVERTEBRATE TAXA IN THE ROSS SEA LONG-LINE FISHERY
Abstract: Conservation Measure 22-06, in the absence of site-specific or other conservation ... to be taken when evidence of a Vulnerable Marine Ecosystem (VME) is encountered in the course of ... -deck guide to aid in the classification of invertebrate bycatch into the appropriate groupings. The ... for other taxa. It is printed as an A2 waterproof poster for display in the vessel factory or on deck ...
Meeting Document : WG-FSA-08/19 : Autor(es): S. Parker, D. Tracey, E. Mackay, S. Mills, P. Marriott, O. Anderson, K. Schnabel, D. Bowden and M. Kelly (New Zealand)
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Variation in foraging effort by lactating Antarctic fur seals: response to simulated increased foraging costs
Abstract: Seasonally breeding predators, which are limited in the. time available for ... investment. Reduction in food availability or increased foraging costs will alter the optimal behavior of ... additional drag to increase the cost of transport in comparison with a control group (n = 8). At the scales ... ., McCafferty, D.J., Boyd, I.L. Title: Variation in foraging effort by lactating Antarctic fur seals: response ...
Meeting Document : WG-EMM-97/08 : Autor(es): Walker, T.R., McCafferty, D.J., Boyd, I.L.