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Physical and behavioural influences on larval fish retention: contrasting patterns in two Antarctic fishes
dynamics and connectivity of C. gunnari and N. rossii populations at South Georgia in relation to prospects ... retention of the planktonic stages (eggs and larvae) of marine fish can play a key role in the maintenance ... of adult stocks. Here we use a numerical modelling approach to examine the influence of oceanographic ... and life history variability on the dispersal and retention of two species of Antarctic fish ...
Meeting Document : WG-FSA-12/P10 : Автор(ы): E.F. Young, J. Rock, M.P. Meredith, M. Belchier, E.J. Murphy and G.R. Carvalho
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RESEARCH PLAN FOR TOOTHFISH IN DIVISION 58.4.4a & b BY SHINSEI MARU NO. 3 IN 2009/10
Abstract: In order to clarify stock status and biological characteristics of Dissostichus spp. in ... Division 58.4.4 a & b, a total of 124 research hauls are allocated on 10-minute latitude x 20-minute ... longitude grid points (spaced approximately 10 nautical miles apart). Almost all of the research hauls are ... distributed between 500 and 2,000 m sea depths over each SSRU, except only 2 hauls which are distributed at ...
Meeting Document : WG-SAM-09/11 : Автор(ы): Delegation of Japan
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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 ... and density of Antarctic krill (Euphausia superba) is important, as variability in krill stocks ... density with hypothesized environmental factors, including strength of westerly winds (westerlies ... and the strength of westerlies during 1982–1998. Years with strong westerlies during the austral ...
Meeting Document : WG-EMM-99/52 : Автор(ы): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)
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Using acoustic echo counting to estimate grenadier abundance in the Ross Sea (SSRU88.1I)
at seabed depths of 700–1000 m, and revealed consistent spatial patterns, with higher numbers of ... index the relative abundance of grenadiers and be useful for exploring spatial distribution. Automated ... . These methods can be applied to large volumes of relatively low quality, opportunistically collected ... longline catches of grenadiers and toothfish. Single targets were most abundant within 250 m of the bottom ...
Meeting Document : WG-FSA-14/62 : Автор(ы): Y. Ladroit, R.L. O’Driscoll and S. Mormede (New Zealand)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in SSRU 882E including data from the 2005/06 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... -at-age and tag-recapture data from New Zealand and all vessels. The updated reference case resulted ... in a slightly higher estimate of initial biomass than in 2005, though this was mostly due to a ... different assumption of the level of natural mortality (M=0.13 y-1), and the revised length-weight and ...
Meeting Document : WG-FSA-06/48 : Автор(ы): A. Dunn and S.M. Hanchet (New Zealand)
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Methodology for automated spatial sea ice summaries in the Southern Ocean
during historical fishing events. The distribution of local ice concentration at the time of each fishing ... Abstract: Sea ice is recognised as a core driver of both ecosystem dynamics and fishery ... dynamics of sea ice in a target location for a specified period, and a temporal view is used to ... relationship between sea ice concentration and fishing. Although more than 85% of fishing events occurred in ...
Meeting Document : WG-FSA-14/54 : Автор(ы): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)
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MODELLING ANTARCTIC KRILL: SCALE, MOVEMENT AND AGE‐STRUCTURE
time of year in which the data were collected, with multiple surveys at different times within a year ... Abstract: The organization, example outputs, and future objectives of an integrated, age ... 's capabilities are illustrated using 19 years of survey data collected by the U.S. AMLR Program ...
Meeting Document : WG-EMM-11/43 Rev. 1 : Автор(ы): D. Kinzey, G. Watters and C. Reiss (USA)
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PRELIMINARY PROPOSAL FOR MARINE SPATIAL PROTECTION AROUND THE SOUTH ORKNEY ISLANDS
Abstract: This paper proposes the establishment of a protected area to the south of the South ... Orkney Islands (within Subarea 48.2), to contribute towards the conservation of marine biodiversity and ... the development of representative marine spatial protection for this region. The proposed area has ... been selected on the basis of analysis previously recommended by WG-EMM for consideration by the ...
Meeting Document : SC-CAMLR-XXVIII/14 : Автор(ы): Delegation of the United Kingdom
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Zooplankton target strength: volumetric or areal dependence?
Abstract: Target strengths (TS) of various zooplankton were measured at 200 kHz, 420 kHz and 1 ... MHz and the dependence of these data on animal volume versus cross-sectional area was explored The 420 ... seawater. The data were compared to both empirical and theoretical models of reduced target strength (TS ... normalized by the square of the animal length) versus ka (the product of wave number and equivalent ...
Meeting Document : WG-Krill-94/13 : Автор(ы): D.A. Demer and L.V. Martin (USA)
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Proposal for a research plan for the exploratory longline fishery for Dissostichus spp. in 2014/15 in Division 58.4.4
Abstract: Regarding the low levels of stocks of Dissostichus spp. and the high levels of IUU ... developments of the assessment of Dissostichus eleginoides using a CASAL model and a simple Petersen biomass ... tested 1/ base case model without IUU catch; 2/ including 22% of IUU catch supposed in Division 58.4.4; 3 ... / IUU catch estimated within the model. For the run 3/, B0 is estimated at around 640 tonnes and the ...
Meeting Document : WG-SAM-14/18 : Автор(ы): Delegation of France
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