Resultados de la búsqueda
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PROPOSAL FOR AN EXTENSION TO THE MARK–RECAPTURE EXPERIMENT TO ESTIMATE TOOTHFISH POPULATION SIZE IN THE SOUTH OF SUBAREA 48.4
with discard weights at 19% and 0.8% of toothfish catches, respectively. These rates are similar to ... Abstract: 1. A three-year tagging study in the South of Subarea 48.4 was initiated in the 2008/09 ... fishing season with the aims of providing the data required for assessments of the population structure ... , size, movement and growth of both Dissostichus eleginoides and Dissostichus mawsoni in the South of ...
Meeting Document : WG-FSA-09/18 : Autor(es): J. Roberts and D.J. Agnew (United Kingdom)
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Larval fish distribution and abundance of the western Ross Sea
carried out in the western Ross Sea in November-December 1994. The present study focused on improvement of ... the knowledge of the larval fish community in relation to its distribution and relative abundance. A ... midwater trawl (Hamburg Plankton Net) was used to collect samples at 26 stations. Larval and juvenile ... specimens of twentyone species belonging to six families (Artedidraconidae, Bathydraconidae, Channichthyidae ...
Meeting Document : WG-FSA-95/11 : Autor(es): Greco, S., la Mesa, M., Vacchi, M.
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CIRCULATION IN THE ROSS SEA SECTOR OF THE SOUTHERN OCEAN: REPRESENTATION IN NUMERICAL MODELS
Abstract: The circulation in the Ross Sea sector of the Southern Ocean is examined in three ... numberical models of intermediate to high resolution. Despite the model differences (including physics ... , forcing) the circulation representation is relatively consistent, both in terms of the mean and some ... aspects of monthly variability. This could point to strong bathymetric constraints on the circulation. In ...
Meeting Document : WG-EMM-09/41 : Autor(es): G.J. Rickard (New Zealand), M. Roberts (United Kingdom), M.J.M. Williams, A. Dunn, M.H. Smith and M. Pinkerton (New Zealand)
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BIOMASS ESTIMATES AND SIZE DISTRIBUTIONS OF DEMERSAL FINFISH ON THE ROSS SEA SHELF AND SLOPE FROM THE NEW ZEALAND IPY-CAML SURVEY, FEBRUARY-MARCH 2008
Abstract: during February and March 2008 as part of the International Polar Year. The main aim of ... the survey was to carry out a Census of Antarctic Marine Life in this regionfocussing on sampling the ... Subarea 88.1). The shelf and slope were stratified by depth and at least three random trawls completed in ... each stratum. The trawl survey of the shelf area focused mainly on icefishes, notothens, Antarctic ...
Meeting Document : WG-FSA-08/31 : Autor(es): S.M. Hanchet, M.L. Stevenson (New Zealand), C. Jones (USA), P.M. Marriott, P.J. McMillan, R.L. O’Driscoll, D. Stevens, A.L. Stewart and B.A. Wood (New Zealand)
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Predicting distribution and relative abundance of mid-trophic level organisms using oceanographic parameters and acoustic backscatter
Abstract: Data on the distribution and abundance of mid-trophic level organisms (MTLOs) in the ... resilience to climate change. We used acoustic data collected at 38 kHz frequency across the Southern Ocean ... mesopelagic zones, using sea surface temperature, time of day (day/night) and depth. The resulting models ... predicted backscatter reasonably well in the Pacific sector of the SO, and in an independent dataset in the ...
Meeting Document : WG-EMM-18/P07 : Autor(es): P.C. Escobar-Flores, R.L. O’Driscoll and J.C. Montgomery
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Krill length frequency distribution in Subarea 48.3 in January–April 1988 in relation to sources of its origin
distributed in the coastal zone of about 7-40 miles wide, further is situated the boundary zone at the ... considered in the frame of hypothesis of krill resources forming from two sources: Antarctic Circumpolar ... Current and Weddell Scotia Sea water flow. It is shown, that small krill with the mode of about 33 mm is ... distance of about 30-60 miles, beyond boundary zone occurs larger krill with the mode of about 49 mm. Krill ...
Meeting Document : WG-EMM-03/40 : Autor(es): F.F. Litvinov, V.N. Shnar, A.V. Zimin and V.V. Lidvanov (Russia)
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Assessment models for Patagonian toothfish in research block 58.4.3a_1 of Division 58.4.3a, Elan Bank for the years 2005-2014
Abstract: We made two sensitivity runs of age-structured and two fisheries (≥1300 m and < 1300 ... m) CASAL models for stock status assessments of Dissostichus eleginoides in the research block ... 58.4.3a_1 following the recommendations of the WG-FSA-2014 meeting. Two runs were carried out: including or ... ELAN_1 model reflected a large number of recaptures of the tags released concentrated in the western area ...
Meeting Document : WG-SAM-15/24 : Autor(es): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Modelling growth of Antarctic krill: a new approach to describing the growth trajectory
a step-growth function that combines models of instantaneous growth rate (IGR) at moult calibrated ... from population-level data consisting of modal lengths obtained from a time sequence of length ... frequency samples. We develop an alternative approach to predicting the trajectory of length over time using ... from direct measurements of individual pre- and post-moult krill sampled from the wild with a model of ...
Meeting Document : WG-EMM-05/27 : Autor(es): S. Candy and S. Kawaguchi (Australia)
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Long-distance movements of tagged Patagonian (Dissostichus eleginoides) and Antarctic toothfish (D. mawsoni)
Abstract: At WG-SAM-16, the Working Group discussed the implications of toothfish moving long ... to date the majority of tagged toothfish movements were very restricted in distance and requested ... that the Secretariat update its previous meta-analysis of the long distance movement of tagged fish ... throughout the CCAMLR area for consideration by the WG-FSA (WG-SAM-16, paragraphs 4.46 – 4.48). Analyses of ...
Meeting Document : WG-FSA-16/25 Rev. 1 : Autor(es): CCAMLR Secretariat
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An exploration of the biological data used in the CCAMLR Subarea 48.3 Patagonian toothfish stock assessments
subarea 48.3 are analysed here, particularly whether the proportion of females in the catch, maturity at ... or maturity through time, after the effects of confounding factors were included in the analysis ... . Author(s): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby Title: An exploration of the ...
Meeting Document : WG-SAM-2019/32 : Autor(es): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby