Resultados de la búsqueda
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Preliminary assessment of the South Georgia toothfish stock, 2007
higher than was estimated last year. 2. Improvements are made to the fit of tag data through (a ... estimates of catches at age from 1998 to 2006 (based on random sampling of the catch for age determination ... ). Fits of all data (CPUE; catches at length for the early fishery; catches at age for the later fishery ... estimates year class strength which corresponds, in some years, with estimates made from the South Georgia ...
Meeting Document : WG-FSA-07/29 : Autor(es): D.J. Agnew, R. Hillary and J. Pearce (United Kingdom)
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On the examining of krill flux
) in the choosen polygones, the proves of active long-distance migrations of krill are considered ... Abstract: In connection with future calculation of volume of krill immigration/emigration (flux ... results of calculations, is the valuation of krill retention time. To make it more correct and natural it ... is necessary to take into account the biological characteristics of krill, especially for the regions ...
Meeting Document : WG-EMM-95/19 : Autor(es): Makarov, R.
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Stock assessment of the Patagonian toothfish (Dissostichus eleginoides) at South Georgia
eleginoides, in the vicinity of Shag Rocks, South Georgia. Assessment of this stock is not possible by ... conventional methods because the bulk of the adult population may be dispersed over a wide area in deep water ... whereas the Shag Rocks’ shelf may be a nursery ground for juveniles. An assessment of the stock has been ... stock. Author(s): I. Everson (United Kingdom) Title: Stock assessment of the Patagonian toothfish ...
Meeting Document : WG-FSA-91/20 : Autor(es): I. Everson (United Kingdom)
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Preliminary assessment of Subarea 48.3 mackerel icefish, Champsocephalus gunnari, based on the January 2013 survey
Abstract: A bootstrap procedure was applied to estimate the demersal biomass of mackerel icefish ... (Champsocephalus gunnari) in CCAMLR subarea 48.3 using data from the UK trawl survey conducted in January 2013. The ... fishing season. Application of the CCAMLR rule, which ensures 75% biomass escapement after a two year ... CCAMLR harvest control rule was then applied to determine catch limits for the 2013/14 and 2014/15 ...
Meeting Document : WG-FSA-13/27 : Autor(es): C. Darby and T. Earl (United Kingdom)
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Note on relationship between the Antarctic krill and annual variation of ice edge during 1979 to 1992
the sea ice in the sea area around the South Shetland Islands are described. Mean size of krill near ... Abstract: During 1979 to 1991, relationship between the size of Antarctic krill and the extent of ... the coastal zone appeared to be small in summer season just after a strong ice extent had occurred ... . This implies that strong recruitment of small size krill had occurred just after the season with the ...
Meeting Document : WG-KRILL-93/26 : Autor(es): M. Naganobu and S. Kawaguchi (Japan)
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A simple approach for calculating the potential yield of krill from biomass survey results
Abstract: Estimates are calculated for the parameter λ in the yield equation Y = λ M B0 for a ... kri11 fishery in which both the fishery and kri11 growth are seasonal. The criterion used for the ... calculations is that the probability that the kri11 spawning biomass drops below 20% of its average pre ... -exploitation level over a 20 year period of harvesting should not exceed l0%. The value of λ depends strongly ...
Meeting Document : WG-KRILL-91/24 : Autor(es): D.S. Butterworth (South Africa) and M. Basson (United Kingdom)
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Krill: the power lunch of Antarctica
coverage on board krill vessels, identifying priority objectives for research and development in support of ... the management of the krill fishery, conducting a new krill synoptic survey, keeping the trigger level ... procedures with the aim of reducing speculative notifications, and requiring mandatory ice-strengthening for ... krill fishing vessels. Author(s): Submitted by ASOC Title: Krill: the power lunch of Antarctica ...
Meeting Document : CCAMLR-XXXIII/BG/25 : Autor(es): Submitted by ASOC
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Nesting behaviour of the icefish Chaenocephalus aceratus at Bouvetøya Island, Southern Ocean (CCAMLR Subarea 48.6)
Abstract: In this paper we describe in situ observations on nesting by the Scotia Sea (or ... blackfin) icefish Chaenocephalus aceratus that constitute the first substantive evidence of egg brooding ... and parental care by species of the family Channichthyidae. These novel observations are enriched by ... descriptions of the seafloor community that is impacted by fish nesting. Given the vulnerability of spawning ...
Meeting Document : WG-FSA-04/26 : Autor(es): H.W. Detrich III, C.D. Jones, S. Kim (USA), A.W. North (United Kingdom), A. Thurber (USA) and M. Vacchi (Italy)
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Preliminary insights of Antarctic toothfish sub-adults life-history traits from the southern Weddell Sea (Subarea 48.5)
Abstract: A few sub-adults of the Antarctic toothfish (Dissostichus mawsoni) were collected by ... bottom trawling carried out by the RV Polarstern in the southern Weddell Sea (Subarea 48.5) (PS82, ANT ... -Larsen Ice Shelf. In this document we report first data on individual age, gonad stage of maturity and ... -XXIX/9, 19 December 2013- 5 March 2014). Fishes were caught on the shelf and slope off the Riiser ...
Meeting Document : WG-FSA-18/06 : Autor(es): M. La Mesa, F. Donato and E. Riginella
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Tracer trajectories from the western shelf of South Georgia: ship displacement data
the west of South Georgia. The data were collected over a six-week period during 1986. A distance ... weighted interpolation was used to obtain tracer trajectories in this irregular data grid. The vector field ... . Particles getting onto the shelf become retained with little escape after a run of 100 days. Some of the ... trajectories are extremely complex. Particles to the north of the shelf can get up onto the shelf. Only those ...
Meeting Document : WS-Flux-94/10 : Autor(es): E.J. Murphy, I. Everson and C. Goss (United Kingdom)