Résultats de la recherche

1. Notes on Champsocephalus gunnari biology, availability, diet and spatial distribution in the South Shetland and South Orkney Islands (Subareas 48.1 and 48.2)

   Abstract:  Stocks of the mackerel icefish Champsocephalus gunnari in the Southern Scotia arc ... characteristics than stocks in the Northern Scotia Arc. The history of commercial C. gunnari exploitation in the ... Southern Scotia Arc was short lived and intense, and led to the collapse of the stocks. Stocks in this ... Livingston Island. The dietary composition of C. gunnari appears to be more diverse in the South Orkney ...

   Meeting Document : WAMI-01/10 Rev. 1 : Auteur(s): C.D. Jones and J. Emery (USA)

2. Fish distribution and biomass in the Heard Island zone (Division 58.5.2)

   . In order to assess the potential of this area for commercial fishing, and to obtain some preliminary ... Paper Title:  Fish distribution and biomass in the Heard Island zone (Division 58.5.2) Abstract ... / Description:  Division 58.5.2 encompasses the southern part of the Kerguelen plateau, and contains Heard ... distribution, abundance and biology of the most important species, covering a number of years and seasons. Five ... ., 1985). In order to assess the potential of this area for commerc ia l f ishing, a n d t o ob t a ... in contact with the bottom. Survey design - Estimates of abui~dance were derived from a swept ... the results from these two strata in autumn 1990; * the minimum number of trawls on Discovery ... density of C. gunnari found there during autumn 1990 and on the joint Soviet/Australian survey in 1987 ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Auteur(s): Williams, R. and W.K. de la Mare

3. Physical forcing in the southwest Atlantic: ecosystem control

   Abstract:  In the southwest Atlantic sector of the Southern Ocean, temporal variability in the ... temperature at South Georgia shows the presence of high levels of autocorrelation, with periodicity evident in ... physical environment has been recorded since the early part of the last century. For example, ocean ... anomaly data for the El Niño 4 region in the Pacific show that variability at South Georgia also reflects ...

   Meeting Document : WG-EMM-04/34 : Auteur(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)

4. Proposal for an extension to the mark recapture experiment to estimate toothfish population size in Subarea 48.4

   assessment of D. eleginoides stock size in the Northern Area of 48.4 estimates a vulnerable biomass of ... 48.4 in the 2008/09 fishing season so as to allow for a full assessment of D. eleginoides stock size in ... introduced for bycatch species in the Northern Area of 48.4, set at 16% Macrourus spp. and 5% Rajid spp of ... between 1,000 to 2,000 tonnes. 3. The UK proposes to continue the mark-recapture experiment in Subarea ...

   Meeting Document : WG-FSA-08/46 : Auteur(s): J. Roberts and D. J. Agnew (UK)

5. KRILL FISHERY BEHAVIOUR IN THE SOUTHWEST ATLANTIC

   to year variability in the probabilities of operating within a local range after a number of tows. In ... /operational requirements in an area. These kinds of analysis show the importance of good year-round data from ... behaviour of krill fishery. Analysis of travel distance in relation to catch level revealed a pattern that ... close even after considerable number of hauls. The scales of distance after 50 tows from the original ...

   Meeting Document : WG-EMM-08/39 : Auteur(s): S. Kawaguchi (Australia)

6. DEFINING TAG RATES AND TACS TO OBTAIN SUITABLY PRECISE ABUNDANCE ESTIMATES FOR NEW AND EXPLORATORY FISHERIES IN THE CCAMLR CONVENTION AREA

   formula that gives the expected coefficient of variation of the abundance estimate in terms of the number ... of releases and recaptures, which can in turn be expressed in terms of the tagging rate per tonne ... given precision in the Petersen abundance estimate. To show the reliability of the precision ... be extremely useful in terms of defining suitable catch levels and tagging rates required to obtain a ...

   Meeting Document : WG-SAM-08/06 : Auteur(s): R.M. Hillary (UK)

7. Surface water circulation in krill fishing areas near the South Shetland Islands

   deployed in shelf and oceanic waters to the north of the South Shetland Islands. Each buoy was deployed ... sluggish southwest current with a series of small-scale circular and semi-circular flows in the shelf ... calculations. The picture obtained of the surface circulation was considered in conjunction with the ... distribution of krill catches taken in the area by Japanese vessels during the period from 1981 to 1994. It is ... current with a series of small-scale circular and semi-circular flows in the shelf region, whereas the ... . The picture obtained of the surface circulation was considered in conjunction with the distribution ... of krill catches taken in the area by Japanese vessels during the period from 1981 to 1994. It is ... which contribute to the formation of stable krill concentrations in the area. The observed long ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 125–136 : Auteur(s): Ichii, T. and M. Naganobu

8. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL

   datasets and to the choices of parameters used in both the stock assessment and projections. It is ... Division 58.5.2. It updates the model used at WG-FSA in 2006 using data from the 2007 season as well as ... 2006 data not available for WG-FSA in 2006. It also includes the following refinements: (i) estimation ... of the coefficient of variation (CV) for length given age, (ii) use of non-informative priors for ...

   Meeting Document : WG-FSA-07/53 Rev. 1 : Auteur(s): S.G. Candy and A.J. Constable (Australia)

9. Upward adjustments to local catch limits for the krill fishery in Subarea 48.1

   the gSSMUs defined in another compilation of vignettes (AERD 2016a, pp. 3-13).  We propose upward ... greater than one. We advocate real-life testing of the ideas proposed here to prove the concept; in ... adjustments to local catch limits for the krill fishery in Subarea 48.1.  We use the term local catch limit to ... refer to a catch limit that applies to a group of SSMUs (gSSMU), and the work presented here is based on ...

   Meeting Document : WG-EMM-16/47 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

10. Ukrainian complex marine expeditions in the Southern Ocean

    measuring systems, and this is one of the most prominent examples of public-private partnership in Antarctic ... research. In particular, during the marine expedition, continuous monitoring of the physical and chemical ... -term monitoring of the spread of polluting chemicals in coastal ecosystems, as well as prediction of ... zones of increased biological productivity in the CAMLR Convention Area. Author(s):  E. Dykyi, V ...

    Meeting Document : WG-EMM-2019/62 : Auteur(s): E. Dykyi, V. Komorin and A. Fedchuk

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