Résultats de la recherche

1. Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)

   % of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... indicate the estimated pre-exploitation biomass. The precautionary krill catch limit in Area 48 was ... 20-year fi shing history, the precautionary catch limit had never been approached. Furthermore, the ... the consequences of setting the annual krill catch limit to a fi xed fraction of the estimate of ... to more than 95% of the total catch. The calculations were based on haul-by-haul data from the ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Auteur(s): Kasatkina, S.M. and V.F. Ivanova

2. Management and assessment options for the crab fishery around South Georgia

   for a conservative approach to management. Such an approach includes the use of catch/effort controls ... relies on information on the growth and life-history of P. spinosissima. Implementation of the catch ... -per-recruit. (Base catch limit on the abundance of males of legal size and above.) Seasonal ... catch/effort controls in addition to the 'size-sex-season' controls. Implementation of both sets of ... catch/effort controls also requires estimates of stock abundance, which could be obtained by depletion ... by a range of catch and effort controls. Most crustacean stocks appear to have highly variable ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Auteur(s): Basson, M. and D.D. Hoggarth

3. CCAMLR ecosystem monitoring and management: future work

   predators in the assessment of catch limits. The success of this process is due to the formulation of a ... yield (catch limit) for krill fi sheries following a fi shery-independent survey of krill biomass ... - tion model to assess the appropriate catch limit to meet the objectives based on an estimate of krill ... account of the needs of predators in the assessment of catch limits. The success of this process is due ... , Euphausia superba) but does take account of the needs of predators in determining catch limits. Its ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Auteur(s): Constable, A.J

4. Status of the Polish FIBEX acoustic data from the West Atlantic

   , CCAMLR INTRODUCTION CCAMLR has set a precautionary catch limit for Antarctic krill in Area 48 ... (Conservation Measure 32 /X). This catch limit (SC-CAMLR, 1991b, paragraphs 6.31 to 6.66) is based on ... precautionary catch limit was set, the Scientific Committee of CCAMLR (SC-CAMLR) suggested that the FIBEX ... were used as a basis for this precautionary limit as they were derived from a large-scale synoptic ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 125–132 : Auteur(s): Trathan, P.N., J. Kalinowski and I. Everson

5. Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

   , and an algorithm for specifying the levels of regulatory mechanisms (e.g., a catch control law) that ... illustrative exercise, the choice of catch control law parameters would probably lie between (C c =1 million ... course of events, the catch limit produced by the management procedure should be accepted unchanged by ... the Committee, and that the catch limit should only be varied in the face of very strong contrary ... levels of regulatory mechanisms (e.g., a catch control law) that depends on the results of the ... choice of catch control law parameters would probably lie between (Cc=l million tonnes; cr=15%) and (Cc ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Auteur(s): Butterworth, D.S.

6. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

   model as a basis for setting catch limits in the krill fishery, while the GYM is used for assessing ... pre-exploitation spawning biomass. This bias in the krill yield model will result in the catch level ... consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass ... setting catch limits in the krill fishery, while the GYM is used for assessing yield in other finfish ... the krill yield model will result in the catch level given for a set probability of critical ... model as a basis for setting catch limits in the krill fishery. The decision rules relate to the ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Auteur(s): Constable, A.J. and W.K. de la Mare

7. A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3

   , unregulated and unreported (IUU) catches of fish and by-catch of birds. It utilises high quality, well ... , and confidence intervals for, fish and bird catches by IUU vessels. In order to estimate an IUU catch ... total annual IUU catch of toothfish and birds was calculated using a second simulation model. Subarea ... 48.3 was divided into six areas for the purposes of the estimation of fish and bird catch associated ... and by-catch of birds. It utilises high quality, well-documented fi sheries protection vessel (FPV ... bird catches by IUU vessels. In order to estimate an IUU catch there must have been at least one ... estimated from the known encounters of FPVs with licensed vessels. The total annual IUU catch of toothfi sh ... for the purposes of the estimation of fi sh and bird catch associated with IUU fi shing. The mean and ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Auteur(s): Agnew, D.J. and G.P. Kirkwood

8. Protecting young fish and spawning aggregations of Champsocephalus gunnari in Subarea 48.3 (South Georgia): a review

   the entire catch limit can be taken, rather than fishing activity being more spread out over the ... size limit was adopted at that meeting. * Introduced to reduce further the catch of young C. gunnarl ... fishery should be closed between June and November, providing the catch limit has not been reached ... monitoring and evaluation of the catch of juvenile and larval C. gunnari in the krill fishery (e.g. Everson ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 75–86 : Auteur(s): Parkes, G.B

9. The use of patent databases to predict trends in the krill fishery

   information shows similar trends to the catch and notification information, and the three sources of ... (210 000 tonnes) is only a fraction of the estimated precautionary catch limit (8.6 million tonnes ... ecosystem-based approach to management. The krill fishery is unique because the current level of catch ... similar trends to the catch and notification information, and the three sources of information can be ... (Figure 1), however, rose dramatically from a notified catch of around 165 000 tonnes for the 2000/01 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 135–144 : Auteur(s): Foster, J., S. Nicol and S. Kawaguchi

10. Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks

    krill fishery, it is shown that the catch-per-haul variables are associated with the fishing regime of ... -term behaviour patterns have an impact. All these factors limit the extent to which CPUE can be used in ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Auteur(s): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov

Pages