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1. Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)

   very low productivity. Estimates of average biomass were made by comparison of standardised catch rates ... allowable catch (1 380 tonnes).   File:  03agnew-et-al.pdf ... has never managed to take more than 48% of the catch limit in Division 58.4.2. In the east (Division ... 58.4.1) fishing has been more predictable, and the catch limit has been reached in most years. This ... areas). In addition, a catch limit assuming a long-term sustainable exploitation rate of 5% of ... A C E C E G Catch limit (tonnes) 260 260 260 200 200 200 TOA catches (tonnes) 2005 62 15 ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Автор(ы): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán

2. The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model

   provide advice to CCAMLR on the spatial allocation of the Antarctic krill catch limit for the Scotia Sea ... - cautionary catch limit. The former represents CCAMLR’s operational krill catch limit, or trigger level ... , which is 11% of the cur- rent precautionary catch limit (Conservation Measure 51-01: CCAMLR, 2011 ... allowable catch at the precautionary catch limit. Responses >0.1 occurred in penguin health and ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Автор(ы): Hill, S.L. and J. Matthews

3. The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model

   implement because of the variation in catch rates shown by the fisheries. Non-fluctuating random and ... fluctuating random catch histories are simulated and the performance of four models for making closure ... successful model determines the trend of catch rates using linear regression over the latest four reporting ... incorporate a mechanism for adjustment of the limit for a decision, L, in relation to the catch rate. All ... (currently defmed in Conservation Measure 25/IX) with Catch Type 1. The effect of L, the catch limit ... the Secretariat of CCAMLR, have been difficult to implement because of the variation in catch rates ... shown by the fisheries. Non-fluctuating random and fluctuating random catch histories are simulated and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Автор(ы): Agnew, D.J.

4. 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 : Автор(ы): Kasatkina, S.M. and V.F. Ivanova

5. 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 : Автор(ы): Basson, M. and D.D. Hoggarth

6. 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 : Автор(ы): Constable, A.J

7. 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 : Автор(ы): Trathan, P.N., J. Kalinowski and I. Everson

8. 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 : Автор(ы): Butterworth, D.S.

9. 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 : Автор(ы): Constable, A.J. and W.K. de la Mare

10. 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 : Автор(ы): Agnew, D.J. and G.P. Kirkwood

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