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1. Spawning locations of mackerel icefish at South Georgia

   . There are also indications of a possible second spawning season in January, although the evidence is ... weak. Concentrations of larval icefish within Cumberland Bay are an order of magnitude higher than in ... , spawning, South Georgia, CCAMLR INTRODUCTION Over the past 30 years there has been a fishery, large in ... following day, two on 20 March and 14 on 30 March. 011 5 April the catch was just three, and no further ... place close inshore or in the fjords. Added weight was given to these conclusions by Kock (1981), who ... of the same year. Further evidence that spawning occurs in the inshore waters has come from the ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Автор(ы): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock

2. Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements

   tonnes- at the low end of values that have been suggested in the past. The differences between our ... . Additionally, the current precautionary catch limits in the South Atlantic are set using a superseded acoustic ... survey of the South Atlantic in January 2000 may result in an effective biomass which is greater than the ... value used in the past. The seasonal and local consequences of large catch limits will have to be taken ... conducted regularly in some areas for nearly 20 years, and there is now a good appreciation of the range ... values within that range. In recent years there has been considerable research into the distribution ... large amount of research that has been carried out around the Antarctic in recent years. This paper ... abundance has been subject to considerable research over the last 20 years (Greene et al., 1998), and it ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Автор(ы): Nicol, S., A.J. Constable and T. Pauly

3. Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data

   number of concentrations and analytical justification for search data Abstract / Description:  In this ... of concentrations of krill (Butterworth, 1988; Mangel, 1988) in a given region of the Southern Ocean ... . Sample computations are performed, using data collected by Soviet research/survey vessels in the early ... 1980s. These examples highlight the need for a navigational log as well as a fishing log in order to ... 18.9 hrs 693.6 (4-8), 61.2 (8-9) 1 290.4 50" 40' 20" o' 20' 40' 10' 30' 30' 10" 50" 60" 60 ... 10 15 20 30 40 50 60 70 Concentration Radius (nml) Figure 16: Histogram of the radii of ... SEARCH DATA M. Mangel Abstract In this paper, I show how data that are routinely collected by ... , 1988) in a given region of the Southern Ocean. Sample computations are performed, using data ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Автор(ы): Mangel, M.

4. Modelling and decision making as part of the CCAMLR management regime

   of CCAMLR Article II. Eight attributes (purpose, description, variables, driving forces, time ... horizons, time steps, constraints and data) were identified in an attempt to provide a blueprint for the ... for managers of renewable resources in terms of CCAMLR Article 11. In keeping with the ideas put ... . Nevertheless, the principles outlined in Article 11 of the Convention stress the need to conserve the ... disruption of ecosystem functioning. In these terms, Article 11 enunciates a mUltiplicity of objectives ... consider predators in view of the requirements in Article 11 for restoring depleted populations ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 295-322 : Автор(ы): Miller, D.G.M.

5. Do krill and salps compete? Contrary evidence from the krill fisheries

   krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... clear relationship was observed in the Elephant Island area. Possible reasons for these phenomena are ... the catches was evident when both salps and krill were taken together. In the Livingston Island area ... salp blooms may occur in different periods in some years. Do Krill and Salps Compete? When ... particles greater than 20 pm (Wright et al., 1996). Therefore, in our case, salps may have been excluded ... March, the peak of salp blooms may occur in different periods in some years. (iii) Results of the ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Автор(ы): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

6. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

   (Dissostichus eleginoides) caught in the commercial fishery within Subarea 48.3. The results for 1996 indicate ... that L m50 occurs at 78.5 cm total length for male and 98.2 cm for female fish. In 1997 the results for ... male fish were essentially the same. For female fish there is evidence that in 1997 a significant ... allowing for this bias indicates that L m50 for female fish in 1997 was no different to that for 1996. The ... leading to an enlarged ovary of about 20% of the fish total mass. Spawning occurs in the period July to ... statistically significant difference (p > 0.05 from deviance ratio tests) in any parameter between years ... with the estimates for 1996. This, together with the lack of evidence for any change in the slope of ... of 98.2 cm for all females in both years. DISCUSSION Months March/ April 1996 May/June 1996 ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Автор(ы): Everson, I. and A.W. Murray

7. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   whether a feedback approach is likely to achieve the multiple objectives that EBM implies in the complex ... Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... spatially resolved annual catch limits in response to estimates of the state of the system. It suggests that ... model), in multiple future years, from their TRPs. It also penalises interannual variability in ... of 2 2 20 0 ' k k k Q R S x x u u u æ ö÷ç - + - + ÷ç ÷÷çè ø  in steady state, which can be ... process can be controlled through weight- ing. The area‐specific catches for the first year in the ... CCAMLR aims to develop a feedback manage- ment approach for the Antarctic krill fishery in the Scotia ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Автор(ы): Hill, S.L. and M. Cannon

8. On reproduction of Electrona carlsbergi (Tåning)

   of the Southern Ocean. From materials available it has been ascertained that E. carlsbergi spawns in ... synchronous. Vitelline eggs have a diameter from 150 to 650 μm; in hydrated oocytes it is up to 900 μm ... summer/autumn in the Southern Hemisphere. File:  23-Mazhirina.pdf ... . Magnification - 20 x 10. Figure 2: E. carlsbergi ovary at maturity stage VI-VIII. Residual follicle in the ... centre. Older oocytes in phase of intensive trophoplasmatic growth. Magnification - 20 x 10. 405 ... stage IT. Older oocytes in monolayer follicle phase. Magnification - 20 x 10. Figure 5: E. carlsbergi ... WG-FSA-90/20 ON REPRODUCTION OF ELECTRONA CARLSBERGI ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Автор(ы): Mazhirina, G.P.

9. Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias

   programs. The methods that have been used in CCAMLR tag-recapture programs to mitigate such biases, or to ... account for their effects in stock assessments for Dissostichus spp. are also summarised. In nearly all ... mawsoni) in the Ross Sea for the years 1997–98 to 2010–11. Document WG-FSA-11/42. CCAMLR, Hobart ... estimates of population size. In the CCAMLR area, tagging programs have existed in some fisheries for ... vessels commenced in the fishery at Heard Island and the McDonald Islands (Division 58.5.2) in 1998 ... (Williams et al., 2002) and at South Georgia (Subareas 48.3) and in the Ross Sea (Subarea 88.1) in 2000 ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Автор(ы): Welsford, D.C. and P.E. Ziegler

10. Results of fish larvae sampling by means of fine-meshed samplers attached to a bottom trawl

    bottom trawl Abstract / Description:  Fine-meshed samplers were attached to the top of a bottom trawl in ... order to provide information on the composition, distribution and abundance of Antarctic fish larvae in ... sized meshes for sampling larvae in the bottom zone and the resistance of the samplers to damage during ... , more vulnerable to damage. The nets were more effective in sampling when attached to the top of the ... abundance of postlarval fish was highest in hauls 20, 22 and 36, which were carried out in the shallow (108 ... : 134 p. 73 Table 1: Station 19 20 22 24 25 26 30 31 32 33 34 35 36 37 38 45 ... WG-FSA-88/20 RESULTS OF FISH LARVAE SAMPLING BY MEANS ... -meshed samplers were attached to the top of a bottom trawl in order to provide information on the ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 69-86 : Автор(ы): Ślósarczyk, W. and I. Wójcik

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