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1. Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48

   precautionary catch limit on krill (Euphausia superba) in Statistical Area 48. The measure also implies an ... ) the degree to which information on biological relationships is considered; (ii) the cost of data ... collection; (iii) the reliability of required information; (iv) the ease of enforcement; (v) the effects on ... current fishing patterns; and (vi) the potential for delay in implementing the alternative. An alternative ... . The data used to calculate the historical catch distribution are probably reliable. There are no ... measured once, there would be no recurring, long-term data collection costs. The data are also highly ... (Euphausia superba) in Statistical Area 48. The measure also implies an application in future of ... or local area krill catch limits are evaluated relative to six criteria: (i) the degree to which ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Автор(ы): Watters, G. and R.P. Hewitt

2. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... were no significant differences in growth parameters calculated for males and females. Von Bertalanffy ... growth parameters for both sexes combined were: L ∞ = 690 mm, K = 0.069 and t 0 =-2.4. The size at sexual ... operations in the Heard Island region in 2000. The length at first maturity (L 50) was 418 mm (total length ... 1992 and 1993. The range of estimated ages was 4 to 25 years. There were no signifi cant differences ... geographical separation of the two sites, seasonal variations in reproductive condition linked to the ... no signifi cant difference in the values of L50 and Lm50 calculated for females and males (P > 0.01 ... for the sample was 4 to 25 years (Figure 6). As there was no signifi cant difference between the fi ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Автор(ы): van Wijk, E.M., R. Williams and A.J. Constable

3. Seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, April to May 1994

   -seven line sets were observed and 98 deaths of seabirds were recorded over 20 sets; no deaths occurred ... during hauls. The 16 sets made at night contributed 15% of overall mortality, all of white-chinned ... petrels (Procellaria aequinoctialis); the four day sets contributed 85% of deaths, with giant petrels ... disproportionately affected in relation to their numbers near the fishing vessel; giant petrels may be ... deaths of seabirds were recorded over 20 sets; no deaths occurred during hauls. The 16 sets made at ... the South Sandwich Islands. Although no seabird deaths were recorded during the setting of seven ... hooks laid were of the type Maruto no. 26. Approximately 5% were of the type Maguro no. 14 which has a ... main line was more than 1 cm thick, there were no swivels, and the streamers consisted of lines more ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 111–121 : Автор(ы): Ashford, J.R., J.P. Croxall, P.S. Rubilar and C.A. Moreno

4. Assessment of krill flux factors in waters of South Orkney Islands during summer 1996

   the Weddell Sea. The study area covered sites where high krill concentrations had often been observed ... 1996 Abstract / Description:  This paper describes the results of an experiment conducted from 19 ... February to 7 March 1996 to assess krill flux factors in Subarea 48.2. The study area (80 x 240 n miles ... ) was located in the zone of interaction between waters of the Antarctic Circumpolar Current (ACC) and ... waters of the Antarctic Circumpolar Current (ACC) and the Weddell Sea. The s tudy area covered sites ... Frontal Zone. The study area covered sites where high krill concentrations had often been observed in ... ASSESSMENT OF KRZLL FLUX FACTORS IN WATERS OF THE SOUTH ORKNEY ISLANDS DURING SUMMER 1996 S.M. Kasatkina ... describes the results of an experiment conducted from 19 February to 7 March 1996 to assess krill flux ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 195–204 : Автор(ы): Kasatkina, S.M., V.N. Shnar, M.I. Polischuk, A.M. Abramov and V.A. Sushin

5. Consideration of major issues in ecosystem monitoring and management

   / Description:  This paper outlines the requirements of an ecosystem approach to the management of Southern ... Ocean resources and highlights the need for information on harvested and dependent species, their ... interactions and the manner in which their populations vary naturally. Large-scale interactions are catered for ... in the Krill Yield Model (KYM). Smaller-scale interactions centre around three main categories: the ... ., 1994) that indicates reliance on krill. There have been no reported studies on the metabolic rate of ... . The index ranges from It = 0, indicating no spatial overlap during period t, to It = 1, indicating ... foraging in areas local to their breeding site during the breeding season. Outside the breeding season ... constrained by the need to return to a breeding site, they are able to search for food in other localities ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Автор(ы): Everson, I

6. Possible effects of different levels of krill fishing on predators – some initial modelling attempts

   modelling attempts Abstract / Description:  An initial attempt is made to develop the modelling framework ... suggested by the Joint Meeting of CCAMLR's Working Group on Krill (WG-Krill) and Working Group for the ... CCAMLR Ecosystem Monitoring Program (WG-CEMP) in 1992, in order to investigate the possible effects of ... krill fishing on krill predators. First, estimates are made of the parameters of predator survival rates ... model for deterministic krill dynamics (i.e., no noise about the krill stock-recruitment relationship ... a,K in this same proportion p of the years when there is no krill fishing. Similarly, the krill ... , this procedure leads to an immediate problem for the Addie penguin and the Antarctic fur seal: no sIM ... starting level, which corresponds to a y = 0 (no krill fishing) situation; this is taken to be K, for the ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Автор(ы): Butterworth, D.S. and R.B. Thomson

7. A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship in Subarea 48.3

   in Subarea 48.3 Abstract / Description:  During the 2005 fishing season, experiments on the ... , fish with a variety of injuries were selected to see if this affected recovery. In the final analysis ... initial condition had a higher survivorship than large animals and those in poor condition. The results ... confirmed the 95% rate. File:  12agnew-etal-fsa19.pdf ... . No limit was put on the number of fish to be subjected to this treatment, since the actual ... . on the Polarpesca I; good – fish very lively, with only minor abrasions and no major visual damage ... a good, average or poor state. On vessels where no assessment was made it was assumed that the ... analysis (seven, in total, froze within the 12-hour period on the Viking Bay and the Isla Santa Clara ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 279–289 : Автор(ы): Agnew, D.J., J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones, G. Breedt, S. Du Plessis, J. Van Heerdon and G. Moreno

8. Survey design to estimate krill abundance during FIBEX

   of the primary aims of FIBEX (First International BIOMASS Experiment), 1981 was to study the ... methodology for assessing the abundance of krill. The survey design used in the southwest Atlantic study area ... of the FIBEX is described in this paper. Sampling involved the use of echo sounders for estimating ... krill abundance as well as collection of data on the size, density and distribution of krill swarms. In ... survey in the Southern Ocean. Review and Outlook Memoirs of the National Institute of Polar Research No ... ABUNDANCE DURING FIBEX I. Everson, I. Hampton, G.M. Jolly Abstract One of the primary aims of FIBEX ... (First International BIOMASS Experiment), 1981 was to study the methodology for assessing the abundance ... of krill. The survey design used in the southwest Atlantic study area of the FIBEX is described in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 253–263 : Автор(ы): Everson, I., I. Hampton and G.M. Jolly

9. Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels

   no maintenance. An experiment was conducted on a Spanish-system longline vessel to determine the ... with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... fishing operations the netting bags abrade on the seabed causing rocks to be lost and the weights to ... relationship between the sink rates of longlines equipped with bags of rocks (4, 6 and 8 kg) and those with ... the Tierra del Fuego). Because there is no horizontal link between adjacent branch/connecting lines ... There are a number of advantages associated with the use of steel weights. Once acquired, no labour is ... required to build the steel weights and they require virtually no maintenance at sea. They are also more ... smaller, smooth sided and contain no netting bags, features that may reduce the fre- quency of fowling on ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Автор(ы): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon

10. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

    selected for the study, consisting of 120 females and 98 males. The age of fish was estimated by counting ... in moulds. The precision of age estimates between readings was tested applying both the average ... percent error (APE) and the coefficient of variation (CV). Conversely, the accuracy of age estimates was ... not tested, so that present ageing data haveto be considered with caution. The estimated age range was ... 3. Applying the likelihood ratio test to the estimated VB growth parameters, no significant ... February–March 2006 and January 2007. A total of 218 specimens were selected for the study, consisting of ... 120 females and 98 males. The age of fish was estimated by counting annuli on transverse sections ... obtained by grinding and polishing whole otoliths embedded in epoxy resin in moulds. The precision of age ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Автор(ы): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

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