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1. Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys

   Paper Title:  Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by ... species, Electrona carlsbergi, were found only in some limited areas. The bulk of the surveyed biomass of ... myctophids was found to be within the Antarctic Convergence area. File:  25-Filin-et-al.pdf ... SECTOR OF THE SOUTHERN OCEAN AS ESTIMATED BY ACOUSTIC SURVEYS A.A. Filin, K.V. Gorchinsky and V.M ... this reason, special consideration should be given to evaluating the abundance of mesopelagic fish by ... sector of the Southern Ocean were conducted by the RV Artemida from 1987 to 1989. These surveys covered ... data processing. Ship coordinates were obtained by a satellite navigational system FSN-70 (FUR UNO ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Auteur(s): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva

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

   Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... BY-CATCH IN AUSTRALIAN SUB-ANTARCTIC TRAWL FISHERIES E.M. van Wijk , R. Williams and A.J ... sub-Antarctic waters of the Southern Ocean (Iwamoto, 1990). They are commonly caught as by- catch in ... by-catch comprises up to 17% of the total catch (SC-CAMLR, 1998). One of the objectives of CCAMLR ... , increased attention is now being focused on taxa that are most commonly caught as by-catch (e.g ...

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

3. A simulation study of krill fishing by an individual Japanese trawler

   Paper Title:  A simulation study of krill fishing by an individual Japanese trawler Abstract ... biomass might decline is investigated. Generally the indices respond by dropping relatively less than the ... . A major inconsistency is found: haul times are a factor of 4-5 times greater in reality than in the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Auteur(s): Butterworth, D.S.

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

   become progressively lighter, requiring ongoing repair. This problem can be solved by use of ... loss by toothed whales) were tested in the experiment. Spanish-system longlines with 8 kg rock weights ... every 40 m averaged 0.22 m s –1 to 2 m depth, which would be equal to, or exceeded by, lines with 5 kg ... repair. This problem can be solved by use of hydrodynamically shaped (e.g. torpedo-shaped) steel weights ... modified version of the former method to avoid fish loss by toothed whales) were tested in the experiment ... be equal to, or exceeded by, lines with 5 kg steel weights. Sink rates of Chilean longlines greatly ... likely to be most dan- gerous to seabirds. The weights used by Spanish-system operators typically ...

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

5. Results of fish stock assessment survey, South Georgia region, November - December 1986

   between 29 November and 17 December 1986 by the R.V. Professor Siedlecki using a Polish B-454 otter trawl ... rossii and Patagonotothen brevicauda guntheri were an order of magnitude lower than observe by Kock in ... than 1984/85, although not by an order of magnitude. Abundances of Notothenia gibberifrons and ... Chaenocephalus aceratus as estimated by this study and Kock were roughly equal. Abundance estimates of ... estimate of C. gunnari biomass is three to four times that found by the 1985 Federal Republic of Germany ... December 1986 by the R.V. Professor Siedlecki using a Polish B-454 otter trawl. Biomass was estimated ... Patagonotothen brevicauda ~entheri were an order of magnitude lower than observe by Kock in 1985. Abundance of ... not by an order of magnitude. Abundances of Notothenia gibberifrons and Chaenocephalus aceratus as ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 143-183 : Auteur(s): Gabriel, W.L.

6. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

   method successfully caught D. eleginoides, there was a large by-catch of crab species. The catch rate of ... eliminated bird by-catch. To capitalise on this feature, there is a need to improve the commercial viability ... of the method and minimise the quantity of by-catch. A number of potential changes are suggested to ... and Coastal Management PO Box X2, Roggebaai 8012 Cape Town, South Africa Abstract During the ... , there was a large by-catch of crab species. The catch rate of toothfish was notably lower than that ... achieved in the longline fishery. Importantly, the use of pots eliminated bird by- catch. To capitalise on ... ~~ant i ty of by-catch. A number of potential changes are suggested to this end. Resume De mars a ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Auteur(s): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves

7. Quantifying movement behaviour of vessels in the Antarctic krill fishery

   / Description:  Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... operations by Japanese fishing vessels. There were differences between statistical areas with longer ... fishery to assist in interpreting the annual fishing patterns, which can best be collected by scientific ... -scale haul-by-haul krill data were used to characterise the behaviour of the krill fishery. Analysis of ... decreased as the catch level increased; this pattern was most obvious for operations by Japanese fishing ... interpreting the annual fishing patterns, which can best be collected by scientific observers. Résumé Dix ... been managed by CCAMLR since the 1980s (Everson, 2000). Although precau- tionary catch limits for the ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Auteur(s): Kawaguchi, S. and S.G. Candy

8. A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels

   degraded by interference noise due to the lack of synchronisation of the acoustic instruments found on some ... the method was demonstrated by applying it to the acoustic data at 38, 70 and 120 kHz collected from a ... and thick- ness of krill swarms, were obtained by applying the ‘school detection’ module ... by fishing vessels. For example, the Chinese krill fishing vessel Fu Rong Hai was found to have two ... utility of the data may be seriously degraded by interference noise due to the lack of synchronisation of ... post-processing software. The utility of the method was demonstrated by applying it to the acoustic ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Auteur(s): Wang, X., J. Zhang and X. Zhao

9. Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses

   isotope ratios were determined and compared with those of species caught as by-catch and collected from ... Channichthyidae caught as by-catch and several species collected from toothfish stomachs, including unidentified ... and a regional comparison of their dietary composition by the collection and subsequent biomarker ... isotope ratios were determined and compared with those of species caught as by-catch and collected from ... other Antarctic fish as revealed by chemical tracers, and thus large decreases or increases in its ... toothfish can weaken lower trophic levels by removals of fish such as grenadiers and skates as by-catch ... its diet (DeNiro and Epstein, 1978; Fry and Sherr, 1984), whereas δ15N is enriched by 2–4‰ with each ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Auteur(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*

10. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

    fishing operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3 ... areas with lower catch rates, indications are that depredation by sperm whales can lead to a decrease in ... catches. Some mitigation measures have been tried by vessels to reduce interactions with cetaceans ... . Watkins Marine and Coastal Management PO Box X2, Roggebaai 8012 Cape Town, South Africa Abstract Killer ... operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3). Demersal ... (toothfi sh). However, in areas with lower catch rates, indications are that depredation by sperm whales ... can lead to a decrease in catches. Some mitigation measures have been tried by vessels to reduce ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Auteur(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

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