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1. Variability and predictability of Antarctic krill swarm structure

   Abstract:  Swarming is a fundamental part of the life of Euphausia superba, yet we still know very ... -concentration and inter-swarm distance of 4525 swarms was derived by this method. Hierarchical clustering ... ) whereas type 2 swarms were an order of magnitude larger and had packing concentrations up to 10 times ... greater. Further sub-divisions of these types identified small and standard swarms within the type 1 group ...

   Meeting Document : WG-EMM-10/P10 : Autor(es): G.A.Tarling, T. Klevjer, S. Fielding, J. Watkins, A. Atkinson, E. Murphy, R. Korb, M. Whitehouse and R. Leaper

2. Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground

   to the main trawl ground in which the longest time series of catches and the great majority of ... releases and recaptures of tagged fish were available. Catch and releases by age class for this fishery ... years 1998 to 2008. A large proportion of the recaptures of fish released in this fishery were aged and ... of the properties of these two models for estimation of M used simulation. In application to the data ...

   Meeting Document : WG-FSA-10/41 : Autor(es): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (Australia)

3. The use of electronic monitoring camera system for the toothfish fishery in CCAMLR Subarea 48.3: a study case to help CCAMLR

   Abstract:  Sampling methods to determine the composition and nature of the catch of the longlining ... CCAMLR observers deployed on the fishing fleet. The collection of this data is important for the ... assessment and management of the fishery. This independent estimation of the total catch in the fishery ... a reasonable figure/rate of line observation for each setting of the lines. A video recording system ...

   Meeting Document : WG-FSA-14/27 : Autor(es): R.A. Benedet (United Kingdom)

4. Comparing surface and planimetric area across multiple scales and assessing the impact of different data sources on seabed area estimation in research blocks in the CAMLR Convention Area

   Abstract:  Having accurate surface area estimates of toothfish (Dissostichus spp) habitats is ... important for CCAMLR in estimating the fishable biomass of these species in data-poor areas, developing ... scientific survey designs and models of habitat use.  Planimetric seabed areas (i.e. a two-dimensional ... surface) is rarely estimated. The aims of this paper are to examine differences in: (1) planimetric seabed ...

   Meeting Document : WG-SAM-15/01 : Autor(es): CCAMLR Secretariat

5. Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)

   of which are expected to increase. However, many of the length classes of krill can escape through ... commonly used commercial trawl mesh sizes. A vital component of the overall management of a fishery is to ... estimate the total fishing mortality and quantify the mortality rate of individuals that escape from ... mortality rates of escaped krill. Haul duration, hydrological conditions, maximum fishing depth and catch ...

   Meeting Document : WG-EMM-16/04 : Autor(es): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann

6. High-resolution ocean modelling of the South Georgia and South Orkney Islands regions

   South Orkney Islands is highly productive, with a history of commercial exploitation. Many of the key ... oceanographic and ecological processes that determine the structure and functioning of this ecosystem operate ... over small scales of <10 km. Historically, these fine spatial scales have been poorly represented in ... numerical models. Here we describe the development of two regional ocean models that will be used to examine ...

   Meeting Document : WG-EMM-16/15 : Autor(es): E. Young, E. Murphy and P. Trathan

7. Preliminary biomass estimation of Antarctic krill based on the swarm-based method for CCAMLR Division 58.4.1 in 2018/19 using data obtained by Japanese survey vessel Kaiyo-maru

   Abstract:  Biomass (B 0) of Antarctic krill for CCAMLR Division 58.4.1 in 2018/19 was ... different, (2) timing of the surveys were different (Kaiyo-maru survey commenced about 40 days earlier than ... BROKE) and (3) areal coverages were different primary because of difference of positions of sea ice edge ... especially in the western part of the Division. The CV of biomass estimate of Kaiyo-maru survey was high ...

   Meeting Document : SG-ASAM-2019/02 : Autor(es): K. Abe, R. Matsukura, N. Yamamoto, K. Amakasu and H. Murase

8. Biomass abundance and distribution of fish in the Kerguelen Islands’ zone (Division 58.5.1)

   (September-October 2006) off the Kerguelen Islands (division 58-5-1), the northern part of the Kerguelen ... Plateau. The sweep-area method was used in the range 100 and 1000 m with random stratified stations of ... bottom trawling. Estimations of biomass and abundance are provided for eight commercial species. The ... of the value (124 000 tonnes). The biomass is displayed between the shelf and the deep-sea. Such ...

   Meeting Document : WG-FSA-07/16 : Autor(es): G. Duhamel and M. Hautecoeur (France)

9. Analysis of krill fishery behaviour in the southwest Atlantic: potential signals for moving fishing activities amongst SSMUs

   seasons by analyzing CPUE (catch per hour) patterns towards the end of their sets of operations before ... leaving a SSMU, as well as its timing of the day, diurnal pattern of CPUE and fishing depth. Vessels tend ... than a day to explore the fishing grounds from multiple options for the start of the fishing season ... . Vessels move around less frequently in Subarea 48.2 during the summer season because of only one viable ...

   Meeting Document : WG-EMM-07/27 : Autor(es): S. Kawaguchi, A. Constable and S. Nicol (Australia)

10. Community structure of epipelagic macrozooplankton in the Ross Sea

    Abstract:  During the 9th research cruise of the R/V Kaiyo-maru, macrozooplankton samples were ... the Ross Sea and neighboring waters. Biomass and abundance (number of individuals) were 0 ~ 32.1 g ... located at 78°S, 175°E. Total of 13 taxa occurred at all stations and mean of 7.4 taxa were occurred in ... each sample. There was no marked difference in numbers of taxa occurred at each station and layer ...

    Meeting Document : WG-EMM-07/34 Rev. 1 : Autor(es): Y. Watanabe, S. Sawamoto, T. Ishimaru and M. Naganobu (Japan)

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