Search results
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Identification of squid echoes in the south Atlantic
Abstract: During a research cruise of the British Antarctic Survey ship RRS James Clark Ross in ... February 1996, a substantial number of the ommastrephid squid, Martialia hyadesi, were caught in a pelagic ... gathered during this haul and a survey of the immediate vicinity, in order to characterise an acoustic ... signature that may be used to identify this species of squid. Author(s): Rodhouse, P., Goss, C., Brierley ...
Meeting Document : WG-EMM-97/26 : Author(s): Rodhouse, P., Goss, C., Brierley, A., Watkins, J.
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A new method for the measurement of Antarctic krill Euphausia superba Dana from predator food samples
Abstract: Regression functions of total length on carapace length and total length on removed ... carapace length were calculated for Antarctic krill Euphausia superba Dana for those classes of sex and ... maturity stage which can be discriminated in predator food samples. The use of removed carapace length as a ... predictor of total length is highly recommended for animals where total length measurement would be ...
Meeting Document : WG-CEMP-90/40 : Author(s): H.J. Hill (United Kingdom)
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Comments on the development of a Dissostichus mawsoni Population Hypothesis for Area 48. Proposals on the WS-SM-18 advice to the to the Scientific Committee and its Working Group
Abstract: Taking into account the results of the WS-DmPH workshop (Berlin, 2018), proposals are ... being considered to obtain actual adequate data for the development of a hypothesis on the Dissostichus ... mawsoni life history and to facilitate the assessment of its stock in Area 48. Author(s): Delegation of ... the Russian Federation Title: Comments on the development of a Dissostichus mawsoni Population ...
Meeting Document : WS-SM-18/09 : Author(s): Delegation of the Russian Federation
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Abundance and trends of Type B killer whales (Orcinus orca) around the western Antarctic Peninsula
impact of these physical changes on the marine ecosystem. The WAP is surrounded by a complex marine food ... web involving a number of predator and prey populations, and empirical data on abundance and trends is ... ecotypes (Types B1, B2 and A). Here we report on the movement patterns and abundance of both forms of Type ... , B2 = 13,621 photographs) to estimate abundance in the coastal waters of the WAP during austral ...
Meeting Document : WG-EMM-18/16 : Author(s): H. Fearnbach, J.W. Durban, D.K. Ellifrit and R.L. Pitman
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Estimating penguin populations using image analysis of colour aerial photography
Abstract: Penguin populations are potentially sensitive indicators of change in the Antarctic and ... colonies, for colonies in areas of complex terrain, or for colonies where ground access is difficult ... of a computer based image analysis of digitally scanned colour aerial photographs of macaroni penguin ... : Estimating penguin populations using image analysis of colour aerial photography Approval: Approved ...
Meeting Document : WG-EMM-02/34 Text : Author(s): P.N. Trathan (United Kingdom)
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Preliminary analysis of seabird by-catch in the South Georgia icefish fishery
Abstract: We conducted a preliminary analysis on the numbers of birds caught as a bycatch in the ... 92 birds were caught, principally black-browed albatross and white-chinned petrel, with 93% of the ... factors affecting the probability of a haul catching birds, but no significant factors were found that ... could explain the number of birds caught. Differences in the numbers caught in the last three years also ...
Meeting Document : WG-FSA-01/30 : Author(s): D.J. Agnew, N. Ansell and J.P. Croxall (United Kingdom)
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Extending ecological monitoring to underpin the development of feedback management approaches for the Antarctic krill fishery
fishery. Such a management approach may also require the development of a new or extended monitoring ... of the issues associated with the development of a new monitoring programme, outlining one possible ... each. We propose that CCAMLR consider the merits of different approaches over the next two years, so ... that it can agree a way forward and make best use of the recently established CEMP Fund. Author(s ...
Meeting Document : WG-EMM-12/04 : Author(s): P.N. Trathan (UK), H.J. Lynch (USA), C. Southwell (Australia), P.T. Fretwell (UK), G. Watters (USA) and N. Ratcliffe (UK)
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Developing a strategy for coordinated research leading to achievement of the CCAMLR objectives for Antarctic toothfish (D. mawsoni) in Area 48
the objectives of the Commission, across the whole of Area 48. Co-ordinated by WG-SAM and/or FSA, a ... high level strategic approach will allow the formulation of research hypotheses and associated ... and results can be subsequently evaluated. A time schedule, in the form of a project plan with ... meeting its objectives for management of the Convention Area. Author(s): C. Darby and M. Söffker Title ...
Meeting Document : WG-FSA-17/54 : Author(s): C. Darby and M. Söffker
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Responding to the emerging threat of microplastics in the Southern Ocean
microplastics in several different regions of the Antarctic. Microplastics could have negative effects on the ... of laundry water. ASOC and COLTO further recommend that: All operating vessels and research stations ... consider ways to limit potential sources of microplastics and microfibers discharged through grey or ... the amount of microplastic fibers entering the ocean. CCAMLR Members and Observers, as well as SC ...
Meeting Document : SC-CAMLR-XXXVII/BG/18 : Author(s): Submitted by ASOC and COLTO
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Size selectivity of the RMT8 plankton net and a commercial trawl for Antarctic krill
Abstract: Net selection of the scientific RMT8 plankton net and a commercial sized pelagic trawl ... underrepresented in the RMT8. For the commercial trawl with a liner mesh size of 12mm the length classes smaller 35 ... and 45 mm are undersampled, probably depending on the size composition of the catch. A preliminary ... study on krill damaged during trawling operations indicates an effect of trawling duration and total ...
Meeting Document : WG-EMM-07/28 : Author(s): V. Siegel (Germany)