Search results
-
Investigations on tagging data in the Kerguelen Islands Patagonian toothfish fishery (division 58.5.1)
Abstract: In 2014, FSA-14-36r1 presented a new assessment of Patagonian toothfish in the French ... EEZ. A singularity in the tagging fits was observed by the working group. A lower number of recaptures ...
Meeting Document : WG-SAM-15/43 : Author(s): R. Sinegre and G. Duhamel (France)
-
Further progress on modelling the krill–predator dynamics of the Antarctic ecosystem
to act as a surrogate for these in addition to the seals themselves. This results in an improved fit ... of the model to available abundance estimates for crabeater seals. A list of topics for possible ... estimates for the various krill predators is seen as a priority for improving the reliability of current ... models, and it is suggested that this should be a key focus of the proposed joint IWC-CCAMLR workshop on ...
Meeting Document : WG-EMM-06/19 : Author(s): M. Mori (Japan) and D.S. Butterworth (South Africa)
-
An examination of latitudinal variation in the growth rates of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: Following a finding that a small sample of aged Dissostichus mawsoni from McMurdo Sound ... conducted. Length-at-age of Dissostichus mawsoni was compared across five zones in a 15.5° latitudinal range ... were insufficient older fish in the southernmost zone to enable a comparison with other areas. Any real ...
Meeting Document : WG-FSA-03/30 : Author(s): P.L. Horn (New Zealand)
-
Progress on the application of an age-structured production model fitted to commercial catch-rate and catch-at-length data to assess the toothfish (Dissostichus eleginoides) resource in the Prince Edward Island vicinity
allow the estimation of a selectivity-at-age function that decreases at larger ages. This is, in ... . In the meantime, based upon a cautious interpretation of projections over the wide range of current ... exceed a few hundred tonnes. Author(s): A. Brandão and D.S. Butterworth (South Africa) Title: Progress ...
Meeting Document : WG-FSA-03/97 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
-
ADULT ANTARCTIC KRILL FEEDING AT ABYSSAL DEPTHS
Abstract: Antarctic krill (Euphausia superba) is a large euphausiid, widely distributed within ... the Southern Ocean, and a key species in the Antarctic food web. The Discovery Investigations in the ... depth distribution and ecology of Antarctic krill, a central organism in the Southern Ocean ecosystem ... . Author(s): A. Clarke and P.A. Tyler Title: ADULT ANTARCTIC KRILL FEEDING AT ABYSSAL DEPTHS Approval ...
Meeting Document : WG-EMM-08/P01 : Author(s): A. Clarke and P.A. Tyler
-
Echo integration in low signal to noise regimes: methods of noise estimation and removal
kHz with a Simrad EK500 are presented to demonstrate the highly variable nature of background noise. A ... than several methods that apply a single background noise level to a data set. The dynamic technique ...
Meeting Document : WG-EMM-97/74 : Author(s): Higginbottom, I., Pauly, T.
-
Biological acoustic survey in the marginal ice edge zone of the Bellingshausen Sea
) Southern Ocean investigations (TuRNER and OWENS, 1995). A total of 285 targets were identified and ... density varied from a mean of 42 g m-2 during the first survey phase to 19.6 g m-2 on the second survey ... phase. On this first survey a large swarm (2.8 km in extent) had a potential biomass of 3.7 x 104 tonnes ...
Meeting Document : WG-Krill-94/32 : Author(s): A.W.A. Murray, J.L. Watkins and D.G. Bone (United Kingdom)
-
Potential VMEs around Elephant and the South Shetland Islands (Subarea 48.1)
and are thus not adequately protected unless direct photographic evidence is available. To this end a ... types of communities where sponges and other heavy taxa occur. A clear example can be made of CITES ... Appendix II listed Antipatharia (black coral), which in the authors’ experience has never occurred at a ... the new diversity threshold, a total of 10 VME areas are proposed, half of which encompass multiple ...
Meeting Document : WG-EMM-12/51 : Author(s): S.J. Lockhart (USA), N. Wilson (Australia) and E. Lazo-Wasem (USA)
-
Progress report for the third year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2013–2015.
Abstract: A multi-year research plan as outlined in CM 41-04 (2012, 2013 & 2014) was ... first 2.5 years is reported. Between December 2012 and April 2015 a total of 291 Dissostichus ... eleganoides and 3273 D. mawsoni were tagged and released, and a total of 10 and 49 tagged D. eleganoides and D ... collected from 25 052 toothfish and length data from a total of 15 157 individuals from 18 different species ...
Meeting Document : WG-SAM-15/50 : Author(s): R.W. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)
-
Antarctic krill; assessment of mesh size selectivity and escape mortality from trawls
Abstract: This working paper presents the aims and methodology for a three-year-project ... project is widely based on acquired experiences from a completed study Net Escapement of Antarctic krill ... BioMarine AS. The project will examine krill escape mortality from the codend during a full scale field ... (Denmark), B. Herrmann, A. Engås, I. Bruheim and S. Nordrum (Norway) Title: Antarctic krill; assessment of ...
Meeting Document : WG-EMM-15/14 : Author(s): B.A. Krafft (Norway), L.A. Krag (Denmark), B. Herrmann, A. Engås, I. Bruheim and S. Nordrum (Norway)