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1. Selecting sampling frequency for measuring diving behaviour

   % increase in mean maximum dive depth, a 29% increase in mean dive duration and a 12% increase in duration ... in interval from 5s to 15s resulted in 20% of dives being unrecognised, a 38% increase in mean maximum dive ... depth, a 29% increase in mean dive duration and a 12% increase in duration of surface interval ...

   Meeting Document : WG-CEMP-93/14 : Author(s): I.L. Boyd (United Kingdom)

2. Report on a tuna long-lining fishing voyage aboard Southern Venture to observe seabird by-catch problems

   birds survived hooking in this study because of the lighter gear and quicker recovery of the long-line ... % of bait-takes resulted in a bird being hooked. The mollymawk was hooked at night near full moon, but ... intensively on the waste baits (41% of those cast) thrown overboard during hauling-in. More birds followed in ... Abstract:  Incidental captures of seabirds, and the behaviour of seabirds around the fishing gear ...

   Meeting Document : WG-IMALF-94/10 : Author(s): M.J. Imber (New Zealand)

3. Using stationary acoustic platforms to assess precision and accuracy of acoustical krill surveys

   the South Orkney Islands since 2014, and in this report some of these data have been analysed in order ... Abstract:  The current CCAMLR protocol specifies daytime acoustic sampling in order to avoid ... issues of krill migrating too close to the surface to be acoustically detected, as well as potential ... issues of diel changes in acoustic scattering strengths. However, due to logistic constraints, acoustic ...

   Meeting Document : WG-EMM-2019/32 : Author(s): T. Klevjer, G. Skaret and B.A. Krafft

4. Acoustic discrimination of southern ocean zooplankton

   between mean volume backscattering strength at 38, 120 and 200 kHz separated echoes originating from each ... between mean volume backscattering strength at 38, 120 and 200 kHz separated echoes originating from each ...

   Meeting Document : WG-EMM-97/54 : Author(s): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.

5. Results of trials undertaken around Crozet Island using pots to target Patagonian toothfish

   comparison are not straightforward due to the large number of pot model tested and the large differences in ... Abstract:  Patagonian toothfish (Dissostichus eleginoides) is the target species of a bottom ... longline fishery occurring in the Southern Indian Ocean off Kerguelen and Crozet islands. This fishery is ... exposed to high levels of interactions with cetaceans removing fish from the fishing gear and to ...

   Meeting Document : WG-FSA-10/10 : Author(s): N. Gasco, P. Tixier and C. Guinet (France)

6. Comparison of equal-area cylindrical and circular piston transducers

   Abstract:  Design of sondes for in situ measurement of zooplankton or other scatterers requires ... choosing among alternative transducer geometries. This contribution addresses the problem of choosing ... between cylindrical and circular piston transducers by comparing the performance of the two according to ... dimensions of six fabricated cylindrical transducers, whose beam patterns have been measured by the ...

   Meeting Document : WG-EMM-95/08 : Author(s): Foote, K.G.

7. Towards a strategic framework for assessing uncertainty in ecosystem dynamics models: objectives are sensitive too

   advice each required values for 2,311 distinct inputs. In the absence of guidance about management ... reference points, the modellers provided advice in terms of 41 illustrative reference points intended to ... candidate feedback management approaches for the Antarctic krill fishery in the southern Drake Passage and ... simulations of krill, its predators and fishery. It has been used to provide advice on the spatial allocation ...

   Meeting Document : WG-EMM-12/20 Rev. 1 : Author(s): S. Hill and J. Matthews (United Kingdom)

8. A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments

   significantly influence the LFD helps in evaluating how to account for important differences in availability and ... /or gear specific selectivity. A distribution-free model of LFD is described which is fitted to the ... set of length quantiles L for a predetermined set of corresponding probabilities P (in this instance ... 0.05, 0.1 to 0.9 in 0.1 increments, and 0.95), constructed from individual length measurements of ...

   Meeting Document : WG-SAM-13/18 : Author(s): S. Candy, P. Ziegler and D. Welsford (Australia)

9. Application of continuous time Markov chains to modelling animal movement: estimation of movement rates and retention times for Patagonian toothfish

   Abstract:  The study of animal movement and distribution has been a central focus in ecology since ... apply the model to estimate the equilibrium distribution of Patagonian toothfish in the region around ... the inception of the science. However, continuous-time, discrete state models have received relatively ... Heard and MacDonald Islands in the Australian Antarctic zone using to mark-recapture data from the ...

   Meeting Document : WG-FSA-SAM-06/16 : Author(s): C. Wilcox, M. Bravington and D. Peel (Australia)

10. BEACH DEBRIS SURVEY AND INCIDENCE OF ENTANGLEMENT OF ANTARCTIC FUR SEALS ARCTOCEPHALUS GAZELLA AT SIGNY ISLAND, SOUTH ORKNEY ISLANDS 2007/2008

    ). There was a decrease in the number of plastic packaging bands with only two found in the current season ... (both of which had been cut open), marking a break in the otherwise continued rise in packaging bands ... the longevity of plastics and other materials with a high resistance to degradation in the marine ... Abstract:  This report details the twelfth annual survey of the incidence of entanglements of ...

    Meeting Document : WG-FSA-08/26 : Author(s): M.J. Dunn and C.M. Waluda (UK)

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