Résultats de la recherche
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Sex determination of Antarctic petrels Thalassoica antarctica by discriminant analysis of morphometric characters
recommended that morphometric measurements obtained by others on sexed birds are compared with ours before ... proceeding with the use of the discriminant function on unsexed individuals. Author(s): S.-H. Lorentsen and ...
Meeting Document : WG-CEMP-94/41 : Auteur(s): S.-H. Lorentsen and N. Røv (Norway)
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Analysis of anomalous CPUE data from data-poor exploratory fisheries
these ships showed distinct differences to the other ships that have participated in longline toothfish ... fisheries in Divisions 58.4.1, 58.4.2 and subarea 48.6. These differences are reflected in CPUEs with large ... temporally aggregated sets with the largest catches reported across the fleet. Author(s): Secretariat and ...
Meeting Document : WG-FSA-12/07 : Auteur(s): Secretariat and Delegation of the Republic of Korea
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Supervised and unsupervised (RapidKrill) estimates of krill density from DY098
data processing procedures are applied in both methods, and we show that the unsupervised method comes ... up with a similar estimate of krill NASC and krill density as the supervised method. An ... produces a krill density of 8.60 gm-2, compared with 21.76 gm-2 (supervised) or 20.41 gm-2 (unsupervised ...
Meeting Document : SG-ASAM-2019/09 : Auteur(s): A. Ariza, S. Fielding and R. Blackwell
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Review of the CEMP standard methods and their delivery to the CEMP database
Abstract: This paper reports on the discussions that occurred among individuals tasked by the WG ... broad themes with some historical background to the development of those themes provided as context ... . Issues relating to each theme that were discussed by the group are summarised, and recommendations for ...
Meeting Document : WG-EMM-04/70 : Auteur(s): C. Southwell, J. Clarke (Australia), K. Reid (United Kingdom), G. Watters (USA) and D. Ramm (CCAMLR Secretariat)
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Revision of the fishery–foraging overlap model
on Ecosystem Monitoring and Management and its Subgroup on Statistics in 1997. The review found that ... the index calculated in that model did not directly measure overlap between penguin foraging demands ... Secretariat was tasked with the revision of the model, including modifications to the model in terms of both ...
Meeting Document : WG-EMM-98/05 : Auteur(s): Secretariat
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Evaluation of populations of chinstrap and gentoo penguins at Cierva Cove (ASPA N° 132). Is this site an appropriate control area for non-fishing effects?
48 that is, relatively speaking, lightly fished, we suggest that the Cierva Cove colonies provide an ... opportunity to explore how monitoring data can provide useful contrasts to other monitoring sites with more ...
Meeting Document : WG-EMM-13/27 : Auteur(s): M.M. Santos, N.R. Coria, E. Barrera-Oro (Argentina) and J.T. Hinke (USA)
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ICED workshop and conference session on Southern Ocean foodwebs and scenarios of change
encourage scientists that contribute to CCAMLR to participate in these activities with a view to improving ... workshop is “Southern Ocean food webs and scenarios of change”, and that of the June 2014 conference ...
Meeting Document : WG-EMM-13/13 : Auteur(s): R.D. Cavanagh on behalf of the international ICED Scientific Steering Committee
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The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach
sank whereas frozen bait floated. Fish with inflated swim bladders floated, however, even when thawed ... (to avoid fish species with swim bladders which cause the bait to float), the proper thawing of bait ... decrease with increased bait sink rates, particularly if the baits can be made to sink to a depth greater ... , which is an approximation of the amount of time after deployment from a longliner that a bait would be ... means that the fastest sinking baits would still only be at a depth of 1 m when 31 m astern, 2 m at 62 ... sec. m-' by the addition of a 10 g weight, and this rate could be increased by 30 to 40% with the ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Auteur(s): Brothers, N., A. Foster and G. Robertson
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Assessment of krill flux factors in waters of South Orkney Islands during summer 1996
study area perimeter. Mean krill transport rate was 7.2 tonnes/hour/n mile with a standard deviation of ... experiment, a preliminary estimate of krill outflow from the study area into adjacent areas would be ... % = 831.0 tonnes / hour. It is well known that krill flux can be caused not only by geostrophic factors ... ) variability of krill flux should be studied with as many observations being made as possible. These ... tonnes/hour/n mile with a standard deviation of 15.5 tonnes/hour/n mile. Significant variability of ... study area into adjacent areas would be approximately 9.2 million tonnes. Resume Les auteurs donnent ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 195–204 : Auteur(s): Kasatkina, S.M., V.N. Shnar, M.I. Polischuk, A.M. Abramov and V.A. Sushin
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Acoustic estimates of krill density at South Georgia, 1981 to 1998
from year to year over that time, ranging from ≈ 2 to ≈ 150 g m-2 (fresh mass). The 1982, 1991 and ... cruises (Figure 1). From this it can be seen that before 1996, data were available from areas broadly ... be conducted in hours of daylight. With the exception of the 1982 value, all biomass estimates ... conclude that variability there is associated with 'high interannual fluctuations in stock size and not ... (Watkins et al., 1999), also suggest that oceanographic and krill population processes may not be the ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Auteur(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson