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The diet of Antarctic fur seals, Arctocephalus gazella, at King George Island, during the summer–autumn period
, krill and fish were the most frequent prey, occurring in an average of 97% and 69% of samples (n=128 ... ), followed by Cephalopods (12%). Myctophids constituted almost 90% of the fish predated, being Electrona ...
Meeting Document : WG-EMM-04/4 : Автор(ы): G.A. Daneri, A.R. Carlini, C.M. Hernandez and A. Harrington (Argentina)
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MaxEnt reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia 1996–2000
approximately 0.5 km intervals along transect for each of the ten 80 km transects in each box, providing about ... of mean krill density within two survey boxes of dimensions 80 km x 100 km to the north east and ... probable krill density for each of the 32000 0.5 km x 0.5 km cells in each survey box, taking explicit ... densities for which the confidence limits are often narrower than for estimates based upon more conventional ...
Meeting Document : WG-EMM-02/36 : Автор(ы): M.H. Wafy, A.S. Brierley, S.F. Gull and J.L. Watkins (United Kingdom)
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Updated assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet Islands (Subarea 58.6)
recent ones (Sinègre & Duhamel, 2016) with an updating of input data from the more recent years (up ... Abstract: This paper presents the latest developments in models for Crozet following the more ... : Approved Secretariat Workflow Status: Content Approved Delegation responsibility for releasing documents ...
Meeting Document : WG-FSA-17/59 : Автор(ы): R. Sinegre, G. Duhamel and J.B. Lecomte
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Acoustic survey design to estimate krill biomass in Subareas 48.1, 48.2 and 48.3
synoptic survey of krill biomass in Statistical Area 48. Example calculations are presented for estimating ... 1.25 ship-months of survey effort can provide an estimate of krill biomass in Subareas 48.1, 48. 2 and ... 48.3 with a CV of 20%. Author(s): Hewitt, R.P., Watters, G. Title: Acoustic survey design to estimate ...
Meeting Document : WG-EMM-95/71 : Автор(ы): Hewitt, R.P., Watters, G.
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THE RESEARCH PROJECT TO DIGITIZE HISTORICAL SOVIET KRILL FISHING EXPEDITION DATA
expeditions in Southern Ocean between the years of 1972-1992. The main purpose of these expeditions was to ... collect data and samples and to create an estimation of the commercial exploitation of the Antarctic krill ... stock. The data is currently recorded in the paper forms as expedition logbooks and represent an ... exclusive set of observations for investigation of the environment and the impact of climate change on krill ...
Meeting Document : WG-EMM-09/30 : Автор(ы): L. Pshenichnov and G. Milinevsky (Ukraine)
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On the intensity of sampling krill trawl catches
Abstract: This paper uses actual krill length frequency data in an attempt to address the problem ... (e.g. length-with-age). At present, and in the interests of both statistical rigour and the efficiency ... differences in length should be considered along with the need to collect maturity stage information. * For ...
Meeting Document : WG-KRILL-90/27 : Автор(ы): D.G.M. Miller (South Africa)
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Trophic niche of the Antarctic toothfish caught in SSRU 88.3 as inferred from fatty acids and stable isotopes
–2018, making comparisons with previous dataset obtained from the Ross Sea shelf (RSS) and the Indian ... of regional toothfish stocks, demonstrating an ontogenetic movement into deeper water from shelf ... descriptors for most trophic markers in toothfish, emphasizing both ontogenetic and geographical variability ... both trophic markers. Author(s): C.-K. Kang, S.-G. Choi, H.Y. Kang, Y.-J. Lee, S. Chung and D.H. An ...
Meeting Document : WG-FSA-18/21 : Автор(ы): C.-K. Kang, S.-G. Choi, H.Y. Kang, Y.-J. Lee, S. Chung and D.H. An
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NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL
Abstract: We validate the acoustic target classification protocols developed for the Stochastic ... that were collected during two cruises to the South Georgia region in 1996. For each krill aggregation ... identification algorithms for krill: (i) ‘3 freq model’- using the SDWBA to set the acceptance windows for both ... Sv120-38 and Sv200-120, (ii) ‘2 freq model’- using the SDWBA to set the acceptance window for just Sv120 ...
Meeting Document : WG-EMM-08/54 : Автор(ы): J. Watkins and S. Fielding (United Kingdom)
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On the use of baited remote underwater video to study Antarctic toothfish distribution under the sea-ice: from data collection to processing
of predictive variables, including an approach to account for bias in counting the number of ... and Italy, from 2015 to 2018 a series of BRUV samplings have been carried out from the fast ice of ... refined, our hope is that it could provide a mechanism for other Members to extend the area of data ... : Content Approved Document Release Consent: No Delegation responsibility for releasing documents: Italy ...
Meeting Document : WG-EMM-2019/50 : Автор(ы): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi
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ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA
hierarchical Bayesian model. The model was composed of multistage cluster units (i.e., years, subarea, vessels ... length and bycatch fish number, the parameters estimated by MCMC showed the variation among years ... formula with the variance terms derived from the Bayesian model. For both krill length and bycatch fish ... CV. The results of this study suggest that scientific data collectionby commercial fishery is an ...
Meeting Document : WG-EMM-11/39 : Автор(ы): T. Okuda and M. Kiyota (Japan)
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