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An evaluation of reduced target strength estimates reported for krill (Euphausia superba)
) density dependent effects; and 3) compounding of diel effects. The possible bias in the calculations of ... target strength due to these weaknesses indicate an estimated 3-5 dB error due to unaccounted for ... directivity effects as a result of items under category 1; an estimated 2-3 dB bias due to systematic errors ... under category 2; and an estimated 3-4 db error due to category 3. Thus there is reason to believe that ...
Meeting Document : WG-KRILL-90/13 : Автор(ы): M.C. Macaulay (USA)
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Estimation of the incidental capture of seabird species in commercial fisheries in New Zealand waters, 2000/01
ling autoline sets caught seabirds, compared with 6% of observed chartered tuna longline sets caught ... varied from 0.218 seabirds per 1000 hooks (s.e. = 0.033) in LIN 6 to 0.004 (s.e. = 0.004) in LIN 2; for ... estimates are provided for the main fisheries: 16 seabirds (c.v. = 6%) were caught during chartered tuna ...
Meeting Document : WG-FSA-04/55 : Автор(ы): S.J. Baird (New Zealand)
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CCAMLR ecosystem monitoring program standard methods: determination of sex of Adelie penguins
when more than 90% of the incubating birds were male and a 6- or 7-day period when more than 90% of the ... identified with 91∙8–98∙6% accuracy within 15–21 days after the first sighting of an egg. The method provides ...
Meeting Document : WG-CEMP-94/08 : Автор(ы): K.R. Kerry, J.R. Clarke and G.D. Else (Australia)
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Demersal longlines with integrated weight: a preliminary assessment of sink rates, fish catch success and operational effects
attached weights (6 kg/49 m) in the New Zealand ling fishery. Longlines with 0 g/m (unweighted), 25 g/m, 50 ... sank instantly, reaching 1 m depth in 6-9 s whereas unweighted lines took >20 s to reach this depth ...
Meeting Document : WG-FSA-02/22 : Автор(ы): G. Robertson (Australia), M. McNeill, B. King (New Zealand) and R. Kristensen (Norway)
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Krill distribution and biomass variability within Subarea 48.3 in June 1991
in an 8 x 6 mile micropolygon, where eight consecutive hydroacoustic surveys were carried out. Krill ... 1 554 units. Krill biomass in the polygon varied spasmodically within the range from 1 091 to 6 085 ...
Meeting Document : WG-KRILL-93/35 : Автор(ы): S.M. Kasatkina, E.N. Tymokhin, P.P. Fedulov and K.E. Shulgovskiy (Russia)
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A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.
selecting among Fishing Options 2, 3, and 4 are tradeoffs between the risks to predator populations and ... of Fishing Option 3 will also require substantive fishery operations in pelagic SSMUs, but, if krill ... (i.e., 0.15 x γ), implementation of Fishing Option 3 is unlikely to reduce predator populations to 75 ... Fishing Option 3 than for Fishing Option 2 because the former option requires slightly more fishing in ...
Meeting Document : WG-EMM-08/30 : Автор(ы): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)
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Analysis of sea-ice concentration of 48.6_4 and _5 with remote sensing data during the latest four seasons
byUniversity Bremen. Figure 1 shows the overall of the topography and ice condition with Shinsei maru No. 3 ... completed almost all the catch limit allocated. Figure 3 focused the sea-ice dynamics in and around block ... block except for the southern part near the continent in February 1st (Figure 3). Shinsei maru No. 3 had ... the lowest level in March in 2016 (red line in the lower figure). As Figures 3 and 4, the sea-ice ...
Meeting Document : WG-SAM-16/42 Rev. 1 : Автор(ы): T. Namba, K. Taki and T. Ichii
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Light levels experienced by foraging Antarctic fur seals, Arctocephalus gazella
and 49.5 ± 6.9 s, respectively. Depending on time of day, fur seals experienced between 6 and 57 % of ... to minimum starlight (10-6 lux) at night and during deep daytime dives. The change in il1uminance ...
Meeting Document : WG-EMM-99/28 : Автор(ы): D.J. McCafferty, I.L. Boyd and T.R. Walker (UnitedKingdom)
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Marine debris surveys at Bird Island, South Georgia 1990 to 1995
longline fishery for Patagonian toothfish Dissostichus eleginoides around South Georgia. Packaging bands (6 ... %) and polythene bags (6 %) were the next commonest items. There was a substantial increase in the number ...
Meeting Document : CCAMLR-XV/BG/05 : Автор(ы): Delegation of the United Kingdom
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Atlas of coastal sea ice in eastern Antarctica
1995/6 and 1997/98. Season 1995/6 was one of low breeding success and when the sea ice remained at the ...
Meeting Document : WG-EMM-02/54 : Автор(ы): K. Michael, K. Hill, K. Kerry and H. Brolsma (Australia)
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