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1. Conditions for the precise measurement of fish target strength in situ

   Abstract:  Conditions for precise measurement of in situ fish target strength (TS) are empirically ... studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... reverberation volume which contributes echo formation at a certain instant and the other is the percentage of ... the multiple echoes which is derived from a residual of the single echo extraction. With the decrease ...

   Meeting Document : WG-Krill-94/35 : Автор(ы): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)

2. Status of krill target strength

   Abstract:  Empirical estimates for the target strength of krill are extracted from the literature ... . These are confined to measurements on aggregations of live euphausiids, which should avoid a frequent ... cause of bias in single-animal measurements, namely thresholding. Theoretical estimates for the target ... strength are derived from the deformed-cylinder scattering model assuming specific sets of physical and ...

   Meeting Document : WG-KRILL-92/11 : Автор(ы): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)

3. Pup production and distribution of breeding Antarctic fur seals (Arctocephalus gazella) at South Georgia

   Abstract:  A census of the breeding population of Antarctic fur seals (Arctocephalus gazella) at ... South Georgia was carried out during the 1990/91 breeding season. Using counts of adult females ashore ... at the breeding grounds during the pupping period, together with corrections for the likelihood of a ... long-term study sites probably because of a short term reduction in food availability. Data from these ...

   Meeting Document : WG-CEMP-92/39 : Автор(ы): I.L. Boyd (United Kingdom)

4. Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic peninsula region

   Peninsula from 26 December 1989 to 14 January 1990. Results were compared with data of an identical survey ... exceeded a factor of 35 times, while interannual variability between available surveys reached only a ... factor of 1.6 times. Krill mortality was calculated by linearized catch curve analysis and resulted a ... rate of Z=0.88 (1989/90) and Z=0.96 (1987/88). Production was estimated and resulted a P/B ratio of ...

   Meeting Document : WG-KRILL-91/15 : Автор(ы): Delegation of Germany

5. Analysis of observer coverage for Japanese krill fishing vessels

   Abstract:  Sources of variability of krill mean length and fish bycatch number was investigated to ... explore proper allocation of scientific observers on Japanese krill fishing vessels using the data from ... 1995 to 2008. Based on the multistage sampling theory, we derived the equation of variance in four ... coefficients of variation (CV) caused by the shifts in coverage at different sampling stages. Vessel coverage ...

   Meeting Document : WG-SAM-10/17 : Автор(ы): T. Okuda, M. Kiyota and H. Okamura (Japan)

6. Two decades of variability in krill predators at Bird Island, South Georgia and their potential as ecosystem indicators

   Abstract:  The breeding performance of seabirds and seals at Bird Island, South Georgia, in the ... Southern Ocean, has been recorded annually for over two decades as part of a large marine ecosystem ... monitoring programme. We examined the mechanistic relationships between, and patterns of inter-annual ... included foraging performance, offspring survival, offspring mass, the contribution of Antarctic krill ...

   Meeting Document : WG-EMM-12/16 : Автор(ы): S.L. Hill, C.M. Waluda, H.J. Peat and S. Fielding (United Kingdom)

7. Potential climate change effects on the habitat of Antarctic krill

   summer foraging sites of many of these predators are concentrated between 0° and 90°W. Parts of this ... sector have experienced recent localised sea surface warming of up to 0.2°C     per decade, and ... projections suggest that further widespread warming of 0.27° to 1.08°C will occur by the late 21st century. We ... assess the influence of projected warming on Antarctic krill habitat quality. The results divide the ...

   Meeting Document : WG-EMM-13/20 : Автор(ы): S.L. Hill, T. Phillips and A. Atkinson (United Kingdom)

8. A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2013 random stratified trawl survey

   vicinity of Heard Island during April 2013. This paper provides a preliminary assessment of mackerel ... icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79° 20’ E ... using standard CCAMLR methods. A large cohort of fish, estimated to be 3+, dominates the population in ... both abundance and biomass. Two scenarios for harvest are presented – a typical two year projection of ...

   Meeting Document : WG-FSA-13/23 : Автор(ы): D.C. Welsford (Australia)

9. An updated spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   population was restricted to those cells in which at least 5% of cell area was of a depth deemed suitable as ... that a proportion of the mature fish spawn each year. The model estimation of the maturity ogive is now ... similar to that estimated by histological analysis. This model represents our current best model of the ... spatial distribution and movement of Antarctic toothfish in the Ross Sea region given the movement ...

   Meeting Document : WG-SAM-14/31 : Автор(ы): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

10. Committee for Environmental Protection: 2015 Annual Report to the Scientific Committee of CCAMLR

    Abstract:  Cooperation between the Scientific Committee of CCAMLR (SC-CAMLR) and the Committee for ... Environmental Protection (CEP) has been steadily increasing over the last few years to the mutual benefit of ... between the Chairs of the CEP and SC-CAMLR,  the report of the CEP meeting is presented to SC-CAMLR by the ... CEP Observer to SC-CAMLR and the report of the meeting of  SC-CAMLR  is presented to the CEP by the SC ...

    Meeting Document : SC-CAMLR-XXXIV/BG/14 : Автор(ы): CEP Observer to SC-CAMLR (Dr P. Penhale, USA)

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