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1. An index of per capita recruitment

   Paper Title:  An index of per capita recruitment Abstract / Description:  An index of per capita ... recruitment (PCR) is proposed such that where R 1 is the proportion of age-l animals sampled in year y and M ... is the post-recruit mortality rate. The intent of the index is to facilitate investigation of ... reproductive success and the factors postulated to affect it. The formulation of PCR is based on the ... AN INDEX OF PER CAPITA RECRUITMENT R. Hewitt Southwest Fisheries Science Center PO Box 271, La ... Jolla, Ca. 92038, USA Abstract An index of per capita recruitment (PCR) is proposed such that ... where R1 is the proportion of age-l animals sampled in year y and M is the post-recruit mortality rate ... . The intent of the index is to facilitate investigation of reproductive success and the factors ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Автор(ы): Hewitt, R

2. Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3

   Paper Title:  Towards the development of a management plan for mackerel icefish (Champsocephalus ... gunnari) in Subarea 48.3 Abstract / Description:  Management of the mackerel icefish (Champsocephalus ... gunnari) at South Georgia is complicated by the likelihood of substantial periodic variations in natural ... mortality rates. These may be associated with increased consumption of C. gunnari by Antarctic fur seals in ... DEVELOPMENT OF A MANAGEMENT PLAN FOR THE MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUBAREA 48.3 D.J ... Tampa, Fl. 33609-3437, USA Abstract Management of the mackerel icefish (Champsocephnlus gunnari) at ... South Georgia is complicated by the likelihood of substantial periodic variations in natural mortality ... rates. These may be associated with increased consumption of C. gunnari by Antarctic fur seals in years ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Автор(ы): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes

3. Assessments of by-catch in trawl fisheries at Heard and McDonald Islands

   Paper Title:  Assessments of by-catch in trawl fisheries at Heard and McDonald Islands Abstract ... (Statistical Division 58.5.2) to significantly affect, in the long term, spawning biomass of three taxa caught ... skates). The long-term annual yield for each of the three taxa was estimated using the generalised yield ... biomass estimates from surveys in the region from 1990 to 1993 and a limited amount of biological data ... ASSESSMENTS OF BY-CATCH IN TRAWL FISHERIES AT HEARD AND MCDONALD ISLANDS A.J. Constable, R. Williams and ... (Statistical Division 58.5.2) to significantly affect, in the long term, spawning biomass of three taxa caught ... skates). The long-term annual yield for each of the three taxa was estimated using the generalised yield ... biomass estimates from surveys in the region from 1990 to 1993 and a limited amount of biological data ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Автор(ы): Constable, A.J., R. Williams and W.K. de la Mare

4. Indices of prey availability near the Seal Island CEMP site: 1990 to 1996

   Paper Title:  Indices of prey availability near the Seal Island CEMP site: 1990 to 1996 Abstract ... / Description:  Four indices of prey availability are calculated from surveys conducted in the vicinity of the ... Seal Island CEMP site during the austral summers of 1990 to 1996. The indices are measures of average ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... CCAMLR Science, Vol. 4 (1997): 37-45 INDICES OF PREY ... Fisheries Science Center PO Box 271, La Jolla CA 92038, USA Abstract Four indices of prey ... availability are calculated from surveys conducted in the vicinity of the Seal Island CEMP site during the ... austral summers of 1990 to 1996. The indices are measures of average prey density, depth, distance from ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Автор(ы): Hewitt, R.P., G. Watters and D.A. Demer

5. Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf

   Paper Title:  Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South ... Georgia shelf Abstract / Description:  High values of coefficient of variation resulting from the ... calculation of mackerel icefish biomass (Champsocephalus gunnari) from trawl survey data on the South Georgia ... clarification of the techniques used. The objective of the present study is to analyse data on daily vertical ... WG-FSA-91/6 VERTICAL MIGRATIONS OF MACKEREL ICEFISH ... values of coefficient of variation resulting from the calculation of mackerel icefish biomass ... rationale for round-the-clock trawling and call for clarification of the techniques used. The objective of ... the present study is to analyse data on daily vertical migrations of mackerel icefish. The study used ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Автор(ы): Frolkina, J.A. and V.I. Shlibanov

6. Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys

   Paper Title:  Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and ... South Orkneys Abstract / Description:  A set of concentric zones of 20 km width was defined around ... selected colonies of penguins distributed around the coasts of the South Shetland and South Orkney Islands ... distribution in Subarea 48.2, probably as a result of more variable hydrographic conditions. About 50% of the ... WG-KRILL-92/19 DISTRIBUTION OF KRILL (EUPHAUSIA SUPERBA ... DANA) CATCHES IN THE SOUTH SHETLANDS AND SOUTH ORKNEYS DJ. Agnew* Abstract A set of concentric ... zones of 20 km width was defined around selected colonies of penguins distributed around the coasts of ... of more variable hydrographic conditions. About 50% of the catch in Subarea 48.1 from December to ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Автор(ы): Agnew, D.J.

7. Determination of Antarctic krill acoustic back-scattering cross-section

   Paper Title:  Determination of Antarctic krill acoustic back-scattering cross-section Abstract ... / Description:  When determining the density krill of concentrations it is necessary to know the acoustic cross ... -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... signal from one specimen resolved by the hydroacoustic instrument. By calculating the mean level of the ... - 141 - SC-CAMLR-V/BG/27 DETERMINATION OF ANTARCTIC ... When determining the density krill of concentrations it is necessary to know the acoustic cross ... -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... signal from one specimen resolved by the hydroacoustic instrument. By calculating the mean level of the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Автор(ы): Protaschuk, V.A. and T.A. Lukashova

8. Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000

   Paper Title:  Characteristics of krill aggregations in the South Sandwich Islands subarea in ... January–February 2000 Abstract / Description:  During the survey of Subarea 48.4 from 17 January to 1 ... swarms. Differences between spatial distribution patterns of different krill aggregation forms in ... characteristics of some 2 400 krill swarms detected in the study area were sized acoustically and are described in ... . 9 (2002): 145–164 145 CHARACTERISTICS OF KRILL AGGREGATIONS IN THE SOUTH SANDWICH ISLANDS ... the survey of Subarea 48.4 from 17 January to 1 February 2000 it was observed that krill was present ... distribution patterns of different krill aggregation forms in relation to water mass structure and dynamics ... were revealed. Distributional features and physical characteristics of some 2 400 krill swarms ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Автор(ы): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky

9. Guidelines for the preparation of hydroacoustic survey reports on krill

   Paper Title:  Guidelines for the preparation of hydroacoustic survey reports on krill Abstract ... / Description:  The proposed guidelines provide an opportunity to perform comparative analyses and checks of ... results obtained during echometric surveys of fish and krill, and to establish a data bank of these ... surveys. The unification of echometric survey data is aimed at increasing the effectiveness of research on ... PREPARATION OF HYDROACOUSTIC SURVEY REPORTS ON KRILL I.L.Kalikhman (U.S.S.R.) Abstract The proposed ... guidelines provide an opportunity to perform comparative analyses and checks of results obtained during ... echometric surveys of fish and krill, and to establish a data bank of these surveys. The unification of ... echometric survey data is aimed at increasing the effectiveness of research on the· quantitative assessment ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 165-193 : Автор(ы): Kalikhman, I.L.

10. Results of fish stock assessment survey, South Georgia region, November - December 1986

    Paper Title:  Results of fish stock assessment survey, South Georgia region, November- December ... 1986 Abstract / Description:  Biomasses and length compositions of eight stocks from South Georgia are ... described based on results of a stratified random bottom trawl survey. A total of 124 tows were undertaken ... . Biomass was estimated based on stratified swept-area calculations. Estimates of biomass of Notothenia ... - 143 - SC-CAMLR-VI/BG/12 Rev.1 RESULTS OF FISH STOCK ... Biomasses and length compositions of eight stocks from South Georgia are described based on results of a ... stratified random bottom trawl survey. A total of 124 tows was undertaken between 29 November and 17 ... based on stratified swept-area calculations. Estimates of biomass of Notothenia rossii and ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 143-183 : Автор(ы): Gabriel, W.L.

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