Search results
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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 : Author(s): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes
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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 : Author(s): Frolkina, J.A. and V.I. Shlibanov
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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 : Author(s): Hewitt, R.P., G. Watters and D.A. Demer
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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 : Author(s): Agnew, D.J.
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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 : Author(s): Protaschuk, V.A. and T.A. Lukashova
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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 : Author(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky
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The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model
=O.5% of T AC par day • 1% ofTAC/day O.S J:I 2"10 of TAC par day Cl C . 'c:;~ -;:f- C3 '" ~ = 0.6 ... , and show local minima which occur at different values ofL with different catch rates. 90 Tableau ... Paper Title: The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a ... deciding the closure date for fisheries monitored by the Secretariat of CCAMLR, have been difficult to ... implement because of the variation in catch rates shown by the fisheries. Non-fluctuating random and ... fluctuating random catch histories are simulated and the performance of four models for making closure ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Author(s): Agnew, D.J.
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Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
ofMarine Science, 16: 101-118. Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery. 1988 ... Paper Title: Trends in population size and breeding success at colonies of macaroni and ... , annual breeding success of macaroni (Eudyptes chrysolophus) between 1979/80 and 1995/96 and rockhopper ... penguins (E. chrysocome) between 1985/86 and 1995/96 was measured. For macaroni penguins, averages of 0.48 ... for rockhopper penguins were 0.68 eggs and 0.48 respectively. The largest of the three macaroni ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Author(s): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford
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Results of a longline survey on seamounts in the southeast Atlantic and in Subarea 48.6 and Division 58.4.4
Paper Title: Results of a longline survey on seamounts in the southeast Atlantic and in Subarea ... October and 1 December 1997, and several seamounts were surveyed to the south of Africa: close to the ... of Bouvet Island, Ob and Lena Banks). Samples were collected from longlines set perpendicularly to ... toothfish (Dissostichus eleginoides), with 2 822 individuals caught (83% of total catch). Grenadiers of the ... RESULTS OF A LONGLINE SURVEY ON SEAMOUNTS IN THE SOUTHEAST ATLANTIC AND IN CCAMLR SUBAREA 48.6 (ATLANTIC ... several seamounts were surveyed to the south of Africa: close to the Antarctic Polar Front (Meteor Bank ... ) and in the CCAMLR region (Shona and Spiess seamounts, the western slope of Bouvet Island, Ob and Lena ... eleginoides), with 2 822 individuals caught (83% of total catch). Grenadiers of the genus Macrourus were the ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 99–116 : Author(s): López Abellán, L.J. and J.F. González Jiménez
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove
Paper Title: Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and ... Potter Cove Abstract / Description: The long-term monitoring program of demersal fish at inshore sites ... of the South Shetland Islands has continued at Potter Cove from 2000 to 2006, extending a continuous ... sampling period of 24 years which began in 1983, and at Harmony Cove in the summers of 2001to 2003. The ... , Vol. 14 (2007): 83–87 83 INFORMATION ON THE STATUS OF FJORD NOTOTHENIA ROSSII, GOBIONOTOTHEN ... , Argentina Abstract The long-term monitoring program of demersal fi sh at inshore sites of the South ... of 24 years which began in 1983, and at Harmony Cove in the summers of 2001 to 2003. The decline in ... trammel net catches of fjord Notothenia rossii and Gobionotothen gibberifrons in relation to the non ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Author(s): Barrera-Oro, E.R. and E.R. Marschoff