Resultados de la búsqueda
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Exploratory analysis of acoustic data from the Ross Sea
conducting acoustic surveys for toothfish and rattails in the Ross Sea. Acoustic data were collected using a ... could be compared with longline catches. Each ‘line’ recording was between 20 and 50 min long ... suitable for acoustic analysis. The other 16 files were rejected because data quality was too poor (11 ... January 2003, and the occurrence of a double bottom echo caused by too high a ping rate from 23–30 January ...
Meeting Document : WG-FSA-SAM 03/9 : Autor(es): R.L. O’Driscoll and G.J. Macaulay (New Zealand)
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Preliminary acoustic results from the New Zealand IPY-CAML survey of the Ross Sea region in February-March 2008
and fish length was unusual, having an extremely high slope for fish less than 11 cm. Preliminary ... ). The 50 day voyage on the research vessel Tangaroa involved an extensive survey of marine organisms ... demersal trawls shallower than 500 m. A weak layer at about 80 m depth was found to be associated with ... juvenile silverfish of 40–80 mm standard length. The other major source of acoustic backscatter on the Ross ...
Meeting Document : SG-ASAM-09/05 : Autor(es): R. O’Driscoll, G. Macaulay, S. Gauthier, M. Pinkerton and S. Hanchet (New Zealand)
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On assessing the size of the humped rockcod stock (Notothenia gibberifrons) in Subarea 48.3
thousand tonnes for N. gibberifrons biomass in the 1989/90 season. It is thus possible to suggest a TAC of ... Abstract: An adaptive approach was used to assess the Notothenia gibberifrons stock in Area 48.3 ... imperative to estimate the catchability coefficient. This parameter was equal to 0.326 to 0.635. An adaptive ... logarithms of observed and calculated biomass indices and resulted in an estimate of from 21.5 to 42.1 ...
Meeting Document : WG-FSA-91/26 : Autor(es): P.S. Gasiukov (USSR)
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WG-CSD-87
Full Name: Working Group for the Development of a Conservation Strategy Location: Hobart ... of a Conservation strategy for Antarctic marine living resources Australia WG-CSD-87/07 EEC ... Background paper on Conservation strategy WG-CSD-87/08 IUCN statement for the 1987 meeting of the Commission ... for the Conservation of Antarctic Marine Living Resources WG-CSD-87/09 Considerations for the ...
Meeting
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Modelling the dynamics of krill populations in the Antarctic Peninsula region
data for the first age class produced an instantaneous mortality rate estimate of approximately 0.6 ... a relatively poor fit to the observed data. Using the recruitment data for the second age class ... observed density changes. The need for caution in interpreting the model results was emphasized by an ... second method develops a fully age-structured population model and uses only the recruitment data to ...
Meeting Document : WG-EMM-99/56 : Autor(es): E.J. Murphy (United Kingdom), A. Constable (Australia) and D. Agnew (United Kingdom)
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Characteristics of distribution of krill aggregations in fishing grounds off Coronation Island in 1989-1990 season
Author(s): S.M. Kasatkina and V.I. Latogursky (USSR) Title: Characteristics of distribution of krill aggregations in fishing grounds off Coronation Island in 1989-1990 season Approval: Approved
Meeting Document : WG-KRILL-90/20 : Autor(es): S.M. Kasatkina and V.I. Latogursky (USSR)
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The CCAMLR Ecosystem Monitoring Program (CEMP)
Author(s): Secretariat Title: The CCAMLR Ecosystem Monitoring Program (CEMP) Approval: Approved
Meeting Document : WG-CEMP-90/20 : Autor(es): Secretariat
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On reproduction of Electrona carlsbergi Tåning
Abstract: A subject of the present study is Electrona carlsbergi from the Atlantic sector of the Southern Ocean. Results from histological examination of gonads are presented. From materials available it has been ascertained that Electrona carlsbergi breeds in the notal zone. The ripening of
Meeting Document : WG-FSA-90/20 : Autor(es): G.P. Mazhirina (USSR)
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Results from the 2019 annual acoustic krill monitoring off the South Orkney Islands
comparison with previous survey years and provide some context for the large scale survey estimate, we here ... surveys from 2011 to 2018. The distribution was similar to previous years with most krill along the shelf ... conducted by RV Kronprins Haakon as part of the Scotia Sea large scale krill monitoring effort. To allow for ... responsibility for releasing documents: Norway ...
Meeting Document : WG-EMM-2019/69 : Autor(es): G. Skaret, B.A. Krafft, G. Macaulay, T. Knutsen and O.A. Bergstad
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
. Specimens of 70 to 80 mm predominated. An echometric survey for myctophids, carried out from 18 to 31 ... Table 1. An oscilloscope was used to monitor input signals and an "Iskra-226" computer was used for ... for more than 90% of the total catch. Besides fish, salps were also numerous. Among other species ... February 1988 an echometric survey for myctophids was conducted in the Polar Frontal Zone from 48° to 51 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Autor(es): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva