Resultados de la búsqueda
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Detection of predator dive patterns from stationary echosounder data
clear patterns in the dive data with regards to time of year as well as time of day. At the temporal ... Abstract: Standard protocols for processing of echosounder data are geared towards the estimation ... of biomass indices of pelagic organisms. More transient visitors to the watercolumn however also give ... echoes, and the data provided by the echosounders may be used to assess the behaviour of these organisms ...
Meeting Document : WG-EMM-2019/34 : Autor(es): T. Klevjer and G. Skaret
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Trade data analysis – Annual report of global toothfish trade data
forms with mean unit values of 24.03 US$/kg for imports and 23.40 US$/kg for exports. The data ... sources for the trade of toothfish products for the 2018 calendar year. The analysis has identified that ... identified the largest importer was the United States of America (USA), accounting for 36.50% of the global ... import market. The largest exporter was Chile accounting for 17.90% of the global export market ...
Meeting Document : CCAMLR-38/BG/09 : Autor(es): CCAMLR Secretariat
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Characteristics of krill swarms from Prydz Bay
survey of Prydz Bay, Antarctica, in December 1990. Swarm length, depth, thickness, MVBS and interswarm ... length was calculated for swarms of euphausids encountered along a 78 km transect over the continental ... crystallorophias. An increase in swarm length was seen with increasing distance from the coast. Author(s): D.J ... Abstract: The CCAMLR.AUS dataset available to the Subgroup on Survey Design was derived from a ...
Meeting Document : WG-KRILL-91/07 : Autor(es): D.J. Agnew (Secretariat) and I.R. Higginbottom (Australia)
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CEMP 2018/19 data and updated spatial analysis of Area 48
patterns of inter-annual variability of the response by krill-dependent predators to changes in the ... ecosystem. The CSI analysis continues to show evidence of concordance of response to changes in the ... Abstract: This paper reports on the CCAMLR Ecosystem Monitoring Program (CEMP) data submissions ... for the 2018/19 monitoring season detailed by site and species, and includes an update to the Combined ...
Meeting Document : WG-EMM-2019/04 : Autor(es): CCAMLR Secretariat
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Feeding and food intake of Electrona carlsbergi (Tåning) (Myctophidae)
E. carlsbergi during the year in the southern regions of the Antarctic Convergence is about 15 times ... Abstract: In the summer-autumn period E. carlsbergi fed mainly on copepods. Daily food intake ... measured using various methods ranged from 3.7 to 5.6 % of fish body weight. The amount of food consumed by ... its own weight. Author(s): O.V. Gerasimova (USSR) Title: Feeding and food intake of Electrona ...
Meeting Document : WG-FSA-90/18 : Autor(es): O.V. Gerasimova (USSR)
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Distribution of foraging by female Antarctic fur seals
the spatial impact of breeding female fur seals on krill at South Georgia. This suggested that, in ... present in some regions where they forage intensively. However, mean consumption was about one-tenth of ... the mean density of krill. Author(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom ... Abstract: The study examined the distribution of critical habitat for foraging by female ...
Meeting Document : WG-EMM-03/38 : Autor(es): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Proposal for a revised summary table used for assessment of new and ongoing research plans
Abstract: At WG-SAM-2019, it was highlighted that some of the language in the table used to ... English as their first language. In this paper, we propose some revisions to the table to attempt to ... assess research plans in data-poor fisheries was ambiguous, in particular to delegates that do not have ... used for assessment of new and ongoing research plans Microsoft Word File: fsa-2019-55.docx Approval ...
Meeting Document : WG-FSA-2019/55 : Autor(es): C. Péron and D. Welsford
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Target strength of Antarctic krill
Abstract: In-situ measurements of individual krill target strength are presented (modal value ... reproductively mature and averaged 47.44mm in length. Results agree well with recent predictions of acoustic ... target strength based on extrapolations of other field experiments using the bent cylinder model of sound ... scattering by elongated zooplankters. The modal value of the measurements is 6.7dB lower than that predicted ...
Meeting Document : WG-KRILL-91/13 : Autor(es): R.P. Hewitt and D.A. Demer (USA)
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Abundance estimation of Adélie penguins colony at Esperanza/Hope Bay
, similar to what has been observed in other colonies throughout the WAP. The assessment of this population ... will contribute to the estimate of total predator biomass in Area 48. Author(s): M.M. Santos, N.R ... Abstract: We conducted a whole-colony census of the Adélie penguin colony at Esperanza/ Hope Bay ... /96 to 2012/13. Both the whole colony and the selected breeding groups exhibit population declines ...
Meeting Document : WG-EMM-13/43 : Autor(es): M.M. Santos, N.R. Coria, E. Barrera-Oro (Argentina) and J.T. Hinke (USA)
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Preliminary results from CEMP monitoring of Antarctic fur seals, chinstrap penguins and macaroni penguins at Bouvetøya 1996/97
was established at the CEMP site, Nyrøysa, on the western coast of the island. Species included in the ... sharply since the last count in 1989/90. The population of Macaroni Penguins has shown a more moderate ... from the first season of CEMP monitoring (parameters A3, A4, A5, A6, A8, A9, C1 and C2) are reported ... population changes of penguins and fur seals). The population of Chinstrap Penguins at Nyrøysa has declined ...
Meeting Document : WG-EMM-97/20 : Autor(es): Hofmeyr, G.J.G., Dyer, B.M., Næstvold, A., Mehlum, F., Gjertz, I., Bakken, V., Isaksen, K., Huyser, O.