Résultats de la recherche
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Historical data synthesis in the Southern Ocean: Priority data sets
anthropogenic-induced change. Such information can be used to underpin sustainable management strategies. We ... give an example of an historical data rescue project that is being conducted by ICED scientists at the ... Southern Ocean, the Discovery Investigations (1925-1951). ICED is keen to work with CCAMLR to determine how ... working alongside CCAMLR scientists to identify other relevant datasets that require rescue and ...
Meeting Document : WG-EMM-13/19 : Auteur(s): N.M. Johnston, E.J. Murphy, J.R.D. Silk, C.M. Waluda, S.L. Hill and R.D. Cavanagh (United Kingdom) on behalf of the ICED Scientific Steering Committee
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Density and biomass of Antarctic krill around South Shetland Islands using by 2-dB difference method
peripheries (33.8), with the length of the aggregations exceeding their height. It was evident that most krill ... backscattering strength (Sv) frequencies (38 and 120 kHz), a clear acoustic distinction could be made between ... of the South Shetland Islands (64.5) was higher than that in the south (35.9) and the Elephant Island ...
Meeting Document : SG-ASAM-17/04 : Auteur(s): S.-G. Choi, K. Lee and D. An
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CCAMLR Statistical Bulletin, Vol. 27
60.46 T++ no CDS 2000 TOP ZAF ZAF 439.744 USA no CDS 2001 TOP ARG ARG 360.181 CHN ... 3.46 MYS no CDS 2001 TOP CHL CHL 53.947 SGP no CDS 2001 TOP CHL CHL 39.134 T++ no ... 22.741 T++ no CDS 2001 TOP FRA FRA 816.674 USA no CDS 2001 TOP GBR ESP 5.412 CHN no ... 12.002 THA no CDS 2001 TOP KOR MUS 13.759 T++ no CDS 2001 TOA NZL NZL 0.013 AUS no ...
Document : Site Section: Data
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A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey
tonnes, with a standard deviation of 10 million tonnes. The MaxEnt method provides new insights into the ... major strength of MaxEnt. The chosen reconstruction must be that with the highest evidence, regardless ... situations of sparse data allow so many different possible maps to be consistent with that data. It is ... data can be considered as an image in which krill densities are plotted on a rectangular grid, with ... - 2000 Survey. There is in principle no mathematical transform that can be applied to the data that will ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Auteur(s): Heywood, B.G., A.S. Brierley and S.F. Gull
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2017 – Reflection of the recommendations by WG-EMM-16 and SC-CAMLR-XXXV
the level of protection for Antarctic toothfish and other demersal fish that explores a range of ... approach based on the updated data layer is shown. In Chapter 4 we outline the way we- at that stage ... . Teschke, H. Pehlke and T. Brey Title: Scientific background document in support of the development of a ...
Meeting Document : WG-FSA-17/29 : Auteur(s): K. Teschke, H. Pehlke and T. Brey
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
debris for the first time from Marion Island (Subarea 58.7). There are 4 sites that have data for more ... the debris associated with seabird colonies. The number of Antarctic fur seal entanglements at Bird ... Island reached a peak in 1993 and has showed a general decline since, with the lowest levels on record ... be the main entangling materials. Seabirds were reported entangled at Bird Island for the first time ...
Meeting Document : SC-CAMLR-XXIV/BG/13 : Auteur(s): Secretariat
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An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
monitoring. With appropriate survey design, gliders can be used for estimating krill distribution and ... analysis of glider pitch and roll indicated that, if not taken into account, glider orientation can impact ... survey boxes showed features coherent with ship-borne measurements, with peak densities in both boxes ...
Meeting Document : WG-EMM-14/P02 : Auteur(s): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths
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Results of 2016 pop-off satellite archival tagging of Antarctic toothfish in the Ross Sea region
proposed to be implemented by a number of Members, we suggest that additional work, including product ... in the southern Ross Sea, data from two tags were reported via Argos (one with full data, one with ... development, is urgently needed to develop best practice guidance for tagging toothfish with PSAT tags. Author ...
Meeting Document : WG-SAM-17/33 : Auteur(s): C.D. Jones and S.J. Parker
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Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation
orientation corresponding to each insonification, revealed that echo spectra from krill near broadside ... echo spectra had a more erratic structure, with several closely spaced nulls of variable depth. The ... pattern of changes in echo spectra with orientation for the experimentally measured acoustic returns was ... inversion technique can be implemented using a generic empirical model space to determine angle of ...
Meeting Document : WG-EMM-99/41 : Auteur(s): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)
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Admiralty Bay (South Shetland Islands) - long-term marine monitoring program
vulnerable region of Western Antarctic. It is widely assumed that Antarctic biota are sensitive to ... predictions of future change. Comparison of the collected data with the archive data sets will allow us to ... biotic elements in Admiralty Bay. In this paper we provide WG-EMM with an update on proposed project ... ". This project will continue to develop over the coming years and results we will be presented and ...
Meeting Document : WG-EMM-15/47 : Auteur(s): A. Panasiuk-Chodnicka, M. Korczak-Abshire, M.I. Żmijewska, K. Chwedorzewska, E. Szymczak, D. Burska, D. Pryputniewicz-Flis and K. Łukawska-Matuszewska (Poland)