Search results
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Managing ecosystem uncertainty: critical habitat and dietary overlap of top-predators in the Ross Sea
Abstract: We summarize three types of data in order to increase appreciation among fishery ... managers of the close spatial and temporal ecological overlaps among top predators in the Ross Sea Shelf ... ): killer whale (type C), Weddell seal, Emperor penguin, Adélie penguin, and 4 species of flighted birds ... . Using data from satellite tags attached to top predators that occur at colonies and haul outs along the ...
Meeting Document : WG-EMM-06/29 : Author(s): Testa, J.W., Stewart, B.S., Olmastroni, S., Lyver, P., Karl, B., Eastman, J., Barton, K., Ballard, G., Toniolo, V., Wilson, P., Ainley, D.
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Revised South African work plan for 2013/14 for the joint Japan/South Africa research on Dissostichus spp. in Subarea 48.6
Abstract: A multi-year plan for research by Japan and South Africa aimed at yielding a tag-based ... assessment of the Dissostichus resource in statistical Subarea 48.6 was adopted in 2012 and formulated in CM ... of this research in 2013/14 and is to be read in conjunction with WG-SAM-13/11. Author(s): R.W ...
Meeting Document : WG-FSA-13/47 : Author(s): R.W. Leslie and S. Somhlaba (South Africa)
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The importance of standardising and validating new methods for CEMP to maintain the robustness of long-term time series
, non-disturbing monitoring within CEMP against a background of increasingly tight funding for long-term ... applied over larger areas and multiple sites at low cost with minimal impact. Comparing, validating and ... standardising new methods against current methods is critical to maintain the robustness of long-term time ... series and is an important consideration for the inclusion of new methods in the CEMP. We briefly ...
Meeting Document : WG-EMM-15/44 : Author(s): C. Southwell and L. Emmerson (Australia)
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An idea to incorporate potential recruitments in the krill density model
Abstract: A krill density model suggested during WG-EMM at Kochi (Dy?(1-Rl)-Dy-1?e-M=0) still ... involved uncertainties of age 1 krill. Present document improves the model by taking the uncertainties in ... accepted values of mortality M (0.8-1.0), the potential proportional recruitment should be larger than the ... in the model, dramatic variation of densities after 1994/95 season could not be clearly explained ...
Meeting Document : WG-EMM-99/51 : Author(s): S. Kawaguchi and M. Naganobu (Japan)
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Current temperature conditions off South Georgia during recent years (satellite data on Subarea 48.3)
Abstract: Satellite monitoring of sea surface temperatures (SST) off South Georgia (Subarea 48.3 ... ) which includes both analysis of real-time data from vessels and buoy stations provides constant ... information on the temperature conditions of the area. Weekly SST maps constructed from GOES-E and Meteosat-7 ... daily satellite data are used to develop maps of mean monthly SST and SST anomalies. For quantitative ...
Meeting Document : WG-EMM-02/17 : Author(s): G.P. Vanyushin (Russia)
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Extension to the krill-predator modelling exercise
extended to take account of a number of the suggestions made at the 1995 meeting of the CCAMLR Working ... Abstract: The krill-predator modelling calculations of Thomson and Butterworth (1995) are ... Group on Ecosystem Monitoring and Management. The resilience of the Antarctic fur seal population to ... krill harvesting is found to be strongly dependent on the estimate of the maximum annual growth rate (R ...
Meeting Document : WG-EMM-96/67 : Author(s): Thomson, R.B., Butterworth, D.S.
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Beach debris survey - Main Bay, Bird Island, South Georgia 1993/94
Abstract: The fourth year of survey of beach debris at Main Bay, Bird Island reported a 20 ... ). Debris accumulated throughout the summer accounted for only 16% of the total (a similar proportion to ... that in 1992/93). Of the winter debris, 60% occurred in September, following severe gales. Nylon line ... , comprising 77% of debris, was mainly identical to material used in the long-line fishery, as indicated by ...
Meeting Document : CCAMLR-XIV/BG/10 : Author(s): Delegation of the United Kingdom
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Data on krill, Euphausia superba Dana, consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
E.superba consumption not only for the region of the Kosmonavtov and Sodruzhestva Seas as a whole, but at ... Abstract: Basing on the materials of complex study of the Kosmonavtov and Sodruzhestva Seas ... fishes as its main consumers in the above areas. According to the data of trawlings in the depth range of ... coastal fish diet may make up to 9-18% of annual production of this crustacean. Author(s): Delegation of ...
Meeting Document : SC-CAMLR-X/BG/11 : Author(s): Delegation of USSR
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Incidental mortality arising from fisheries activities around Kerguelen Island (Division 58.5.1)
experimental long-lining cruise in deep waters at the shelf edge also showed the potential impact of this type ... Abstract: Causes of incidental mortality owing to fisheries activities around Kerguelen (Division ... of fishery if it develops in the Indian Ocean sector of the Southern Ocean. Trammel net fishing for ... research purposes in the coastal zone does not present any real danger for populations of marine birds and ...
Meeting Document : SC-CAMLR-X/BG/14 : Author(s): Delegation of France
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A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)
, made simultaneously either at two or at three frequency, and of the results of net samplings, the ... role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of ... obtain information about the mean size (length) of the organisms in each aggregation. In principle the ... abundance of the two populations can be estimated by single-frequency acoustics, using the standard echo ...
Meeting Document : WG-EMM-01/63 : Author(s): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)