Search results
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Spectra analysis of Drake Passage Oscillation Index (DPOI) from 1952 to 2003, Antarctica
Abstract: An assessment of the environmental processes influencing variability in the recruitment ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... affects the Antarctic marine ecosystem as a whole. Naganobu et al. (1999) had assessed variability in ... , Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula, sea ice cover and chlorophyll-a in the ...
Meeting Document : WG-EMM-04/46 : Author(s): M. Naganobu and K. Kutsuwada (Japan)
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Proposed movement of boundary between Subareas 88.1 and 88.2
Subarea 88.1 and Statistical Subarea 88.2 in order to harmonise with the exploratory fisheries for ... Dissostichus mawsoni in those subareas and with other conservation measures in force. The proposal would move ... complexity that currently adds an administrative burden on Members and the Secretariat in respect of fishery ... these would have no material impact on the operation of fisheries in these areas. The Secretariat ...
Meeting Document : CCAMLR-XXXVII/22 : Author(s): CCAMLR Secretariat
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The food and feeding ecology of the white-chinned petrel Procellaria aequinoctialis at South Georgia
the chick-rearing period in 1986 by quantitative analysis (by weight, frequency of occurrence and ... ; fish and squid occurred In 67% and 35% of samples and formed 33% and 19% of the diet by weight ... , respectively. Decapods, amphipods and salps occurred in a few samples. The fish were mainly lanternfish ... (Myctophidae) of 8 species (chiefly in the genera Electrona and Gymnoscopelus), forming 80% by numbers and 52 ...
Meeting Document : WG-CEMP-94/14 : Author(s): J.P. Croxall, A.J. Hall, H.J. Hill, A.W. North and P.G. Rodhouse (United Kingdom)
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OPTIONS FOR USING UNREPLICATED ECOSYSTEM MONITORING DATA TO DETECT IMPACTS
. Furthermore, CEMP data cannot be used in a standard environmental impact assessment framework as they lack ... control sites. Identifying how these data could be used in an ecosystem management strategy is therefore ... and a schedule of tactical interventions in response to these impacts (e.g. restrictions on fishing ... either assess the expected probability of an observed value in an unimpacted system, or they assess the ...
Meeting Document : WG-EMM-09/26 : Author(s): S. Hill, J. Forcada, P. Trathan and C. Waluda (United Kingdom)
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation
other model parameters in integrated assessments via CASAL for the Heard and McDonald Islands (HIMI ... -recapture data were generated for 12 years of fishing. Two alternative estimation models were programmed in ... (ODE) for within-year population dynamics. The difference in the models derives from differences in ... likelihood components avoiding the difficultly in appropriately weighting separate components. Also, for a ...
Meeting Document : WG-SAM-10/11 Rev. 1 : Author(s): S.G. Candy (Australia)
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Chlorophyll distributions around the South Shetland Islands
patterns around the South Shetland Islands in the Antarctic survey of R/V the Kaiyo Maru from 13 December ... 1990 to 11 January 1991 (Leg I) and from 16 January to 11 February 1991 (Leg II). In the north of ... Livingston Island, high chlorophyll a concentration and low POC/chlorophyll a ratio in Leg II and low ... chlorophyll a concentration in Leg I suggest that phytoplankton bloom occurred in this area for about one ...
Meeting Document : WG-KRILL-93/23 : Author(s): H. Ishii, T. Ichii and M. Naganobu (Japan)
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Age/length key for Champsocephalus gunnari from South Georgia; Hill Cove survey, January 1990
Abstract: Discrepancy was noted between the age length key and modes in the length distribution ... of Ch. gunnari from the Hill Cove survey around South Georgia in January 1990. A revised age length ... key for this survey is proposed, based on data from a previous survey in the area. The revised age ... length key corresponds well to modes in the length distribution from the survey and to another key ...
Meeting Document : WG-FSA-91/18 : Author(s): G. Parkes (United Kingdom)
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Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
Abstract: In this paper, I show how data that are routinely collected by survey vessels can be ... used to estimate the number of Concentrations of krill (in the sense of Butterworth (1988), Mangel ... (1988)) in a given region of the southern ocean. Sample computations are performed, using data collected ... by Soviet research/survey vessels in the early 1980s. These examples highlight the need for a ...
Meeting Document : WS-KCPUE-89/06 : Author(s): M. Mangel (South Africa)
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Potential for using CCAMLR VMS data for compliance analysis and data quality assurance
Abstract: In response to a request from the Scientific Committee the Secretariat has initiated a ... process to utilise VMS data for data-quality assurance in relation to catch data. This represents a change ... in focus on the use of VMS data by CCAMLR and requires a contingent change in emphasis on data ... quality assurance processes in order to ensure that the VMS can be used with an appropriate degree of ...
Meeting Document : SC-CAMLR-XXXIV/BG/19 : Author(s): CCAMLR Secretariat
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Preparing for the Year of the Skate: proposed information collection and tagging protocol for skates
Abstract: Skates are an important bycatch of the toothfish fishery in the CCAMLR area and have ... required before a full assessment can be carried out. In 2007, CCAMLR-SAM-WG recommended (CCAMLR XXVI WG ... collection effort on bycatch will be concentrated on skate species in that year in order to inform a full ... data from the fishery and a revised skate tagging protocol. These changes could be piloted in the 2007 ...
Meeting Document : WG-FSA-07/39 : Author(s): S. Mormede, A. Dunn, J. Fenaughty, M. Francis, S. Hanchet, R. O’Driscoll and N. Smith (New Zealand)