Search results
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Analysis of spatial and temporal structure in long-term krill fishery in the Area 48 and its relation to climate variability
Abstract: The authors analyzed the influence of climate changes on space-time dynamic of ... Antarctic krill fishery in the Area 48 using the CCAMLR fishery data and time series of ААО induces ... (Antarctic Oscillation Index) as the indication of climate variability. Here we used the methods of the ... integrated ecosystem assessment used by ICES and the modern de-nosing data methods. The influence of climate ...
Meeting Document : WG-EMM-12/50 : Author(s): P. Gasyukov and S. Kasatkina (Russia)
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Preliminary assessment of Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a survey in May 2002
58.5.2 in the vicinity of Heard Island in May 2002 to provide the information for an assessment of long ... -term annual yield in the 2002/2003 CCAMLR season and beyond. This paper provides a preliminary ... assessment of yield using the assessment methods of CCAMLR, a summary of which is presented here. The ... estimate of biomass of juvenile Patagonian toothfish in the vicinity of Heard Island was similar to the ...
Meeting Document : WG-FSA-02/70 : Author(s): A.J. Constable, R. Williams and T. Lamb (Australia)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2005/06
Abstract: The exploratory fishery for Antarctic toothfish (D. mawsoni) has been operating for ... toothfish and the associated bycatch. All SSRUs in the two subareas except for 881D and 882C have now been ... fished. The 2006 D. mawsoni catch was the second highest on record with a total of 3388 t against a ... combined catch limit of 3451 t. The subarea catch limit was almost reached in both Subarea 88.1 and 88.2 ...
Meeting Document : WG-FSA-06/29 : Author(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
Abstract: A new method for estimating illegal fishing effort is put forward. The results from ... this new method are similar to those of the Agnew and Kirkwood (2005) method, and this suggests that ... the current method is adequate under circumstances of low evasion and when good knowledge exists that ... zero observations reflect zero illegal fishing. The new method performs better in the case of zero ...
Meeting Document : WG-FSA-05/P7 : Author(s): Ball, I.
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Results of study of the oogenesis characteristics of Antarctic toothfish (Dissostichus mawsoni Norman 1937) (Nototheniidae) from Subareas 88.1 and 88.2 (Ross Sea)
Abstract: The results of the histological analysis of the Antarctic toothfish (Dissostichus ... mawsoni) reproductive system, caught in December-March, 2004-2005 by the longliner VOLNA in subareas 88.1 ... and 88.2 in the Ross Sea are presented. The morphological parameters, indices of gonads have been ... described. The histological criteria of the assessment of the ovary maturity stages and cytological ...
Meeting Document : WG-FSA-07/49 : Author(s): S. V. Piyanova and A.F. Petrov (Russia)
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Defining fishing grounds in the Scotia Sea
commercial catch data for the region held in the CCAMLR database. It also summarises available information on ... krill distribution and abundance and movement for the region, which can be used to help understand the ... relationship between the fishing grounds and the krill population. We define a fishing ground as being a ... predictable location where the fishery obtains relatively reliable catches from one year to the next over a ...
Meeting Document : WG-EMM-02/40 Rev. 1 : Author(s): I.R. Ball and A.J. Constable (Australia), S. Kawaguchi (Japan) and D. Ramm (CCAMLR Secretariat)
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Revised research plan for the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2: Fundamentals and procedures (this is a revision of WG-SAM-12/13)
Abstract: A revision of the research plan for the Spanish exploratory longline fishery for ... Dissostichus spp in Divisions 58.4.1 and 58.4.2, submitted to the XXXI-WG-SAM, taking into account the ... suggestions made by the Working Group is presented. Two methods to estimate the local biomass of the toothfish ... are proposed, a depletion experiment together with the tag of some specimens using the DeLury model ...
Meeting Document : WG-FSA-12/69 : Author(s): R. Sarralde, L.J López Abellán and S. Barreiro (Spain)
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Analysis of trawl data from the South Georgia krill fishery
Abstract: Data from individual trawls carried out by vessels operating in the krill fishery at ... South Georgia are examined and a range of descriptive measurements reflecting the operation of the ... fishery are produced. The measurements indicate that the krill fishery at South Georgia is geographically ... focussed, operating in a limited area along the shelf edge on the northern coast of the island. Each day a ...
Meeting Document : WG-EMM-97/41 : Author(s): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
Abstract: Changes in the Antarctic ecosystem have been triggered by anthropogenic and natural ... factors. This paper reviews the scientific information of whales that could be indicative of changes in ... the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis in the ... middle of the past century and the recovery of krill-eater large whales since the 1980’s. There was an ...
Meeting Document : WG-EMM-16/64 : Author(s): Y. Fujise and L.A. Pastene
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Factors influencing Antarctic krill distribution in the South Shetlands
Abstract: The influences of biological and physical factors in the environment upon krill ... (Euphausia superba) distribution were studies in the area north of South Shetland Islands during 1990/91 ... in mid-summer the abundance was low in the oceanic zone (8.5 g/m2), while higher in the slope frontal ... zone (37.3 g/m2), and the highest along the shelf break (135.1 g/m2) in the inshore zone; krill were ...
Meeting Document : WG-KRILL-93/38 : Author(s): T. Ichii, H. Ishii and M. Naganobu (Japan)