Search results
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Movement and growth of tagged toothfish around South Georgia and Shag Rocks (Subarea 48.3)
of the fish recaptured to date were tagged and released during the experimental pot fishing in 2000 ... recaptures of these fish tagged at South Georgia or elsewhere in the South Atlantic. Similarly, tags ... Abstract: In 2000 the UK started a toothfish (Dissostichus eleginoides) tagging programme. The ... aims were to investigate the spatial and temporal movement of fish and to validate growth estimates ...
Meeting Document : WG-FSA-02/28 : Author(s): T.R. Marlow, D.J. Agnew and I. Everson (United Kingdom)
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Effect of missing modes on calibration sphere target strengths (ICES CM 1996/b: 37, Fish Capture Committee)
used in the calibration of echo sounder systems, can be affected by the manner of suspension. This ... hypothesis is investigated in the context of reported experimental calibration trials with the SIMRAD EK500 ... reported measurement conditions for a series of cases in which single vibration modes remain unexcited. The ... is not supported by the data. Author(s): Foote, K.G. Title: Effect of missing modes on calibration ...
Meeting Document : WG-EMM-96/46 : Author(s): Foote, K.G.
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Trade data analysis – Reconciliation of CDS data with fine-scale catch and effort data
demonstrated the effectiveness of the CDS to trace the catch of toothfish caught in the CCAMLR Convention Area ... implemented in the reconciliation of trade data and other relevant CCAMLR datasets. Author(s): CCAMLR ... Abstract: The reconciliation of CDS data with monthly fine-scale catch and effort data has ... ongoing. This reconciliation has demonstrated the success in the methodology and will in the future be ...
Meeting Document : CCAMLR-XXXVII/BG/14 Rev. 1 : Author(s): CCAMLR Secretariat
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A krill–predator–fishery model for evaluating candidate management procedures
Statistical Area 48 amongst smaller spatial units in order to minimize the localized depletion of krill in ... well as fishery performance. This evaluation must be conducted in the context of considerable ... transport, production, predation and harvesting in the operation of the krill-predator-fishery system ... necessary to evaluate these procedures in terms of their likely effects on krill and predator populations as ...
Meeting Document : WG-EMM-05/13 : Author(s): G.M. Watters, J.T. Hinke (USA), K. Reid and S. Hill (United Kingdom)
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Preliminary study on reproduction in Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994
Abstract: A preliminary histological analysis on the ovarian development in Champsocephalus ... commonly used. Oocytary resorption processes were observed during ovarian maturation. In some cases the ... ovaries presented few atretic oocytes; in others a generalized regression was found. In the southwest ... portion of the South Georgia shelf, 50 % of the ovaries exhibited a pre-reproductive regression stage ...
Meeting Document : WG-FSA-94/28 : Author(s): G.J. Macchi and E.R. Barrera-Oro (Argentina)
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Revisiting krill ageing method using eyestalk cuticles
promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ... point of contention among crustacean researchers. Since the interpretation of growth bands in thin ... Abstract: The development of a consistent and reproducible ageing method for krill is critical ... for improving the precautionary management of krill fisheries. The only method to date that has shown ...
Meeting Document : WG-EMM-2019/45 : Author(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda
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Classification of Southern Ocean krill and icefish echoes using Random Forests
of echograms and analysis of differences in mean volume backscattering strengths (S V; dB re 1 m-1) measured ... with an overall estimated accuracy of 95 %. Minimum S V, mean aggregation depth (m), mean distance from the seabed ... . Random forests are an objective means for target identification, and could facilitate the inclusion ... and analysis of differences in mean volume backscattering strengths (SV; dB re 1 m-1) measured at two or more ...
Meeting Document : WG-EMM-16/23 : Author(s): N. Fallon, S. Fielding and P. Fernandes
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BEACH DEBRIS SURVEY SIGNY ISLAND, SOUTH ORKNEY ISLANDS 1996/97
lowest recorded since the surveys began in 1990, both in terms of weight and number of items. This ... which was brought into force by CCAMLR in 1996, almost half (49%) of the plastic items found at Signy ... in 1996/97 was the lowest ever recorded, the considerable number of packaging bands still being ... , and comply with, regulations preventing the disposal of debris in the Southern Ocean. Author(s ...
Meeting Document : CCAMLR-XVI/BG/6 : Author(s): Delegation of the United Kingdom
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Analisis de los censos de Arctocephalus gazella efectuados en el sitio de especial interes cientifico no. 32, Isla Livingston, Antarctica
results show that the population size of this species, in the study area increased during 26 years, form ... that future censuses carry out in the Cape Shirreff also include the breeding colonies of San Telmo ... in Viña del Mar (Chile) in August 1992, the information about four complete censuses on the Antarctic ... Island, because these animals are part of the same population. San Telmo Island is a part of the SSSI No ...
Meeting Document : WG-CEMP-93/24 : Author(s): A. Aquayo L. and D. Torres N. (Chile)
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Educational observer on board fishing vessels in Brazil
/obligation on the usage of these measures is in force. Author(s): Delegation of Brazil Title: Educational ... Abstract: We inquired several social aspects of two Brazilian crews working in pelagic longline ... order to investigate the social and professional character of each crew member. Overall, our results ... show a low level of studies among these professionals. We suggest the implementation of a new concept ...
Meeting Document : SC-CAMLR-XXV/BG/20 : Author(s): Delegation of Brazil