Search results
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
Abstract: By way of simulation, this study investigated how the bias and precision of biomass ... program, in particular the effects of the size (tag size-overlap) and numbers of tagged fish, the duration ... of the tagging program, the type of auxiliary data used in the assessment, and the catch history ... emerged within this overall trend. The results show that in the early stages of the tagging program, a ...
Meeting Document : WG-FSA-12/18 : Author(s): P.E. Ziegler (Australia)
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ASSESSMENT OF SPATIAL-TEMPORAL DYNAMICS OF STANDARDIZED CPUE FOR KRILL FISHERY IN THE AREA 48
Abstract: The spatial-temporal dynamics of standardized abundance indices of krill in Area 48 ... based on the CCAMLR catch statistics was analyzed using GLMM with Tweedie’s distribution.In the ... yesteryear the authors revealed “diagnostics specificity” of GLMM tuning for CPUE standardization: many hauls ... to be interpreted as “outliers”, i.e. the hauls where residuals significantly deviated from the ...
Meeting Document : WG-EMM-11/28 : Author(s): S.M. Kasatkina and P.S. Gasyukov (Russia)
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The use of Antarctic shags to monitor coastal fish populations: evaluation and proposals after five years of test of a standard method
Abstract: This overview reflects the main points of the feasibility of using the Antarctic Shag ... . Likewise, the history of the development of this theme in relation to the EMM and FSA Working Groups of ... CCAMLR since the onset of the 1990s until the recent five year testing period of the Standard Method, is ... described. Among other conclusions, the analysis of pellets is an adequate method to estimate qualitatively ...
Meeting Document : WG-EMM-03/5 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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THE NEED FOR TRADE MEASURES IN CCAMLR
Abstract: Last year the Commission considered a proposal for a Conservation Measure concerning ... the adoption of a trade measure that will promote compliance with CCAMLR’s agreed upon rules to bring ... sustainable fishing. The proposal received the support of all but one State. ASOC would like to support the ... adoption of this Conservation Measure by the Commission at its XXVII Meeting, and clarify why the adoption ...
Meeting Document : CCAMLR-XXVII/BG/28 : Author(s): Submitted by ASOC
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Modeling the growth dynamics of Antarctic krill
examine the growth dynamics of Antarctic krill, Euphausia superba. A system of coupled, ordinary ... differential equations was developed to describe the growth of krill between 2 and 60 mm. The metabolic ... processes included in the model were ingestion, assimilation efficiency, a baseline respiration. respiratory ... resulted in the transfer of individuals to the next highest size class (growth), whereas negative net ...
Meeting Document : WG-EMM-96/68 : Author(s): Lascara, C.M., Hofmann, E.E.
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Assessment of incidental catches of seabirds in the French EEZ included in Division 58.5.1 and Subarea 58.6
Abstract: France presented at the CCAMLR XXVIIth meeting, an action plan aiming to reduce ... incidental avian mortality by half in the French EEZ included in the statistic division and subarea 58.5.1 ... and 58.6, for the period 2008/2009 to 2011/2012. France demonstrated at the CCAMLR XXXth meeting, to ... have successfully fulfilled its commitments and to have obtained encouraging results concerning the ...
Meeting Document : WG-FSA-13/06 : Author(s): C. Marteau (France)
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SCAR Report on Marine Acoustics and the Southern Ocean
Abstract: The Scientific Committee on Antarctic Research (SCAR) convened its third international ... workshop on marine acoustic studies at the University of Cadiz, Spain in January 2006. The purpose of the ... workshop was to review improvements in knowledge and understanding of the interactions between marine ... mammals and noise generated by human activities in the Southern Ocean. The workshop revised the original ...
Meeting Document : CCAMLR-XXV/BG/23 : Author(s): Submitted by SCAR
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Mackerel icefish Champsocephalus gunnari in the diet of upper trophic level predators at South Georgia: implications for fisheries management
Abstract: Mackerel Icefish Champsocephalus gunnari Lönnberg is an important component of the ... important prey species for a number of upper trophic level predators, and is the target of commercial ... fisheries. Data on the frequency and size structure of C. gunnari in the diet of Antarctic fur seals ... used to examine the trophic interactions and evaluate the potential impact of predators on the C ...
Meeting Document : WG-FSA-03/74 : Author(s): K. Reid, S. Hill and T. Diniz (United Kingdom)
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
Abstract: The Patagonian toothfish, Dissostichus eleginoides, has been reported as prey of ... Elephant seals in the Heard Island region. A question was raised at SC-CAMLR-XV concerning what affect the ... fishery for toothfish in Division 58.5.2 might have on the abundance of the age classes of toothfish ... preyed on by these seals. This paper provides an updated analysis of the age of toothfish taken by ...
Meeting Document : WG-EMM-97/42 : Author(s): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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By-catch of juvenile Antarctic fish from krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
krill fishing by the BAT GrigOly Kovtun in the region of the South Georgia Islands during the period May ... -June 1992. Two species were predominant in the by-catches: Champsocephalus gunnari and Nototheniops ... larseni. The frequency of occurrence of juvenile fish was 18.2% when considering all krill tows and 45.5 ... krill, ranged from 700 to 18 900 individuals. In the case of C.gunnari, average values were 966±225 ind ...
Meeting Document : WG-FSA-93/8 Rev. 1 : Author(s): E.A. Pakhomov and S.A. Pankratov (Ukraine)