Search results
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An assessment of toothfish in Subarea 48.3 using CASAL
Abstract: The CASAL software has been successfully applied to an assessment of the stock of ... , with an extensive range of sensitivity tests and examination of diagnostics. A baseline assessment ... 45,893 t, and the spawning stock biomass was estimated to be 120,360 t, around 67% of its unexploited ... 49,943 t, and the spawning stock biomass was estimated to be 100657 t, some 64% of its unexploited level ...
Meeting Document : WG-FSA-05/16 : Author(s): R.M. Hillary, G.P. Kirkwood and D.J. Agnew (United Kingdom)
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Milk fatty acid signatures indicate both major and minor shifts in foraging ecology of lactating Antarctic fur seals
Abstract: Fatty acid signature analysis is based on the conservation and unique signatures of ... fatty acids in the marine food chain and it may be useful in determining the composition of seal diets ... perinatal fast are derived largely from blubber mobilization and thus likely resemble an integration of ... the lactation period. To compare groups, we used methods of classification and regression tree (CART ...
Meeting Document : WG-EMM-97/14 : Author(s): Boyd, I.L., Iverson, S.J., Arnould, J.P.Y.
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Using production models to assess the stock of Paralomis spinosissima around South Georgia Island
Abstract: Four production models were fit to a time series of daily catch per unit effort (CPUE ... recruitment function. The best fitting model was Model 1. Model 1 had three parameters: an estimate of initial ... abundance (N0), an estimate of the scaling coefficient relating abundance to CPUE (q), and a recruitment ... removals should not be greater than the number of crabs that recruit to the fishery during the course of a ...
Meeting Document : WG-FSA-93/23 : Author(s): George Watters (USA)
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ... date of capture showed two main periods of larval hatching separated by 5-6 months, one in late summer ... , indicating a timing of demersal settlement of about eight months from hatching. The age/length frequency ... distribution of fish sampled in spring 2010 showed the simultaneous presence of two different cohorts ...
Meeting Document : WG-FSA-12/04 : Author(s): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
% of the depth is deemed suitable as habitat for toothfish (120 cells – semi-restricted model), and ... – restricted model) or allowed to occupy the entire Ross Sea region including depths outside of those normally ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ... model estimates fish movements into cells outside of the fished area including those with implausible ...
Meeting Document : WG-FSA-13/53 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Blue-eyed shags as indicators of changes in ittora fish populations
Abstract: The use of Shag’s pellets as an appropriate technique to monitor the abundance of ... littoral fish populations is presented for consideration of the CCAMLR Ecosystem Monitoring Program Working ... Group. The effectiveness of the method is based on the very good agreement found between the fish ... species identified by the examinations of otoliths present in regurgitated cast and those regularly ...
Meeting Document : WG-CEMP-93/25 Rev. 1 : Author(s): R. Casaux and E. Barrera-Oro (Argentina)
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Target strength of Antarctic krill
Abstract: In-situ measurements of individual krill target strength are presented (modal value ... reproductively mature and averaged 47.44mm in length. Results agree well with recent predictions of acoustic ... target strength based on extrapolations of other field experiments using the bent cylinder model of sound ... scattering by elongated zooplankters. The modal value of the measurements is 6.7dB lower than that predicted ...
Meeting Document : WG-KRILL-91/13 : Author(s): R.P. Hewitt and D.A. Demer (USA)
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Ingestion of anthropogenic articles by seabirds at Macquarie Island
regurgitations and the stomachs of seabirds at Macquarie Island; these were ingested both at sea and on land ... . Eight percent of regurgitated casts from Macquarie Island Cormorants contained polystyrene beads ... . Plastic particles were recorded from the stomachs of Southern Giant Petrels, Subantarctic Skuas, and Kelp ... Gulls. Birds examined in 1988 had a higher frequency of occurrence of foreign objects than birds ...
Meeting Document : CCAMLR-VIII/BG/12 : Author(s): D.J. Slip, K. Green and E. Woehler (Australia)
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plotImage – software for producing augmented image plots of spatially referenced data
Abstract: Software is presented for the automated production of standardised image plots of ... spatially referenced data. While developed to satisfy the specific requirements of WG-FSA, the routines have ... been developed to be as generic as possible and may be useful for displaying a wide range of data. This ... Working Groups for the display of spatially referenced data. Author(s): J.P. McKinlay (Australia) Title ...
Meeting Document : WG-SAM-10/22 : Author(s): J.P. McKinlay (Australia)
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Proposal to amend Conservation Measure 10-05 to better achieve its objective taking into account different legal frameworks of the Contracting Parties
Abstract: The Republic of Korea proposes to amend CCAMLR Conservation Measure 10-05 to better ... frameworks in implementing relevant provision of the Measure. If adopted, the revised CM is expected to ... suspicion of being illegally caught but cannot be immediately seized or confiscated due to its domestic ... legal frameworks. Author(s): Delegation of the Republic of Korea Title: Proposal to amend ...
Meeting Document : CCAMLR-38/27 : Author(s): Delegation of the Republic of Korea