Search results
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Assessment of the analysis of anomalous CPUE data from data-poor exploratory fisheries
high CPUE for Dissostichus spp. revealed by several vessels in the Subareas 58.4.1, 58.4.2 and 48.6. A ... number of objective and subjective factors, which can have a principal effect on results of the analysis ... of anomalous high CPUE, are described. The opinion has stated that a criterion of anomalous CPUE ... should be specified under condition of CPUE standardization of different types of longlines. There is a ...
Meeting Document : WG-SAM-13/16 : Author(s): V.A. Tatarnikov, A.F. Petrov and I.I. Gordeev (Russia)
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White-chinned petrel incidental mortality event in the Subarea 48.3 Patagonian toothfish fishery during the season extension period in the 2013/14 season
Abstract: During the 2014 experimental season extension in CCAMLR sub-Area 48.3 a single line ... for over 10 years. The circumstances associated with the event were investigated and a review of ... seabird mortality in the fishery undertaken. The mortality event occurred on a “Spanish” system longline ... partly set after Nautical Twilight other factors may have contributed to this event. A review of ...
Meeting Document : WG-FSA-14/28 : Author(s): M.A Collins, M. Soffker, C. Darby, K. Ross and P.N. Trathan (United Kingdom)
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Autoliners and seabird by-catch: do line setters increase the sink rate of integrated weight longlines?
by expediting gear sink rates. A trial was conducted in the Ross Sea in 2007 to determine the ... magazines of line set with and without a line setter using a paired treatment design. Sink rates of ... longlines set with and without a line setter were identical, including in the first few metres of the water ... confer no sink rate advantage to IW longlines. Longlines deployed with a line setter enter the water ...
Meeting Document : WG-FSA-07/13 : Author(s): G. Robertson (Australia), J. Williamson, M. McNeill (New Zealand), S. Candy (Australia) and N. Smith (New Zealand)
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2006 assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
Butterworth (2005) that permitted annual fluctuations about a deterministic stock-recruitment relationship is ... become available for the years 2005 and 2006. The assessment allows for a second fleet to accommodate ... data from a pot fishery that operated in 2004 and 2005. Updated biological parameter values for Subarea ... prudent to restrict annual legal catches to 500 tonnes or less, unless a large proportion of the catch is ...
Meeting Document : WG-FSA-06/58 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
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Geographical differences in the condition, reproductive development, sex ratio, and length distribution of Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (CCAMLR Statistical Subarea 88.1)
Abstract: A number of morphological and reproductive measurements made seasonally on Antarctic ... differences in a number of indices from toothfish found on the Ross shelf proper, as distinct from those ... part of the Ross Sea showed that this component of the population had a unimodal length distribution at ... a consistent peak over all sampling seasons in comparison with the southern group in which the ...
Meeting Document : WG-FSA-05/52 : Author(s): J.M. Fenaughty (New Zealand)
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PREDICTING THE VULNERABILITY OF BRYOZOANS AND SPONGES TO DISTURBANCE USING LIFE-HISTORY CHARACTERISTICS
form important biogenic habitat in the Southern Ocean. Data were extracted from a global database of ... life-history characteristics. Bryozoans showed a strong negative relationship between growth rate and ... age and a strong positive relationship between growth rate and temperature. A multiple regression ... disturbance. Demosponges showed a strong positive relationship between maximum size and age while there were ...
Meeting Document : WS-VME-09/12 : Author(s): Martin-Smith, K.
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Performance of an acoustic sonde design
is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... . Here, a specific design is evaluated: ten more or less standard, approximately logarithmically spaced ... frequencies are chosen. Each frequency represents the resonant condition of a circular piston transducer with ... strength is treated as a parameter, with investigated values from-130 to-50 dB. Performance assessment for ...
Meeting Document : WG-EMM-95/09 : Author(s): Foote, K.G.
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Extending ecological monitoring to underpin the development of feedback management approaches for the Antarctic krill fishery
Abstract: CCAMLR has agreed to consider and develop a feedback management approach for the krill ... fishery. Such a management approach may also require the development of a new or extended monitoring ... of the issues associated with the development of a new monitoring programme, outlining one possible ... that it can agree a way forward and make best use of the recently established CEMP Fund. Author(s ...
Meeting Document : WG-EMM-12/04 : Author(s): P.N. Trathan (UK), H.J. Lynch (USA), C. Southwell (Australia), P.T. Fretwell (UK), G. Watters (USA) and N. Ratcliffe (UK)
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An initial analysis of data provided from the deployment of scientific observers in the krill fishery
Abstract: An analysis of the observer data provided from the krill fishery was undertaken using a ... range of complementary methods of data quality control and variance investigation. A sample pooling ... scales and indicated that krill hauled in a given month/season/area were similar enough to be pooled to ... statistically significant and a made a substantial contribution to the overall random variation. Recommendations ...
Meeting Document : WG-EMM-12/60 : Author(s): S. Thanassekos (CCAMLR Secretariat), S. Candy (Australia), E. Appleyard (CCAMLR Secretariat), S. Kawaguchi (Australia) and K. Reid (CCAMLR Secretariat)
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Standardisation of commercial CPUE
krill. A model for standardisation of fishing power for individual vessels in a commercial fishing fleet ... space, and their fishing power relative to a standard vessel is calculated. The model is applied to a ... comparisons required and standard vessel. Author(s): A. Salthaug and O.R. Godø Title: Standardisation of ...
Meeting Document : WG-SAM-15/P01 : Author(s): A. Salthaug and O.R. Godø