Search results
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An initial analysis of the characteristics of Antarctic krill taken by the commercial fishery and Antarctic fur seals during the winters of 2002 and 2003 at South Georgia
observers that should be addressed prior to more detailed analysis, nevertheless there was considerable ... during winter. It may be appropriate to review the number of krill measured by observers in order to ... ensure that other sufficient time can be allocated to other activities, especially the assessment of by ...
Meeting Document : WG-EMM-04/62 : Author(s): K. Reid, D.J. Agnew, N.L. Warren and E. Owen (United Kingdom)
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Sampling toothfish from longlines with unequal probabilities
vital rates. To resolve this, either the probabilities need to be incorporated in the analysis of ... sampling data, or sampling effort should be proportional to catch effort. As vessels generally record the ... ; but, preferably, the observer should start as close as feasible, and not be consistently late or early ...
Meeting Document : WG-FSA-03/85 : Author(s): J.R. Ashford (USA)
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Depletion-corrected average catch: a simple formula for estimating sustainable yields in data-poor situations
biomass. The size of the windfall is expressed as being equivalent to a number of years of sustainable ... in stock biomass. The size of the windfall is expressed as being equivalent to a number of years ...
Meeting Document : WG-SAM-11/P3 : Author(s): A.D. McCall
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Echo integration in low signal to noise regimes: methods of noise estimation and removal
that the physically meaningful quantity "noise power", being the apparent received power (dB ... "noise power", being the apparent received power (dB/ 1 W) at the transducer due to noise, is used ...
Meeting Document : WG-EMM-97/74 : Author(s): Higginbottom, I., Pauly, T.
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Acoustic data analysis and models of krill spatial distribution
. The computed frequency distribution of krill biomass is bimodal and appears to be the mixture of two ... . These results of data analysis suggest that krill patch size or rather a basic swarm size should be ... should be the manifestation of the balance between the dispersion of the basic swarm units and long-range ...
Meeting Document : SC-CAMLR-VII/BG/25 : Author(s): United States of America
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Criteria for aging the otoliths of Dissostichus eleginoides from South Georgia (Subarea 48.3) and an analysis of aging precision
the equivalent region in older fish. Both aging techniques indicated D. eleginoides to be a long-lived ... fish, but C2 indicated that captured fish may be mostly young, between 3-9 years old. The low precision ... within standardized limits of variation are likely to be important. Author(s): J. Ashford (United ...
Meeting Document : WG-FSA-98/52 : Author(s): J. Ashford (United Kingdom) and S. Wischniowski (Canada)
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Changes in population size of large Procellariiformes breeding in the French sub-Antarctic islands: potential influence of southern fisheries and particularly long lining
mortality has been suspected to be the result of mortality incurred in long-line fisheries. Satellite ... Ocean populations. Potential threats from the Kerguelen Dissostichus fishery exist but can be minor if ... measures to reduce mortality continue to be enforced in the EEZ. Author(s): Henri Weimerskirch and Pierre ...
Meeting Document : WG-IMALF-94/11 : Author(s): Henri Weimerskirch and Pierre Jouventin (France)
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A REVIEW OF THE UNCERTAINTIES ASSOCIATED WITH PENGUIN POPULATION AND ABUNDANCE ESTIMATES FOR THE CCAMLR REGION
to availability of these units. Counts therefore have to be standardised prior to being summed, but the adjustment ... to availability of these units. Counts therefore have to be standardised prior to being summed, but the adjustment ...
Meeting Document : CCAMLR-IWC-WS-08/08 : Author(s): Trivelpiece, W., Fraser, B., Trathan, P., Ainley, D., Southwell, C., Bost, C., Hindell, M., Lyver, P., Ratcliffe, N., Woehler, E.
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On the consequences of differentiating between adult and sub-adult survival rates in the krill-predators model
-adult survival rate can be adjusted to ensure that the modelled predator population reflects observed ... . This solution brings with it new problems, however, in that two further parameters need to be specified ... for both these parameters, consideration needs to be given to the possibilities for qualitatively ...
Meeting Document : WG-EMM-95/39 : Author(s): Butterworth, D.S., Thomson, R.B.
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Plan of research program of the Russian Federation in Subarea 48.5 (Weddell Sea) in season 2014/2015
subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... similarity, which could be found in geographical location, bathymetric profile, currents system and follows ... . Detailed plan of fishing operations, collecting and analysis of data will be provided for the Scientific ...
Meeting Document : WG-SAM-14/07 : Author(s): Delegation of the Russian Federation