Search results
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Leslie analyses of commercial snow crab trap data: a comparative study of catchability coefficients
Abstract: If we could determine the relationship between catch rates in a trap survey and ... absolute population size, then we could estimate the standing stock of snow crabs before the fishing season ... from a survey conducted with traps. One way to calibrate the catch rates is to examine available ... historical Leslie analyses of commercial catch data obtained over several years and quantify the relationship ...
Meeting Document : WS-CRAB-93/13 : Author(s): J.M. Hoenig, E.G. Dawe, D.M. Taylor, M. Eagles and J. Tremblay (USA)
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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 ... tungsten carbide with 6% cobalt binder. Theoretical target strengths are computed for each sphere for the ... reported measurement conditions for a series of cases in which single vibration modes remain unexcited. The ...
Meeting Document : WG-EMM-96/46 : Author(s): Foote, K.G.
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A fish stock assessment survey design for Subarea 48.1
Abstract: There is a lack of information regarding the abundance of exploitable finfish in ... the Working Group on Fish Stock Assessment to assess the stocks in this region and assist the ... Scientific Committee in giving management advice to the Commission. A stratified random survey is proposed ... ; the strata correspond to depth ranges (stratum 1: 50-150 m; stratum 2: 151-250 m; stratum 3: 251-500 m ...
Meeting Document : WG-FSA-92/07 : Author(s): G. Watters (USA)
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Application of continuous time Markov chains to modelling animal movement: estimation of movement rates and retention times for Patagonian toothfish
Abstract: The study of animal movement and distribution has been a central focus in ecology since ... the inception of the science. However, continuous-time, discrete state models have received relatively ... , including an inferential framework which can accommodate heterogeneous sampling effort. We explore the ... apply the model to estimate the equilibrium distribution of Patagonian toothfish in the region around ...
Meeting Document : WG-FSA-SAM-06/16 : Author(s): C. Wilcox, M. Bravington and D. Peel (Australia)
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Using vessel acoustics to detect diving patterns of krill foraging predators automatically: Development of a novel method for quantifying impact of krill fishing on seals and penguins
Abstract: The aim of this work was to assess the possibilities of automatically generating a ... of diving predators in the data is feasible. A relatively low detection probability of our algorithms ... compared to the manual detections, suggest that there is significant room for improvement. Given the ... caveats of an imperfect methodology, the results document the possibilities to automatically extract, with ...
Meeting Document : WG-EMM-15/25 : Author(s): T.A. Klevjer, O.R. Godø and B. Krafft (Norway)
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Reflection Paper on a Proposal for a CCAMLR Weddell Sea Marine Protected Area (WSMPA)
Members on a proposal for the establishment of a marine protected area in the Weddell Sea (Weddell Sea ... Marine Protected Area, WSMPA). Intersessional discussions have revealed the need for further reflection ... submitted to the CCAMLR's Commission and Scientific Committee for decision. To his end, the aim of the ... current paper is to obtain advice from CCAMLR Members on some relevant matters highlighted in the paper ...
Meeting Document : CCAMLR-XXXIV/BG/37 : Author(s): Delegation of the European Union and its Member States
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Domain 1 Marine Protected Area Preliminary Proposal – PART B: Conservation objectives
Abstract: This report summarizes the results of a series of international workshops specifically ... develop to assist in the Domain 1 MPA planning process, including the 2012- First International Workshop ... held in Valparaiso, Chile, (WG-EMM 12/69); the 2013 – Binational Workshop (Chile-Argentina) held in La ... Serena, Chile (WG-EMM 14/40), the 2015- Second International Workshop for identifying Marine Protected ...
Meeting Document : WG-EMM-17/24 : Author(s): Delegations of Argentina and Chile
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Enhancing CCAMLR performance
Abstract: CCAMLR has a history of leadership in conservation and management, yet the outcomes of ... recommends that as CCAMLR reviews the outcomes of the second Performance Review, it also considers how to ... implement outstanding recommendations from the first Performance Review. Implementation should take into ... account recommendations on the same issues from the second Performance Review as well as recent CCAMLR ...
Meeting Document : CCAMLR-XXXVI/BG/28 : Author(s): Submitted by ASOC
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Setting management goals using information from predators
be set for higher trophic levels – such as marine mammals, birds and fish. It briefly explores the ... general characteristics of objectives for higher trophic levels within the context of ecosystem-based ... management, noting that the emphasis for managing the effects of human activities on higher trophic levels is ... biased towards fisheries-based approaches rather than approaches that take into account the maintenance ...
Meeting Document : WG-EMM-07/P7 : Author(s): A. Constable (Australia)
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Estimates of bird by-catch by IUU vessels in Subarea 48.3, 1998–2001
Abstract: Estimates of bird catches by IUU fishing made using the new method presented by Agnew ... and Kirkwood last year (WG-FSA-02/4 & 5) are updated to take account of the comments of the ... working group. Last year we suggested that the Isabel data from 1997 were rather atypical of bird catch ... rates in the illegal fishery, and that these were more likely to be similar to the bird catch rates made ...
Meeting Document : WG-FSA-03/56 : Author(s): D.J. Agnew (United Kingdom)