Search results
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Automated data processing using Echoview
Abstract: Increasing volumes of acoustic data are being collected which necessitates a ... reappraisal of many of the current methods for data processing and analysis. For some acoustic data sets ... manual processing is no longer an option; the large size of the data set is preventing analysis. This ... document provides an overview of an automated procedure for processing acoustic data that is illustrated ...
Meeting Document : SG-ASAM-15/01 : Author(s): M.J. Cox (Australia), G. Skaret (Norway), L.-M.K. Harrison and R. Harcourt (Australia)
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Research and monitoring to support an MPA in the Ross Sea Region
research pursuant to the specific objectives of the MPA; (b) other research consistent with the specific ... objectives of the MPA; and/or (c) monitoring of the degree to which the specific objectives of the MPA are ... seek comments from the WG-EMM both on the contents and structure of our draft. Indeed, this draft ... developing such plans. Although our draft is developed from the perspective of supporting an MPA like that ...
Meeting Document : WG-EMM-12/46 : Author(s): G.M. Watters and C.S. Reiss (USA)
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
local areas. Nine alternative methods of determining subarea or local area krill catch limits are ... considered, 2) the cost of data collection, 3) the reliability of required information, 4) the ease of ... alternative. The probability of adverse impact on dependent species is minimized when a high amount of ... models include large amounts of biological information, but may not be practical in the near future ...
Meeting Document : WG-KRILL-92/16 : Author(s): G. Watters and R.P. Hewitt (USA)
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Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 to 48.4 using available data
Abstract: We present a novel index of Antarctic krill biomass in CCAMLR subareas 48.1 to 48.4 ... . The index also suggests that realised exploitation rates were below 0.5% (i.e. catch was <0.5% of ... also suggest that exploitation rates are low and that there is no evidence of a systematic change in ... . It also suggests that the catch levels seen in the first decade of the 21st century are unlikely to ...
Meeting Document : WG-EMM-15/28 : Author(s): S. Hill, A. Atkinson, C. Darby, S. Fielding (United Kingsom), B. Krafft, O.R. Godø, G. Skaret (Norway), P. Trathan, J. Watkins (United Kingdom)
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Marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1994/95
Abstract: This report describes and quantifies the occurrence of marine debris and fishing gear ... number of plastic debris items and fishing hooks and lines found. Although this result is encouraging ... of the very low breeding numbers of mollymawks at Bird Island in 1994/1995 and, second, because the ... 1994/1995 commercial fishery around South Georgia did not start until March 1995, the end of the data ...
Meeting Document : SC-CAMLR-XIV/BG/09 : Author(s): Delegation of the United Kingdom
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Steepness for Antarctic toothfish (Dissostichus mawsoni) based on life history
Abstract: Although steepness is typically considered a convenient re-parametrization of a stock ... -recruitment relationship, it is deeply rooted in the biology of each species. Furthermore, specifying ... points that are commonly used in fisheries management. Thus, one cannot pick an arbitrary value of ... steepness in a stock assessment. We take the first step towards a consistent treatment of steepness for ...
Meeting Document : WG-FSA-14/32 : Author(s): M. Mangel, J. Brodziak and G.M. Watters (USA)
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ADÉLIE PENGUIN SURVIVAL: AGE STRUCTURE, TEMPORAL VARIABILITY AND ENVIRONMENTAL INFLUENCES
Abstract: The driving factors of survival, a key demographic process, have been particularly ... what environmental features they are most likely to respond to. Here we examine the influence of ... environmental fluctuations, broad climatic conditions and the success of the breeding season prior to winter on ... annual survival of an Adélie penguin population using mark-recapture models based on penguin tag and ...
Meeting Document : WG-EMM-11/P4 : Author(s): L. Emmerson and C. Southwell
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in SSRU 882E including data from the 2005/06 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... in a slightly higher estimate of initial biomass than in 2005, though this was mostly due to a ... different assumption of the level of natural mortality (M=0.13 y-1), and the revised length-weight and ... information on stock size, but none of the data sets had much information about the maximum size of the stock ...
Meeting Document : WG-FSA-06/48 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Methodology for automated spatial sea ice summaries in the Southern Ocean
Abstract: Sea ice is recognised as a core driver of both ecosystem dynamics and fishery ... dynamics of sea ice in a target location for a specified period, and a temporal view is used to ... during historical fishing events. The distribution of local ice concentration at the time of each fishing ... relationship between sea ice concentration and fishing. Although more than 85% of fishing events occurred in ...
Meeting Document : WG-FSA-14/54 : Author(s): S.J. Parker, S.D. Hoyle, J.M. Fenaughty and A. Kohout (New Zealand)
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Seabird avoidance measures for small Alaskan longline vessels
Abstract: Given the lack of information on appropriate seabird avoidance measures for small ... capability of these vessels to deploy streamer lines and/or buoy lines according to performance standard ... guidelines. Vessel speed was found to be a primary determinant of both the distance astern that longline ... hooks were accessible to surface foraging seabirds, and the performance standards of streamer lines ...
Meeting Document : WG-FSA-05/36 : Author(s): E.F. Melvin and M. Wainstein (USA)