Resultados de la búsqueda
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
Abstract: A new method for estimating illegal fishing effort is put forward. The results from ... is the prevention/detection problem, in which the greater the number of detections for a given level ... a negative correlation between the amount of fishing and the estimated amount of fishing, for a ... results that have a degree of legitimacy. However, the range of actual fishing (in the simulation data ...
Meeting Document : WG-FSA-04/63 : Autor(es): I. Ball (Australia)
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Beach debris survey – Signy Island, South Orkney Islands 2002
categories. A total of 39 items weighing 25.47kg were collected. The number of items found was the largest ... packaging bands (eight) from the total recorded the previous season (1), a change in what has otherwise been ... a declining trend since 1993/94. Plastic waste was predominant, as in previous seasons, making up71 ... of waste recorded at Signy Island has shown a reverse in what has otherwise been a declining trend ...
Meeting Document : SC-CAMLR-XXI/BG/05 : Autor(es): Delegation of the United Kingdom
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Stock assessment of the Patagonian toothfish, Dissostichus eleginoides, harvested by the French fishery at Kerguelen Islands (Division 58.5.1 of the CCAMLR)
Abstract: A stock assessment of the Patagonian toothfish (Dissostichus eleginoides) at Kerguelen ... unit effort of the commercial fishery, tagging survey, sample size frequencies… CASAL is a simple ... population-modeling tool, applied to a single area and based on sex combination. The spatial complexity of ... than 1,500m. Commercial catches are integrated in the model by CCAMLR season. A weighted combination of ...
Meeting Document : WG-FSA-11/28 : Autor(es): A. Relot-Stirnemann (France)
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Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management
Abstract: The South Georgia region supports a large biomass of krill that is subject to high ... interannual variability. The apparent lack of a locally self-maintaining krill population at South Georgia ... with krill population size structure over the same period from predator diet data, were used with a ... 2 years; in the latter there was evidence that krill recruitment was delayed by several months. A ...
Meeting Document : WG-EMM-10/P08 : Autor(es): K. Reid, J.L. Watkins, E.J. Murphy, P.N. Trathan, S. Fielding and P. Enderlein
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Spatio–temporal dynamics of Antarctic krill fishery: identification of fishing hotspots
Abstract: Antarctic krill is a key species in the Southern Ocean food web and is also the target ... of the greatest fishery in Antarctic waters. Management of the fishery is based on a precautionary ... ). Here we present a novel analysis to identified fishing grounds, using statistical analysis of hotspots ... , in this case, fishing hotspots (FH), combined with a temporal analysis to assess persistence of these ...
Meeting Document : WG-EMM-16/52 : Autor(es): F. Santa Cruz, B. Ernst and J.A. Arata
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Mapping Application for Penguin Populations and Projected Dynamics (MAPPPD): Data and tools for dynamic management and decision support
Abstract: Adaptive feedback management is a core component of the ecosystem based management ... Projected Dynamics (MAPPPD) is a web-based, open access, decision support tool that would greatly assist ... ) for the region south of 60° S. A Bayesian population model integrates the available data to develop ... multiple sites to obtain abundance estimates over any user-defined area of interest. A front-end web ...
Meeting Document : WG-EMM-16/P08 : Autor(es): G.R.W. Humphries, C. Che-Castaldo, R. Naveen, M. Schwaller, P. McDowall, M. Schrimpf and H.J. Lynch
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USING ECOSYSTEM STRUCTURE TO IDENTIFY FINER-SCALE SSMUS FOR OCEANIC AREAS IN SUBAREAS 48.1 TO 48.3
Abstract: One of the main issues in the management of the krill fishery is finding a spatial ... . This requires a framework of spatial areas over which catches can be subdivided. WG-EMM has devised an ... structure of the ecosystem. This framework is hierarchical. It recognises a distinction between coastal ... oceanic SSMUs. A more detailed application of knowledge about ecological structure is likely to allow more ...
Meeting Document : WG-EMM-11/18 : Autor(es): S.L. Hill and J. Silk (UK)
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–13
models were examined including an update of the 2011 base case (R1), a model using the revised data ... selection method, new maturity ogive, and new data weighting method (R2), and a model which used a logistic ... profiles suggest that the tag recapture data from the last few years tend to push the model toward a higher ... SSRU88.1K which has a comparably high biomass but a shorter catch history (therefore fewer tags available ...
Meeting Document : WG-FSA-13/51 : Autor(es): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
whale, which had not been exploited on a large scale. A review of the scientific information in East ... minke whale, resulting in a decreasing trend in the age at sexual maturity of this species between ... approximately 1940 and 1970. A low age at sexual maturity favored an increase in the recruitment rate and total ... population size in a similar period. The evidence available since the 1980’s showed a sharp increase in the ...
Meeting Document : WG-EMM-16/64 : Autor(es): Y. Fujise and L.A. Pastene
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Report on attendance at the Sixth Meeting of the Committee for Environmental Protection Under the Madrid Protocol
issues of relevance to SC-CAMLR are: (a) The CEP again addressed the issue of establishing “Specially ... (with those organizations) to seek a common approach as to how special protection for species in the ... of this Annex, no native marine species shall be designated as a Specially Protected Species without ... a result all protected areas must be reviewed and revised management plans for each Specially ...
Meeting Document : CCAMLR-XXII/BG/11 : Autor(es): Chair of the CCAMLR Scientific Committee