Resultados de la búsqueda
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A spatial multi-species operating model of the Antarctic Peninsula krill fishery and its impacts on land-breeding
Abstract: An updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... . SMOM has been revised from the original version presented in Plagányi and Butterworth (2006a) in three ... OCCAM model. This modelling framework provides an example of a method for bounding some of the ... envelopes rather than in point estimate form, giving a truer reflection of the uncertainty inherent in ...
Meeting Document : WG-SAM-07/12 : Autor(es): É.E. Plagányi and D.S. Butterworth (South Africa)
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Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL
) which models the annual tag shedding (i.e. loss) rate as a constant for individual tags. The CASAL ... software applies this model correctly for fish released with a single tag but does not have the facility at ... present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ... ) and Hillary et al. (2006) to apply the square of the individual tag loss annual rate in CASAL over ...
Meeting Document : WG-SAM-11/12 : Autor(es): S.G. Candy (Australia)
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An update of the ageing program for Patagonian toothfish (Dissostichus eleginoides) at the Australian Antarctic Division, including a summary of new data available for the Integrated Stock Assessment for the Heard Island and the McDonald Islands fishery (Division 58.5.2)
) otoliths from the Heard Island and McDonald Islands fishery. With the reinitiation of this program a number ... of methodological refinements have been made to those outlined by Nowara et al. (2009), particularly ... age. These changes have contributed to increased efficiency within the program, with a greater ... capacity for ageing and at a lower cost per otolith. Greatest efficiency gains have been made in the ...
Meeting Document : WG-FSA-14/45 : Autor(es): B.M. Farmer, E.J. Woodcock and D.C. Welsford (Australia)
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Progress towards a trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
Abstract: We report on the further development of a carbon-budget trophic-model of the Ross Sea ... Ross Sea is a low primary production system, with production being localised in space and time. In the ... considered a work in progress. Overall, the model is close to balance, with total exports of organic carbon ... . The current version of the trophic model suggests that Antarctic toothfish have the potential to exert ...
Meeting Document : WG-EMM-06/14 : Autor(es): M. Pinkerton, S. Hanchet and J. Bradford-Grieve (New Zealand)
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Fish Heaven: a Monte Carlo, spatially explicit single species fishery model for the testing of parameter estimation methods
Abstract: Fish Heaven is a simple spatially explicit age structured fish model, containing the ... basic features of standard fish modeling with a number of optional extras. It was designed within an ... object oriented framework to allow for the possible extension in a number of directions. In particular it ... various plausible spatial structures of fish stock. The model has a simple age and space structured ...
Meeting Document : WG-FSA-00/36 : Autor(es): I. Ball and A. Constable (Australia)
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Reports on abundance and biological information on toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2010/11 season
Abstract: A survey was conducted in order to collect information for the stock status and various ... biological information on toothfish in Division 58.4.4a & b (Ob Lena Bank) by using a commercial bottom ... in the SSRUs were 15.3 ± 1.1 indiv. / 1,000 hooks (mean ± SE) in terms of number and 111.2 ± 11.4 kg ... sexes of D. eleginoides during the 2010/11 survey. A total of 189 individuals of toothfish with good ...
Meeting Document : WG-SAM-11/06 : Autor(es): K.Taki, T. Iwami and M. Kiyota (Japan)
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Results of a CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2013
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The ... first survey was completed in February (Hanchet al. 2012a). In this paper we provide the results of the ... second survey in the time series. The objectives of this second survey were: To carry out a longline ...
Meeting Document : WG-SAM-13/32 : Autor(es): S.J. Parker, S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and R. Sarralde (Spain)
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A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)
Abstract: Euphausia superba and Euphausia crystallorophias dominate the biomass and play a key ... role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of ... of net samplings depends on the environmental conditions. In the Ross Sea such a limitation is due ... that organisms must occur in low concentrations and echo level from a single organism must be greater ...
Meeting Document : WG-EMM-01/63 : Autor(es): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)
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Update on Patch v2: a simulation program in R for evaluating spatial management strategies to conserve structure and function of ecosystems
Abstract: Version 2 of Patch is available. Patch is a simulation program in R for evaluating ... CCAMLR Secretariat. Author(s): A.J. Constable (Australia) Title: Update on Patch v2: a simulation ...
Meeting Document : WG-SAM-10/09 : Autor(es): A.J. Constable (Australia)
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Reports on biological information of toothfish with special reference to bycatch, depredation and spawning dynamics in Division 58.4.4 a & b by Shinsei maru No. 3 during 2008–14 seasons
, depredation and spawning dynamics in Division 58.4.4 a & b during 2008-14 seasons in response to the ... method and grenadier bycatch method by Gasco et al. (2014) using two size levels of unit cell, and ... not considered to be a significant parameter for the catch rate of toothfish in the generalized linear ... method by Gasco et al. (2014) is currently rather difficult to be applied in the division because of ...
Meeting Document : WG-FSA-15/21 : Autor(es): K. Taki and T. Ichii (Japan)