Search results
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
, while the second is a generalised yield model. The decision rules relate to the effects of a specified ... long-term annual yield (γ) on (i) the probability of the spawning stock being reduced below a set ... proportion of SB0 during a projection run (probability of critical depletion) and (ii) the median status of ... the spawning stock (as a proportion of SB0) at the end of the projection run (level of escapement ...
Meeting Document : WG-EMM-97/45 : Author(s): de la Mare, W.K., Constable, A.J.
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An overview of a large ecosystem survey of the southwest Indian Ocean sector of the Southern Ocean (CCAMLR Division 58.4.2)
, which was designed around an acoustic biomass survey for krill and a large-scale oceanographic survey ... . The survey is intended to produce a new estimate of krill biomass (B0) for this Division so that a ... revised precautionary catch limit can be established by CCAMLR. The survey utilised a standardised design ... adjacent CCAMLR Division 58.4.1 which collected information on a wide range of ecological parameters. The ...
Meeting Document : WG-EMM-06/15 : Author(s): S. Nicol, S. Kawaguchi, T. Jarvis, G. Williams, N. Bindoff, D. Thiele (Australia), J. Schwarz (Germany), A. Davidson, S. Wright, J. Gedamke and P. Thompson (Australia)
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Detection of systematic change in Adélie penguin foraging trip duration: consequences of high inter-annual variability and usefulness of ice cover as a covariate
Abstract: Power analyses were carried out using a 12 year data set from the Béchervaise Island ... change were investigated: 1) change occurring at a constant rate after a certain point in time and 2) a ... the latter form could be more quickly and powerfully detected at a range of effect sizes than could ... three foraging trips each were required to detect a 35% step increase in foraging trip duration after ...
Meeting Document : WG-EMM-05/22 : Author(s): J. Clarke, C. Southwell and L.M. Emmerson (Australia)
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
Abstract: CCAMLR requires an assessment method for recommending a subdivision of the krill catch ... agreed workplan for developing a management procedure includes the evaluation of candidate management ... procedures in a simulation framework, using plausible models of the Antarctic marine ecosystem. This paper ... develops a framework for erecting such models. It is divided into three main parts, addressing different ...
Meeting Document : WG-EMM-04/24 : Author(s): A. Constable (Australia)
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A PROPOSED MANAGEMENT PROCEDURE FOR THE TOOTHFISH (Dissostichus eleginoides) RESOURCE IN THE PRINCE EDWARD ISLANDS VICINITY
Pessimistic” and a “Pessimistic” current status for the toothfish resource in the Prince Edward Islands region ... . These models are used for trials of a candidate Management Procedure (MP) which could provide future TAC ... length of the catches made. A specific MP, with its associated control parameter values, is proposed for ... economic viability of the fishery, the choice of control parameter values focused primarily on a reasonable ...
Meeting Document : WG-SAM-08/11 : Author(s): A. Brandão and D.S. Butterworth (South Africa)
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Research plan for the exploratory longline fishery for Dissostichus spp. in 2012/13 in Division 58.4.3a (this is a revision of WG-SAM-12/14)
Abstract: In 2011/2012, a French vessel conducted its first exploratory fishing campaign in ... division 58.4.3a. In order to achieve a robust stock assessment that would provide advice on catch limits ... years. This paper is a revised proposal of WG-SAM-12/14 encouraged by 2012 SAM working group for a ... detailed catch, effort and biological data with a nearly same survey design as in the 2012. It will include ...
Meeting Document : WG-FSA-12/29 : Author(s): A. Rélot-Stirnemann (France)
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Report on the transfer of a crew member from the vessel Globalpesca I during exploratory fishing in the area of CCAMLR
nave de pabellón chileno “Globalpesca I” a otra de pabellón de Togo, en el área de la Convención. El ... transbordado desde la nave chilena “Globalpesca I” a la nave “Sargo” de pabellón de Togo. Dado que la ... completaba su marea y el puerto más cercano se encontraba a 20 días de navegación, el capitán del ... “Globalpesca I” decidió transbordar al tripulante a una nave que se dirigía a puerto. Todos estos antecedentes ...
Meeting Document : CCAMLR-XXV/BG/25 : Author(s): Delegation of Chile
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A new bathymetric compilation for the South Orkney Islands, Antarctic Peninsula (49°–39°W to 64°–59°S): insights into the glacial development of the continental shelf
Abstract: We present a new, high resolution (300 m) bathymetric grid of the South Orkney Islands ... and surrounding continental shelf, northeast of the Antarctic Peninsula. The new grid, derived from a ... information for a range of scientific applications and end users including oceanographers, glacial modellers ... drained a former ice cap centred on the South Orkney Islands. During previous glacial periods, grounded ...
Meeting Document : WG-EMM-14/P01 : Author(s): W.A. Dickens, A.G.C. Graham, J.A. Smith, J.A. Dowdeswell, R.D. Larter, C.-D. Hillenbrand, P.N. Trathan, J.E. Arndt and G. Kuhn
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Elaborating a representative system of marine protected areas in eastern Antarctica, south of 60°S
conservation of marine biodiversity by 2012. A representative system of marine protected areas (RSMPA) will be ... one that (i) provides a spatial estate of the smallest area sufficient to satisfy the principles of ... will be increased if it (iv) can act as a source for maintaining biodiversity in areas outside of the ... system, (v) can act as a reference for natural variability and change, and (vi) provides for ecosystem ...
Meeting Document : WG-EMM-10/26 : Author(s): A.J. Constable, B. Raymond, S. Doust, D. Welsford and K. Martin-Smith (Australia)
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Results of a research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea, February 2012
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... recruitments from a well-designed survey could be a useful input into the Ross Sea stock assessment model and ... endorsed a proposal to carry out this work once the fishery had closed at the end of the 2011/12 season ... . The survey had two main objectives: (i) To establish the feasibility of developing a time series of ...
Meeting Document : WG-SAM-12/29 : Author(s): S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and H.-S. Jo (Republic of Korea)