Resultados de la búsqueda
-
Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3
Paper Title: Towards the development of a management plan for mackerel icefish (Champsocephalus ... years of poor krill availability. Thus natural ortality of C. gunnari may, in some years, increase by a ... outlines a scheme which would use information from studies on krill and predators undertaken as part of the ... . Full implementation of such a scheme would require greater knowledge of quantitative aspects of food ... DEVELOPMENT OF A MANAGEMENT PLAN FOR THE MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) IN SUBAREA 48.3 D.J ... of poor krill availability. Thus natural mortality of C. gunnari may, in some years, increase by a ... outlines a scheme which would use information from studies on krill and predators undertaken as part of ... . gunnari. Full implementation of such a scheme would require greater knowledge of quantitative aspects ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Autor(es): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes
-
Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
Paper Title: Bias in the estimation of krill yield from using a deterministic formulation of the ... model as a basis for setting catch limits in the krill fishery, while the GYM is used for assessing ... effects of a specified long-term annual yield on (i) the probability of the spawning stock being reduced ... below a set proportion of the median pre-exploitation spawning biomass during a projection trial and (ii ... ESTIMATION OF KRILL YIELD FROM USING A DETERMINISTIC FORMULATION OF THE MEDIAN UNEXPLOITED SPAWNING BIOMASS ... the stock being assessed. CCAMLR currently uses results from the krill yield model as a basis for ... fisheries but can also be used for krill. The decision rules relate to the effects of a specified long-term ... annual yield on (i) the probability of the spawning stock being reduced below a set proportion of the ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Autor(es): Constable, A.J. and W.K. de la Mare
-
A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
Paper Title: A first attempt at an assessment of the Patagonian toothfish (Dissostichus ... reviewed briefly. It is characterised by very large illegal catches and a sharply declining longline catch ... -per-unit-effort (CPUE) trend. Application of a simple age-structured production model (ASPM) provides ... a robust indication that the spawning biomass has been depleted to, at most, a few percent only of ... , Vol. 9 (2002): 11–32 11 A FIRST ATTEMPT AT AN ASSESSMENT OF THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ... ELEGINOIDES) RESOURCE IN THE PRINCE EDWARD ISLANDS EEZ A. Brandão and D.S. Butterworth Marine Resource ... is characterised by very large illegal catches and a sharply declining longline catch-per-unit ... -effort (CPUE) trend. Application of a simple age-structured production model (ASPM) provides a robust ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Autor(es): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller
-
Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
Paper Title: Calibration of an acoustic echo-integration system in a deep tank, with system gain ... outlines the theory and procedures for calibrating an echo integration acoustic system with a standard ... sphere. It presents the results of an extensive calibration of a Simrad EK500 scientific echosounder with ... a 120 kHz split-beam transducer in a refrigerated 10 m deep tank. Calibration parameters are studied ... -INTEGRATION SYSTEM IN A DEEP TANK, WITH SYSTEM GAIN COMPARISONS OVER STANDARD SPHERE MATERIAL, WATER ... procedures for calibrating an echo integration acoustic system with a standard sphere. It presents the ... results of an extensive calibration of a Simrad EK500 scientific echosounder with a 120 kHz split-beam ... transducer in a refrigerated 10 m deep tank. Calibration parameters are studied in relation to sphere ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Autor(es): Demer, D.A. and R.P. Hewitt
-
A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
Paper Title: A possible framework in which to consider plausible models of the Antarctic marine ... ecosystem for evaluating krill management procedures Abstract / Description: CCAMLR is developing a ... management procedure for the krill fishery, including the evaluation of candidate management procedures in a ... simulation framework, using plausible models of the Antarctic marine ecosystem. This paper develops a ... (2005): 99–117 99 A POSSIBLE FRAMEWORK IN WHICH TO CONSIDER PLAUSIBLE MODELS OF THE ANTARCTIC MARINE ... – andrew.constable@aad.gov.au Abstract CCAMLR is developing a management procedure for the krill fi shery ... , including 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 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 99–117 : Autor(es): Constable, A.J
-
A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
Paper Title: A potential feedback approach to ecosystem-based management: Model Predictive ... Control of the Antarctic krill fishery Abstract / Description: CCAMLR aims to develop a feedback approach ... whether a feedback approach is likely to achieve the multiple objectives that EBM implies in the complex ... Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... CCAMLR aims to develop a feedback manage- ment approach for the Antarctic krill fishery in the Scotia ... a potential catch limit equivalent to 7% of current global fisheries landings (Hill, 2013a ... - ment derive from control theory (Cunningham and CCAMLR Science, Vol. 20 (2013): 119–137 119 A ... aims to develop a feedback approach to aid ecosystem-based management (EBM) of Antarctic krill ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon
-
A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region incorporating multi-year mark-recapture data
Paper Title: A stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in the Ross ... hence a multi-year mark-recapture tagging program was initiated by New Zealand fishing vessels in 2001 ... abundance from a single release and subsequent recapture events. An integrated Bayesian stock assessment ... showed the data selection provided a precautionary estimate of biomass, and that these estimates were ... distribution is circumpolar, although D. mawsoni have a more southern distribution and are found in latitudes ... ) is defined to include the area between 150°E and 150°W. A distinct fishery also operates further ... (2014): 39–62 39 A stock Assessment model of AntArctIc toothfIsh (Dissostichus mawsoni) In the ross ... seA regIon IncorporAtIng multI-yeAr mArk-recApture dAtA S. Mormede and A. Dunn National ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 39–62 : Autor(es): Mormede, S., A. Dunn and S.M. Hanchet
-
The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
Paper Title: The sensitivity of multiple output statistics to input parameters in a krill ... –predator–fishery ecosystem dynamics model Abstract / Description: There is a global need to develop ... stock or the fishery. Output statistics were most sensitive to a parameter controlling predator ... recruitment through pre-recruit mortality. A parameter mediating the effect of a forcing function on krill ... Watters et al. (2013) describe a spatially resolved stochastic simulation model representing one prey ... and target species, its natural predators and a fishing fleet. Its authors developed this model to ... directly important to the focal species and therefore resembles a minimum realistic model (Plagányi ... means a mathematical representation of a hypothesis about ecosystem dynamics consisting of a model and ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Autor(es): Hill, S.L. and J. Matthews
-
A hybrid approach to acoustic classification and length estimation of krill
Paper Title: A hybrid approach to acoustic classification and length estimation of krill Abstract ... considered. A euphausiid aggregation is represented by a three-dimensional probabilistic vector whose ... individually for each component of a vector, using classical Bayesian techniques. Classification probabilities ... is derived from a fluid-sphere model. The effectiveness of the method is demonstrated by comparing ... . 11 (2004): 33–58 33 A HYBRID APPROACH TO ACOUSTIC CLASSIFICATION AND LENGTH ESTIMATION OF KRILL ... problem of acoustically identifying and estimating the sizes of two euphausiid species is considered. A ... euphausiid aggregation is represented by a three-dimensional probabilistic vector whose components are the ... component of a vector, using classical Bayesian techniques. Classifi cation probabilities are derived by ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Autor(es): Azzali, M., I. Leonori and G. Lanciani
-
Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian toothfish fishery
Paper Title: Significant conservation benefits obtained from the use of a new fishing gear in the ... Chilean Patagonian toothfish fishery Abstract / Description: A new fishing technique, adapted from the ... modified artisanal system, which includes a net sleeve that is placed on secondary vertical lines, has ... zero in 2006; there was also a reduction in depredation of the catch from a maximum of 5% in 2002 to a ... Significant conServation benefitS obtained from the uSe of a neW fiShing gear in the chiLean Patagonian ... , Chile Abstract A new fishing technique, adapted from the artisanal trotline fishery for Patagonian ... toothfish (Dissostichus eleginoides) in Chile is described. The modified artisanal system, which includes a ... number of seabirds killed in 2002 was 1 542 compared to zero in 2006; there was also a reduction in ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 79–91 : Autor(es): Moreno, C.A., R. Castro, L.J. Mújica and P. Reyes