Résultats de la recherche

1. Antarctic krill and ecosystem management – from Seattle to Siena

   sustainability of harvested stocks (see Constable, 2002 – this volume). As emphasised by Agnew (1997), (ii ... models (such as those parameterised by Holt and Talbot (1978) and Sissenwine (1978)) in the management ... and is a consideration compounded by krill’s low trophic status (de la Mare, 1986b). Thus, krill ... with the ecosystem considerations prescribed by Article II of the Convention. Some key developments ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Auteur(s): Miller, D.G.M

2. Is the attempt to estimate the biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited

   was one of the first conservation measures adopted by CCAMLR. Fish biomass within a CCAMLR subarea or ... canyons are found. The large concentration of N. rossii fi shed in 1975/76 and 1977/78 by the Weser and ... adopted by CCAMLR. Fish biomass within a CCAMLR subarea or part of a subarea is commonly estimated from ... Introduction The directed fi shery for Notothenia rossii was prohibited by CCAMLR in 1985. No exploitation on ... et al., 2002). These surveys were conducted individually by the UK, Germany and the USA until the ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 141–153 : Auteur(s): Kock, K.-H., M. Belchier and C.D. Jones

3. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   strategies, including both adaptive and robust control. Adaptive control aims to reduce uncertainty by ... Doyle, 1997; Rawlings and Mayne, 2009). The management procedure approach used by fisheries ... (MPE) is a sim- ulation method that assesses the likely performance of MPs by using them to control ... specified objectives by adjusting catch or effort. MPE generally attempts to find an HCR which will make ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Auteur(s): Hill, S.L. and M. Cannon

4. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   southwest (SW) Atlantic sector is a major scale of variability, driven by sea-ice and climate effects on ... found in swarm densities Figure 1: Schematic representation of habitat volume occupied by krill. The ... found and these areas are well mapped by the fishery (Ramm et al., 2005). Both physical and biological ... sector is a major scale of variability, driven by sea-ice and climate effects on recruitment. This ... not affected by sea-ice. This survey design misses four additional com- ponents of krill habitat. The ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Auteur(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

5. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

   ). Lithodid crabs also constitute a considerable part of the by-catch associated with pot fishing for ... on adult growth, reproduction and larval development have been conducted by the British Antarctic ... . anemerae and L. murrayi were first described at South Georgia by Purves et al. (2003) following the ... depths largely unsampled by the exploratory fisheries. Despite some overlap in the depth distribution ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Auteur(s): Belchier, M., T. Peatman and J. Brown

6. Acoustic data analysis and models of krill spatial distribution

   predicted by Kolmogorov (1941) for the inertial subrange of turbulence, and also the slope of -2 for ... chlorophyll may be interpreted by the turbulence model with a slight modification by biological activities ... variability at small scales. Although krill distribution is influenced by large scale physical processes ... distribution patterns in different areas. Acoustic data provided by M.C. Macaulay were used in our spectral ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Auteur(s): Morin, A., A. Okubo and K. Kawasaki

7. The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery

   Adélie penguins, determined by satellite tracking, at seven widely-spaced breeding colonies along the ... . Thomson Department of Zoology, University of Cape Town Rondeboscl~ 7700, South Africa Abstract This ... paper presents a summary of the foraging locations of Adelie penguins, determined by satellite tracking ... investigated by Agnew (1992) based on the time penguins are away from their colonies and their average ... swimming speed as reported by, for example, Lishman (1985) and undertaken to determine the foraging ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Auteur(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson

8. Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region

   were generalised Bayesian population models and were optimised by fitting to fishery observations ... scenarios suggested that the current single-area stock assessment is biased low by 19–43%. File:  06 Mormede ... models were generalised Bayesian population models and were optimised by fitting to fishery observations ... scenarios suggested that the current single-area stock assessment is biased low by 19–43%. Mormede et ... . Estimates of stock status were mostly informed by the tag-release and tag-recapture data. An important ... region is constrained by areal closures (approxi- mately 70% of the total region), local area catch ...

   Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Auteur(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker

9. Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey

   approach is extended further so as to incorporate most of the amendments specified by the Third and Fourth ... . Three possible fishing seasons are considered. The model extensions requested by the Third Meeting make ... fishing mortality, as specified by the Fourth Meeting, results in marked reductions in the probabilities ... Applied Mathematics, University of Cape Town Rondebosch 7700, South Africa K. Hiramatsu National ... incorporate most of the amendments specified by the Third and Fourth Meetings of the Working Group on Krill ... considered. The model extensions requested by the Third Meeting make little difference to the results of ... imposition of an upper bound of 1.5 on the effective annual fishing mortality, as specified by the Fourth ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Auteur(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew

10. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

    subdivisions, based on remote-tracking data contributed to the Global Procellariiform Tracking Database by ... including areas managed by CCSBT, ICCAT, IOTC and WCPFC. Priority gaps in current tracking data are ... Procellariiform trACkinG dAtAbAse BirdLife International (prepared by C. Small and F. Taylor) Wellbrook Court ... -tracking data contributed to the Global Procellariiform Tracking Database by multiple data holders. The ... albatrosses and petrels of regions north of the CCAMLR boundaries, particularly including areas managed by ... annually by longline fishing (Brothers, 1991; Cherel et al., 1996; Schiavini et al., 1998; Nel et al ...

    Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)

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