Résultats de la recherche
IMPLEMENTATION OF FOOSA (KPFM) IN THE EPOC MODELLING FRAMEWORK TO FACILITATE VALIDATION AND POSSIBLE EXTENSION OF MODELS USED IN EVALUATING KRILL FISHERY HARVEST STRATEGIES THAT WILL MINIMISE RISK OF LOCALISED IMPACTS ON KRILL PREDATORS
-structured harvest strategies for krill, has been implemented within the EPOC modelling framework. It also ... includes the methods used for implementing environmental variability, the krill population, generic ... predators, the krill fishery and the system for setting catch limits. The process of implementing FOOSA in ... different dynamics that may be present in the krill-predator-fishery system in Area 48. Some of these ...
Meeting Document : WG-SAM-08/15 : Auteur(s): A. Constable (Australia)
Results of scientific observation in Antarctic krill fishery in 2010/11: II. analysis of variability of krill size and fish by-catch
Abstract: We examined spatio-temporal variability of krill body length and number of bycatch fish ... krill length and number of bycatch fish were analyzed by using a hierarchical Bayesian model composed of ... krill length model, some parameters did not converge well in the bycatch fish model. The interaction ... between month and sub-areahas large effects on krill length. Krill length varies among cruises, but there ...
Meeting Document : WG-EMM-12/67 : Auteur(s): T. Okuda and M. Kiyota (Japan)
Intra-annual variability in the abundance of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ krill density estimates
abundance of Antarctic krill continuously between 14 October 2002 and 29 December 2005. A distinct seasonal ... pattern in krill abundance was detected that recurred consistently over all 3 years. Krill densities in ... explained 71% of the observed week-week variation. Mooring estimates of krill abundance were not ... statistically different (P>0.05) from estimates derived from standard ship-based krill surveys in adjacent ...
Meeting Document : WG-EMM-06/25 : Auteur(s): R.A. Saunders, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein, D.G. Bone and A.S. Brierley (United Kingdom)
CONDITIONING SMOM USING THE AGREED CALENDAR OF OBSERVED CHANGES IN PREDATOR AND KRILL ABUNDANCE: A FURTHER STEP IN THE DEVELOPMENT OF A MANAGEMENT PROCEDURE FOR KRILL FISHERIES IN AREA 48
Abstract: The updated version of the Spatial Multi-species Operating Model (SMOM) of krill ... , one with the time series of krill abundance fixed on input, and the other incorporating an explicit ... model of krill dynamics. Additional versions of SMOM that may need to be conditioned are discussed. In ... suggest that penguins respond sooner than other predators to decreasing levels of krill abundance. Given ...
Meeting Document : WG-EMM-08/44 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)
Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey
Abstract: Antarctic krill (Euphausia superba Dana) is a key species in the Southern Ocean ... between the acoustic scattering coefficient of krill swarms and catch, catch per unit effort (CPUE), catch ... per unit fishing area (CPUA) were studied for better understanding the feasibility of assessing krill ... higher than average catch of night trawls. The average thickness of krill swarm in the daytime was ...
Meeting Document : WG-EMM-17/44 : Auteur(s): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu
Modelling Movement of Antarctic Krill (MMAK): the importance of retention, dispersal and behaviour for krill distribution – a project update
that influence the distribution of Antarctic krill in CCAMLR Area 48, focussing in particular on the ... investigate the impact of physical and behavioural processes on the distribution of krill in this area, at ... scales relevant to the krill fishery and predators. Preliminary analysis of a 20-year time series of ... transfer to the wider Scotia Sea. Results suggest that resolving the interaction of krill with sea ice is ...
Meeting Document : WG-EMM-18/06 : Auteur(s): S.E. Thorpe, E.F. Young, E.J. Murphy, O.R. Godø and A.H.H. Renner
Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems
time krill enters the trawl mouth and the time the same krill enters the holding tanks where catch ... estimate variability in the conversion from krill holding tank volumes to krill biomass indicated that a ... reported catch time and actual catch time since the krill catch is kept in holding tanks before being ... measurements. We could then estimate a maximum residence time before the accumulated krill catch is recorded on ...
Meeting Document : WG-EMM-18/22 : Auteur(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad
Abstract: A long term study on the maturity cycle of Antarctic krill was conducted in a research ... aquarium. Antarctic krill were either kept individually or in a batch for 8 months under different ... describing seasonal cycle of krill physiology which provides a framework for future studies and highlight the ... , L. Finley, P. Cramp and S. Nicol (Australia) Title: The krill maturity cycle: a conceptual ...
Meeting Document : WG-EMM-06/23 : Auteur(s): S. Kawaguchi, T. Yoshida, L. Finley, P. Cramp and S. Nicol (Australia)
Using krill length data from fishery-dependent and fishery-independent data sources to measure changes in the Antarctic krill population structure in the Bransfield Strait
Abstract: Krill length data collected from fishery-dependent and fishery-independent data sources ... were analysed for trends in population structure. Krill length data collected by the Scheme of ... collected by different sources to gain a complete understanding of trends in krill population structure and ... dynamics for use in fisheries management. Author(s): CCAMLR Secretariat Title: Using krill length data ...
Meeting Document : WG-EMM-2019/76 : Auteur(s): CCAMLR Secretariat
Why does it necessary to consider krill flux for developing the feedback management strategy for krill fishery in the Area 48?
Abstract: The authors discussed the necessity to investigate krill flux for estimating the local ... . Estimates of krill flux factors in Subarea 48.3 based on the Soviet/Russian scientific observations from ... it necessary to consider krill flux for developing the feedback management strategy for krill fishery ...
Meeting Document : WG-EMM-15/24 : Auteur(s): S. Kasatkina and V. Shnar (Russia)