Résultats de la recherche
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)
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)
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
“Sailbuoy for krill” – a concept for autonomous commercial and scientific monitoring of the krill fishing in Antarctica
Abstract: Science based management of krill suffers from limitation of time-space information in ... – science partnership in collecting environment and krill distribution data independent of vessel ... survey krill hotspots (in areas that are fished and unfished) and feed science and industry with data in ... Title: “Sailbuoy for krill” – a concept for autonomous commercial and scientific monitoring of the ...
Meeting Document : WG-EMM-18/15 : Auteur(s): O.R. Godø, G. Pedersen, D. Peddie, G. Skaret, A. Lowther, F. Grebstad and A. Lohrmann
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
Observation of fishing operation and distributional behaviour of krill on a krill trawler off Wilkes Land during the 1985/86 season
Abstract: Japanese krill fishing operation was observed on board a commercial vessel and actual ... krill on a krill trawler off Wilkes Land during the 1985/86 season Approval: Approved ...
Meeting Document : SC-CAMLR-VI/BG/35 : Auteur(s): T. Ichii (Japan)
Using vessel acoustics to detect diving patterns of krill foraging predators automatically: Development of a novel method for quantifying impact of krill fishing on seals and penguins
from commercial krill fishing operations. Our results documents that some form of automatic detection ... detect diving patterns of krill foraging predators automatically: Development of a novel method for ... quantifying impact of krill fishing on seals and penguins Approval: Approved Secretariat Workflow Status ...
Meeting Document : WG-EMM-15/25 : Auteur(s): T.A. Klevjer, O.R. Godø and B. Krafft (Norway)
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
THE RISKS OF NOT DECIDING TO ALLOCATE THE PRECAUTIONARY KRILL CATCH LIMIT AMONG SSMUS AND ALLOWING UNCONTROLLED EXPANSION OF THE KRILL FISHERY UP TO THE TRIGGER LEVEL
risks associated with three options for a Stage-1 allocation of the precautionary krill catch limit ... risks to krill-dependent predators in a precautionary manner: i) cap krill catches at recent levels ... until a feedback approach to management of the krill fishery can be implemented; ii) agree a new trigger ... : THE RISKS OF NOT DECIDING TO ALLOCATE THE PRECAUTIONARY KRILL CATCH LIMIT AMONG SSMUS AND ALLOWING ...
Meeting Document : WG-EMM-09/12 : Auteur(s): G.M. Watters (USA), S. Hill (United Kingdom), J.T. Hinke (USA) and P. Trathan (United Kingdom)