Résultats de la recherche

1. Krill population dynamics at South Georgia: implications for ecosystem-based fisheries management

   Abstract:  The South Georgia region supports a large biomass of krill that is subject to high ... interannual variability. The apparent lack of a locally self-maintaining krill population at South Georgia ... to successful ecosystem-based management of krill fishery in the region. Krill acoustic-density data ... with krill population size structure over the same period from predator diet data, were used with a ...

   Meeting Document : WG-EMM-10/P08 : Auteur(s): K. Reid, J.L. Watkins, E.J. Murphy, P.N. Trathan, S. Fielding and P. Enderlein

2. Background information to support development of a feedback management strategy for the krill fishery in Subarea 48.1

   information needed to support development of a feedback management strategy for the krill fishery in Subarea ... negatively impacting the krill fishery while simultaneously mitigating risks to krill-dependent predators. We ... krill biomass and commercial fishery catch and effort to better understand how retention and ... concentration mechanisms aggregate krill in fishable quantities above the background concentration. We use a ...

   Meeting Document : WG-EMM-16/45 : Auteur(s): Antarctic Ecosystem Research Division, Southwest Fisheries Science Center and NOAA Fisheries

3. Sounds like more krill

   Abstract:  Antarctic krill, Euphausia superba, comprise the foundation of the food-web in the ... Southern Ocean and are the target of a large fishery. Recently, the total abundance of krill in the Scotia ... Conservation of Antarctic Marine Living Resources (CCAMLR) to revise the precautionary catch level for krill in ... energy attributed to krill, scaled by the Greene et al. model of krill acoustical reflectivity or target ...

   Meeting Document : WG-EMM-04/41 : Auteur(s): D.A. Demer and S.G. Conti (USA)

4. Interannual variability in Antarctic krill (Euphausia superba) density at South Georgia, Southern Ocean: 1997 – 2013

   Abstract:  This paper, now in press in ICES Journal of Marine Science, presents krill density ... estimates for a 17 year time series of acoustic surveys of the Western Core Box at South Georgia.  Krill ... -frequency identification window and converted to krill density using the Stochastic Distorted-Wave Born ... Approximation (SDWBA) target strength model. Krill density ranged over several orders of magnitude (0 to 10 000 ...

   Meeting Document : WG-EMM-14/P04 : Auteur(s): S. Fielding, J. Watkins, P. Trathan et al.

5. Investigations on midwater trawling for krill (Euphausia superba) in the Southern Ocean

   Abstract:  Results of harvesting operations for Antarctic krill (Euphausia superba) in Fishing ... Area 58 in the Indian Ocean Sector of Southern Ocean, during the First Indian Antarctic Krill ... °04'-40°04' E long, from 27 January to 12 February 1996. In the area of operations, krill ... long. Krill were present in 33.3 per cent of the total number of hauls taken. Major species obtained ...

   Meeting Document : WG-EMM-98/38 : Auteur(s): M.R. Bhoopendranath, M.K.R. Nair, A. Anrose and V.C. George (India)

6. Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets

   Abstract:  Central to understanding krill population dynamics is knowledge of their population ... structure. To examine this we used length-frequency distributions from 142 weeks of sampling (n= 23996 krill ... ) of 3 predator species breeding at South Georgia and 12 weeks of sampling (n = 10 252 krill) from ... sampling the same overall krill population. Greatest similarity results from comparing net samples with ...

   Meeting Document : WS-AREA 48-98/15 : Auteur(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)

7. Evaluation of krill transport factor results in Subarea 48.2 in summer period of 1996

   Abstract:  The methods and preliminary data on evaluation of krill transfer factors results in ... Weddell Sea waters. The experiment was carried out in two stages: evaluation of krill transport through ... the polygon boundaries; hydroacoustic evaluation of krill biomass and distribution in the polygon and ... researches of krill transport peculiarities through the polygon depending on water dinamics. Krill transport ...

   Meeting Document : WG-EMM-96/37 : Auteur(s): Sushin, V.A., Kasatkina, S.M., Shnar, V.N., Abramov, A.M., Polischuk, M.I.

8. Dynamics of Antarctic krill in the Bransfield Strait during austral summer and autumn investigated using acoustic data from a fishing vessel

   Abstract:  The Antarctic krill fisheries have evolved to operate in ever more concentrated ... geographical areas of predictable high krill densities, and knowledge about trends and variability in krill ... interactions between krill, krill-dependent predators and the krill fishery. Acoustic data collected from the ... fishing vessels might help provide such insight. In the present work, the dynamics of krill with regards ...

   Meeting Document : WG-EMM-17/40 : Auteur(s): X. Wang, G. Skaret, O.R. Godø and X. Zhao

9. RESOURCES EVALUATION OF ANTARCTIC KRILL EUPHAUSIA SUPERBA DANA USING AREAL TRAWLING AND HYDRO-ACOUSTIC DATA

   Abstract:  Quantitative method for describing krill mass congestions based on perennial ... observations using trawling and hydroacoustic data is proposed. Reliable evaluation of krill resources is ... rules applicable for natural habitat and equal probability concentrations. Spatial analyses of krill ... krill into regions is based on a principle of equal probability applied for congestions instead of the ...

   Meeting Document : WG-SAM-08/P01 : Auteur(s): L.A. Kovalchuk (Ukraine)

10. Predicting changes in the Antarctic krill Euphausia superba population at South Georgia

    of Antarctic krill Euphausia superba and subsequent effects on dependent predators. However, the ... nature and consequences of changes in krill population dynamics that accompany l1uctuations in its ... abundance are essentially unknown. A conceptual model, developed froll1 quantitative measures of krill ... the abundance and population structure of krill in 1998 and the consequences for predators. Consistent ...

    Meeting Document : WG-EMM-99/37 : Auteur(s): K. Reid, K.E. Barlow, J.P. Croxall and R.I. Taylor (UnitedKingdom)

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