Résultats de la recherche
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Distribution, density and relative abundance of Antarctic krill estimated by maximum likelihood geostatistics on acoustic data collected during commercial fishing operations
Abstract: There is a substantial harvestfor Antarctic krill in the Southern Ocean, butlittle ... provide an example where 34 days of acoustic data, collected during commercial krill fishing operations on ... to preferential sampling of high density krill aggregations and/or limited area coverage within short ... by the fishing vessels, can be useful to obtain quantitative evaluations of krill density and ...
Meeting Document : WG-EMM-16/P12 : Auteur(s): E.J. Niklitschek and G. Skaret
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Acoustic monitoring and evaluation of krill in the Antarctic ecosystem Bransfield Strait and around Elephant Island during ANTAR XXI and XXII, aboard RV Humboldt, Peru
Abstract: Monitoring and hydroacoustic assessment of the distribution and biomass of krill ... ; ANTAR XXII: 16 stations). Results indicated that krill swarms during the day swarms were recorded at ... from the surface to 20 m deep. A wide distribution of krill in the study area, the highest densities ... ²). The estimations of hydroacoustic biomass krill by the method of Distorted Stochastic Approximation ...
Meeting Document : WG-EMM-16/76 : Auteur(s): R. Cornejo, M. Flores and J. Zuzunaga
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Precautionary management of the Antarctic krill fishery at small spatial scales in the context of regional climate variability: pros and cons of coastal buffers, closed areas and move-on rules
changes in the oceanic domain add to the complexity of managing the Antarctic krill fishery, particularly ... plausible that removals of even small amounts of krill could have reduced foraging opportunities. We discuss ... three management tools that could provide conservation benefits for near-shore krill-dependent species ... buffers closed to fishing during the penguin breeding season could reduce krill catches by approximately ...
Meeting Document : SC-CAMLR-XXXV/BG/14 : Auteur(s): Delegation of the United Kingdom
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Evaluation of some processing techniques applied to acoustic recordings from two krill fishing vessels
Abstract: Acoustic data from krill fishing vessels have the potential to provide useful ... contributions to assess local krill abundance and distribution, and even as input to the CCAMLR feedback ... . Here we show examples of processing with a prerequisite that abundance and distribution of krill are ... integration as a robust noise excluding technique, and as a krill identification technique in case data have ...
Meeting Document : SG-ASAM-17/03 : Auteur(s): X. Wang, G. Skaret and O.R. Godø
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Systematic Coverage’ by scientific observers on Krill Fishing Vessels
Abstract: A work plan to establish an observer scheme for krill fishery was agreed at the ... the observers. In this document, Japan proposes a framework for scientific observer system for krill ... Coverage’ by scientific observers on Krill Fishing Vessels Approval: Approved ...
Meeting Document : WG-EMM-08/34 : Auteur(s): Delegation of Japan
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A compilation of parameters for a krill–fishery–predator model of the Scotia Sea and Antarctic Peninsula
Abstract: We describe the compilation and derivation of parameters for use in krill-fishery ... potential krill transport rates from the OCCAM global ocean circulation model. This parameter set, like most ... process. Our calculations suggest that myctophid fish are the major consumers of Antractic krill in the ... . Hinke and G. Watters (USA) Title: A compilation of parameters for a krill–fishery–predator model of the ...
Meeting Document : WG-EMM-06/30 Rev. 1 : Auteur(s): S. Hill, K. Reid, S. Thorpe (United Kingdom), J. Hinke and G. Watters (USA)
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A review and update of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified stochastic wave born approximation
review the trends in biomass, size frequency distribution and proportional recruitment of Antarctic Krill ... . Use of acoustic windows based on the range of krill size increases variability in biomass estimates ... krill target strength model has been developed. Author(s): C.S. Reiss and A.M. Cossio (USA) Title: A ... review and update of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified ...
Meeting Document : WG-EMM-06/32 : Auteur(s): C.S. Reiss and A.M. Cossio (USA)
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
Abstract: Inter- and intra-annual variability of commercial krill trawling positions for the 1980 ... krill, especially at the beginning of the operation each season. In summer, biological factors that ... affect product quality such as salp abundance and the proportion of green krill, also seemed to have an ... to have an effect. Author(s): S. Kawaguchi and K. Segawa Title: Analysis of krill trawling ...
Meeting Document : WG-EMM-01/35 : Auteur(s): S. Kawaguchi and K. Segawa
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Towards developing a feedback management procedure for the Antarctic krill fishery
spatial distribution of fishing activity for Antarctic krill in Statistical Area 48. The CEMP currently ... relevant to making inference about the potential for competition between krill-dependent predators and the ... strategy for the krill fishery includes comparison of predator performance in no-fishing areas, these ... management procedure for the Antarctic krill fishery Approval: Approved ...
Meeting Document : WG-EMM-12/44 : Auteur(s): G. Watters and J. Hinke (USA)
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Assessment of escape mortality of Antarctic krill (Euphausia superba) in trawls
Abstract: The overall purpose of this study was to estimate the mortality rate of Antarctic krill ... experiment was carried out on the krill fishing grounds off South Orkney Islands (60°35’S, 45°30’W), during ... to a realistic catching process in a 16 mm mesh size, was found to be 1-6%. Krill may be more ... (Norway) and L.A. Krag (Denmark) Title: Assessment of escape mortality of Antarctic krill (Euphausia ...
Meeting Document : WG-EMM-14/14 : Auteur(s): B.A. Krafft (Norway) and L.A. Krag (Denmark)