Search results
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Among-year variation in growth of Antarctic krill Euphausia superba based on length-frequency data
and easy to implement. We applied the methods to Antarctic krill Euphausia superba collected from ... the Southern Ocean over a span of 19 yr to document among-year variation in krill growth during the austral ... estimates of among-year variation in krill growth. We estimate very high among-year variation in growth ... (annual estimates for a 30 mm krill in the Elephant Island region ranged from 0.00 to0.17 mm d −1; mean ...
Meeting Document : WG-EMM-13/P01 : Author(s): A.O. Shelton, D. Kinzey, C. Reiss, S. Munch, G. Watters and M. Mangel (USA)
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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 ... of high density krill aggregations and/or limited area coverage within short time periods. The results ... be useful to obtain quantitative evaluations of krill density and distribution for management purposes ...
Meeting Document : WG-EMM-16/P12 : Author(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 ... 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 Wave (SDWBA ...
Meeting Document : WG-EMM-16/76 : Author(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 ... 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, particularly ... to fishing during the penguin breeding season could reduce krill catches by approximately 30,000 tonnes ...
Meeting Document : SC-CAMLR-XXXV/BG/14 : Author(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 ... integration as a robust noise excluding technique, and as a krill identification technique in case data have ...
Meeting Document : SG-ASAM-17/03 : Author(s): X. Wang, G. Skaret and O.R. Godø
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The importance of obtaining annual biomass information in CCAMLR Subarea 48.2 to inform management of the krill fishery
to the ongoing management of the Southern Ocean krill fishery, Norway would like SC-CAMLR and its Ecosystem ... Monitoring and Management Working Group to consider a proposal to obtain annual krill biomass information ... management of the krill fishery Approval: Approved ... management of the Southern Ocean krill fishery, Norway would like SC-CAMLR and its Ecosystem Monitoring ...
Meeting Document : WG-EMM-10/09 : Author(s): N. Jensen (Norway), R. Nicoll (Australia) and S.A. Iversen (Norway)
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PROPOSAL OF ACOUSTIC SURVEY OF ANTARCTIC KRILL USING FISHING VESSEL
, and planning an acoustic survey using a commercial krill fishing vessel that enables annual data collection ... . This proposal focuses on monitoring yearly trend of krill distribution and fishing ground formation. The goal ... , M. Kiyota, F. Matsumoto and Y. Takao (Japan) Title: PROPOSAL OF ACOUSTIC SURVEY OF ANTARCTIC KRILL USING ... an acoustic survey using a commercial krill fishing vessel that enables annual data collection. This proposal ...
Meeting Document : WG-EMM-11/35 : Author(s): K. Abe, M. Kiyota, F. Matsumoto and Y. Takao (Japan)
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A procedure for krill density estimation
Abstract: This paper is intended to provide a generalised example of a procedure for krill ... , this paper is not the CCAMLR krill density estimation procedure, but has been written as a discussion ... : A procedure for krill density estimation Microsoft Word File: asam-16-01.docx Approval: Approved Secretariat ... This paper is intended to provide a generalised example of a procedure for krill density estimation ...
Meeting Document : SG-ASAM-16/01 : Author(s): M.J. Cox, S. Fielding and A. Constable
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Supplement to the krill synoptic survey design in Area 48 (with participation of a Russian scientific research vessel)
time for the recent twenty years the material which allows to have an idea of krill simultaneous ... distribution over the whole water area of Subareas 48.1-48.4 covering a vast zone of krill drift ... in appropriateness of krill horizontal distribution over the whole Area 48, and to reveal interrelations between ... : Supplement to the krill synoptic survey design in Area 48 (with participation of a Russian scientific ...
Meeting Document : WG-EMM-99/43 : Author(s): V.A. Sushin, S.M. Kasatkina and F.F. Litvinov (Russia)
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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 ... of analysis, to better account for process and model error structure, now that a physically based krill target ... of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified stochastic wave ...
Meeting Document : WG-EMM-06/32 : Author(s): C.S. Reiss and A.M. Cossio (USA)