Resultados de la búsqueda
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Performance of an acoustic sonde design
frequencies are chosen. Each frequency represents the resonant condition of a circular piston transducer with ... single targets, assuming transmission near the cavitation limit but consistent with dynamic strength and ... strength is treated as a parameter, with investigated values from-130 to-50 dB. Performance assessment for ...
Meeting Document : WG-EMM-95/09 : Autor(es): Foote, K.G.
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Composition and vertical distribution of the benthopelagic ichthyofauna of the southern part of the Kerguelen ridge
sublatitudinal sea-bottom elevations with prevailing depths from 960 to 1350 m. Among these fishes there were ... with depth and they were quite abundant. Most abundant on Elan Bank were Macrourus whitsoni, Antimora ... analysis of their vertical distribution by area and depth with the information about their biological state ...
Meeting Document : WG-FSA-96/13 : Autor(es): Piotrovsky, A.S.
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An overview of tagging skates (Rajiformes) and CCAMLR skate tagging data
, longevity, discard survival and abundance. Most Antarctic skate species are little known and, coupled with ... tag loss and tag shedding rates in fish (with emphasis on elasmobranchs), a summary of CEFAS tagging ... of the tagging work undertaken under the auspices of CCAMLR in the Southern Ocean with comments on ...
Meeting Document : WG-SAM-13/25 Rev. 1 : Autor(es): S.R. McCully, D. Goldsmith, G. Burt, R. Scott and J.R. Ellis (United Kingdom)
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An overview of tagging skates (Rajiformes) and CCAMLR skate tagging data
, longevity, discard survival and abundance. Most Antarctic skate species are little known and, coupled with ... tag loss and tag shedding rates in fish (with emphasis on elasmobranchs), a summary of CEFAS tagging ... of the tagging work undertaken under the auspices of CCAMLR in the Southern Ocean with comments on ...
Meeting Document : WG-FSA-13/33 : Autor(es): S.R. McCully, D. Goldsmith, G. Burt, R. Scott and J.R. Ellis (United Kingdom)
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Reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in the 2010/11 and proposal of the consecutive survey in the 2011/12
Abstract: In accordance with the Conservation Measure 41-07 (2010), a survey was conducted in ... not varied among the three years. Total of 62 individuals of toothfish with good physical condition ... the fish released with tag and that of overall catch was considerably high (85 % for D. mawsoni and 79 ... next 2011/12 survey with the same designs as in the 2010/11. Author(s): K. Taki, T. Iwami and M ...
Meeting Document : WG-SAM-11/05 : Autor(es): K. Taki, T. Iwami and M. Kiyota (Japan)
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The Continuous Plankton Recorder in the Southern Ocean: a comparative analysis of zooplankton communities sampled by the CPR and vertical net hauls along 140°E
deployed on the northern leg (average sampling depth = 10.5 m). Both net systems were harnessed with 270?m ... patterns. Species richness and diversity increased with depth, and were lowest for CPR samples. Conversely ... , dominance decreased with depth and was highest for CPR samples. Evenness was similar for all sample groups ... to its shallow towing depth, the CPR focuses on species with surface distributions. Despite under ...
Meeting Document : WS-BSO-07/P5 : Autor(es): Hunt, B.P.V and G. Hosie
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Broadbandwidth sound scattering and absorption from krill (Meganyctiphanes norvegica), Mysids (Praunus flexuousus and Neomysis integer) and shrimp (Crangon crangon)
krill, indicating its validity for other euphausiids species with similar size and shape. However, the ... total target strengths (TTS) of crustaceans with markedly different shapes (i.e. Mysidacea, a mix of ... derived with the generic krill shape and scaled to animal length (L). This implies that crustacean target ... measurements of absorption spectra from decapods indicate that the absorption cross section increases with the ...
Meeting Document : WG-EMM-04/40 : Autor(es): S.G. Conti, D.A. Demer (USA) and A.S. Brierley (United Kingdom)
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Evaluation of de la Mare’s composite standardised index for generating a simple time-series summary of many long-term datasets on Antarctic predators: consequences of missing values and criteria for inclusion of predator parameters
specify general criteria for the inclusion of predator parameters in the index with regard to the ... found that, for inclusion in the index, parameters should be positively correlated with all other ... parameters and preferably with correlations greater than 0.3. If this criterion is met then these results ... for determining the correlation coefficients. These criteria need to be accepted with caution. Further ...
Meeting Document : WG-EMM-98/45 : Autor(es): A. Constable (Australia)
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Assessment of krill biomass in fishing grounds using the data on fishing intensity and hydroacoustic method
krill biomass estimate produced by the echo integrating apparatus used in the layer fished with the ... resulting from the catch statistics and from the hydroacoustic survey carried out with the use of the echo ... concised form with references to corresponding literary sources. Basic principles of the statistical method ... trawls were developed by Dr. Yu.V.Kadilnikov, Head of the AtlantNIRO Laboratory, with the exception of ...
Meeting Document : SC-CAMLR-VIII/BG/10 : Autor(es): USSR
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The results of investigations of the feeding of Antarctic toothfish D. mawsoni in the Ross Sea in 2005/06
depths of 523-2000 m. The total length (TL) of individuals ranged from 49 to 201 cm with weight from 0.8 ... to 192 cm with weight from 0.8 to 110 kg. The substantial part of Antarctic toothfish stomachs were ... % in 2005 and 54% in 2006), with predominance of Antarctic grenadier (Macrourus whitsoni) and icefishes ...
Meeting Document : WG-FSA-06/17 : Autor(es): A.F. Petrov (Russia)