Résultats de la recherche
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By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in Statistical Area 58 (January to March 1995)
Paper Title: By-catch of fishes captured by the krill fishing vessel Chiyo Maru No. 2 in ... . Unfortunately, Armstrong's fish by-catch data were not presented in a standardised manner. This paper ... presents a brief re-analysis of the by-catch data collected on board the Chiyo Maru No. 2; means and ... were caught per hour of towing. Confidence intervals for mean by-catch estimates are wide suggesting ... CCAMLR Science, Vol. 3 (1996): 111-123 BY-CATCH OF ... FISHES CAPTURED BY THE KRILL FISHING VESSEL CHIYO MARU NO. 2 IN STATISTICAL AREA 58 (JANUARY TO MARCH ... fish by-catch data were not presented in a standardised manner. This paper presents a brief re ... -analysis of the by-catch data collected on board the Chiyo Mnru No. 2; means and variances are calculated ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 111–123 : Auteur(s): Watters, G
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
Paper Title: Seabird by-catch by autoline vessels: do line setters increase the sink rate of ... m –1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands Patagonian ... toothfish (Dissostichus eleginoides) fisheries to deter seabirds, ostensibly by expediting gear sink rates ... AUTOLINERS AND SEABIRD BY-CATCH: DO LINE SETTERS INCREASE THE SINK RATE OF INTEGRATED WEIGHT LONGLINES? G ... weight (IW) (50 g m–1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands ... Patagonian toothfish (Dissostichus eleginoides) fisheries to deter seabirds, ostensibly by expediting gear ... Islands (Subarea 58.6 and Division 58.5.1 respectively). Reported seabird by-catch rates are among the ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Auteur(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
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Brief comments on the simulation study made by Professor Butterworth on krill fishing by an individual Japanese trawler
Paper Title: Brief comments on the simulation study made by Professor Butterworth on krill ... fishing by an individual Japanese trawler Abstract / Description: In this paper, three essential ... questions are raised concerning the simulation study of the Japanese krill fishery carried out by ... MADE BY PROF. BUTTERWORTH ON KRILL FISHING BY AN INDIVIDUAL JAPANESE TRAWLER T. Ichii and Y. Endo ... Japanese krill fishery carried out by Butterworth (1988). Firstly, the simulation study used krill ... simulation as meaningful as possible by using most of the information available at present. His model ... caused by an underestimation of variability in within-concentration krill abundance and the searching ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 347–350 : Auteur(s): Ichii, T. and Y. Endo
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Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
Paper Title: Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division ... tonnes (Lubimova, Shust, 1980 and Shust, 1987). However these extrapolated values of krill consumption by ... the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from ... ) CONSUMPTION BY COAST AL FISHES IN DIVISION 58.4.2 (KOSMONA VTOV AND SODRUZHESTV A SEAS) Ye.A. Pakhomov ... , Shust, 1980 and Shust, 1987). However these extrapolated values of kriU consumption by fish and other ... Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from trawl and ... determine the level of krill consumption by its various predators. Previous assessments (Lubimova, Shust ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Auteur(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk
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Research currently being undertaken by the Republic of South Africa on "dependent and related species" within the Antarctic marine ecosystem
Paper Title: Research currently being undertaken by the Republic of South Africa on " ... --CAMLR-IV/BG/2 1985 RESEARCH CURRENTLY BEING UNDERTAKEN BY THE REPUBLIC OF SOUTH AFRICA ON "DEPENDENT ... Ornithology, Universit::i of Cape Town. The SCUPe of the wor-k is Pl'im.arilY ec:olo'Slic.g.1, aimed at an ... vo~dgins south~ard - 69 - from Cape Town, Most of these birds - also the sheathbi I ls and ... observations r)f the birds on the islands in 18:32. Ad,jitional inform.at ion wa5 collected bY members of the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 59-77 : Auteur(s): South Africa
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
Paper Title: Comparison of two methods to assess fish losses due to depredation by killer whales ... tonnes and 739 ± 87 tonnes of Patagonian toothfish respectively were estimated to be depredated by the ... approach, which can only be implemented when a sufficient level of by-catch species occurs, provides ... Science, Vol. 22 (2015): 1–14 1 Comparison of two methods to assess fish losses due to depredation by ... were estimated to be depredated by the two species. When the two species co-occurred around vessels, 1 ... depredated Patagonian toothfish. This approach, which can only be implemented when a sufficient level of by ... , such as estimating the amount of biomass loss caused by predators. While these losses can be directly ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Auteur(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
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Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia
seabird by-catch in the longline toothfish fishery around South Georgia Abstract / Description: A series ... used. Therefore to minimise seabird by-catch, line-weighting regimes of at least 8.5 kg at 40 m ... intervals should be used. Results suggested that seabird by-catch on lines using effective weighting regimes ... EVALUATION OF THE EFFECTIVENESS OF WEIGHTING REGIMES IN REDUCING SEABIRD BY-CATCH IN THE LONGLINE ... when 12.75 kg was used. Therefore to minimise seabird by-catch, line-weighting regimes of at least 8.5 ... kg at 40 m intervals should be used. Results suggested that seabird by-catch on lines using ... , weighting regime, toothfish, seabirds, by-catch reduction, CCAMLR INTRODUCTION Longline fishing for ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Auteur(s): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes
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Assessments of by-catch in trawl fisheries at Heard and McDonald Islands
Paper Title: Assessments of by-catch in trawl fisheries at Heard and McDonald Islands Abstract ... as by-catch: Channichthys rhinoceratus, Lepidonotothen squamifrons and Bathyraja spp. (deep-water ... model (GYM) used by the CCAMLR Working Group on Fish Stock Assessment (WG-FSA). Input data included ... commercial operations and the effectiveness of by-catch provisions (the 5% rule) set by CCAMLR in 1996 to ... was taken as the smallest recorded in by-catch (170 mm) because few fish have been found in the by ... ASSESSMENTS OF BY-CATCH IN TRAWL FISHERIES AT HEARD AND MCDONALD ISLANDS A.J. Constable, R. Williams and ... as by-catch: Channichthys rhinoceratus, Lepidonotothen squamifions and Bathyraja spp. (deep-water ... model (GYM) used by the CCAMLR Working Group on Fish Stock Assessment (WG-FSA). Input data included ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Auteur(s): Constable, A.J., R. Williams and W.K. de la Mare
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Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects
distribution, random vessel effects and random stratum-by-year effects Abstract / Description: The current ... CCAMLR areas is to model the haul-by-haul ratios of catch to effort as the response variable in a ... addition, random vessel effects are introduced into the GLM, as specified by a generalised linear mixed ... realistic estimates of their precision. Extra efficiency is gained by recovery of inter-vessel information ... DISTRIBUTION, RANDOM VESSEL EFFECTS AND RANDOM STRATUM-BY-YEAR EFFECTS S.G. Candy Australian Antarctic ... eleginoides) for CCAMLR areas is to model the haul-by-haul ratios of catch to effort as the response variable ... values. In addition, random vessel effects are introduced into the GLM, as specifi ed by a generalised ... series and more realistic estimates of their precision. Extra effi ciency is gained by recovery of inter ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Auteur(s): Candy, S.G
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Paper Title: Analysis of variability of krill size and fish by-catch in the Japanese krill ... relationship between statistical precision and sample size was estimated by using variance component analysis ... from fishery process as observation error. In both krill length and by-catch fish number, the ... parameters estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years ... statistical precision than the data collected by research vessels. This is primarily because the data ... VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN THE JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA ... estimated by using variance component analysis. Observer datasets from the Japanese krill fishery from 1995 ... length and by-catch fish number, the parameters estimated by the Markov chain Monte Carlo (MCMC) method ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota