Search results
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
nnaBY'IHX phl63aBOAax, a TaKlKe KYTKH, CTpYKTypa KOTOPhlX HanOMHHaeT neHTO'IHhle. - 4 - PRELIMINARY ... %. It is possible that the body features of Scotia Sea icefish (large head and spines on opercular bones ... Paper Title: Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined ... Antarctic icefish, bumphead notothenia, and Scotia Sea icefish. This was primarily caused by the heavy net ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Author(s): Zaucha, J.
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By-catch of fish in the krill fishery
WG-KRILL-9l/25 BY·CATCH OF FISH IN THE KRILL FISHERY ... . 384 Table 1: Information on trawls in Subarea 48.3 (South Georgia). a b Column headings ... 2: Information on trawl in Subarea 48.2, South Orkney Island. (Column headings are the same as for Table ... on trawl in Subarea 48.6. (Column headings are the same as for Table ... Paper Title: By-catch of fish in the krill fishery Abstract / Description: Observations are ... reported of icefish being taken as by-catch during krill fishing operations from a research vessel. The ... results indicate that the by-catch of fish in the commercial krill fishery may be significant in some ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 381–401 : Author(s): Everson, I., A. Neyelov and Y.B. Permitin
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Food consumption by predators in a CCAMLR integrated study region
the headings for output is a fairly trivial task. 3. USING THE PROGRAM The program is presently held ... species complete one breeding cycle in one year, wandering, grey-headed and light-mantled sooty ... -browed albatross; (ill) at 600 km - grey-headed albatross; and 505 (iv) at 1 000 km - light ... Paper Title: Food consumption by predators in a CCAMLR integrated study region Abstract ... provided, illustrating the changes produced by using these new sub-models. Results of initial sensitivity ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Author(s): Croxall, J.P., C. Ricketts and A.G. Wood
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
for which losses are assessed by counting remains of heads and lips coming up on the lines (Ramos- Cartelle ... no heads or lips of depredated fish that could be used to assess losses, the authors used an indirect ... 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 Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Author(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
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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 ... 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 ... during commercial operations and the effectiveness of by-catch provisions (the 5% rule) set by CCAMLR in ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Author(s): Constable, A.J., R. Williams and W.K. de la Mare
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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 : Author(s): Okuda, T. and M. Kiyota
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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 : Author(s): Candy, S.G
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By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
Paper Title: By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia ... an investigation of juvenile Antarctic fish caught during krill fishing by the FV Grigory Kovtun in ... the area around South Georgia from May to July 1992. Two species were predominant in the by-catches ... per day. In May to June, N. larseni juveniles were represented by fingerlings (mean length of 42.4 to ... CCAMLR Science. Vol. 1: 129-142 BY-CATCH, GROWTH AND ... caught during krill fishing by the FV Grigoy Kovtun in the area around South Georgia from May to July ... 1992. Two species were predominant in the by-catches: Charnpsocephalus gunnari and Nototheniops ... juveniles were represented by fingerlings (mean length of 42.4 to 47.4 mm) and yearlings (72.5 to 73.7 mm ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 129–142 : Author(s): Pakhomov, E.A. and S.A. Pankratov
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
Paper Title: Estimating the impact of depredation by killer whales and sperm whales on longline ... caused by killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) around South Georgia ... toothfish, usually depressing CPUE by about 50%. Sperm whales occur in smaller pod sizes, normally between 1 ... and 4 animals, and have a relatively lower impact on catches, depressing CPUE by up to 20%. Sperm ... Estimating thE impact of dEprEdation by killEr whalEs and spErm whalEs on longlinE fishing for toothfish ... longliners between 2003 and 2009 were analysed to look at the levels of depredation caused by killer whales ... CPUE by about 50%. Sperm whales occur in smaller pod sizes, normally between 1 and 4 animals, and have ... a relatively lower impact on catches, depressing CPUE by up to 20%. Sperm whales have been more ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model
Paper Title: The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a ... deciding the closure date for fisheries monitored by the Secretariat of CCAMLR, have been difficult to ... implement because of the variation in catch rates shown by the fisheries. Non-fluctuating random and ... is received by the Secretariat. The probability of large over-shoots of the TAC is reduced if ... TO CLOSE FISHERIES REGULATED BY CCAMLR: A SIMULATION MODEL DJ. Agnew* Abstract The methods ... , described in CCAMLR Conservation Measures, used for deciding the closure date for fisheries monitored by ... shown by the fisheries. Non-fluctuating random and fluctuating random catch histories are simulated and ... fishery if these rates indicate that the T AC will be taken before the next report is received by the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Author(s): Agnew, D.J.