Search results
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Management and uncertainty: the example of South Georgia
Paper Title: Management and uncertainty: the example of South Georgia Abstract / Description ... to consider ways in which CCAMLR can improve its ability to take decisions in the face of uncertainty ... . From an examination of Articles IX 2(f) and XV 2(e, d) of the CCAMLR Convention it follows that a ... comparison of the immediate and long-term effects of any one proposed measure with those of any other measure ... whatever is done. There is no support for this). The inconsistencies chiefly concern the age data, or ... exploitation started. There are no suggestions in the literature (e.g. Biomass 1982) that the determination ... the next 10 years. If recent year-classes are not quite so bad, say no worse than that of 1978, then ... mortality was small and towards the bottom range in recent years, i.e. no more that F=O.l or 0.2, then the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Author(s): Gulland, J.A.
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Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides
Paper Title: Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides ... Abstract / Description: Traditionally, the approach used in the assessment of new fisheries has been based ... on research surveys, making it possible to estimate the standing stock and potential yield of a ... resource by coarse methods. The main aim of such surveys is to monitor fishing operations in order to ... category: those that have developed in the past and for which no information has been received for at ... FISHERIES: THE CASE OF DISSOSTICHUS ELEGINOIDES A.V. Zuleta1 and C.A. Moren02 Abstract Traditionally ... , the approach used in the assessment of new fisheries has been based on research surveys, making it ... possible to estimate the standing stock and potential yield of a resource by coarse methods. The main aim ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Author(s): Zuleta, A.V. and C.A. Moreno
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Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008
Paper Title: Annual changes in species composition and abundance of myctophid fish in the north ... / Description: Species composition and abundance of myctophid fish were analysed using the fish by-catch ... samples collected by scientific observers on board Japanese commercial krill fishing vessels in the area ... 10 myctophid species were identified in the by-catch samples, among which Krefftichthys anderssoni ... 2003 survey was performed by the FV Chiyo Maru No. 5; the others were under- taken by the FV Niitaka ... P. choriodon was mostly unimodal with no significant differences among years (Figure 2a). The size ... scientific observers and the crew on board the FV Niitaka Maru and FV Chiyo Maru No. 5 for collecting by ... CCAMLR has expressed concerns about the impact of incidental catch in the krill fishery on some fish ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Author(s): Iwami, T., M. Naganobu, K. Taki and M. Kiyota
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The Kerguelen database
= 7000.0fi XNET=I~. noTE FINALE 2si 5/Ao; "IT= 31250 NH DE CHALUTAGE5 lDS aHO. :I~ DE CHALUTAGl ... Paper Title: The Kerguelen database Abstract / Description: A database for fishery statistics ... and biological data for the Kerguelen EEZ has been operating in France since 1979. At the end of the ... 1984/85 fishing season, the data from 25 445 trawls had been entered into the database. A graphical ... representation of these data is presented for several parameters including a distribution of the fishing effort ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 23-54 : Author(s): Duhamel, G.
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Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991
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espaJie 1991 r. 1IacToTa scTpet:IaeMOCTH ocHOBHbiX noTpe6JI5IeMbiX BH,liOB Euphausia superba ... Paper Title: Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South ... Georgia in January/February 1991 Abstract / Description: The diet composition and feeding intensity of ... 877 stomachs collected at 44 stations. Both the proportion of krill (Euphausia superba) in the ... stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ... Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Author(s): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
I3 lIPOAYKTI4BHOCTbKl XUWHMKOB RBJIReTCR ~nmue~oB Y ~ C T ~ H , ~ K O C ~ C T ~ M H O ~ O no ... Axona K ynpasneHr.rm pecypcaMm. B cTaTbe npeanaraeTcx MeToA, no3non~m~qmii ucnonb3o~a~b AaHHbre o Kpmne B paqaoHe ... B TS, B TO BpeMR K a K AJIR OAHOBpeMeHHO noJIyYeHHhIX AaHHblX n0 XMWHMKaM U TpaJIeHMRM pa3HEiQa ... COCTaBUJIa TOJIbKO 1 %, YTO noKar3b1BaeT H ~ O ~ X O A H M O C T ~ TaKUX AaHHblX. ~?~CITOJI~~OB ... Paper Title: The use of predator-derived krill length-frequency distributions to calculate krill ... target strength Abstract / Description: The relationship between krill abundance and predator ... krill sampled from the diet of predators to provide a length-frequency distribution of krill at times ... calculated from acoustic data. Changes in the lengthfrequency distribution of krill over a period of a few ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Author(s): Reid, K. and A.S. Brierley
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Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
Paper Title: Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993 Abstract ... / Description: Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the ... years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... previous reports adjusted for the recently proposed definition of krill target strength (Greene et al ... BIOMASS IN THE ELEPHANT ISLAND AREA: 1981 - 1993 R.P. Hewitt Southwest Fisheries Science Center La ... 92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ... ). Estimates for 1981 to 1991 are based on previous reports adjusted for the recently proposed definition of ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Author(s): Hewitt, R.P. and D.A. Demer
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
Paper Title: A simulation study of the method of deriving natural mortality rate using data for ... Champsocephalus gunnari in Subarea 48.3 Abstract / Description: A method of determining the rate of natural ... mortality, based on the construction of a regression between the rate of annual fishing mortality ... (determined by VPA) and fishing effort is described. The intersect of this regression must be equal to zero if ... smaller in terms of absolute value than deviation of the assumed M from its "ideal" value. No theoretical ... WG-FSA-91/2S A SIMULATION STUDY OF THE METHOD OF ... and R.S. Dorovskikh* * Abstract A method of determining the rate of natural mortality, based on ... the construction of a regression between the rate of annual fishing mortality (determined by VPA ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Author(s): Gasyukov, P.S. and R.S. Dorovskikh
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Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)
Paper Title: Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari ... ) Abstract / Description: A large sample of otoliths from the mackerel icefish (Champsocephalus gunnari) was ... measured and weighed and their effectiveness as predictors of fish length and fish mass determined. The two ... measures, otolith length and otolith mass, provide good predictors of fish length, the latter being ... analyses there was no significant difference between the results for male and female fish. Sex was not ... length. log,,-transformed data from all years with no restriction on range. The equation for all years ... all years with no restriction on range. The equation is: loglOWf = -0.0177 + 4.57 log10 L, (SEs ... Sea, Rep. No. CM 1979/n, 14. Reid, K. 1995. The diet of Antarctic fur seals (Arctocephalus gazella ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Author(s): Everson, I., B. Bendall and A. Murray
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... vessels to derive a sink rate and line-weighting regime that would minimise the capture of albatrosses ... /s should greatly reduce the incidental take of albatrosses. For autoline vessels with gear and line ... -setting characteristics similar to the experimental vessel, this sink rate should be achievable with 4 kg ... ) may have affected the line sink-rate measurements. Hook-up rate for the CFL Pioneer was 1/75 s (no ... longline. No further fatalities were recorded, even though the number of albatrosses around the vessel ... ; spacings greater than 70 m had no effect on line sink rates to any of the depths over which measurements ... caught, then every 70 m; with the increase in weight, no more albatrosses were observed to be caught ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Author(s): Robertson, G.G