Resultados de la búsqueda
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Attribtuion of acoustic echoes to squid in the south Atlantic
Paper Title: Attribtuion of acoustic echoes to squid in the south Atlantic Abstract / Description ... : During a research cruise of the British Antarctic Survey ship RRS James Clark Ross in February 1996, more ... than 2 000 individuals of the ommastrephid squid, Martialia hyadesi, were caught in a single haul made ... by a pelagic trawl near the Antarctic Polar Frontal Zone in CCAMLR Subarea 48.3. This paper describes ... acoustic targets that could be attributed to the haul. No other species were caught with the squid which ... no changes were made during the cruise to simplify data collection. Integrated data were processed ... to add these calibration corrections but no additional corrections have been made for the elevated ... this layer scattered more weakly at 120 kHz. After dawn, the speckles cleared away and no more ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Autor(es): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley
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The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
Paper Title: The sensitivity of multiple output statistics to input parameters in a krill ... within CCAMLR to evaluate options for managing the Antarctic krill fishery in the Scotia Sea and southern ... Drake Passage. The model analysed here required 2 311 input values for each of four scenarios and ... the status of predator groups more than they affected statistics indicating the status of the target ... were illustrative as there was no information avail- able to the modellers about appropriate reference ... abundance of the relevant component is <75% of the abundance in equivalent no-fishing trials at the end ... equivalent no-fishing trials at the end of the recovery period. Predators SSMU Services (II.2 the term ... between the two extremes of no-movement and maximum movement examined by Watters et al. (2013).2 Krill ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Autor(es): Hill, S.L. and J. Matthews
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Integration of CPUE data into assessments using the Generalised Yield Model
Paper Title: Integration of CPUE data into assessments using the Generalised Yield Model Abstract ... / Description: For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has ... accorded high priority to the development of methods of integrating different indicators of stock status ... into assessments using the Generalised Yield Model (GYM). In this paper, we propose a method, based on ... the assessments, and WG-FSA had no time to consider this method in detail. The aim of this paper ... three years in assessing the stocks of D, eleginoides indicates that no small group has in Subarea 48.3 ... CPUE DATA INTO ASSESSMENTS USING THE GENERALISED YIELD MODEL G.P. Kirkwood Renewable Resources ... Australian Antarctic Division Channel Highway, Kingston 7050 Tasmania, Australia Abstract For the last ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Autor(es): Kirkwood, G.P. and A.J. Constable
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Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system
Paper Title: Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system Abstract ... / Description: An exchange system was established among Members of CCAMLR to compare age determinations for the ... same species among different laboratories. Four species were included in the exchange: Notothenia ... rossii, Champsocephalus gunnari, Notothenia gibberifrons and Pleuragramma antarcticum. The level of ... of Notothenia rossii scales from South Georgia and the South Shetland Islands. No. Length Weight ... SC-CAM LR-VIIIIBG/46 RESULTS OF THE CCAMLR ANTARCTIC ... established among Members of CCAMLR to compare age determinations for the same species among different ... laboratories. Four species were included in the exchange: Notothenia rossii, ChampsocephaJus gunnari ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Autor(es): Kock, K.-H.
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Evaluating the impact of multi-year research catch limits on overfished toothfish populations
Paper Title: Evaluating the impact of multi-year research catch limits on overfished toothfish ... populations Abstract / Description: In stocks that have been depleted by overfishing, the benefit of ... additional fisheries removals for research purposes needs to be evaluated against the risk that such catches ... may contribute to delaying or preventing the recovery of such stocks. Through simulating a Patagonian ... no research fishing scenario was calculated. The length of time it would take for the stock to ... ), and no S-R relationship (scenarios 17). Finally, the impact of natural mortality being 0.1 higher or ... 3). None of the scenarios, including those with no research catches, satisfied criterion (i) of ... the stock, both in absolute terms as well as rela- tive to the estimated median biomass if no research ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Autor(es): Welsford, D.C
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On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)
Paper Title: On the instantaneous natural mortality rate of Champsocephalus gunnari, South ... Georgia (Subarea 48.3) Abstract / Description: The instantaneous rate of natural mortality (M) of ... Champsocephalus gunnari in the South Georgia area was assessed using six different methods. Data on size ... composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used in ... WG-FSA-90/31 ON THE INSTANTANEOUS NATURAL MORTALITY ... * * Abstract The instantaneous rate of natural mortality (M) of Champsocephalus gunnari in the South Georgia ... 1968/69 and the age/length key for the first half of 1972 were used in the calculations. The results ... provided a wide range of estimates for M. The discussion of the results suggested that M=O.56 should be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Autor(es): Frolkina, G.A. and R.S. Dorovskikh
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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 : Autor(es): Zuleta, A.V. and C.A. Moreno
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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 : Autor(es): Gulland, J.A.
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Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1)
Paper Title: Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1 ... trawl surveys around Elephant Island (the northernmost island of the South Shetland Islands) from 1977 ... /78 to 1992/93. The results are presented in table format. File: 10kock-harm.pdf ... to the south of Clarence Island (see Kock, 1986 - Figure 4) for which no information on fish ... Clarence Island were no longer included in the recent estimate. REFERENCES Everson, I. 1987. Areas of ... AREAS OF SEABED WITHIIV THE 500 M ISOBATH AROUND ELEPHANT ISLAND (SUBAREA 48.1) K.-H. Kock and U ... trawl surveys around Elephant Island (the northernmost island of the South Shetland Islands) from 1977 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 131–135 : Autor(es): Kock, K.-H. and U. Harm
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The Kerguelen database
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 ... cBeAeHHH 0 pacnpeAeJIeHHH no qaCTOTe AJIHHbr no BHAaM 3a nepHoA C 1979/80 no 1985/86 r. - 25 - THE ... is exploited because no fish under 23 cm were caught. A decrease of the mean length is obvious ... THE KERGUELEN DATABASE G. Duhamel (France) - 23 ... - Abstract A database for fishery statistics and biological WG-CFSA-86/3 data for the Kerguelen EEZ has ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 23-54 : Autor(es): Duhamel, G.