Search results
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Factors affecting the incidental mortality of seabirds in the Dissostichus eleginoides fishery in the southwest Atlantic (Subarea 48.3, 1995 season)
the to the longline fisheries for Patagonian toothfish beginning of large-scale longline fishing for Incidental ... for both fleets three days D. exulans (2%). Of the total number of birds before and three days after each ... Paper Title: Factors affecting the incidental mortality of seabirds in the Dissostichus ... eleginoides fishery in the southwest Atlantic (Subarea 48.3, 1995 season) Abstract / Description: This paper ... Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3 during the 1995 season. The data was obtained ... from the fine-scale reports submitted by each vessel to its national fishing authority and supplemented ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 79–91 : Author(s): Moreno, C.A., P.S. Rubilar, E. Marschoff and L. Benzaquen
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Interaction of marine mammals with the longline fishery around the Kerguelen Islands (Division 58.5.1) during the 1995/96 cruise
beginning to be documented, little is known about interactions of marine mammals with longline fisheries ... Paper Title: Interaction of marine mammals with the longline fishery around the Kerguelen Islands ... (Division 58.5.1) during the 1995/96 cruise Abstract / Description: The only interaction observed between ... longliners fishing for Patagonian toothfish (Dissostichus eleginoides) to the west of the Kerguelen Islands ... during the 1995/96 cruise and marine mammals occurred with the Antarctic fur seal (Arctocephalus gazella ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 171–174 : Author(s): Capdeville, D
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Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons
runs, and projections from the end of the VPA again predict a high abundance of 4 year olds in 1990/91 ... After = 7.69898365 Age Step Abundance Lower Upper 2 758927.1 511994.7 56888.3 511994.7 3 68532.9 ... Paper Title: Notes on the use of virtual population analysis for stock assessment of the mackerel ... icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons ... Abstract / Description: Following on from the apparent failure of the CCAMLR Working Group on Fish Stock ... Assessment (WG-FSA) to satisfactorily assess in 1991 the status of the Champsocephalus gunnari population in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 49–79 : Author(s): Parkes, G.
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
-' a is the age of the krill in years, and t measures time after the 'start! of the year. As the three-month ... Table 2: Median values of the distributions of depletion at the end of the 20-year period of harvesting ... the end of the harvesting period (Bf,,/Ksp) plotted against y. The median, 5% and 95% distribution points ... relationship of equation (A.31, this relationship comes into effect only after the first ten years, i.e ... Paper Title: Further computations of the consequences of setting the annual krill catch limit to ... a fixed fraction of the estimate of krill biomass from a survey Abstract / Description: Butterworth ... et al. (1992) put forward an extension of the harvesting model of Beddington and Cooke (1983) to ... relate potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns
coincided with the beginning of a longer-term dispersal of krill aggregations, which resulted ... sector were identifi ed. The beginning of the southern phase of meri- dional air exchange can ... Paper Title: The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991 ... : fishing effort distribution and interannual patterns Abstract / Description: Data on the Soviet krill ... fishery in the Atlantic Sector of the Antarctic from 1977 to 1992 are discussed. The total fishing effort ... from 1977 to 1991 was 50 086 vessel-days fished, in Subareas 48.3 (45% of the total for the period ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Author(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky
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The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
sold salted in some quantities to Buenos Aires a few years after whaling had begun. However, it took ... consumed by demersal fish must have declined substantially after commercial fishing from the late 1960s ... obtained from surveys con- ducted well after the start of commercial exploita- tion at a time when stock ... were only available from waters deeper than 100 m further offshore after exploita- tion had started ... Paper Title: The role of fish as predators of krill (Euphausia superba) and other pelagic ... resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop) Abstract / Description ... : Krill forms an important part of the diet of many Antarctic fish species. An understanding of the role ... of fish as krill predators in the Southern Ocean is critical to understanding how changes in fish ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Author(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
gradually to a maximum around 500 000 tonnes in 1981/82 (Miller, 1989). After dropping to a low level ... other years. They represent the lower end of the CPUE range. Table 5: Average CPUE (kilogram/hour ... Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... operations in the Atlantic sector of the Antarctic Abstract / Description: Catch per unit effort (CPUE) data ... the period 1975/76 to 1987/88. Comparisons are carried out between subareas in single years, between ... years on a subarea and area basis, and between oceanic and shelf regions. Results show that the CPUE may ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Author(s): Siegel, V., V. Sushin and U. Damm
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A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia
be found in, for example, Hoggarth (1990), and I summarise from this reference here. Parasitism begins ... year after having attained sexual maturity, so that they have one opportunity to breed before being ... the basic characteristics of the system. Equilibrium Solutions for the Unexploited Stock To begin ... ratio after harvesting has commenced, and the subsequent rise and fall in the ratio. Starting from 100 ... Paper Title: A preliminary investigation of the possible effects of rhizocephalan parasitism on ... the management of the crab fishery around South Georgia Abstract / Description: Relatively high ... levels of infection by a rhizocephalan barnacle have been found in the population of the crab Paralomis ... the main effects of the parasite is to render infected animals sterile. Parasitism can therefore ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Author(s): Basson, M
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Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels
several seconds after deploy- ment, because the buoyant lines between weights float momentarily. The mass ... a continuous line, and weights are tied to the join in the centre and at each end of the basket. As lines ... the ends of the branch/connecting lines, and a weight is attached to the end of each one (Figure ... 0.3 m long snoods with hooks, were attached 0.3 m above the terminal ends of each branch/connecting ... with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... fishing operations the netting bags abrade on the seabed causing rocks to be lost and the weights to ... no maintenance. An experiment was conducted on a Spanish-system longline vessel to determine the ... relationship between the sink rates of longlines equipped with bags of rocks (4, 6 and 8 kg) and those with ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Author(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon
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The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach
is an approximation of the amount of time after deployment from a longliner that a bait would be well beyond ... Paper Title: The influence of bait quality on the sink rate of bait used in the Japanese longline ... determine the effects of bait size (large versus small) and bait condition (frozen versus thawed) on the ... sink rate of five species of bait used in the Japanese longline tuna fishery in Tasmanian waters. The ... , condition) were statistically significant, the most powerful effect was due to bait condition: thawed bait ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Author(s): Brothers, N., A. Foster and G. Robertson