Search results
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Infectious diseases of Antarctic penguins: current status and future threats
Antarctica. From previous reports we know that penguin species are highly susceptible to a number of ... increase over the last 50 years. However, issues of data not being published and a lack of formal risk ... System, means that our understanding is still patchy. A feather loss condition of unknown etiology ... requires urgent further investigation. Also of concern, is that a number of mass mortality events have ...
Meeting Document : WG-EMM-14/53 : Author(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)
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Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices
identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... : the limited number of depredating killer whales (n = 78 in 2012) may induce a dilution effect with ... negatively influenced by, iii) length of longlines: longer sets may provide killer whales access to a greater ... situations elsewhere. To a greater extent, this study is illustrative of how collaborative work with ...
Meeting Document : WG-FSA-14/P03 : Author(s): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline
Abstract: Depredation is a human-wildlife conflict over resource which often includes a ... indirect methods of assessment of depredated biomass over a 11-year period (from 2003 to 2013), both ... the two species co-occurred around vessels. The second method was new in a way that we used the ... only be implemented when a sufficient level of bycatch species occurs, provides strong support to the ...
Meeting Document : WG-FSA-14/10 : Author(s): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)
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Monitoring and managing the effects of environmental change on toothfish assessments
Abstract: This paper presents a ‘first-step’ proposal for CCAMLR to consider the effects of ... environmental conditions that are maintained over a number of years, which includes the effects of global ... can be used to identify changes that have occurred, or changes that may currently be occurring, as a ... CCAMLR’s fishery reports may be revised to include a new section on changes in model parameters and ...
Meeting Document : WG-SAM-18/22 : Author(s): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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The BROKE-West acoustic krill biomass survey of CCAMLR Division 58.4.2
is intended to produce a new estimate of B0 for this Division so that a revised precautionary catch ... limit can be established by CCAMLR.. The survey will be conducted from a single ship and will consist of ...
Meeting Document : WG-EMM-05/11 : Author(s): S. Nicol, S. Kawaguchi, T. Jarvis and T. Pauly (Australia)
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SKATE DIET AT SOUTH GEORGIA INDICATES BENTHIC HABIT OF KRILL
South Georgia, Southern Ocean. The diet of A. georgiana varied with skate size and between years ... presence of Antarctic krill in this skate’s diet indicates a benthic habit of this euphausiid species ... , which has hitherto been considered as occupying a purely pelagic niche. Author(s): C.E. Main and M.A ...
Meeting Document : WG-FSA-09/15 : Author(s): C.E. Main and M.A. Collins (United Kingdom)
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ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CPUE DATA
biomass in the Ross Sea. As a result of implementation of a dynamic production model, current biomass in ... about 32000 t. Author(s): D. Vasilyev, K. Shust, V. Tatarnikov, I. Istomin and A. Petrov (Russia) Title ...
Meeting Document : WG-SAM-09/12 : Author(s): D. Vasilyev, K. Shust, V. Tatarnikov, I. Istomin and A. Petrov (Russia)
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SPATIAL POPULATION MODEL USER MANUAL
Abstract: The Spatial Population Model (SPM) is a generalised spatially explicit age-structured ... -structured population using a range of observations, including tagging, relative abundance, and age frequency ... interpret output. Author(s): A. Dunn and S. Rasmussen (New Zealand) Title: SPATIAL POPULATION MODEL USER ...
Meeting Document : WG-SAM-09/17 : Author(s): A. Dunn and S. Rasmussen (New Zealand)
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The influence of the shape of meshes on the selective properties of trawls with special reference to Antarctic krill
trawls with a square- and diamond-shaped mesh, on the traumatic rate of krill passed through a mesh and ... remained in the trawl,on the survival rate. When trawls with a square-shaped mesh were used the highest ...
Meeting Document : SC-CAMLR-VIII/BG/09 : Author(s): Delegation of USSR
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Stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1991/91 season, using virtual population analysis
independent stock assessment surveys between 1986/87 and 1990/91. The results indicate a very different ... situation to assessments in 1989/90 with a decrease in overall biomass and recruitment over recent years ... catches in the near future on the basis of a target F is questioned Author(s): G. Parkes (United Kingdom ...
Meeting Document : WG-FSA-91/15 : Author(s): G. Parkes (United Kingdom)