Search results
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Haul data analysis from the Polish krill fishery in 1997–1999
concentrations occurred deeper, at depths of 10-140 m, while at night the concentrations were closer to the ... surface, at depths of 10-100 m. The day catch rates were several times higher than at night (4.35-9.33 ... Abstract: The analysis of fishing data obtained from the ship’s log of the Polish commercial ... vessel M/T Pollux facilitated the characterization of catches and concentrations of krill between ...
Meeting Document : WG-EMM-00/17 : Author(s): E. Jackowksi (Poland)
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Survey estimates of recruitment of toothfish in Subarea 48.3
Abstract: We reanalysed 16 groundfish surveys at South Georgia to determine whether recruitment ... several unexplainable errors. A new, corrected, series of recruitment estimates was derived using new ... procedures and 6 strata (3 depth strata each at Shag Rocks and South Georgia). It is easy to spot, visually ... , the modal progression of peaks in the length densities corresponding to cohorts assessed by sequential ...
Meeting Document : WG-FSA-SAM-04/16 : Author(s): Collins, M., Wakeford, R.C., Moir-Clark, J., Belchier, M., Agnew, D.J.
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Diurnal changes of some biological characteristics of Euphausia superba Dana in swarms (westward of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by biologist-observer)
). Increasing of average size of animals during light time was observed at several stations. These changes are ... of swarms. When diurnal migration are absent (particularly at most later season) the diurnal changes ... with drift of swarm, but not with progress of life cycle at winter postspawning non-feeding season ... Abstract: Investigations of diurnal changeability of size composition of E. superba was carried ...
Meeting Document : WG-KRILL-92/09 : Author(s): A.V. Vagin, R.R. Makarov and L.L. Menshenina (Russia)
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Krill caught by predators and nets: differences between species and techniques
seabird and seal predators at South Georgia at the time of peak local demand in February. Author(s): Hill ... Abstract: Samples of Antarctic krill collected from six seabird species and Antarctic fur seal ... during February 1986 at South Georgia were compared to krill from scientific nets fished in the area at ... the same time. The length-frequency distribution of krill was broadly similar between predators and ...
Meeting Document : WG-EMM-96/09 : Author(s): Hill, H.J., Reid, K., Trathan, P.N., Croxall, J.P.
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Biological and fishery information for skates in Division 58.5.2
estimated for B. irrasa at 865 mm and the length at first spawning (Lm50) at 1210 mm. Estimates of abundance ... Division 58.5.2. Estimates of growth calculated from trawl-tagged, recaptured B. eatonii were 15 mm per ... slow growing. Composition of the skate bycatch by fishery and depth zone is described. Length-weight ... equations are provided relating total length and weight by species. The length at first maturity (L50) was ...
Meeting Document : WG-FSA-05/70 : Author(s): E.M. van Wijk and R. Williams (Australia)
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Is toothfish catch correlated with the catch of vulnerable benthic invertebrate taxa?
benthic invertebrate catch rates at a longline segment level. Analysis of the data available showed no ... evidence that the presence of any of six VME taxa was related to Antarctic toothfish catch at the scale of ... relationship between total VME taxa weight and toothfish catch at the scale of a longline set, up to 10km. Our ... Abstract: Accurate estimation of the true impact of bottom fishing on vulnerable marine ...
Meeting Document : WG-EMM-10/27 : Author(s): S.J. Parker and M.H. Smith (New Zealand)
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By-catch analysis as a part of progress report for the research fishery of Dissostichus spp. in Subarea 48.6 by Japan and South Africa during 2012/13–2016/17
AIC criteria indicates that the number of by-catch GRV individuals is higher at southern research ... highest at research blocks 48.6_1. As temporal change of by-catch, only GRV shows obvious decrease in ... Abstract: This paper reports the preliminary results of by-catch analysis as a part of progress ... report for the research fishery of Dissostichus spp. in Subarea 48.6 by Japan and South Africa during ...
Meeting Document : WG-SAM-17/44 : Author(s): T. Okuda, S. Somhlaba and T. Ichii
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Persistent organic pollutants in stomach contents of Adélie penguins from Edmonson Point (Victoria Land, Antarctica)
Abstract: Stomach contents (n=43) of Ade lie penguin (Pygoscelis adeliae) nesting at Edmonson ... revealed concentrations of polychlorinated biphenyls (PCBs), including coplanar congeners, at 1.01 ng/g wet ... wt, pp'DDE at 5.80 ng/g wet wt and and hexachlorobenzene (HCB) at 4.70 ng/g wet wt. Average ... input of these persistent organic pollutants (POPs) through diet also was evaluated. The following ...
Meeting Document : WG-EMM-03/58 : Author(s): S. Corsolini, S. Olmastroni, N. Ademollo, G. Minucci and S. Focardi (Italy)
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Introduction of the recent Korean research activity and future plan on penguin breeding and behavior
, in collaboration with other partners, is also pursued in the Ross Sea sector, which is designed to examine the prey ... , in collaboration with other partners, is also pursued in the Ross Sea sector, which is designed to examine the prey ...
Meeting Document : WG-EMM-15/12 : Author(s): Delegation of the Republic of Korea
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Physical forcing in the southwest Atlantic: ecosystem control
temperature at South Georgia shows the presence of high levels of autocorrelation, with periodicity evident in ... temperature anomalies at lag periods of approximately 3 to 4 years. Crosscorrelation analyses with temperature ... . Biological variability is also apparent at South Georgia, being evident in data from a suite of top predators ... Abstract: In the southwest Atlantic sector of the Southern Ocean, temporal variability in the ...
Meeting Document : WG-EMM-04/34 : Author(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)