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Attribtuion of acoustic echoes to squid in the south Atlantic
by a pelagic trawl near the Antarctic Polar Frontal Zone in CCAMLR Subarea 48.3. This paper describes ... echoes recorded from the part of the water column traversed by the net. The trawl was restricted to a ... , Mavtialia hyadesi, were caught in a single haul made by a pelagic trawl near the Antarctic Polar Frontal ... traversed by the net. The trawl was restricted to a single depth zone which reduced the potential number ... often by predators were not the two commonly fished species in the South Atlantic (Il lex avgentinus ... and Loligo gahi), but a third species, sometimes caught as a by-catch with Illex argent inus , the ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Автор(ы): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley
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Preliminary results of research activities of RV Evrika in the Scotia Sea in January-March 1988
Sea and adjacent waters, accompanied by regular trawlings with an Isaac-Kidd trawl. The waters off ... in areas of the Atlantic Sector of the Southern Ocean identified for monitoring by CCAMLR. During the ... -disciplinary survey was conducted of the Scotia Sea and adjacent waters, accompanied by regular trawlings with ... identified for monitoring by CCAMLR. During the observation season the zonal drift of waters of the ... penetrated the eastern part of the area from the east and were characterized by surface temperatures ranging ... characterized by high assimilation values. In the photic layer, bacterioplankton production fluctuated between ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 215-229 : Автор(ы): Maklygin, L.I., A.S. Fedorov, V.N. Shnar, Yu.A. Shulyakovsky, I.V. Krasovsky, Yu.D. Shuvaev and A.V. Kromsky
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
Bertalanffy growth parameters obtained independently by three authors were used. Three cases were considered ... M estimated by fishing depth and hook type with different growth parameters although there were ... different cases, it was found that there were significant differences between fishing sites and between ... independently by three authors were used. Three cases were considered: fishing site, fishing depth and hook ... type. It was determined that there were no significant differences in M estimated by fishing depth ... found that there were significant differences between fishing sites and between curve hooks No. 14 and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Автор(ы): Moreno, C.A. and P.S. Rubilar
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
Antarctic Peninsula region Abstract / Description: A net sampling survey for krill was carried out by RV ... reached only a factor of 1:1.6. Krill mortality was calculated by linearized catch curve analysis and ... for K to M used by Priddle et al. (1988) was taken from clupeoid fish. Beverton and Holt (1959) found ... survey for krill was carried out by RV Meteor along the Antarctic Peninsula from 26 December 1989 to 14 ... calculated by linearized catch curve analysis and resulted a rate of Z = 0.88 (1989/90) and Z = 0.96 (1987 ... production. A comprehensive review of the present state of knowledge was undertaken by Miller and Hampton ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Автор(ы): Siegel, V.
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Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)
Subareas 48.2 and 48.3. During this period catches reported by the Soviet fleet amounted to more than 95 ... % of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... seasons within Subareas 48.2 and 48.3. During this period catches reported by the Soviet fl eet amounted ... to more than 95% of the total catch. The calculations were based on haul-by-haul data from the ... resources adopted by CCAMLR. Studies of the effects of krill removal on their stock size and on dependent ... ecosystem approach adopted by CCAMLR (SC-CAMLR, 1993 and 2001; Thomson et al., 2001; Hewitt and Low, 2000 ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Автор(ы): Kasatkina, S.M. and V.F. Ivanova
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Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea
seasons. Weather and sea-ice regimes varied notably, especially in 2003, which was characterised by ... extensive and persistent sea-ice and strong winds with snowfalls in December. First incubation trips by ... varied notably, especially in 2003, which was characterised by extensive and persistent sea-ice and ... strong winds with snowfalls in December. First incubation trips by females were signifi cantly longer ... chick loss (Muller-Schwarze, 1984). The Adélie penguin breeding cycle is strictly constrained by the ... foraging trips (Irvine et al., 2000). However, the degree to which trips lengthen is con- strained by the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Автор(ы): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi
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Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks
their exploitation are considered. Using data obtained by the scouting vessel Globus engaged in regular ... survey, followed by processing of the data obtained using diverse methods may be viewed as a better ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Автор(ы): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov
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Age determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula subarea (Subarea 48.1)
between false and annual checks in scales. Age determination by otolith cross sections proved to be the ... discussed. It is expected that the Otoliths/Scales/Bones Exchange System established by CCAMLR will help to ... (1980) found inconsistencies between age determined by otoliths and scales (scales indicated 1-2 years ... determination by otolith cross sections proved to be the most reliable method. Mean length data at age ... Otoliths/Scales/Bones Exchange System established by CCAMLR will help to eliminate discrepancies in age ... CCAMLR. Since 1986 it has been discussed by the Fish Stock Assessment Working Group at the follow-up ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Автор(ы): Barrera-Oro, E.
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Statistical problems in krill stock hydroacoustic assessments
method is most appropriate, this is made even more difficult by the fact that most survey methods assume ... non-stationary populations, which have not been well addressed by present techniques. However, this ... difficult by the fact that most survey methods assume the population is fixed in space, relative to the ... well addressed by present techniques. However, this does not invalidate the use of available methods ... estimates of abundance by depth and distance along a survey track. These relative estimates of abundance ... by adjusting the estimate by the ratio of the old and new target strengths. Surveys are conducted ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Автор(ы): Macaulay, M.C.
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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
techniques, from 1991 back to 1977. The predicted age structure, dominated in recent years by the 1987 year ... is recommended, based on the results of surveys by Falklands Protector in 1990/91 and 1991/92. File ... . The predicted age structure, dominated in recent years by the 1987 year-class (1 year olds in 1988 ... the results of surveys by Falklands Protector in 1990/91 and 1991192. Resume Suite a l'apparente ... stock size in 1990/91, all of these VPAs indicated that the biomass that year was dominated by 4 year ... distribution estimated by the VPA for that year (Figure 1). Concern was expressed at WG-FSA-91 that the large ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 49–79 : Автор(ы): Parkes, G.
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