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Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia
allows simulation of releases by box over multiple years. The model performed as expected with test ... over multiple years. The model performed as expected with test situations. It produced a near-perfect ... rates of tagged toothfish at South Georgia are almost certainly relatively low because, in common with ... boxes; for ease of analysis within databases, rectan- gular areas were chosen, with varying dimensions ... 000 m contour with two junctions, at boxes 18 and 23, joining boxes 1 and 77 respectively. Fish ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Автор(ы): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark
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Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001
Subarea 48.3, which includes satellite surveys with GOES-E, Meteosat and in situ monitoring, together with ... appraised by comparing them with krill catches obtained under various hydrological conditions. In comparison ... with the early 1990s, the period from December to February in the late 1990s and early 2000s showed a ... Current (ACC) infl uence. Under these hydrological conditions, krill that drifted along with Weddell Sea ... includes satellite surveys with GOES-E, Meteosat and in situ monitoring, together with further analysis ... appraised by comparing them with krill catches obtained under various hydrological conditions. In ... comparison with the early 1990s, the period from December to February in the late 1990s and early 2000s ... drifted along with Weddell Sea waters failed to form stable concentrations on the shelf and was ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Автор(ы): Vanyushin, G.P
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Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds
commercial fishery, with a nominal mesh size A = 80 mm and A = 100 mm, made of double twines with a thickness ... sufficiently good level seems possible as a result of the application of webbing with permanently open meshes ... for codend construction. The most difficult matter will be preparing a codend with proper selectivity ... carried out for two types of steelon codends used in commercial fishery, with a nominal mesh size A = 80 ... mm and A = 100 mm, made of double twines with a thickness of 4.2 mm. The studies covered 6 major ... seems possible as a result of the application of webbing with permanently open meshes for codend ... construction. 4. The most difficult matter will be preparing a codend with proper selectivity properties for ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Автор(ы): Zaucha, J.
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Management and uncertainty: the example of South Georgia
: Decisions on fishery management are often made with some degree of uncertainty in scientific advice. Such ... comparison of the immediate and long-term effects of any one proposed measure with those of any other measure ... (including the effects of doing nothing) could provide a procedure for providing advice that could cope with ... often made with some degree of uncertainty in scientific advice. Such uncertainty is unlikely to be ... the immediate and long-term effects of anyone proposed measure with those of any other measure ... with uncertainty. The question is addressed specifically in terms of the fishery of Notothenia ... could say with absolute certainty that a complete closure for x years would rebuild the stocks to a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Автор(ы): Gulland, J.A.
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An assessment of the impact of krill fishery on penguins in the South Shetlands
. Compared with the level of biomass (≥200 x 10 3 tonnes) and its variability (the order of 100 x 10 3 ... within the preferred fishing areas during the breeding season. Compared with the level of biomass (2200 ... fishery began with a low catch in late December, followed by catches of 3 300 to 10 000 tonnes/lO-day ... the history of the Japanese krill fishery. The 1990/91 fishing season began with very low catches ... began with a low catch in December, followed by roughly constant catch levels of 4 300 to 5 800 tonnes ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Автор(ы): Ichii, T., M. Naganobu and T. Ogishima
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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
krill fishery, it is shown that the catch-per-haul variables are associated with the fishing regime of ... the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ... operations very short hauls (under 15 minutes) are practised. Such fishing practice, together with ...
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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Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)
ELEGINOIDES) G. Parkes Marine Resources Assessment Group 8 Prince's Gardens, South Kensington London SW7 ... Casilla 567, Valdivia, Chile G. Pilling Marine Resources Assessment Group 8 Prince's Gardens, South ... 1989/90. Since then the reported catch has been in the region of 3 000 to 4 000 tonnes, with the ... size, and that this reduction would be indicated by a significant decline in an abundance index with ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Автор(ы): Parkes, G., C.A. Moreno, G. Pilling and Z. Young
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
SECTOR S.J. Lockhart and C.D. Jones US Antarctic Marine Living Resources Program NOAA Southwest ... land-based stations, and have been limited by very small spatial scales with little attention given ... communities for com- parative purposes, with an ultimate aim of identi- fying and understanding broader-scale ... (Subarea 48.2), a four-panel bottom trawl (HBST) with vented V-doors (Net Systems Inc., Bainbridge Island ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Автор(ы): Lockhart, S.J. and C.D. Jones
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Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000
be exploited together with new known data (Sivia, 1996). Furthermore, Skilling (1988) has shown ... Research Group Gatty Marine Laboratory University of St Andrews Fife KY16 8LB, United Kingdom Email ... converge on a reconstruction that is most consistent with the observed data and for which the entropy is ... consistent with common sense (Paris, 1994). The MaxEnt technique offers an advantage over geostatistical ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Автор(ы): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
of the main prey items in the diet of C. gunnari, as well as of the proportions of stomachs with ... 1996 and 1997 (in line with years of high krill abundance). This information is well in accord with ... . gunnari, as well as of the proportions of stomachs with/without food in Subarea 48.3, did not show a ... (below years of historically high abundance), and high in 1996 and 1997 (in line with years of high ... krill abundance). This information is well in accord with independent information from acoustic surveys ... ., 1988; Kock et al., 1994a). Together with other Diet of C. gunnari at South Georgia Table 1 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Автор(ы): Barrera-Oro, E., R. Casaux and E. Marschoff
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