Résultats de la recherche
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Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas
stocks at South Georgia Island (Subarea 48.3) and Kerguelen Island (Subarea 58.5) have been depleted by ... severely depleted, and the Commission agreed that only small, unavoidable by-catches should be taken. The ... is to fit a mixture of lognormal distributions by a modified kernel method to recruitment data and ... employed is a variation of the kernel technique. The distribution to be estimated is approximated by a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Auteur(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel
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New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands
the species has recently been investigated by means of fishery-independent programs (Koubbi et al ... . The inner shelf (depths: 75 to l10 m) was investigated every three months both by bottom trawl (31 m ... taken both by bottom trawl (30' duration; 12 to 20 stations, depending on weather and bottom ... conditions, total 150 hauls) and by Bongo net (oblique tows in the water column from bottom to surface, 28 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Auteur(s): Duhamel, G
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove
continuous sampling period of 24 years which began in 1983, and from 2001 to 2003 at Harmony Cove (HC). By ... of N. rossii and G. gibberifrons, which are analysed by fi tting an ANOVA model and described using ... means by each year are presented in Figure 1. It should be noted that these estimates have been ... Notothenia rossii and Gobionotothen gibberifrons relative to the catches of Notothenia coriiceps, by catch ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Auteur(s): Barrera-Oro, E.R. and E.R. Marschoff
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Survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
first post-exploitation record of successful pup production being reported by O'German (1961) at ... by species, with no differentiation made between age and sex classes except for fur seals. At ... sites where fur seal pups were present, observers counted living and dead pups by censusing colonies ... 1987 and were performed by navigating inflatable boats near shore. All ice-free coasts of the South ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 427-440 : Auteur(s): Bengtson, J.L., L.M. Ferm, T.J. Härkönen, E.G. Schaner and B.S. Stewart
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Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program
(SC-CAMLR). In 1988 this culminated in the publication by the Working Group for the CCAMLR Ecosystem ... confidence. This was recognised by the Scientific Committee (SC-CAMLR-VII, paragraph 5.22 (i) and (ii)) and ... led to the instructions for sensitivity analysis set out by the CCAMLR Secretariat and Convener ... /89 breeding seasons. Though assessed and presented under the parameter headings given by CCAMLR ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Auteur(s): Whitehead, M.D.
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Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys
distinguish between these two characteristics of prey distribution. SURVEY CONSTRAINTS IMPOSED BY THE ... such surveys is constrained by the predator foraging periods; these are : Adelie penguin ... guarding phase is completed by about 2 Jan and creche phase by about 21 Jan. A survey timed to last for ... predators will search radially up to a distance of about 100 km. By analogy with predator foraging ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Auteur(s): Everson, I.
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Investigations of required sampling regimes for environmental parameters
necessary to distinguish between changes in the monitored system induced by harvesting of particular ... , paragraph 40). Two categories of environmental parameters were defined by WG-CEMP (1989): those which ... examines several meteorological parameters measured at Davis Station, collected by the Australian Bureau ... " and Yearly. Daily cycles are triggered by daily heating and cooling. "Depressional" cycles are ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Auteur(s): Agnew, D.J.
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Distribution and relative abundance of juvenile icefish (Champsocephalus gunnari) from a trawl survey of the South Georgia shelf in June–July 1985
-group) mackerel icefish was conducted by AtlantNIRO in 1985. MATERIALS AND METHODS A trawl survey ... Nmile protected zone and 500-m isobath was sampled by trawls. 75 hauls were made and a 24 hour ... approximately the same depth - 59 - Juvenile mackerel icefish abundance indices were calculated by the ... the abundance indices for juvenile mackerel icefish is indicated by the variance coefficient of 38 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 55-63 : Auteur(s): Boronin, V.A., G.P. Zakharov and V.P. Shopov
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CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island
. Additionally, after the co-operative survey, krill biomass on this fishing ground was estimated by an echo ... estimated biomass of krill by the echo integrator on board RV Kaiyo Maru was 601 297 tonnes in the upper ... fished by Japanese trawlers. If krill advected from adjacent areas, the percentage would be lower ... simulation study of krill fishing by an individual Japanese trawler. Selected Scientific Papers, 1988 - Part ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Auteur(s): Endo, Y. and T. Ichii
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Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in the southern Polar Front area (the area to the north of South Georgia is used as an example)
majority of which are characterised by circumpolar distribution. The most abundant myctophid species are ... density Mean density by volume 11 I: 11 , : i I i :/ i / / I I ·, . .' Ps =51.9 t ... in density by volume: at 17:00 - Pv=0.03 specimens/m3 or 0.16 g/m3. , ' I I ! , , i I ' I ... /mile2; at 12:00 - Ps =24.8 tonne/mile2• Change in density by volume: at 7:00 - Pv=O.01 specimens/m3 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 337–367 : Auteur(s): Kozlov, A.N., K.V. Shust and A.V. Zemsky