Résultats de la recherche
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Potential nursery areas for fish in the Prydz Bay region
Paper Title: Potential nursery areas for fish in the Prydz Bay region Abstract / Description: A ... for the shelf area of the Bay to be a nursery ground for nototheniid and channichthyid fish. Nearly ... antarcticum. This species was abundant (up to 9 100 were caught in a 30 minute haul) especially near the shelf ... break. The dominant size class was of 45 mm standard length, which corresponds to an age of 1 ... 7 to 8 m high, and nets were towed at fishing depth for a standard haul duration of 30 minutes at 3 ... reasonably well with the 0+, 1+ and 2+ year groups established by Hubold and Ekau (1986) for P. antarcticum ... surprisingly for a mixed group of species there are two distinct size groups. 4. DISCUSSION It is clear ... . antarcticum catches. 375 -64 individuals/30 minute trawl 1 5 0 10 0 20 0 Q) "Cl 0 B 30 :;l ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 369–380 : Auteur(s): Williams, R.
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Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and Prydz Bay
Paper Title: Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and ... Prydz Bay Abstract / Description: A general framework for a joint international CCAMLR Ecosystem ... conditions. Background studies include hydrological and hydrochemical surveys as well as observations on ... is necessary to have data collected every year for the spring, summer, and autumn seasons and, in ... detailed analyses. This is especially true for data on the spatial distribution of physico-chemical ... particular years, the winter season as well. The total time dedicated to an observation series will depend ... on the scientific findings obtained each year. - 362 - 4. PARTICIPANTS OF THE MONITORING ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 355-362 : Auteur(s): USSR
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Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish
examined, the point estimate of total biomass increased from 5 to 30% for eight species and decreased by 20 ... Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish ... , areas of seabed within the 500 m isobath (i.e. 0-500 m) were computed for 50 m depth intervals. Areas ... results were compared to the previously reported estimates of Everson (1987) for the 50-150, 150-250 and ... ) for the 50-150, 150-250 and 250-500 m depth intervals. The updated estimates are about 1 424 (20%) n ... biomass. Of the nine species examined, the point estimate of total biomass increased from 5 to 30% for ... eight species and decreased by 20% for one. Une carte bathymetrique revisee des iles Orcades du Sud ... PaCCMOTPeHHbIX BNAOB OqeHKa o6qet ~ H O M ~ C C ~ I BO3pOCna Ha 5-30% AJIR 8 BHAOB M COKpaTHJIOCb Ha 20% AnR ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 197–204 : Auteur(s): C.D. Jones
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CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass
calculated for specific strategies were well correlated. Depending on the fishing strategy used, the number ... possible utility for evaluation of relative changes in krill biomass Abstract / Description: Key catch-per ... and primary data for their calculations, were examined. The main CPUE indices were catch per vessel ... fluctuations in haul duration due to the different fishing strategies used when targeting krill intended for ... 0 2 4 6 8 10 12 14 16 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Catch per vessel ... 1986 to 1991 (RIF statistics). 0 5 10 15 20 25 30 35 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... . 71 52 88 1 51 7 0. 20 66 14 0. 66 49 94 30 1 - - - - - - 24 . Su ba re ... a single subarea in a single year and a single month (0.601568); (iv) the correlation for total 10 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Auteur(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov
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A simple approach for calculating the potential yield of krill from biomass survey results
for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... median pre-exploitation level over a 20 year period of harvesting should equal 10%. The value of, λ ... Paper Title: A simple approach for calculating the potential yield of krill from biomass survey ... results Abstract / Description: Estimates are calculated for the parameter λ in the yield equation Y = λ ... 0.2 occurs during the 20 year harvesting period. (x) Repeat steps (ii» to (ix) for different values ... -exploitation level over a 20 year period of harvesting should equal 10%. The value of 'A, depends strongly on ... (A.2), for "years" y = 2 to 11. Thus, by "year" y = 10, all memory of the initial deterministic age ... which is typically less than 0.5. A basis for calculating an appropriate value for A. is set out in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Auteur(s): Butterworth, D.S., A.E. Punt and M. Basson
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Potential interactions between wandering albatrosses and longline fisheries for Patagonian toothfish at South Georgia
Paper Title: Potential interactions between wandering albatrosses and longline fisheries for ... Georgia wandering albatrosses (Diomedea exulans) and local longline fishing for Patagonian toothfish ... comprehensive use, we recommend that the South Georgia longline fishery for D. eleginoides should be managed in ... times of the year when the potential for albatross mortality associated with longline fishing might be ... contribution to reducing albatross mortality at a particularly critical time of year. For D. exulans at ... Island for their assistance in the research on satellite tracking of D. exulans in recent years ... , satellite-tracking, South Georgia, wandering albatross INTRODUCTION Over the last 20 years wandering ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Auteur(s): Croxall, J.P. and P.A. Prince
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Review of length-weight relationships for Antarctic krill
Paper Title: Review of length-weight relationships for Antarctic krill Abstract / Description ... : Length-weight relationships for krill, Euphausia superba (as well as relationships for other Antarctic ... euphausiid species), are listed for ash-free dry weight, dry weight, and wet weight. The accuracy of length ... discussed. Recommendations for possible uses of reviewed length-weight relationships are presented. File ... changes on length-weight relationship parameters is discussed. Recommendations for possible uses of ... have been established over the years for Antarctic krill Euphausia superba, but this information is ... information on the dominant maturity stages of kriH. Table 5 lists the few data available for other Antarctic ... 927mg 913mg 931 mg 912mg 860mg 796mg Data for February were collected in different years and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Auteur(s): Siegel, V.
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Reproduction of the mackerel icefish (Champsocephalus gunnari) and its implications for fisheries management in the Atlantic sector of the Southern Ocean
for fisheries management in the Atlantic sector of the Southern Ocean Abstract / Description ... March to the end of each year's meeting of CCAMLR which is usually held in late October or early ... : Available information on key reproduction parameters of the mackerel icefish (Champsocephalus gunnari) has ... offer very little protection to first spawners around South Georgia and juveniles and first spawners on ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 51–68 : Auteur(s): Kock, K.-H.
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Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg 1905) from the South Georgia Island shelf
age assessments of fish longer than 30 cm having an enlarged otolith centre. An age/length key for the ... Paper Title: Methods of age determination for mackerel icefish (Champsocephalus gunnari Lönnberg ... third quarter of the year was also calculated. File: 04-Frolkina.pdf ... analyzing data on length frequency distribution of fish in catches simultaneously with otolith radii of fish ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 37–49 : Auteur(s): Frolkina, Zh.A.
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Trawl selectivity for Champsocephalus gunnari
Paper Title: Trawl selectivity for Champsocephalus gunnari Abstract / Description: Data on trawl ... selectivity for mackerel icefish (Champsocephalus gunnari L.), were collected in 1981 in the South Georgia ... calculated using the collected data. It was found that the selectivity factor for 88.2 mm mesh size was 2.81 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 69–75 : Auteur(s): Efanov, S.F., G.E. Bidenko and V.A. Boronin