Search results
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The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991: fishing effort distribution and interannual patterns
of the distribution of the krill fl eet and environmental conditions, mean monthly values of atmospheric pressure ... running means. Dotted line: trend. South Georgia 0.6 0.8 1 1.2 1.4 1.6 19 70 19 72 19 74 19 76 ... in the principal krill fi shing subareas. Solid line: 13-month running means. Dotted line: trend. Positive ... Paper Title: The Soviet krill fishery in the Atlantic Sector of the Antarctic from 1977 to 1991 ... fishery in the Atlantic Sector of the Antarctic from 1977 to 1992 are discussed. The total fishing effort ... from 1977 to 1991 was 50 086 vessel-days fished, in Subareas 48.3 (45% of the total for the period ... ), 48.2 (36%) and 48.1 (19%). Three distinct patterns in the distribution of monthly fishing effort ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 1–13 : Author(s): Litvinov, F.F., V.A. Sushin, G.A. Chernega and O.A. Berezhinsky
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Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change
(particularly the latter three) that mean that these species are susceptible to disturbance. How- ever ... change (Vaughan et al., 2003) coupled with the high levels of endemism (Brandt, 2012) mean ... shelves is consistent with the objectives for protection set out in CCAMLR Conservation Measure 91-04 ... such protection, long-term protec- tion for these areas could also be agreed through other means, as the text ... communities under ice shelves in the context of recent, rapid, regional climate change Abstract / Description ... % of the Peninsula’s glaciers have retreated in recent decades. Further ice-shelf collapse will lead to ... the loss of existing marine habitats and to the creation of new habitats, with consequent changes in ... need to study these in the absence of any other human-induced perturbation, this paper highlights why ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Author(s): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
: 50-150, 150-250 and 250-500 m. Mean relative biomass density was calculated without additional ... density stratification, for each depth zone, separately in each statistical subdivision. This means ... was observed in age-groups VIII-X (Skora, unpublished). Mean lengths of fish dropped from 37 cm in 1976/77 ... cm in 1985/86 (Kreft and Szynaka, 1986). An increase in mean length of fish in the last season ... Paper Title: Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77 ... 1976/77-1986/87. In most of the seasons analysed, the estimates covered a near-bottom layer in about 1 ... /6 of the area of the island shelf. Assessment results point to considerable variations in fish ... biomass density, in the studied period. Estimates of fish stocks biomass ranged from 43 to 158 thousand ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Author(s): Mucha, M. and W. Ślósarczyk
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer
and nearshore zones. The mean density of krill was low in the oceanic zone (8.5 g/m 2), intermediate ... frontal zone, having a mean density of 23.9 g/m 2 (411 000 tonnes), as contrasted with a low 3.7 ... frontal, neritic and nearshore zones. The mean density of krill was low in the oceanic zone (8.5 g/m2 ... abundant in the slope frontal zone, having a mean density of 23.9 g/m2 (411 000 tonnes), as contrasted ... . The survey area was divided into four zones: oceanic, slope frontal, neritic and nearshore zones. The mean ... , having a mean density of 23.9 g/m2 (411 000 tonnes), as contrasted with a low 3.7 g/m2 (163000 tonnes ... . 1. IN1RODUCTION The Antarctic Peninsula region is known as a region rich in krill and has been actively studied ... the survey period, excluding time spent on stations and towing sampling nets, the Mean Volume Back ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Author(s): Ichii, T., H. Ishii and M. Naganobu
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Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area
for Conservation of Nature and Natural Resources Avenue du Mont Blanc 1196 Gland, Switzerland 1. NOTOTHENIA ... by weight, the mean weight of fish caught is used where this is recorded. Where this is not recorded ... in the USSR samples. This means that the biomass estimates will overestimate the catchable biomass available ... , unless the quota were set very conservatively. Regulation of the maximum level of fishing mortality ... in the South Georgia area Abstract / Description: The stocks of Notothenia rossii marmorata and ... estimates from surveys by the FRG. These data indicate that the stock of N. rossii in 1985 was about 2.5% of ... Paper Title: Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari ... Champsocephalus gunnari in the South Georgia area are assessed using USSR age sample data and recent biomass ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 1-21 : Author(s): Cooke, J.G.
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
surveys were conducted in the region, where concentrations of myctophids were observed. Values of mean ... track was estimated by means of the formulae: p- Mo N- cr(L) (1) or P- Mo (2) w- 103crkg ... (L) then cr(L) = 41t · 100.1-TS(L) (3) crkg
= cr~) (4) where PN = mean density (fish per square mile ... ), Mo = mean echo intensity over the transect (number of echo readings covered) (MZ/square miles ... Paper Title: Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by ... acoustic surveys Abstract / Description: Acoustic surveys carried out in the summer and autumn of 1987 ... -1989 estimated the biomass of myctophids in the Atlantic sector of the Southern Ocean between 48° and ... species, Electrona carlsbergi, were found only in some limited areas. The bulk of the surveyed biomass of ... Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Author(s): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva
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Population genetic structure of Patagonian toothfish in the West Indian Ocean sector of the Southern Ocean
0.662 0.918 0.463 0.810 0.942 Mean N 38.3 36 36.8 28.3 34.5 38 24.3 Nallele 1.5 10.8 10 14.8 ... the null hypothesis does not mean that stock structuring does not exist within this sector, only ... . Conservation Biology, 14: 1287–1297. Williams, R., A.J. Smolenski and R.W.G. White. 1994. Mitochondrial DNA ... Paper Title: Population genetic structure of Patagonian toothfish in the West Indian Ocean sector ... structure of Patagonian toothfish (Dissostichus eleginoides) in the West Indian Ocean sector of the Southern ... of the Southern Ocean Abstract / Description: Molecular markers were used to investigate the stock ... Ocean. Four collections of D. eleginoides from Kerguelen (n = 1), Crozet (n = 1) and Prince Edward and ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 21–32 : Author(s): Appleyard, S.A., R. Williams and R.D. Ward
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
annuels B long terme. Monenb BbInOBa KpHnR H 0 6 0 6 W e ~ ~ a R MOAenb BbIn ... H YEcneHHocTH HccneAyeMoro sanaca. B HacToxmee BpeMX AHTKOM HCIIOJIb3yeT MOAenb BbInOBa KpHJIR AnR OnpeAeneHHx ... O ~ P ~ H H Y ~ H H ~ ~ Ha BMJIOB KPHnR, B TO BpeMR KaK GY-~ofleJIb TIpHMeHReTCR AJIR PaCveTa BbInOBa IInaBHHKOBbIX pb16 ... flnX flaHHOr0 IIpOrOHa. B MOAeJIM BbInOBa KPHJIR HCnOnb3yeTCR CMeWeHHaR OUeHKa ... Paper Title: Bias in the estimation of krill yield from using a deterministic formulation of the ... ) whether the stock became critically depleted in that trial and (ii) the status of the stock at the end of ... method for correcting this bias in the level of escapement. The GYM uses an unbiased estimate of the ... yield. The results show that the biased estimate results in a bias of the probability of critical ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Author(s): Constable, A.J. and W.K. de la Mare
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Diurnal variations in biological characteristics of krill, Euphausia superba Dana, to the west of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by a biologist-observer
, pa60TaBmero Ha npOMbICJIOBOM yt-IaCTKe OKOJIO lO:>KHbIX 0pKHeHCKHX O-BOB. Ha6JIIO,lleHH.5I BbInOJIH.5IJIHCb ... biologist-observer Abstract / Description: Investigations of diurnal variations in the size composition of ... trawl (9 to 12 tows per station, over one day). An increase in the total average size of animals caught ... in periods of light or darkness was noted at several stations. Increases in the proportion of males ... in the catch, as well as an increased difference between average length of males and females in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 201–222 : Author(s): Vagin, A.V., R.R. Makarov and L.L. Menshenina
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An assessment of the impact of krill fishery on penguins in the South Shetlands
IIllHrBIlHaMll B 0 BpeMX Ce3OHa pa3MHOXeHHX IIllHTBHHOB. fle~a6pbc~Hfi BbInOB KpIlnX OYeHb HH30K, OflHaKO ... BbInOBa, TO BeCbMa ManOBePORTHO, 9 T O c y w e c ~ ~ y m u @ i npoMbrcen ... Paper Title: An assessment of the impact of krill fishery on penguins in the South Shetlands ... the northern shelf of either Livingston or Elephant Island. In contrast, food consumption by penguins ... Abstract / Description: An assessment of the competition between the Japanese krill (Euphausia superba ... ) fishery and penguins during the penguins' breeding season (December to March) in the South Shetland ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Author(s): Ichii, T., M. Naganobu and T. Ogishima