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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 ... in the frontal (37.3 g/m 2) and neritic (28.1 g/m 2) zones, and extremely high in the nearshore zone ... (134.7 g/m 2). The last zone corresponds to the shelf break: or the shelf area where topographic eddies ... abundant in the slope frontal zone, having a mean density of 23.9 g/m 2 (411 000 tonnes), as contrasted ... . 2. MA1ERIALS AND METHODS The cruise of RV Kaiyo Maru was conducted in two stages (Ichii et al ... ., 1991), although this paper deals only with research activities of the second leg. Leg 2 covered the ... the depth range of 30 to 40 m in this region (Anon., 1989). Therefore each buoy was deployed with a ... curtain drogue (4 m x 1 m) at 30 m depth to assess this subsurface circulation. 2.2 Hydroacoustic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Автор(ы): Ichii, T., H. Ishii and M. Naganobu
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Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991
Seefischerei, Bundesforschungsanstalt fur Fischerei, Palmaille 9, D-2000 Hamburg 50, Germany 2 British ... the maturity process of the species around South Georgia in the 1990/91 season. 2 ... according to a 5-point scale: 0- empty, 1 - 1/4 full, 2- 1/2 full, 3 - 3/4 full, 4- 4/4 full, stomach wall ... (1) or no food (0): Degree of Fullness n % 0 1306 33.7 1 839 21.6 2 777 20.0 3 803 20.7 4 152 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Автор(ы): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski
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CCAMLR ecosystem monitoring and management: future work
scale during the early stages of the fi shery and to 0 1 2 3 0 1 2 3 D en si ty 0 10 20 30 ... (1 99 5) ; T ho m so n et a l. (2 00 0) M an ge l a nd S w it ze r (1 99 8) C ... on st ab le (2 00 1) E ff ec t d ir ec ti on C lo se d fo od -w eb m od el w ... it h ef fe ct s of c ha ng es in pr ey o n pr ed at or s an d th e co nv er ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Автор(ы): Constable, A.J
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Champion during Phases 1 and 2 of the experimental crab fishery were analysed using generalised additive ... data from the Phase 2 depletion experiments did not have significant negative slopes. The insignificant ... tagged and released during Phase 2. Four of the tagged crabs were recovered, and these crabs were at ... miles/day. Mark-recapture estimates of standing stock and density were made for the area around Phase 2 ... Clzainpion during Phases 1 and 2 of the experimental crab fishery were analysed using generalised additive ... catch data from the Phase 2 depletion experiments did not have significant negative slopes. The ... 000 crabs were tagged and released during Phase 2. Four of the tagged crabs were recovered, and these ... area around Phase 2's third depletion square. The assumptions of the mark-recapture model were ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Автор(ы): Watters, G
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Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)
each of the exploited stocks, some new data which have been acquired since these works. 2. METHODS ... classes 2 and 3, and therefore will have hatched from layings of adult stock of three or four years ... (Figure 2) as had been done for the cohorts 1979 and 1982 (Duhamel, 1987). The average length observed ... year to the next (Table 2) in relation to the availability of other exploited species, particularly ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Автор(ы): Duhamel, G.
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Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics
grenadiers occurring in the Ross Sea region at depths between approximately 500 and 2 100 m where fishing ... continental slope (SSRUs 881H, J and K) and from Subarea 88.2 (SSRU 882H) (Figure 2; Table 1). Otolith ... best discrimination was given using equation 1 (coef- ficients in Table 2 based on fitting to all data ... Table 2 for the K-fold validation case. The ROC for this discriminant function is shown in Figure 6 ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Автор(ы): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott
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Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01
South Georgia. Krill density in the western box in the early-season survey was very low (3.5 g m-2) but ... rose significantly (P = 0.020) by midseason (to 34.7 g m-2). In a pattern that is consistent with ... in the eastern box (80.4 g m-2). Analysis of transect data obtained in the western box in the ... -2 that was intermediate between the eastern and western areas. The size structure of the krill in ... 0.70 West W31 30 Dec 2000 76.26 10.52 West W41 30 Dec 2000 81.50 0.61 Mid West W11 2 Jan 2001 80.8 ... box in the early-season survey was very low (3.5 g m-2) but rose signifi cantly (P = 0.020) by mid ... - season (to 34.7 g m-2). In a pattern that is consistent with observations from previous years, krill ... density in the western box in the mid-season survey was less than that in the eastern box (80.4 g m-2 ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 71–82 : Автор(ы): Brierley, A.S., C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst
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Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
(January 1993) and biomass densities range from 2.5 g/m 2 to 134.5 g/m 2. Average biomass and average ... density over the 13-year period were 1 703 x 103 tonnes and 53.2 g/ 2. File: 01hewitt-demer.pdf ... OqeHKH IIJIOTHOCTH ~ H O M ~ C C ~ I HaXOjqIITCR B IIpeAenaX OT 2,s r/M2 no 134,s r/M2. CP~AHRII 6 a o ... krill target strength (-37.70 dB/kg for 40 to 45 mm krill, Hewitt and Demer, 1993 - Table 2) results in ... surveys (30 mm and 41 mm). Klindt's biomass estimate for the 1985 survey may be adjusted by a factor ... , estimated biomass densities of krill in the Elephant Island area decreased monotonically from 134 g / m 2 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Автор(ы): Hewitt, R.P. and D.A. Demer
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Acoustic estimates of krill density at South Georgia, 1981 to 1998
from year to year over that time, ranging from ≈ 2 to ≈ 150 g m-2 (fresh mass). The 1982, 1991 and ... % confidence limits <15 g m-2). For five of the summers between 1990 and 1998 it was possible to calculate ... fluctuated widely from year to year over that time, ranging from =2 to =l50 g m-2 (fresh mass). The 1982 ... annee, entre "2 et "150 g me2 (poids vif). Les saisons d'ete austral de 1982,1991 et 1994 se ... l'intervalle de confiance 5 95%
2). Pour cinq des et& de 1990 B 1998, il est possible de calculer des ... IIepMoAoB C 1981 KO 1998 r. B TeqeHHe 3TOr0 IIepHOAa nnOTHOCTb KpHnX y OCTpOBa MeHXJlaCb OT =2 ,Q0 =l50 r ... Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Автор(ы): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson
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The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery
avant que ne soit prise la d6cision de mettre en place de nouveaux sites du CEMP. B ~ a C T 0 2 ~ e f ... plotted in Figure 2 for the Mawson and Davis foraging trips by satellite for up to five breeding regions ... past harvests of krill taken within a grid of 0.5" latitude by 1" longitude (approximately 30 km by ... 30 km) between 1972 and 1994. They are taken as indicating the consistent presence of harvestable ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Автор(ы): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson
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