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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
bottom longline in the Ross Sea during the 2001 and 2002 fishing seasons was analysed (3 937 and 5 426 ... longline in the Ross Sea during the 2001 and 2002 fi shing seasons was analysed (3 937 and 5 426 stomachs ... les saisons de pêche 2001 et 2002 (examen respectif de 3 937 et 5 426 estomacs). Les poissons de ... (Permitin and Tarverdiyeva, 1972; Tar- verdiyeva, 1972; Zhivov and Krivoruchko, 1990; McKenna, 1991; García ... pesca de 2001 y 2002 (3 937 y 5 426 estómagos, respectivamente). Los peces muestreados en 2001 fueron ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Autor(es): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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Using ecosystem monitoring data to detect impacts
using monitoring data with no control sites. These methods assess either (i) the expected probability of ... decline in Antarctic fur seal (Arctocephalus gazella) pup production at South Georgia from the early 1990s ... within a few years of its onset, but a fixed reference point method could have provided this sustained ... error (false positives and false negatives combined) is lowest with fixed reference point methods. The ... : Method 4 with inference based on changes in frequency: the observed proportion of years in an n-year ... (Arctocephalus gazella) pup production at South Georgia from the early 1990s within a few years of its onset ... two out of three successive years. The reference period for Method 3 was also three years. Results ... persistent indications of the impact a few years before Method 2 (1995 and 1997 respectively) with Pcrit ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Autor(es): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda
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Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999
summer from 1997 to 1999. The density of concentrations varied with area and season. The densest ... mean density varied from 11 to 31 370 specimens per 1 000 m 3. At night, krill concentrations were ... between February and April (this period varied with year), and then in the South Shetlands area (i.e ... 1999. The density of concentrations varied with area and season. The densest concentrations were ... in one concentration can be as dense as 30 000 specimens per m-3 of water (Hamner et al., 1983 ... ). Hardy and Günther (1935) and Marr (1962) produced a diagram showing the distribution of krill ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Autor(es): Jackowski, E
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Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area
its pre-exploitation biomass, while the stock of Champsocephalus gunnari has fluctuated greatly with ... the later years, it is reasonable to assume a common age-specific catchability function for both ... reduction in the stock in the early 1970's led to only a 3-fold increase in per capita recruitment. Since ... . The age at recruitment is 3-4 years, hence up to two consecutive years of heavy fishing can occur ... of the fishery compared to later year classes. However, in selecting an age-specific natural ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 1-21 : Autor(es): Cooke, J.G.
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
chlorophyll a. Water circulation was studied with satellite-tracked buoys equipped with curtain drogues ... December 1990 to early February 1991. This increased krill density in early February 1991 (157 g/m 2) was ... this region with the yearly catches of 10 000 to 70 000 tonnes for the past eight years. This region ... December 1990 to 3 February 1991. This increase rate is quite comparable with 5-fold increase observed ... abundance was low (compared with other seasons) during the first half of summer (December to early February ... long (5 to 9 days compared to 1 to 3 days later in the season) (AMLR, 1991). Krill fishery data from ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Autor(es): Ichii, T., H. Ishii and M. Naganobu
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Exploratory fishing for Dissostichus spp. in the Antarctic region (Subareas 48.1, 48.2 and 88.3)
system) were used for the operation, with variable quantities of fish hooks (1 440 to 4 320), No. 9 ... 'S). Yields of Dissostichus spp. were very low in the three subareas, with values of only 5.7 g ... operation, with variable quantities of fish hooks (1 440 to 4 320), No. 9 Mustad Kirby type, set between ... very low in the three subareas, with values of only 5.7 g/hook (Subarea 88.3), 19.1 g/hook (Subarea ... / hamecon. B @ e ~ p a n e - ~ a p ~ e 1998 r . B paMKax p a 3 p a 6 0 ~ a ~ ~ o 1 - o Y H ~ H npoeKTa ... a y s e ~ a (70°38'm.m.) no o-BOB K n a p e ~ c H 3 n e @ a ~ ~ (6I014'm.ru.), B TO BpeMx KaK ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 1–17 : Autor(es): Arana, P.M. and R. Vega
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Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)
D. mawsoni that had been injected with oxytetracycline some years before recapture. The six ... , 2.5 and 3.5 years were estimated to be 14, 28, 37 and 46 cm total length (TL) respectively. These ... estimates agree with growth curves calculated previously from a sample of data that was large but lacked any ... fish younger than 3.5 years. Counting translucent zones in the otoliths of D. mawsoni appears to be a ... between 0+ and 3+ years. A length-frequency distribution of the aged fi sh by estimated year class ... early years of growth. However, because of the lack of small D. mawsoni, it was not possible to link ... released since 1972 (DeVries and Eastman, 1998). Some of these tagged fi sh were also injected with ... sections from 1+, 2+ and 3+ fi sh are shown in Figure 3, with the positions of the translucent zones ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Autor(es): Horn, P.L., C.P. Sutton and A.L. DeVries
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
000 legal-sized male crabs/n mile 2, and there was a lot of uncertainty associated with these ... equal to 1.0 (see Figure 3, middle panel). Consistent with such predictions, all of the hauls made ... smooth terms which were retained in equation 1 were reparameterised with 3 df. The 3 df model was ... different from a simple linear term (p < 0.05). Predictions from equation 3 are illustrated in the middle ... with gamma errors and log-link to the positive CPUE data. The middle panel shows the trend in predicted ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Autor(es): Watters, G
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The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design
will take several years and will result in a significant increase in the knowledge of krill length ... of the Convention. Full analysis of the results of the CCAMLR-2000 Survey will take several years ... ~ K ~ ~ ~ H O M ~ C U J T ~ ~ H ~ I X 3 0 H nnaH CbeMKH npeAyCMaTpHBan 4 CpefiHeMaCUI~a6~blX ?OHbI ... O I I O J ~ O ~ X ~ H P I R KaXAOrO CbeMOYHOrO pa3pe'3a 14 IIOKa3bIBaIOTCR 3 a n n a ~ ~ p o ~ a ... yYeHbre m 3 MHOrHX ApyriIX CTpaH-YJIeHOB AHTKOMa Ii Mernny~apon~ofi Kl1~060fi~0~i KOMMCCIltl (MKK). 3 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Autor(es): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.
; constant catch ODE (CCODE) model uses a new total mortality ODE with constant within-year catch per unit ... process error in predicted catch-at-age numbers. Simulations assumed 1 000 releases per year over 12 years ... , using multiple cohorts and multiple years of catch-at-age and aged mark-recapture data was tested using ... with recruitment average of 2 million with annual coefficient of variation (CV) of 0.3 and annual catch ... ) with a0 set to 3 years, as in the base-line simulations, but fitting the BODE model with a0 set to ... predicted catch-at-age numbers. Simulations assumed 1 000 releases per year over 12 years with ... fishing years. In order to apply equations (3) and (4) recursively from the start of fishing at year y ... series of YCS, Γ pfy , for the pre-fishery (pf) years combined with the first year of the fishery ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Autor(es): Candy, S.G.