Résultats de la recherche
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
account for 20% of the total mass (Kock, 1992; Everson et al., 1996). Arising from this, we envisage two ... percentage increases, in the case of female Antarctic fish, to over 20% in the months leading up to ... from 13 731 C. gziizizari sampled in 65 months on the South Georgia shelf and 2 160 sampled in 20 ... : South Georgia: Aug-Oct 72 Nov 77 + Jan 78 Nov 78 Dec 80-Jan 81 No sample (Feb 81 normal) Nov 82 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Auteur(s): Everson, I. and K.-H. Kock
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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
°28'S 60°46'W); Admiralty Bay, King George Island (62°10'S 58°30'W); Humble Island (64°46'S 64°06'W ... , unpublished Cape Shirreff, Livingston Island (62°28'S 60°46'W) CHPE 1997–2006 W.Z. Trivelpiece and S.G ... . Trivelpiece, unpublished Cape Shirreff, Livingston Island (62°28'S 60°46'W) GEPE 1998–2006 (exc. 2005 ... more than half the time (35 out of 64), but the interpretability of the normal distribution ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program
(30%) 4 6 418 0.9 88 25 7 4 71 20 0.9 72 1 9 9 71 1 8 8 Table 4 ... <.) '--' >-, <.) C 4) :l G' 4) :..... iJ... 60 e 50 40 30 20 10 I o~-~- 1.50 1.75 2.00 2.25 ... Difference (d) ( 1 0 %) 34 54 (% Current Value) (20 %) 9 1 4 (30%) 5 7 Sample sizes required for five ... years of monitoring and a = 0.10 Smallest Difference (d) (10%) 33 53 (% Current Value) (20 %) 9 1 4 ...
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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Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990
=21 cm. W=60 g. Age 2+years. 17 February 1990. Figure 4: Vertebrae of C. gunnari taken by RV ... HX B03paCTa. Bonp. HXTHOJIOrHH, T. 20, BbIn. 6 (125): 941-944. K01.JKHH, n.H. 1985. AHaJIH3 ... ., 20 (2): 39-47. KOCHKIN, P.N. 1986. A rapid method for estimating mean length of Champsocephalus ... + 6+ 7+ 8+ 9+ 14-21 21-27 27-33 32-37 35-41 38-46 47-52 54 55 24 23 28 21 16 10 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Auteur(s): Kochkin, P.N.
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Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean
52 ± 4% of the total biomass. The mean density of M. carinatus on BANZARE Bank was 176 ± 14 kg/km 2 ... occurrence of larval and juvenile stages of rat tail fishes (Family Macrouridae) from 60°N, 20°W and 53"N ... of the catch comprised (by weight): invertebrates (35%), cephalopods (4%), Antimora rostrata (3 ... had a mesh size of 60 mm and the net was fished hard against the bottom for the duration of all ... Conformal Scale 1 : 20 000 000 Standard Parallels: 52-33' and 53"33' Central Meridian 74"E 0 500 l000 km ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 171–178 : Auteur(s): van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb
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Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area
) are included in this paper. Trammel nets (length 25, 35 and 50 m; width 1.5 m; inner mesh 2.5 cm ... approximately one year. Barrera-Oro et al. 62"s 60°W (a) S h e t l a n d Figure 1: (a) The South ... Shetland Islands. Cybium, 20 (1): 37-45. Barrera-Oro, E.R. and R.J. Casaux. 1998. Ecology of demersal ... , South Shetland Islands, Antarctica. Polar Biol., 11: 63-72. Casaux, R.J., N. Coria and E.R. Barrera ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 43–52 : Auteur(s): Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux
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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
selectivity functions. 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Immature selectivity Age (y ... ) Se le ct iv ity 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Truncated mature selectivity ... Age (y) 0 10 20 30 40 50 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Mature selectivity Age (y) 2000 2010 ... . 60 Based on a method by Powell (1979), Wetherall et al. (1987) also suggested an improved method to ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Auteur(s): Ziegler, P.E., D.C. Welsford and A.J. Constable
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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
to be monitored as including all areas south of 60°S and so includes the entire Ross Sea region ... : (L = <10 years; M = 10–30 years; H = >30 years) Growth rate: (L = mature <10 years; M = mature 10–20 ... , depth and diversity of those taxa within the Ross Sea region (60–80°S 150°E–150°W). The resulting ... (>60 mm year–1) (Grigg, 1976) and live about 40 years. A black coral speci- men off the California ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Auteur(s): Parker, S.J. and D.A. Bowden
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Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3
to the nearest minute. 20 25 30 35 40 45 50 Station Figure 11: Trawl start times per station ... , biomass, finfish, CCAMLR INTRODUCTION Surveys using bottom trawls have been used for over 20 years to ... (17, 20 and 21) were logged every 30 seconds and the fourth (22) every 20 seconds. The hydrophone ... seabed at 19:58:40 and left at 20:24:50, survey, except when severe problems with the trawl were ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Auteur(s): Pilling, G. and G. Parkes
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Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds
top down to the middle of its height with a cover having relatively small meshes (mesh bar 20 mm ... [7.JO. ~'Slll IN CODEND 100 1 I \ I 80 J I 60 40 ~ ! 20 -l I '15 50 25 ... in the case of 80 mm codend. Selection effectiveness increased from 20% for 80 mm codend to almost ... (35-64%). This meant that between 35 and 65% of fish in the codend with a length smaller than L100 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Auteur(s): Zaucha, J.