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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
/ 10 5. 8 16 4/ 21 7/ 25 3 2. 22 /2 .6 7/ 3. 23 3. 03 /3 .5 3/ 4. 15 3. 30 /3 .8 8 ... Science, Vol. 23 (2016): 17–30 17 A post-processing method to remove interference noise from acoustic ... indicated in Figure 2. (i) Weak and strong interference thresholding In order to remove the background ... the swarm, a ‘dila- tion’ filter was successively applied to the ero- sion-filtered data (Figure 2 ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Autor(es): Wang, X., J. Zhang and X. Zhao
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Analysis of results from demersal fish surveys at South Georgia, undertaken by the United Kingdom and the USSR, January and February 1990
ci z 70 60 50 40 30 20 10 0 f 0 1 2 3 4 5 6 7 Catch (tonnes) of C. gunnarl One ... modifications. The agenda as adopted is given in Annex 1. 2. DATA Data from both surveys were available for ... stations is given in Paper 2 and the planned survey design in Annex 2. Even though nearly all the haul ... surveys were discussed separately. 3.1 Akademik Knipovich GRT Power LOA 3000 tonnes 2 000 hp 89m ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 223–254 : Autor(es): (Report of a Joint UK/USSR Workshop, 23 to 27 July 1990)
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Is the attempt to estimate the biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited
° – 30 ° –5 2° –5 4° –5 6° –5 8° –6 0° –6 2° –6 4° – 60 ... ° –5 8° –6 0° –6 2° –6 4° Kock et al. 150 Figure 2: Catches (kg/30 min) of Notothenia rossii at ... рисунков Рис. 1: Западная часть атлантического сектора. Рис. 2: Уловы (кг/30 мин.) Notothenia rossii у ... las fi guras Figura 1: Parte occidental del sector del Océano Atlántico. Figura 2: Capturas (kg/30 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 141–153 : Autor(es): Kock, K.-H., M. Belchier and C.D. Jones
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On the power to detect changes using the standard methods for monitoring parameters of predatory species
sample sizes for detecting changes of 10%, 20% and 30% of the mean values are shown in Table 2. No ... %) 119 96 72 46 2.48 (20%) 31 25 1 9 1 3 3.72 (30%) 1 5 1 2 9 7 For Cl = 0.10: 1.24 (10%) 99 79 57 ... 34 2.48 (20%) 26 21 1 5 1 0 3.72 (30%) 1 2 1 0 8 5 Incubation shifts by females: Statistical ... : 2.43 (10%) 92 74 56 36 4.86 (20%) 24 20 1 5 1 0 7.29 (30%) 1 2 1 0 8 6 For Cl = 0.10: 2.43 (10 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Autor(es): Boveng, P. and J.L. Bengtson
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The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)
. Belchier et al. 2 (above 0.5°C) where they occur at low densities (Hall and Thatje, 2011). They are ... . Neolithodes diomedeae is one of the deepest occurring lithodids and has been caught at depths exceeding 2 ... weights of 1 180 g have been recorded for P. spinosissima (Table 2), whilst the smaller P. formosa ... 10.10–20.00 44°15'W 43°30'W 42°45'W 42°0'W 41°15'W 40°30'W 39°45 ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Autor(es): Belchier, M., T. Peatman and J. Brown
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Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996
Mean C1 1986 Mean C1 1987 Mean C1 1996 Mean C1 51-200 m 24 11-106 11 2-25 84 30 ... 2 879 1 181-15 122 6 499 2 952-30 939 754 518-1 261 6 956 3 766-17 405 5 369 3 074-12 ... 879 1 181-15 122 6 499 2 952-30 939 768 532-1 184 7 619 4 262-672 201 5 530 3 234-12 251 ... , 1986, 1989a; Nast et al., 1988; Tiedtke and Kock, 1989; Grohsler, 1992) (Table 2). The first survey ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Autor(es): Kock, K.-H
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
surveyed from 20 February to 2 March. Secondly, the area with coordinates 51°30' to 55°00'S and 8°00' to ... 18°30' (Figure 7) was surveyed from 20 March to 2 April. These sectors had areas of 52 600 square ... of the Southern Ocean. 2. MA1ERIALS AND METHODS Acoustic surveys for myctophids in the Atlantic ... fish along a cruise track was estimated by means of the formulae: p- Mo N- cr(L) (1) or P- Mo (2 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Autor(es): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva
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Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program
(% Current Value) (20 %) 5 5 (30%) 2 3 Sample sizes required for five years of monitoring and a = 0.10 ... Figure 2 (continued) 424 40 n=89 x= 36.9 sd = 15.1 30 ""'" ...... C ::l 0 U '-" ;>, 20 ... 3.75 4.00 4.25 4.50 2 - 6 Feb 30 b n =87 x=2.9 sd = 0.4 -.. .... C 20 ::: 0 u ... are described in the following section. 2. DATA ACQUISITION AND CHARACTERISTICS 2.1 Parameter A 1 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Autor(es): Whitehead, M.D.
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Age, growth and mortality of Patagonian toothfish (Dissostichus eleginoides) caught off Kerguelen
1 5 6 1 3 2 1 120 1 1 1 1 130 1 Total 1 10 20 39 39 21 30 ... ge ( ye ar s) 0 10 20 30 40 50 (a) (b) Ashford et al. 38 Figure 2: Age structure of ... смертности Z по оценке лежит в диапазоне Ashford et al. 30 Introduction In contrast to early sealing ... ): 1 ˆˆ ˆi j ijjp l q (2) where pi is the proportion of a population of age i = 1,2,3,...,n; lj is ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 29–41 : Autor(es): Ashford, J., G. Duhamel, C. Jones and S. Bobko
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Estimates of fish stock biomass around South Georgia in January/February 1985
et C. gunnari. Les estimations de biomasse indiquent une reduction de 10-20% du stock - 2 ... sizes of commercially exploited species around South Georgia. 2 Material and methods Before the ... . Evalutions are thus confined to division 89. Length frequency composition (fig. 2) shows that our catches ... & BUREAU, 1984, table 50). 3.4 Champsocephalus gunnari Except for one haul yield i ng 1. 4 t/30 min ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Autor(es): Kock, K.-H.