Résultats de la recherche

1. Target strengths of krill at 136 and 20 kHz

   Paper Title:  Target strengths of krill at 136 and 20 kHz Abstract / Description:  Estimation of ... the mean single-krill target strengths range from-71 to-77 dB at 20 kHz. Trawl hydroacoustic method ... -75 -77 -'1'9 _--'-_~~_~_-'---~_~~_ 20 25 30 :35 40 45 50 55 60 ~ MM Figure 6. Krill target ... ) equation coefficient Encaged krill 136 TS = 0.39L - 86.50 (4) 0.87 Encaged krill 20 TS = 1.27L - 131.30 ... WG-KRILL-91/29 TARGET STRENGTHS OF KRILL AT 136 AND 20 ... strengths range from -71 to -77 dB at 20 kRz. Trawl hydroacoustic method. For aggregations with mean ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 141–157 : Auteur(s): Kasatkina, S.M.

2. Preliminary report on biological observations and exploratory fishing data collected in the South Georgia area during the 1985/86 cruise of MT Carina

   mesh sizes (47 and 60 mm) were used with a bottom trawl of 32 m head rope. Catch data were collected in ... 249 hauls using 60 mm mesh size outside the 12 nautical mile protected zone around South Georgia ... determinations. The total catch with 60 mm mesh size codends was 1305.4 tons with a mean CPUE of 1822 kg/hour. C ... of C. gunnari were found with modes of 18 and 28 cm. The length range of C. aceratus was 25–72 cm. P ... . aceratus was 25-72 cm. P. georgianus was represented by three length groups : 20-24, 32-41 and 42-56 cm ... de C. aceratus fue de 25-72 cm. P. qeorqianus estuvo representado por tres grupos detamafio: 20-24 ... \ ,,'- " \/ '-t \ I " I \ I \ " \.. .... ../ \ ,-- \ " V , n-401 (2) n- 911{4) 20 ® Figure 6 Length ... monitoring program conducted by the Sea Fisheries Institute, Gdynia. Codends of two mesh sizes (47 and 60 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Auteur(s): Kreft, K. and J. Szynaka

3. Investigations of required sampling regimes for environmental parameters

   speed continuously or as daily maxima and minima would be sufficient to detect a 10 to 20% change in ... monthly mean log-transformed wind speed α of 0.05 and P of 0.9. File:  35-Agnew.pdf ... 1987. Strong daily, depressional (4 to 5 days) and yearly cycles were seen in temperature, wind speed ... ~--~.-------.---~-'--------~ 5 10 15 20 25 30 35 days Figure 4: Daily wind speed by three hour sampling period for January 1985 ... =0.6 P=0.8 P=0.9 1°C 27 47 65 37 60 80 2"C 7 12 16 10 15 20 3°C 5 5 7 6 8 10 Table 3: Sample size ... 60 15 8 January min -0.482 1.488 35 10 6 February max -0.848 2.890 132 33 15 February min ... 10-20% High recording ormax/min information 568 4 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Auteur(s): Agnew, D.J.

4. Areas of seabed within selected depth ranges in the South-West Atlantic and Antarctic Peninsula regions of the Southern Ocean

   267758 72 56°00' 60°00 ' 20°00' 24°00' 0 100 104782 104782 Total for sub-area 0.1 99.9 847097 847388 ... ' 60°00' 29°30' 30°00' 0 100 13097 71 50°00' 56°00' 20°00' 26°00' 0 lOO 267758 72 56°00' 60°00' 20 ... (km2 ) Subdivision N S E W 0-50 50-150 150-250 250-500 )500 Sea Total 62°00' 62°20' 59°30' 60°00 ... ' 62°40' 58°30' 59°30' 9.5 2.7 3.2 84.5 1809 1898 6 62°20' 62°40' 59°30' 60°00' 63.3 8.7 9.7 18.4 772 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 49-73 : Auteur(s): Everson, I.

5. Selectivity of commercial and research trawls in relation to krill

   RT 72/308 and an Isaacs-Kidd midwater research trawl (IKMT). The commercial trawl catches contained ... more large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in ... catches made using the commercial RT 72/308 trawl are more accurate than those obtained using the IKMT ... This paper describes the results of fishing a single krill aggregation with a commercial trawl RT 72 ... large krill (35-58 mm) than catches of the research trawl (30-54 mm). The maximum difference in mean ... made using the commercial RT 72/308 trawl are more accurate than those obtained using the IKMT ... concentration de krill par un chalut commercial de type RT 72/308 et un chalut pelagique de recherche Isaacs ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 161–169 : Auteur(s): Kasatkina, S.M

6. Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000

   /m 0.2 g/m 0.02 g/m 240 220 200 180 160 140 120 100 80 60 40 20 0 60°38' S 59°35 ... . Pa ra m et er T ra w l 72 / 30 8 V er ti ca l o pe ni ng (m ) 35 H or iz on ta l o ... 59°S 60°S 61°S 200 g m-2 20 g m-2 2 g m-2 0.2 g m-2 31°W 30°W 29°W ... of water density, sigma-t (kg m-3). 240 220 200 180 160 140 120 100 80 60 40 20 0 59°32 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Auteur(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky

7. Biomass, abundance and distribution of fish in the Kerguelen Islands EEZ (CCAMLR Statistical Division 58.5.1)

   10.21 0 10 000 20 000 30 000 40 000 50 000 To nn es TOP ANI NOS NOR BEA BYR MCC LIC Species ... on Everson’s scale with modes at 35 and 38 cm, ages 4 and 5, 4.78 million specimens, 22.5% of fish ... 1987 and 1988 (SKALP surveys; see Duhamel, 1993a), nearly 20 years after the beginning of fish- ery ... 69 70 71 72 73 °E South deep sea South ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 1–32 : Auteur(s): Duhamel, G. and M. Hautecoeur

8. By-catch of fish in the krill fishery

   180 35 60 30 940 0.50 113 20 5 53 41 37 31 320 315 65 150 1535 0.50 114 23 5 53 35 38 20 2550 2550 ... 31 1 60 30 44 51 650 400 0 35 2030 2.00 57 1 2 60 25 46 20 125 130 20 50 230 0.75 58 1 2 60 23 45 ... 70 7 2 60 26 46 25 250 300 20 800 2050 1.67 71 8 2 60 23 46 16 1500 1500 1125 0.33 72 8 2 60 26 46 ... 65 15 1 15 3000 3000 37 60 24 810 0.58 34 26 3 65 20 6 60 4600 4600 40 40 30 1110 0.50 35 27 3 65 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 381–401 : Auteur(s): Everson, I., A. Neyelov and Y.B. Permitin

9. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   as it passes through the trawl sides. Studies were based on the results of 250 hauls made with a 72 ... concentration d.ensity in the zone of action of the trawl,g/m 70 60 50 20 10 o 0,6 9,4 18,1 26,8 35,S ... Rhomboid a=lOO (30) mm a=80(20)mm a=60 (18) mm 0.2 0.2 0.2 Hexagonal a=lOO (20) mm a=80 (14) mm a=60 ... 70 60 50 40 ~ 30 I» o ~ 20 g. f 10 \-l o 0,9 10,7 20,5 30,3 40,1 ~9.9 59,7 3 ... diameter is 4 to 5 m and the mesh bar is 20 mm. Finally, when the cross-section diameter decreases to 3 to ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Auteur(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

10. Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

    er ti ca l e xt en t ( m ) 58 –7 4 10 –5 8 35 –6 0 26 –5 8 60 –6 5 26 –5 8 95 ... ° 73 .5 92 ° 74 .8 90 ° 75 .9 00 ° 73 .2 10 ° 74 .5 60 ° 72 .8 39 ° 72 .6 22 ° 75 ... ) 59 26 46 46 55 56 46 34 56 72 40 28 60 09 45 46 49 99 M ea n sp ee ... .2 20 ° L on g. (E ) 17 5. 22 9° 17 5. 69 1° 16 4. 64 0° 17 6. 12 0° 17 1 ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Auteur(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi

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