Search results
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A post-processing method to remove interference noise from acoustic data collected from Antarctic krill fishing vessels
surveys, the FIBEX (Trathan et al., 1995) and the CCAMLR-2000 krill synoptic sur- vey of Area 48 (Watkins ... standing stock of krill (B0) derived from the CCAMLR-2000 Survey is still used by the Commission ... ; Korneliussen, 2000; De Robertis and Higginbottom, 2007). The effect of an attenuated signal may ... -frequency (24, 75, 200 kHz) KAIJO MEMO-2000 sonar and a 28 kHz JRC JFS-3380 sonar. All these devices were ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 17–30 : Author(s): Wang, X., J. Zhang and X. Zhao
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Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
/98, 2000 and 2004. The regression lines for estimating TS from nine experiments were: TS 38 ... and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997/98, 2000 ... to 120 m, during the Italian expeditions of 1997/98, 2000 and 2004. The regression lines for estimating ... à des profondeurs de 30 à 120 m, au cours des campagnes d'évaluation italiennes de 1997/98, 2000 et ... (N = 19); TS200 = 26.71Log TL(см) –73.74; (N = 16). В ходе итальянских экспедиций 1997/98, 2000 и 2004 гг ... , 2000 y 2004 se efectuaron nueve experimentos acústicos in situ con redes de arrastre dirigidos ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Author(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
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Assessments of by-catch in trawl fisheries at Heard and McDonald Islands
catches of target species were taken, indicating that CCAMLR039;s 1996 by-catch rules need revising ... 0 1050 mm 0.215 1.468E-9 3.214 8 years 1 March 1 0.4-0.5 0.0 1 May 1 March 1 November ... 5.0 1E-05 All year 0 583 mm 0.163 5.142E-10 3.398 350 mm 280 mm 1 March 1 0.3-1.0 ... 0.0 1 May 1 March 1 November 0.256 0.308 0.248 1 l 001 1 001 1 0 20 0.2 ... -0.5 0.0 1 May 1 March 1 November 0.418 0.870 0.392 1 l 001 l 001 1 0 20 0.2 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Author(s): Constable, A.J., R. Williams and W.K. de la Mare
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A hybrid approach to acoustic classification and length estimation of krill
backscatter data, using net samples largely to validate the acoustic data (Azzali et al., 2000a). This paper ... /98 and 2000). Methods Deterministic methods Theoretical and empirical studies (Johnson, 1977 ... of the acoustic processes that generate these differences (Stanton and Chu, 2000), it would be extremely ... data used in this paper were collected in three surveys to the Ross Sea (1989/90; 1997/98 and 2000 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Author(s): Azzali, M., I. Leonori and G. Lanciani
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Using ecosystem monitoring data to detect impacts
., 2000; Miller, 2002). One of the ongoing chal- lenges faced by CCAMLR is to develop a manage- ment ... of anomalies [in mon- itoring data]’ (de la Mare and Constable, 2000). It is necessary to distinguish between ... (e.g. de la Mare and Constable, 2000). Although an impact might be characterised by a change ... la Mare and Constable (2000) tested an anomaly detection method analogous to Method 1 above ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Author(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda
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Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
fishing operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3 ... fishing operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3 ... operations were recorded by CCAMLR observers between 2000 and 2002 at South Georgia (Subarea 48.3). Demersal ... à la palangre ont été enregistrées par les observateurs de la CCAMLR entre 2000 et 2002 en Géorgie du ... ) в период 2000–2002 гг. Демерсальные ярусы для лова патагонского клыкача (Dissostichus eleginoides ... macrocephalus) con las operaciones de pesca de palangre en Georgia del Sur (Subárea 48.3) durante los años 2000 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Author(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins
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Assessment of krill flux factors in waters of South Orkney Islands during summer 1996
February to 7 March 1996 to assess krill flux factors in Subarea 48.2. The study area (80 x 240 n miles ... This paper describes the results of an experiment conducted from 19 February to 7 March 1996 ... the results of an experiment conducted from 19 February to 7 March 1996 to assess krill flux factors ... AND METHODS The experiment was carried out by RV Atlantida from 19 February to 7 March 1996 in a study ... to 7 March), a hydroacoustic survey and oceanographic stations were carried out (with meridional transects ... 48.2 during the survey (17 February to 7 March 1996). Table 1: Mean water mass transport across ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 195–204 : Author(s): Kasatkina, S.M., V.N. Shnar, M.I. Polischuk, A.M. Abramov and V.A. Sushin
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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
, multi-ship survey across the Scotia Sea in January–February 2000, the biomass of Antarctic krill ... million tonnes was adopted by CCAMLR for FAO Statistical Area 48 (CCAMLR, 2000) (for a description ... of the CCAMLR-2000 Survey see SC-CAMLR, 2000 and Hewitt et al., 2002). The Commission further subdivided ... the results of the CCAMLR-2000 Survey as described in the text. Catch data are aggregated from submissions ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins
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Factors affecting the incidental mortality of seabirds in the Dissostichus eleginoides fishery in the southwest Atlantic (Subarea 48.3, 1995 season)
of streamer lines and hook size were important sources of variation, both in vessels039; analyses of catch ... the fishing season for D. eleginoides (in this case, from 1 March to 16 May 1995) has been summarised ... species during fishery operations for D. eleginoides in Subarea 48.3, between March and May 1995 ... and Chilean vessels in Subarea 48.3 between March and May 1995. (r - coefficient of correlation ... the vessel than other species of albatross, obtaining their food by attacking other birds which dive ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 79–91 : Author(s): Moreno, C.A., P.S. Rubilar, E. Marschoff and L. Benzaquen
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Response to Everson (2008)
, UK Using multifrequency acoustic data from the CCAMLR-2000 Survey (Hewitt et al., 2004; Watkins et ... ., 2001 for the CCAMLR- 2000 strata). Stratum biomass is determined from the mean transect density raised ... . The CCAMLR-2000 Survey comprised a total of 48 transects in 7 strata, with a maximum of 10 transects per ... × 1 094 n mile oblong within which the CCAMLR-2000 Survey fell. The biomass estimate of 207.98 million ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 195–198 : Author(s): Brierley, A.S., B.G. Heywood and S.F. Gull