Resultados de la búsqueda
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Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish
Paper Title: Revised estimates of seabed areas within the 500 m isobath of the South Orkney ... Abstract / Description: A revised bathymetric map of the South Orkney Islands (Subarea 48.2) was generated ... using several integrated bathymetric databases and newly available acoustic seafloor data. The region ... extends between 60.2 o-62.2 o S latitude and 42.5 o-47.5 o W longitude. From the integrated datasets ... continuously collected acoustic measurements from the 1999 US AMLR bottom trawl survey (Table 1). Because no ... REVISED ESTIMATES OF SEABED AREAS WITHIN THE 500 M ISOBATH OF THE SOUTH ORKNEY ISLANDS (SUBAREA 48.2) AND ... Resources Program PO Box 271, La Jolla, Ca. 92038, USA Abstract A revised bathymetric map of the South ... available acoustic seafloor data. The region extends between 60.2"-62.2"s latitude and 42.5O47.5"W ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 197–204 : Autor(es): C.D. Jones
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Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
Paper Title: Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the ... paper, I show how data that are routinely collected by survey vessels can be used to estimate the number ... of concentrations of krill (Butterworth, 1988; Mangel, 1988) in a given region of the Southern Ocean ... . Sample computations are performed, using data collected by Soviet research/survey vessels in the early ... concentrations, there is no indication in the data of the type of movement, as described above, or whether the ... time, but there is no way to tell if this is true (or what the operations were) from the logbooks ... of the region being searched. Using the methods described in this paper, no inferences can be made ... WS-KCPUE-89/6 ANALYSIS AND MODELLING OF THE SOVIET ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Autor(es): Mangel, M.
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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
Paper Title: Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by ... acoustic surveys Abstract / Description: Acoustic surveys carried out in the summer and autumn of 1987 ... -1989 estimated the biomass of myctophids in the Atlantic sector of the Southern Ocean between 48° and ... 56° and from 8° to 48°W to be approximately 1.7x10 6 tonnes. Over the greater part of the surveyed ... were found spread more to westward than in 1988. In 1989 no concentrations were found in the Frontal ... WG-FSA-90/19 BIOMASS OF MYCTOPHIDS IN THE ATLANTIC ... SECTOR OF THE SOUTHERN OCEAN AS ESTIMATED BY ACOUSTIC SURVEYS A.A. Filin, K.V. Gorchinsky and V.M ... . Kiseleva* Abstract Acoustic surveys carried out in the summer and autumn of 19g7 -19g9 estimated the ...
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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Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area
Paper Title: Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari ... in the South Georgia area Abstract / Description: The stocks of Notothenia rossii marmorata and ... Champsocephalus gunnari in the South Georgia area are assessed using USSR age sample data and recent biomass ... estimates from surveys by the FRG. These data indicate that the stock of N. rossii in 1985 was about 2.5% of ... , while the stock of Champsocephalus gunnari has fluctuated greatly with no obvious trend ... important to recognise that the age data themselves provide little or no information on the status of a ... the initial reduction of the stock in the period 1970-71 was rather abrupt, these data provide no ... exceeding them. Even if there were no dependence of recruitment on stock size in the range encountered ...
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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A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey
the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey Abstract / Description ... : A probabilistic Bayesian Maximum Entropy (MaxEnt) technique was used to estimate the abundance of ... Antarctic krill (Euphausia superba) across the Scotia Sea using data from the CCAMLR 2000 Krill Synoptic ... Survey of Area 48 (CCAMLR-2000 Survey) and to map the density distribution of krill across the survey ... - 2000 Survey. There is in principle no mathematical transform that can be applied to the data that will ... fishery acous- tic surveys, there is no need for such complication, since both the data and the image ... . The estimates generated by the two methods dif- fered by no more than 1%. In addition, since the ... scaling factor (the rate of change of the blurring width) was found to have almost no effect on the ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Autor(es): Heywood, B.G., A.S. Brierley and S.F. Gull
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Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90
Paper Title: Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea ... 48.2) during 1989/90 Abstract / Description: The results of an analysis of haul-by-haul catch ... statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... period from 1 November 1989 to 12 June 1990) are presented. During the season, fishing vessels worked one ... operation. In particular, until now no publications have been available that document the distribution of ... required. Short-term target tows were rare since there were no reliable sonars on the Soviet vessels ... THE SOVIET KRILL FISHING FLEET IN THE SOUTH ORKNEYS AREA (SUBAREA 48.2) DURING 198911990 V.A ... St. Kaliningrad 236000, Russia Abstract The results of an analysis of haul-by-haul catch ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Autor(es): Sushin, V.A
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Status of the FIBEX acoustic data from the West Atlantic
are consistent with the other surveys. The authors can find no explanation for this difference. File ... Paper Title: Status of the FIBEX acoustic data from the West Atlantic Abstract / Description ... : Data from the FIBEX acoustic survey in the West Atlantic sector have been re-examined to check the ... consistency between the results from four of the vessels, Itzumi, Dr Eduardo L. Holmberg, Odissey and Walther ... the other surveys. The authors can find no explanation for this difference. Resume Les auteurs ont ... (Anon., 1986), it is no longer possible to clarify a number of these uncertainties, hence the ... within the I t z u m i cruise and not used for comparison with other cruises. No problems have been ... within one of the Scotia Sea survey areas. Following conversion to MVBS, no further problems have ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Autor(es): Trathan, P.N. and I. Everson
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On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish survey Antártida 8611
Paper Title: On the presence of Paralomis spinosissima and Paralomis formosa in catches taken ... during the Spanish survey Antártida 8611 Abstract / Description: This paper provides information on ... Antarctic crabs obtained during the 1986 Spanish survey ANTARTIDA 8611, which covered the shelf around all ... the archipelagos in the Scotia Sea. A total of 345 hauls was conducted, of which 29 took place around ... CCAMLR Science, Vol. 1: 165-173 ON THE PRESENCE OF ... PARALOMIS SPINOSISSIMA AND PARALOMIS FORMOSA IN CATCHES TAKEN DURING THE SPANISH SURVEY A N T A R T ' A ... information on Antarctic crabs obtained during the 1986 Spanish survey ANTARTIDA 861 1, which covered the ... shelf around all the archipelagos in the Scotia Sea. A total of 345 hauls was conducted, of which 29 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 165–173 : Autor(es): López Abellán, L.J. and E. Balguerías
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Experimental evaluation of the effectiveness of weighting regimes in reducing seabird by-catch in the longline toothfish fishery around South Georgia
Paper Title: Experimental evaluation of the effectiveness of weighting regimes in reducing ... seabird by-catch in the longline toothfish fishery around South Georgia Abstract / Description: A series ... of experiments was carried out in February 1999 at South Georgia (Subarea 48.3) to examine the ... effects of different weighting regimes on the incidental mortality of birds caught on longlines fishing ... or the number of black- browed albatrosses killed. RESULTS Experimental Results No practical ... results is presented later in the paper (Table 4). No empirical measurements of line sink rates were ... influencing the number of birds caught. As before, environmental variables had no influence either. The only ... albatrosses alone was considered, the weighting regime in the second experiment was shown to have had no ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 119–131 : Autor(es): Agnew, D.J., A.D. Black, J.P. Croxall and G.B. Parkes
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Population genetic structure of Patagonian toothfish in the West Indian Ocean sector of the Southern Ocean
Paper Title: Population genetic structure of Patagonian toothfish in the West Indian Ocean sector ... of the Southern Ocean Abstract / Description: Molecular markers were used to investigate the stock ... structure of Patagonian toothfish (Dissostichus eleginoides) in the West Indian Ocean sector of the Southern ... per collection ranged from 0.000 to 0.900 and allele counts from 1 to 21. There was no evidence of ... within). In a recent genetic study by the authors, no signifi cant differentiation between Macquarie ... are contigu- ous with water no deeper than 600 m separating the two areas (Williams et al., 2002). In ... - tion (considering microsatellite loci jointly) among the four collections showed no signifi cant ... the West Indian Ocean sector col- lections was accounted for within samples. Thus, no signifi cant ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 21–32 : Autor(es): Appleyard, S.A., R. Williams and R.D. Ward