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Status of the FIBEX acoustic data from the West Atlantic
Herwig. While there is an error factor due to the combination of data collected at 50 kHz (Walther Herwig ... are consistent with the other surveys. The authors can find no explanation for this difference. File ... as tonnes n mile-' with an integration interval of 9 760 m; however, for the re-analysis carried ... apply an empirical correction based on the differences found in the field for the MVBS value found at ... of the vessels, Itzurni, Dr Eduardo L. Holmberg, Odissey and Walther Herwig. While there is an error ... the other surveys. The authors can find no explanation for this difference. Resume Les auteurs ont ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Автор(ы): Trathan, P.N. and I. Everson
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
krill biomass for the area. It was therefore only possible to begin to explain the reasons for the ... favourable for krill aggregations its biomass around South Georgia is approximately 400-800 thousand tonnes ... . Unfavourable conditions correspond to a biomass of an order of magnitude less. Short-term fluctuations of krill ... create a foundation for identifying the type of change taking place. During the above years the low ... seasons unfavourable conditions predominated for an extended period (Survey 5) and due to low biomass and ... WG-KRILL-90/19 DISTRIBUTION, BIOMASS AND ... biomass for the area. It was therefore only possible to begin to explain the reasons for the variability ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Автор(ы): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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Statistical problems in krill stock hydroacoustic assessments
: Two primary issues are at question for hydroacoustic assessments of krill. The first is the methods ... -strength measurements. In the case of statistical methods, there are no clear guidelines for deciding what ... needs for improvements in sampling design and tests for systematic trends in survey data collected from ... to be not the absolute amount of biomass present in an area, but rather how it is distributed. The ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... its own requirements to have sufficient for its offspring too. Figure 1 shows an example of this with ... patch dominated year) it can quickly obtain sufficient food for its needs. If, however, it must spend a ... HYDROACOUSTIC ASSESSMENTS M.C. Macaulay Abstract Two primary issues are at question for hydroacoustic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Автор(ы): Macaulay, M.C.
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... , Australia. BEVERTON, R.J.H. and S.J. HOLT, 1956. A review of methods for estimating mortality rates in ... sites. On the other hand, when comparing various mean values of M for the different cases, it was ... straight hooks No. 22. The general mean value of M calculated for the 44 analysed situations was 0.14 ... , captura total y una submuestra de 30 ejemplares por lance, de los cuales se obtuvo la composicion por ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Автор(ы): Moreno, C.A. and P.S. Rubilar
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By-catch of fish in longline catches off the Kerguelen Islands (Division 58.5.1) during the 1995/96 season
cruise and an experimental deep-sea longline fishing cruise targeting Patagonian toothfish (Dissostichus ... at the limit of their bathymetric range. An abundance index was used to show bathymetric and ... 80 85 90 Total length (cm) Figure 7: Size distribution of Macrourus carinatus caught during ... taken during a commercial fishing cruise and an experimental deep-sea longline fishing cruise targeting ... others were mainly shelf-dwelling species found at the limit of their bathymetric range. An abundance ... fishing for D. eleginoides has expanded to other parts of the Southern Ocean (South Georgia and recently ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 175–193 : Автор(ы): Duhamel, G., P. Pruvost and D. Capdeville
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International CCAMLR applied research and monitoring program, Prydz Bay priority area
Australia towards the first five years of an International CCAMLR Applied Research and Monitoring Program in ... area Abstract / Description: An outline is given of a proposed scientific research contribution by ... a proposed scientific research contribution by Australia towards the first five years of an ... for information on feeding throughout the year, the Australian contribution is centred upon shore ... review. - 293 - 7. SHIP .TIME Australia allocates in the order of 40 days per year of ship time ... RESEARCH AND MONITORING PROGRAM, PRYDZ BAY PRIORITY AREA Australia Abst ract An outline is given of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 283-295 : Автор(ы): Australia
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Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... / Description: Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the ... previous reports adjusted for the recently proposed definition of krill target strength (Greene et al ... density over the 13-year period were 1 703 x 103 tonnes and 53.2 g/ 2. File: 01hewitt-demer.pdf ... vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ... surveys (30 mm and 41 mm). Klindt's biomass estimate for the 1985 survey may be adjusted by a factor ... ). Estimates for 1981 to 1991 are based on previous reports adjusted for the recently proposed definition of ... , for consideration by the Working Group at its 1993 meeting. DATA SOURCES Macaulay et al. (1984 ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Автор(ы): Hewitt, R.P. and D.A. Demer
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
mainly target species from two families, Loliginidae and Ommastrephidae. Fisheries for the latter have ... Martialia hyadesi; will be attempted in the future. This squid is an important component of the diet of ... of two years and a circumpolar distribution, but its biology and ecology are still virtually unknown ... , Loliginidae and Ommastrephidae. Fisheries for the latter have been characterized by dramatically fluctuating ... squid is an important component of the diet of several species of albatross and the southern elephant ... 51 400 tonnes. M. hyadesi probably has a life span of two years and a circumpolar distribution, but ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Автор(ы): Rodhouse, P.G.
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Sexing of adult Adélie penguins by discriminant analysis of morphometric measurements
determine the sex of Adélie penguins. A sample of 46 adult birds was taken for measurement from the breeding ... depth only also gave good results (80% correct). File: 33-Scolaro-et-al.pdf ... for discriminating between sexes. In practice, this means that the sex of an individual Adelie ... determine the sex of Adelie penguins. A sample of 46 adult birds was taken for measurement from the ... and bill depth only also gave good results (80% correct). Resume U ne analyse discriminante de ... hauteur du culmen, la discrimination s'est egalement montree satisfaisante (correcte it 80%). Pe3IOMe ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 543–549 : Автор(ы): Scolaro, J.A., Z.B. Stanganelli, H. Gallelli and D.F. Vergani
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Validation of sink rates of longlines measured using two different methods
, for measuring sink rates to shallow depths when instant readings were required. TDRs can be used to ... temperature where they soaked for at least 30 minutes before being deployed. Since the TDRs may hang on the ... deployment of an instrument about 30 s before it passed through the setting chute. The observer positioned ... depths, average sink rates of the TDRs were obtained for four target depths: 2, 5, 10 and 20 m. It was ... 0.239 ± 0.016 m.s–1 to 20 m and were thus 30% slower than those measured to 20 m (Table 1). This ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Автор(ы): Wienecke, B. and G. Robertson
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