Résultats de la recherche
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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 ... Paper Title: Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... curve hooks No. 14 and straight hooks No. 22. The general mean value of M calculated for the 44 analysed ... (1989) from the data obtained during the Chilean longline fishery in Subarea 48.3 (N = 7 848. The von ... . DOROVSKIKH and K.V. SHUST, 1991. Assesment of the Dissostichus eleginoides stock in subarea 48.3 for the ... longline fishery of Dissostichus eleginoides (Nototheniidae) off the chilean coast. In: Selected ... . Report of the Working Group on Fish Stock Assessment. In: Report of the Ninth Meeting of the Scientific ... . DOROVSKIKH and B.A. KENZHIN. 1990. The state of Dissostichus eleginoides stock and TAC for 1990/91 in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Auteur(s): Moreno, C.A. and P.S. Rubilar
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
Paper Title: Long-term monitoring of krill recruitment and abundance indices in the Elephant ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ... (marked with A in Tables 1 and 2 are not included in the calculation of the mean, because the small ... MONITORING OF KRILL RECRUITMENT AND ABUNDANCE INDICES IN THE ELEPHANT ISLAND AREA (ANTARCTIC PENINSULA) V ... bootstrap replication (Efron and Gong, 1983). The statistical significance of observed variation in krill ... . Figure 1 gives a conceptual view of the seasonal variation. Krill abundance/density is low in the ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Auteur(s): Siegel, V., W. de la Mare and V. Loeb
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Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993
Paper Title: Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993 Abstract ... / Description: Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the ... years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... previous reports adjusted for the recently proposed definition of krill target strength (Greene et al ... 92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... estimates of krill biomass in the vicinity of Elephant Island was presented as part of a working paper ... describing acoustic surveys conducted in the area during the austral summer of 1992 (Hewitt and Demer, 1993 ... ) estimated that 2.1 million tonnes of krill were aggregated in a large swarm located over the shelf break ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Auteur(s): Hewitt, R.P. and D.A. Demer
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
Paper Title: Estimation of krill (Euphausia superba) mortality and production rate in the ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... ratio of 0.88 to 0.94 for different years. The exchange rate of water masses and krill biomass within ... biomass (including production) of 4.3 and 5.0 x 10 6 tonnes passing through the survey area during the ... number of stations and the abundance of krill were different in these clusters, a simple unweighted mean ... Table 3, however, it is obvious that in 1987/88 the age group 3+ with a mean length of 44.7 mm ... parameters in the krill production estimation. Mean size of age classes and their proportion of total ... were carried out in a standardized way, which allows a direct comparison of the results. Overall mean ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Auteur(s): Siegel, V.
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Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and Prydz Bay
Paper Title: Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and ... Monitoring Program in the Prydz Bay area is proposed. Major components of the program are observations of ... research activities be co-ordinated by participating CCAMLR Members. The overall program should be co ... -ordinated and supervised by the CCAMLR Scientific Committee. File: 19-USSR.pdf ... - SOVIET PROPOSALS FOR A PROGRAM OF ECOSYSTEM MONITORING IN THE COMMONWEALTH SEA AND PRYDZ BAY One of ... three major research directions, the findings of which might then be seen in inter-relation with the ... in the species composition and phenological structure of the community which relate to the ... distribution and abundance of animals in the open sea and on ice should be conducted, and data on age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 355-362 : Auteur(s): USSR
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Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys
Paper Title: Prey monitoring surveys: a discussion of the characteristics necessary in prey ... distribution to relate to changes in predator demography. The paper discusses the constraints imposed on such ... surveys Abstract / Description: The CCAMLR Ecosystem Monitoring Programme requires information on prey ... DISCUSSION OF THE CHARACTERISTICS NECESSARY IN PREY SURVEYS I. Everson (United Kingdom) Abstract The ... parameters is believed to be praticable. Evaluation of the cause of changes in the values of these ... . The remaining parameters require information on the availability of krill in an undefined region ... . Antarctic Peninsula Region The area is indicated in Figure 1. The arcs of circles are of radius ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Auteur(s): Everson, I.
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An iterative model to construct an age/length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
Paper Title: An iterative model to construct an age/length key to assess the age composition of a ... sampled from the same population. If such sampling is not possible the estimates of the age distribution ... composition of catch for Dissostichus eleginoides was obtained with the application of a single age/length key ... new fishery for Dissostichus eleginoides in Chilean waters Abstract / Description: Traditional ... sampled from the same population. If such sampling is not possible the estimates of the age distribution ... composition of catch for Dissostichus eZeginoides was obtained with the application of a single age/length ... algorithm. Journal of the Royal Statistical Society Series B: Methodological, 39: 1-22. FRIDRIKSSON, A ... . 1934. On the calculation of age distribution within a stock of cod by means of relatively few age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 11–20 : Auteur(s): Robotham, V. H. and Z. Young U.
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Hydrological conditions and characteristics of icefish (Channichthyidae) distribution on the South Georgia shelf in 1986/87
) distribution on the South Georgia shelf in 1986/87 Abstract / Description: Some characteristics of spatial and ... temporal variability of the distribution of icefish (Channichthyidae) on the South Georgia shelf in ... Paper Title: Hydrological conditions and characteristics of icefish (Channichthyidae ... relation to environmental conditions have been revealed from summaries and analyses of hydrographic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 3–14 : Auteur(s): Shnar, V.N. and V.I. Shlibanov
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Preliminary atlas of Balaenopterid whale distribution in the Southern Ocean based on pelagic catch data
Paper Title: Preliminary atlas of Balaenopterid whale distribution in the Southern Ocean based on ... the locations of pelagic catches of Balaenopterid whales by month between 1931/32–1979/80. Two sets of ... maps were produced. The first series contains 24 maps of catches by species by month, and the second ... March, plus three summary maps of fin whales catches for the years 1952/53–1961/62 combined, for each of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 113-193 : Auteur(s): Mizroch, S.A. et. al
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A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
resource. The MP uses two data sources: the recent trend in longline CPUE and the mean length of the ... across a range of sensitivity tests, although it does deteriorate in conservation terms if the stock ... ) resource in the Prince Edward Islands vicinity Abstract / Description: The status of the toothfish ... future TACs in the face of this appreciable uncertainty. Four Operating Models (OMs) reflecting ... uses two data sources: the recent trend in longline CPUE and the mean length of the catches made. An ... range of sensitivity tests, although it does deteriorate in conservation terms if the stock-recruitment ... regression of the abundance index against time for the last (in the case implemented) five years and mean ... by the mean length of the catch in the MP investigated, it is important to check whether ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 33–69 : Auteur(s): Brandão, A. and D.S. Butterworth