Résultats de la recherche
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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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Revised research plan for the exploratory longline fishery for Dissostichus spp. in 2012/13 Subarea 48.6 and Divisions 58.4.1, 58.4.2 and 58.4.3a (this is a revision of WG-SAM-12/09)
58.4.1, 58.4.2 and 58.4.3a is resubmitted following paragraph 3.24 of WG-SAM-12. In the present proposal ... data, and secondly showed the results of biological features with some discussion of life history in ... operations in the 2012/13 season for all vessels. Catch and efforts were active in two areas in the north of ... Subarea 48.6, two areas in the south of Subarea 48.6, one area in Division 58.4.2, five areas in Division ...
Meeting Document : WG-FSA-12/60 Rev. 1 : Auteur(s): Delegation of Japan
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Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Subarea 48.6
by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... the CPUE method in the block 48.6_3 and 48.6_4. Predicted numbers of tag recaptures from the estimated ... Dissostichus spp. in other blocks. From the analyses of biological data, it is suggested that the northern ... was recaptured in the block 48.6_3 in the current season. This is the first example of very long ...
Meeting Document : WG-SAM-15/06 : Auteur(s): Delegation of Japan
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Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)
echosurvey (January) in an area of about 22000 nm2 the estimated biomass was 847 thousand tons (mean biomass ... December- January). The process of ice melting began in mid November, near Ross Ice Shelf (so called ... krill mainly in the part of Ross Sea between 70° and 75° S but in November and beginning of December ... closer to 75° S while in the end of December and January closer to 70° S were observed. It can suggested ...
Meeting Document : WG-EMM-97/53 : Auteur(s): Kalinowski, J., Azzali, M.
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
factors. This paper reviews the scientific information of whales that could be indicative of changes in ... the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis in the ... whale, which had not been exploited on a large scale. A review of the scientific information in East ... Antarctica (70°E-170°W) showed that the increased krill availability in the middle of the past century could ...
Meeting Document : WG-EMM-16/64 : Auteur(s): Y. Fujise and L.A. Pastene
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2003/04
patterns between seasons is reflected in the mean length and age composition of the catch. In the past few ... different to earlier reviews of the exploratory fishery. In the first instance, it reports catches by the ... the length and age of the toothfish catch and in the bycatch, particularly the increase in catch of ... . Phillips and P.L. Horn (New Zealand) Title: A characterisation of the toothfish fishery in Subareas 88.1 ...
Meeting Document : WG-FSA-04/20 : Auteur(s): S.M. Hanchet, M.L. Stevenson, N.L. Phillips and P.L. Horn (New Zealand)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
years in Subarea 88.1 and for five years in Subarea 88.2. This report summarises the large amount of ... there was a large overrun of the catch limit in the North region, the overall catch limit for Subarea ... 88.1 was only exceeded by 2%. The catch limit was under caught in Subarea 88.2. The concentration of ... truncation of the overall length frequency distribution, and no evidence for a reduction in fish length in ...
Meeting Document : WG-FSA-07/28 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)