Résultats de la recherche
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Statistical problems in krill stock hydroacoustic assessments
Paper Title: Statistical problems in krill stock hydroacoustic assessments Abstract / Description ... applied to establish biomass in a survey area and the second is the improvement in accuracy of target ... -strength measurements. In the case of statistical methods, there are no clear guidelines for deciding what ... the population is fixed in space, relative to the sampling interval. There remain several unsatisfied ... is approximately 20 n miles from Seal Island, a known penguin rookery. The large swarm observed in ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... distributed. Consider as a test case that we have two surveys in two consecutive years giving identical ... SC-CAMLR-VII/BG/22 STATISTICAL PROBLEMS IN KRILL STOCK ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Auteur(s): Macaulay, M.C.
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Diet composition of Dissostichus eleginoides in Subarea 48.3, Dr Eduardo Holmberg survey March/April 1996
Abstract: A diet analysis of the patagonian toothfish Diissostichus eleginoides in the Subarea ... 48.3 in March/April 1996 was carried out by frequency of occurrence (F%) and coefficient "Q" ... ; (%) methods. The samples consisted chiefly of immature specimens, with predominant length ranges of 30-70 cm ... occurred scarcely in the stomachs and only at SR and SG respectively. Lepidonotothen kempi, Champsocephalus ...
Meeting Document : WG-FSA-96/29 : Auteur(s): Barrera-Oro, E., Marschoff, E., Casaux, R.
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Paper Title: Analysis of variability of krill size and fish by-catch in the Japanese krill ... Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... and haul) based on a state–space model, separating biological process error in the population dynamics ... from fishery process as observation error. In both krill length and by-catch fish number, the ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im at ... Year E st im at ed m ea n le ng th (m m ) 60 50 40 30 20 (c) Adult size in Subarea ... ed m ea n le ng th (m m ) 60 50 40 30 20 (b) Adult size in Subarea 48.2 Overall trend ... 40 30 20 (e) Year Area Y–A Ves. Cruise Haul Ind. Va ria ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Auteur(s): Okuda, T. and M. Kiyota
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Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast
Paper Title: Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae ... Chilean fisheries of the Patagonian toothfish, Dissostichus eleginoides is reviewed in order to study ... selectivity of different types and sizes of hooks used in longlines. Original data obtained during 1991 off ... % more efficient than hooks No. 4. Using different bait does not result in significant differences. It is ... , 1898) in Chile started as early as 1955, the year in which the exploration of the continental slope ... 50~-------------------------------------------- 40 30 20 10 0 40 50 40 30 20 10 ... hooks in the VIII Region is presented in Table 3 together with mean length. Length frequency ... WG-FSA-91/11 HOOK SELECTIVITY IN THE LONGLINE FISHERY ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 107–119 : Auteur(s): Moreno, C.A.
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Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses
Paper Title: Diet study of Antarctic toothfish caught in the east Antarctic based on stomach ... for Antarctic toothfish (Dissostichus mawsoni) in the small-scale research unit (SSRU) 5841C in the ... lesser extent squid. FA profiles in muscle tissues of Antarctic toothfish were very similar to those of ... toothfish and the trophic relationship between the toothfish and other species in the east Antarctic using ... a lesser extent squid. FA profiles in muscle tissues of Antarctic toothfish were Park et al. 30 ... , 1987; Michener and Schell, 1994). δ13C in an animal usually occurs within 1‰ compared with that of ... analyses to infer diet of Antarctic tooth- fish caught in the southern Ross Sea. CCAMLR Science, 20: 21–36 ... ° 95°E Sampling site 5841C 0 1 2 3 4 5 6 0 10 20 30 (32) Cu m ul at iv e n um be r o f ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Auteur(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*
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Fishery Report 2013: Exploratory fishery for Dissostichus spp. in South Sandwich Islands (Subarea 48.4)
Description / Abstract: Fishery Report 2013: Exploratory fishery for Dissostichus spp. in South ... by the year in which that season ended, e.g. 2013 represents the 2012/13 CCAMLR fishing season (from ... (N) and the number of fish measured (n) in each year are provided. Note: length-frequency ... . eleginoides tagged in each year. The number of fish recaptured by each vessel/year is provided in brackets ... cooler, more southerly waters. Parameter estimates 20. The biological parameters assumed in the ...
Document : Site Section: Publications
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MULTIPLE TIME SCALES OF VARIABILITY IN THE KRILL POPULATION AT SOUTH GEORGIA
empirically derived estimates of both the magnitude and timing of recruitment in each year showed the greatest ... conducted in the early, middle and late period of the summers of 2001 to 2005, together with krill ... abundance was highest during the middle of the summer in 3 years and in the late period in 2 years; in the ... ecosystem-based management of any krill fishery in the region. Krill acoustic density data from surveys ...
Meeting Document : WG-EMM-08/48 : Auteur(s): K. Reid, J. Watkins, E. Murphy, P. Trathan, S. Fielding and P. Enderlein (United Kingdom)
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Annual report of research fishing operations at Division 58.4.4b in 2016/17 fishing season
data set, C2 and Observer data, was provided by the CCAMLR Secretariat on the 20th April 2018 (30 May ... , 2018 for September to November French cruise). In this paper, the data set during last fishing season ... toothfish (Dissostichus eleginoides) at Division 58.4.4b in 2016/17 fishing season by France and Japan. The ... report of research fishing operations at Division 58.4.4b in 2016/17 fishing season Approval: Approved ...
Meeting Document : WG-SAM-18/31 : Auteur(s): Delegations of Japan and France
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Preliminary report on biological observations and exploratory fishing data collected in the South Georgia area during the 1985/86 cruise of MT Carina
in the South Georgia area during the 1985/86 cruise of MT Carina Abstract / Description: A fish ... survey in South Georgia waters was undertaken from November 1985 to January 1986 as a part of the on ... mesh sizes (47 and 60 mm) were used with a bottom trawl of 32 m head rope. Catch data were collected in ... % while N. rossii and D. eleginoides were present only as by-catch. In sampling catches two length groups ... + Age groups (years) O~~==~,==~==~,===;~~,==~==~,==~~ Figure 8 20 30 40 ~ Total length (cm ... ) within the whole shelf area of South Georgia. In the 1983/84 season, as in the previous year, the ... . georgianus in research catches in subdivision 61 consisted of three separate length groups: 20-24, 32-41 ... in those two seasons consisted of the year class of 1980 (Sosinski, unpublished). In the catches ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Auteur(s): Kreft, K. and J. Szynaka
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2009/10
2009–10. During the 2009–10 fishing year most of the catch in Subarea 88.1 came from the slope SSRUs ... Abstract: The exploratory fishery for Dissostichus spp. Has now been operating for 14 years in ... Subarea 88.1 and for 9 years in Subarea 88.2. This report summarises the timing, depth, and location of ... fishing together with the catch of Dissostichus spp and bycatch species by year for the period 1997–98 to ...
Meeting Document : WG-FSA-10/23 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)