Résultats de la recherche
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Assessment of krill flux factors in waters of South Orkney Islands during summer 1996
) was located in the zone of interaction between waters of the Antarctic Circumpolar Current (ACC) and ... in the past. The geostrophic transport of krill across boundaries of the study area was calculated as ... observed, both in terms of the amount of biomass transported and the direction of flux. Due to the location ... Paper Title: Assessment of krill flux factors in waters of South Orkney Islands during summer ... nautical mile (Ei), the mean krill biomass (W,) transported across 1 n mile of the boundary in the ith ... ASSESSMENT OF KRZLL FLUX FACTORS IN WATERS OF THE SOUTH ORKNEY ISLANDS DURING SUMMER 1996 S.M. Kasatkina ... factors in Subarea 48.2. The study area (S0 X 240 n miles) was located in the zone of interaction between ... where high krill concentrations had often been observed in the past. The geostrophic transport of krill ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 195–204 : Auteur(s): Kasatkina, S.M., V.N. Shnar, M.I. Polischuk, A.M. Abramov and V.A. Sushin
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Preliminary results of otolith elemental composition analysis of Dissostichus spp. in Subarea 48.2
Abstract: In order to explore aspects related to the structure of population units and habitat ... Delegation in Subarea 48.2 of CCAMLR during the 2015/16 fishing season. The otoliths through laser ablation ... change of habitats described in the literature for each one of them. The comparison of our results with ... and the samples previously collected in South Georgia and Shag Rocks. In the case of D. mawsoni, the ...
Meeting Document : WG-FSA-17/30 : Auteur(s): Delegation of Chile
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Interannual variability of standardised index of krill abundance in Area 48 according to CCAMLR fishery statistics database
CPUE in Subareas 48.1-48.3 and SSMUs did not correspond to the dynamics of krill density and biomass ... part of krill biomass rather than the total krill biomass in the area. The high variability and ... Abstract: Standardization of fishing effort on the basis of the generalized linear models with ... mixed effect (GLMM) allows to the authors to analyze the specific character of the spatial distribution ...
Meeting Document : WG-EMM-10/17 : Auteur(s): P.S. Gasyukov and S.M. Kasatkina (Russia)
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Monitoring of relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, in years 2000 to 2003
net catches of fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in ... those found in the early 1980s. At Harmony Cove, the relative abundance of N. rossii showed an increase ... in years 2002-2003, whereas G. gibberifrons was absent in the catches. No recovery of the stocks of ... . However, the increase observed in the catches of N. rossii in some years since 1997 might be indicative of ...
Meeting Document : WG-FSA-03/89 : Auteur(s): E. Barrera-Oro, E. Marschoff, R. Casaux and B. Gonzalez (Argentina)
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Composition and characteristics of ichthyofauna in pelagic waters of South Georgia (Subarea 48.3)
ichthyocenosis in the subarea consisted of pelagic fishes (mainly Myctophidae), distributed at a depth range of ... 250 to 300 m, as well as demersal fishes in the pelagic stage of their life cycle. Catches contained ... small ones were caught in the water column. The main food item (up to 60-80%) of both juvenile and adult ... fish taken by the sampling trawl in the water column was found to be krill. Aggregations of juvenile C ... in the second half of the night (Table 3). Table 3: Mean index of stomach fullness for juvenile C ... ). Length composition of juvenile C. aceratus in catches varied from area to area. The largest fish (mean ... pelagic component of the ichthyocenosis in the subarea consisted of pelagic fishes (mainly Myctophidae ... ), distributed at a depth range of 250 to 300 m, as well as demersal fishes in the pelagic stage of their life ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 125–164 : Auteur(s): Frolkina, G.A., M.P. Konstantinova and I.A Trunov
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In situ target strength measurements of Antarctic zooplankton (Euphausia superba and Salpa thompsoni) at 120 khz and 200 khz, corroboration of scattering models, and a statistical technique for delineating species
(5):2985-2988 (1993)], the TS of in-situ krill are shown to fit a deformed cylinder model [T.K ... cumulative distributions (CDF's) of Δσbs derived from the differences in abs measurements at two ... , Antarctica, during the Austral Summer of 1994. Author(s): D.A. Demer and R.P. Hewitt (USA) Title: In situ ... Abstract: In-situ measurements of target strength (TS) were made of Antarctic zooplankton ...
Meeting Document : WG-Krill-94/12 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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Acoustic assessment of potential bias in abundance estimates of mackerel icefish from trawl surveys
that a significant proportion of the stock occurred in midwater. If this is the case, then bottom trawl ... acoustic signal are discussed. The vertical distribution of mackerel icefish in relation to the diel light ... Abstract: In 2000, CCAMLR asked the Working Group on Fish Stock Assessment (WG-FSA), whether ... trawl surveys are the most reliable and appropriate method to survey stocks of mackerel icefish ...
Meeting Document : WAMI-01/05 : Auteur(s): E. van Wijk, T. Pauly, A. Constable and R. Williams (Australia)
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PRELIMINARY ESTIMATION OF PENGUIN BREEDING ABUNDANCE AT SPATIAL-SCALES OF RELEVANCE TO CCAMLR: INCORPORATING UNCERTAINTY IN COUNT DATA
breeding population, and would only account for uncertainty in the accuracy of the count data. However, the ... work was seen as useful in illustrating both the database of penguin count data compiled for the ... Abstract: One recommendation from the Predator Survey workshop was the undertaking of some ... estimation of SSMU-specific gentoo and Adélie breeding abundance in Area 48, and similar analyses of east ...
Meeting Document : WG-EMM-08/53 : Auteur(s): H. Lynch, R. Naveen (USA), J. McKinlay, C. Southwell (Australia), P. Trathan (United Kingdom), W. Trivelpiece, S. Trivelpiece (USA) and D. Ramm (CCAMLR Secretariat)
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Growth and maturation of Euphausia superba Dana in northern areas of its distribution range (with reference to South Georgia and Bouvet Island areas)
maturation rates as well as the average minimal sizes of E.superba are appreciably higher in the former than ... South Georgia area as compared to Bouvet Island. The differences in the growth and maturation rates of ... in the latter area. This is attributed to milder climatic conditions and better food supply in the ... E.superba between these two areas persist with a change of climatic epochs. During the warmer climatic epoch ...
Meeting Document : SC-CAMLR-VIII/BG/22 : Auteur(s): Delegation of USSR
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Precision of growth band determination from eyestalk sections of Antarctic krill (Euphausia superba) preserved in formalin
feedback management of krill fisheries. Samples stored in 70% ethanol provide an opportunity to detect the ... common in previous decades. Out of 162 Antarctic krill individuals preserved in 5% formalin, the growth ... the precision of the growth bands.Results show decreased CV and APE values and an increase in the EPA ... specimens preserved in formalin, and will benefit the stock assessment and acoustic estimation of this ...
Meeting Document : WG-EMM-18/P16 : Auteur(s): G.P. Zhu, Y. Yang, Q. Song and H.T. Zhang