Résultats de la recherche
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Updated status of Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in inshore sites of the South Shetland Islands: results of a long-term monitoring program (1983–2016) at Potter Cove
, to achieve a 33-year record, 1983-2016, to monitor changes in the prevalence of three species of ... around the South Shetland Islands: 1) a continuous increase in the abundance of N. rossii; 2) further ... decline in G. gibberifrons recruitment evidenced by the low proportions of juvenile fish; and 3) a high ... by industrial fishing during the late 1970s-onset of the 1980s. Reasons for lack of recovery in G ...
Meeting Document : WG-FSA-16/02 : Auteur(s): E. Barrera-Oro, E. Marschoff and D. Ainley
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COMPARATIVE CHARACTERISTICS OF BASIC BIOLOGICAL PARAMETERS OF TWO TOOTHFISH SPECIES IN HIGH-LATITUDE SEAS OF THE ANTARCTIC
» in the areas of the Ross Sea and the Antarctic continental shelf (statistical subareas 88.1 and ... 58.4.1) outside the exclusive (marine) economic zones of foreign states, in the period from 5 November ... , 2007 till 24 March, 2008. In the paper size characteristics of Antarctic and Patagonian toothfishes ... caught in different areas of the Antarctic shelf were given as well as characteristics of maturity level ...
Meeting Document : WG-FSA-08/12 : Auteur(s): A.K. Zaytsev (Ukraine)
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Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea
Abstract: Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas ... simply have been a function of differences in survey and data analysis techniques used at each site. More ... interestingly, the magnitudes of abundance and between-year gradients of change of abundance at each site were ... mirrored by those at the other location; for example, 1991 and 1994 were years of very low krill density at ...
Meeting Document : WS-AREA 48-98/11 : Auteur(s): A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK)
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An analysis of early change in the blubber thickness of minke whales as an indicator of krill availability
): Y. Shimadzu (USA) Title: An analysis of early change in the blubber thickness of minke whales as an ... Abstract: Data on blubber thickness measured on 26,751 minke whales caught in the IWC Areas III ... for these factors, considerable yearly variations were shown in the thickness in December, in which 12 ... . Comparison based on the difference between the thickness in December in successive years was proved valid, by ...
Meeting Document : WG-CEMP-87/18 : Auteur(s): Y. Shimadzu (USA)
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To the problem of assessment of probability of finding Antarctic krill concentrations in Division 58.4.2
Abstract: In 1994 the group of above mentioned authors has completed the first stage of ... researches for creation of an imitation model of krill distribution and search in the Cooperation and ... of fishing activity of Soviet FVs in the synoptic, seasonal and annual aspects,- Working out of ... (Ukraine) Title: To the problem of assessment of probability of finding Antarctic krill concentrations in ...
Meeting Document : WG-Krill-94/7 Rev. 1 : Auteur(s): V.N. Yakovlev, V.A. Bibik and L.M. Kokoz (Ukraine)
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Estimation of krill biomass from an acoustic survey carried out in 1986, during a study of predator–prey interactions around the western end of South Georgia
predators and their pelagic prey, was carried out in 1986 around the western end of South Georgia. This ... intensity in the shallower part of the area, so a method of post hoc stratification has been devised to ... an acoustic survey carried out in 1986, during a study of predator–prey interactions around the ... Abstract: An acoustic survey, designed to study the distribution of shore-breeding, marine ...
Meeting Document : WG-EMM-99/17 : Auteur(s): C. Goss and S. Grant (United Kingdom)
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Diurnal changes of some biological characteristics of Euphausia superba Dana in swarms (westward of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by biologist-observer)
out during the working period of commercial trawler ‘Grigory Kovtun’ in the fishing area near the ... biological characteristics of Euphausia superba Dana in swarms (westward of the South Orkney Islands, 24 ... station consisted of series of catches by mean the usual commercial trawl (9-12 tows per every station ... of swarms. When diurnal migration are absent (particularly at most later season) the diurnal changes ...
Meeting Document : WG-KRILL-92/09 : Auteur(s): A.V. Vagin, R.R. Makarov and L.L. Menshenina (Russia)
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Preliminary stock assessment of Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet islands (part of subarea 58.6)
Patagonian toothfish (Dissostichus eleginoides) in the vicinity of Crozet islands (part of subarea 58.6 ... Abstract: A preliminary assessment is undertaken to increase the knowledge of the Patagonian ... show different estimates for the initial and current biomass. A range of 55000 to 115000 tons is ... observed for B0 estimates and SSB never fall below 70% of the initial biomass considering the actual level ...
Meeting Document : WG-FSA-13/05 : Auteur(s): R. Sinegre and G. Duhamel (France)
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INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS
EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS ... accounts for both the variation associated with sub-sampling of the random length frequency (LF) sample for ... Monte Carlo multinomial replicates of the observed age length key (ALK) with each ALK used to generate a ... replicate age frequency sample. For each replicate a random draw of the ageing error matrix is taken and ...
Meeting Document : WG-SAM-09/08 : Auteur(s): S.G. Candy (Australia)
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Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata Fischer 1885 in January/February 1985
investigations of the Federal Republic of Germany on Notothenia rossii marmorata Fischer 1885 in January/February ... Author(s): Delegation of the Federal Republic of Germany Title: Preliminary results of ...
Meeting Document : SC-CAMLR-IV/BG/11 : Auteur(s): Delegation of the Federal Republic of Germany