Résultats de la recherche
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Foraging location and range of white-chinned petrels Procellaria aequinoctialis breeding in the South Atlantic
extensively. Most locations were between 30° to 55 °W and 52 °to 60 0W around South Georgia/Shag Rocks and ... widest-ranging of seabirds; they may minimise competition with other Procellariiformes in the South ... substantial risk of high mortality rate in South Atlantic long-line fisheries. Author(s): S.D. Berrow, A.G ... Procellaria aequinoctialis breeding in the South Atlantic Approval: Approved ...
Meeting Document : WG-FSA-99/20 : Auteur(s): S.D. Berrow, A.G. Wood and P.A. Prince (United Kingdom)
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Results of acoustic assessment of krill biomass in Subarea 48.2 during summer 1996
southwards of 60 ° 30'S amounts about (883±264.9) thous. t. Therefore, total krill biomass in Subarea ... Abstract: In the period from 24 February to 7 March 1996 in the cruise of RV "Atlantida" ... ; acoustic assessment of krill biomass and distribution was carried out in study area restricted with 59° 10 ... ' S- 60°30' S and 42 °00' W- 50°00 'w within Subarea 48.2. The study area of 19.200 ...
Meeting Document : WG-EMM-96/36 : Auteur(s): Sunkovich, V.I., Kasatkina, S.M., Abramov, V.M., Polischuk, M.I., Sushin, V.A., Shnar, V.N.
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Changes in biomass of eight species of finfish around the South Orkney Islands (Subarea 48.2) from three bottom trawl surveys
Paper Title: Changes in biomass of eight species of finfish around the South Orkney Islands ... the South Orkney Islands (Subarea 48.2) suffered substantial declines from split-year 1977/78 to 1989 ... Germany in 1985, Spain in 1991 and the USA in 1999. From these surveys, estimates of total stock biomass ... were computed for the eight species of finfish which were most abundant in catches. Biomass levels and ... the three examined, with a total of 139 hauls made: 20 in the 50-150 m stratum, 42 in the 150-250 m ... survey are presented in Kock (1986). A total of 30 hauls were made: 3 in the 50-150 m stratum, 9 in the ... conducted during daylight hours. The target time for a haul was 30 minutes, with any haul less than 20 ... that this was met in all three surveys and for all species. A measure of departure from this ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 53–74 : Auteur(s): Jones, C.D., K.-H. Kock and E. Balguerías
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Phytoplankton distribution in the mixed layer: implication to krill abundance
Paper Title: Phytoplankton distribution in the mixed layer: implication to krill abundance ... distribution of phytoplankton in the Antarctic Ocean. Since little is known about mixed layer dynamics in the ... model. Available CTD data suggest that the mixing in the upper layer is less than what we expected ... . However, the effect on the dynamics is vital, affecting the distribution of particles in the upper ocean ... the mixed layer in the Pacific water, north of the front, ranges between 30 and 50 meters. A sharp ... model is extensively used in simulating particle diffusion and animal aggregation. Skellam (1951) uses ... is shown beneath buoyancy frequency profile. 343 o 10 20 30 40 .5: 50 0+- D.. (J ... -0 10910 Ne 10910 N e 0 1 2 3 4 0 1 2 3 4 0 0 10 10 20 20 30 30 40 40 /""'. E ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Auteur(s): Yamazaki, H. and T.R. Osborn
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 1994 winter and 1994/95 pup-rearing season
1994 winter. In the 1994/95 summer the number of entangled seals (20) was also the lowest yet recorded ... previous year. The proportion of adult animals affected (20%) was slightly lower than 1994. The proportion ... of females involved (40%) was 26% less than the previous year. The incidence of severe injury (30 ... Abstract: Surveys of Antarctic fur seals entangled in man-made marine debris were carried out for ...
Meeting Document : SC-CAMLR-XIV/BG/08 : Auteur(s): Delegation of the United Kingdom
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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
Abstract: In-situ measurements of target strength (TS) were made of Antarctic zooplankton ... midwater trawl was used to sample the zooplankton populations and animal length-frequency data were ... scattering is from each animal's spheroidal nucleus. Consistent with the measurements of encaged krill ... (5):2985-2988 (1993)], the TS of in-situ krill are shown to fit a deformed cylinder model [T.K ...
Meeting Document : WG-Krill-94/12 : Auteur(s): D.A. Demer and R.P. Hewitt (USA)
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Report on fish by-catch on exploratory fishing in Divisions 58.4.1 and 58.4.2
undertaken in Divisions 58.4.1 and 58.4.2 during the 2012 to 2018 seasons. Fish by-catch comprised 14 species ... or groups of species. In 2018, by-catch represented 12% of the total catch (43 tonnes over 307 tonnes ... eastern blocks where Macrourus CPUE also increased in the last 3 years. Macrourus CPUE was 23kg/1000 hooks ... Abstract: In this paper, we report on fish by-catch during exploratory fishing activities ...
Meeting Document : WG-FSA-18/28 : Auteur(s): C. Péron, P. Yates, D. Maschette, C. Chazeau, P. Ziegler, D. Welsford, N. Gasco and G. Duhamel
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On the state of Champsocephalus gunnari stock in Subarea 48.3 and methods of its assessment
surveys in 1990). As a result, over more than 10 years bottom surveys pervert the real state of near ... Abstract: The unusually effective fishery on mackerel icefish (C.gunnari) in the South Georgia ... thousand tons, and the followed bottom trawl surveys by Russia and Great Britain in December 1999- February ... stock assessment was repeatedly raised on the meetings of Working Group on Fish Stock Assessment (WGFSA ...
Meeting Document : WG-FSA-00/45 : Auteur(s): K. Shust, V. Senioukov, P. Gasiukov and A. Kozlov (Russia)
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A preliminary assessment and revised growth model of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on results from the 2017 random stratified trawl survey
, abundance and yield in Division 58.5.2 to the west of 79 o 20’ E using standard CCAMLR methods (CMIX and ... 2018/19 season respectively satisfied the CCAMLR decision rules. Given their apparent plasticity in ... Abstract: The annual random stratified trawl survey was undertaken in Division 58.5.2 in the ... growth model based on recent cohort progressions indicated an increase in size-at-age compared to the ...
Meeting Document : WG-FSA-17/22 : Auteur(s): D. Maschette, P. Burch, P. Yates and D. Welsford
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Fishery Report: Exploratory fishery for Dissostichus spp. in Subarea 48.6
defined in CM 33-03. The fishing season was from 1 December 2009 to 30 November 2010. Environmental ... fishery. TOT 48.6 7 5.4 Mitigation measures 18. In 2008, the Commission agreed to the Year-of ... Commission agreed that the Year-of-the-Skate should be extended to 2009/10 in order to allow for sufficient ... 6.14 to 6.21). 20. During WG-FSA-10 it was concluded that the Year-of-the-Skate had been a success ...
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