Resultados de la búsqueda
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Demographic studies of Antarctic krill Euphausia superba Dana in the Cooperation and Cosmonaut Seas (Indian sector of the Southern Ocean)
Abstract: The reproductive state and size composition of Euphausia superba collected in the ... mortality rates. The duration of the life cycle of E.superba exceeded 5 years in the Cosmonaut Sea and 6 ... years in the Cooperation Sea. Assuming growth for only 180 days per year, growth rates ranged from 0.120 ... researchers in the Prydz Bay region for 1981-1985. In mid summer, E.superba of age 2+ to 4+ were predominant ...
Meeting Document : WG-Krill-94/16 : Autor(es): E.A. Pakhomov (Ukraine)
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Recent increase and southern expansion of Adelie penguin populations in the Ross Sea, Antarctica, related to climatic warming
Abstract: The numbers of Adelie penguins Pygoscelis adeliae (Hombron and Jacquinot) in the Ross ... pronounced in McMurdo Sound, where the species’ breeding range has recently been extended 3 km south to Cape ... climatic variation in the McMurdo Sound region. We suggest that the dynamics of Adelie penguin populations ... may be very sensitive indicators of changes in the Antarctic climate. Published in: New Zealand ...
Meeting Document : WG-CEMP-92/22 : Autor(es): R.H. Taylor and P.R. Wilson (New Zealand)
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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 ... in the latter area. This is attributed to milder climatic conditions and better food supply in the ... South Georgia area as compared to Bouvet Island. The differences in the growth and maturation rates of ... maturation in both areas begins earlier and stops later than during the colder epoch. Two spawning peaks are ...
Meeting Document : SC-CAMLR-VIII/BG/22 : Autor(es): Delegation of USSR
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Monitoring variability and change in the plankton communities of the Scotia Sea through Continuous Plankton Recorder surveys
Abstract: The northern regions of the Scotia Sea demonstrate notable variability in environmental ... conditions, particularly in the location of the Polar Front. This has a strong influence on patterns of ... has been monitored through conducting a series of Continuous Plankton Recorder (CPR) tows in the South ... abundance being far more variable than species composition within and between tows. In general ...
Meeting Document : WG-EMM-16/29 : Autor(es): G.A. Tarling, M.Z. Wootton, D.G. Johns, T.D. Jonas, E.J. Murphy and P. Ward
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Demographic effects of extreme weather events: snow storms, breeding success, and population growth rate in a long-lived Antarctic seabird
consequences of such events. In this study, we aimed to quantify the effects of snow storms on nest survival in ... population growth rate. We used detailed data on daily individual nest survival in a year with frequent and ... season and nearly 30% of the interannual variation in colony productivity in period 1985–2014. Snow ... also found state-dependent effects of snow storms and chicks in poor condition were more likely to die ...
Meeting Document : WG-EMM-16/P13 : Autor(es): S. Descamps, A. Tarroux, Ø. Varpe, N.G. Yoccoz, T. Tveraa and S.-H. Lorentsen
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New possibilities of krill-dependent indicator species monitoring – UAV survey in Subarea 48.1
Abstract: Unmanned Aerial Vehicles specially adapted for operation in polar regions were used to ... , Chabrier Rock and Penguin Island (Subarea 48.1) in three austral summer seasons (2014/15, 2015/16, 2016/17 ... software. In selected colonies a comparison with the results of measurements taken at the same time from ... : Adélie, gentoo and chinstrap penguins. In total approx. 30 000 nests in twelve breeding colonies were ...
Meeting Document : WG-EMM-17/03 : Autor(es): M. Korczak-Abshire, A. Zmarz, M. Rodzewicz, R. Storvold, M. Kycko, I. Karsznia, A. Kidawa and K.J. Chwedorzewska
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Report of the UK groundfish survey at South Georgia (CCAMLR Subarea 48.3) in January 2017
differences in C. gunnari diet composition were observed. Krill were almost absent from fish sampled at Shag ... Rocks, at low levels in the northern strata of South Georgia and more abundant in the Southern strata ... Dissostichus eleginoides were low. A small peak in the length frequency distribution was present at lengths of ... icefish species were very similar to results obtained in 2015. However, the estimated biomass of ...
Meeting Document : WG-FSA-17/44 : Autor(es): M. Belchier, V. Foster, S. Gregory, S. Hill, V. Laptikhovsky, P. Lafite and L. Featherstone
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Joint report on exploratory fishing in Divisions 58.4.1 and 58.4.2 between the 2011/12 and 2017/18 fishing seasons
arrangements are in place as set out in Conservation Measures 41-11 and 41-05. WG-FSA-16/29 outlined the first ... objectives, methods and milestones in accordance with ANNEX 24-01/A. Subsequent research progress has ... mitigation of Macrourus by-catch in research block 58.4.1_6, and estimation of Macrourus biomass and ... sustainable bycatch in Divisions 58.4.1 and 58.4.2 (WG-FSA-17/16); and description of encounter rates of VME ...
Meeting Document : WG-SAM-18/35 Rev. 1 : Autor(es): Delegations of Australia, France, Japan, Republic of Korea and Spain
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The identification of scientific reference areas in the wider context of MPA planning – report of the CCAMLR scholarship recipient
Abstract: Domain 1 faces changes to the climate and changes in the operation of the fishery, in ... which the recent D1MPA preliminary proposal is of particular importance. In this context, the ... and have significant benefits in understanding change. Existing monitoring programmes and study sites ... in Domain 1, including integrating programmes such as SOOS, are a strong foundation on which to build ...
Meeting Document : WS-SM-18/17 : Autor(es): A. Capurro, M.M. Santos, R. Cavanagh and S. Grant
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Is our attempt to estimate biomass of Antarctic fish from a multi-species survey appropriate for all targeted species? Notothenia rossii in the Atlantic Ocean sector – revisited
Abstract: Notothenia rossii was the first target species of the fishery in the Southern Ocean ... this species was one of the first conservation measures CCAMLR adopted in 1985. Fish biomass within a ... violated in the case of N. rossii which shows an abundance which is extremely skewed in that a large ... proportion of the population tends to aggregate in small areas while most of the area of distribution is only ...
Meeting Document : WG-FSA-03/12 : Autor(es): K.-H. Kock (Germany), M. Belchier (United Kingdom) and C.D. Jones (USA)