Résultats de la recherche
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 and 120 kHz
Abstract: Differences in the target strength of adult Antarctic krill (Euphausia Superba) at 38 ... and 120 kHz have been inferred from differences in the mean back-scattering strength of swarms ... simultaneously insonified at these two frequencies in studies off the South Orkneys and Elephant Island in March ... 1990. Krill in these areas varied in total length between 36 and 60mm. Backscattering strengths at 120 ...
Meeting Document : WG-KRILL-90/28 : Auteur(s): I. Hampton (South Africa)
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Analysis of maturity of Antarctic toothfish in the Amundsen Sea
(Dissostichus mawsoni) reproductive system, caught by the longliner in the Amundsen Sea in February 2006 and ... (57.1%) in 2006 and IV stages of maturity (83.3 %) in 2007 and testes – the IV stage (55%) in 2007. In ... 2007 the oocytes in the ovaries of 16.7% investigated fish has reached the completed maturation and ... definitive size 6484·10-6m, therefore, Antarctic toothfish was ready to spawn in the Amundsen Sea in March ...
Meeting Document : WG-FSA-10/50 : Auteur(s): S.V. Piyanova and A.F. Petrov (Russia)
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Cameras installation by Ukraine at the Galindez, Petermann and Yalour Islands penguin colonies – CEMP Fund project ‘Establishing a CEMP Camera Network in Subarea 48.1’
Abstract: In the report, which is updated paper WG-EMM-16/55, we describe the season activity in ... the Ukrainian Vernadsky Antarctic Station area on installation CEMP cameras in penguin colonies as ... Network in Subarea 48.1'. Work has been provided under support of the National Antarctic Scientific ... Center of Ukraine that is operating Vernadsky Station. In season 2015/2016 we installed nine cameras at ...
Meeting Document : SC-CAMLR-XXXV/BG/27 : Auteur(s): Delegation of Ukraine
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An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) in Division 58.5.2 using CASAL
Abstract: This paper follows preliminary work in 2005 and early 2006 in developing an integrated ... assessment for Patagonian toothfish in Division 58.5.2. It focuses on developing an integrated assessment ... -binned mark-recapture data, can be incorporated into the model. Earlier difficulties in using CASAL have ... been resolved. The results presented here indicate a general downward bias in the expected recaptures ...
Meeting Document : WG-FSA-06/64 : Auteur(s): A. Constable, S. Candy, T. Lamb and I. Ball (Australia)
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Predicting changes in the Antarctic krill Euphausia superba population at South Georgia
Abstract: Variability in the Southern Ocean is frequently reflected in changes in the abundance ... nature and consequences of changes in krill population dynamics that accompany l1uctuations in its ... the abundance and population structure of krill in 1998 and the consequences for predators. Consistent ... with model predictions, in 1998 there was a serial change in krill population structure, low krill ...
Meeting Document : WG-EMM-99/37 : Auteur(s): K. Reid, K.E. Barlow, J.P. Croxall and R.I. Taylor (UnitedKingdom)
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Preliminary analyses in support of the CEMP Review Workshop: serial correlations
Abstract: As part of the preliminary analyses undertaken in preparation for the CEMP Review ... Workshop, the Secretariat has documented serial correlation in time series of CEMP indices. The values ... input to the serial correlation analysis were the ‘transformed’ annual index values reported in WG-EMM ... -03/24. Serial correlation in biological indices occurred in 4, 10 and 33 % of the time series at ...
Meeting Document : WG-EMM-03/27 : Auteur(s): Secretariat
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Shedding new light on the life cycle of mackerel icefish in the Southern Ocean
in the north mature one year earlier than in the south. They have a much shorter life span and die ... Abstract: Mackerel icefish (Champsocephalus gunnari) has a widespread distribution in the ... considerably between populations in the southern Scotia Arc and those living further to the north. Fish living ... in the north. Stocks have declined in most parts of the distributional range due to the impact of ...
Meeting Document : WG-EMM-03/4 : Auteur(s): K.-H. Kock (Germany) and I. Everson (United Kingdom)
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Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 on the basis of the Soviet mesoscale surveys with Isaacs Kidd midwater trawl
Abstract: In the paper the results of the investigations on three mesoscale surveys covering wide ... from 158 to 202 stations were carried out by Soviet research vessels in summer-autumn periods of 1983 ... /84 and 1987/88 and in a spring period 1984/85 by a standard grid of stations according to the ... standard method by Isaacs Kidd Midwater Trawl in the layer 0-100 m. Krill biomass distribution (g/1000 m3 ...
Meeting Document : WG-EMM-98/32 : Auteur(s): V.A. Sushin and K.E. Shulgovsky (Russia)
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SOUTHERN OCEAN SENTINEL: REPORT OF THE FIRST INTERNATIONAL WORKSHOP IN 2009
held at the CCAMLR Headquarters in Hobart in April 2009. The conclusions of that workshop are provided ... presentations. A report of the workshop will be submitted to the Scientific Committee for its considerations in ... . This process will fill an important gap in current discussions on climate change impacts on marine ... ecosystems by the Intergovernmental Panel on Climate Change. It will also assist CCAMLR in addressing climate ...
Meeting Document : WG-EMM-09/37 : Auteur(s): A.J. Constable
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Observations of penguins in the waters off South Orkney Islands, 2011–2013
average number of penguins observed per hour increased from year to year, with 7.8 ind/hour in 2011, 32.8 ... Abstract: In this study, we introduce the initial results from three seasons (2011-2013) of ... penguin observations made in the waters off the South Orkney Islands. The surveys followed pre-determined ... penguins were observed and Chinstrap penguins (Pygoscelis antarctica) dominated in numbers during all three ...
Meeting Document : WG-EMM-13/35 : Auteur(s): B.A. Krafft, G. Skaret (Norway) and P. Trathan (United Kingdom)