Search results
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Plans for a multi-national coordinated investigation focusing on the krill-based ecosystem in Area 48 during the 2015-16 austral summer
collection from research and fishing vessels, together with remotely sensed data obtained from moorings ... research and fishing vessels, together with remotely sensed data obtained from moorings and gliders ...
Meeting Document : WG-EMM-14/10 : Author(s): J. Watkins (United Kingdom), O.R. Godø, K. Kovacs (Norway) and P. Trathan (United Kingdom)
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Reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in the 2010/11 and proposal of the consecutive survey in the 2011/12
, although there was no significant difference. Among two species of toothfish, Dissostichus mawsoni ... for D. mawsoni. were higher than those recorded in the previous two fishery periods conducted in earlier seasons ... the three years. Total of 62 individuals of toothfish with good physical condition were tagged and released ... in the 2009/10 survey, although there was no significant difference. Among two species of toothfish ...
Meeting Document : WG-SAM-11/05 : Author(s): K. Taki, T. Iwami and M. Kiyota (Japan)
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Seabird mortality in the Patagonian toothfish longline fishery around the Prince Edward Islands, 1996–2000
and Unreported (IUU) fishing. Independent fishery observers accompanied all but two sanctioned trips between 1996 ... , during the first year, when lines were set during the day and night, a significant number of albatrosses ... away from the islands over the years. We estimate that the combined impact of sanctioned and IUU ... longline fishing around the Prince Edward Islands over the past four years, could have resulted in close ...
Meeting Document : WG-FSA-01/8 : Author(s): D.C. Nel, P.G. Ryan and B.P. Watkins (South Africa)
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Demography of Antarctic krill in the Lazarev Sea (Subarea 48.6) and the Elephant Island area (Subarea 48.1) in 2004
/night differences in the catches into account. Recruitment indices of one-year- old (R1) and two-year ... taking substantial day/night differences in the catches into account. Recruitment indices of one-year ... - old (R1) and two-year-old krill (R2) were calculated for both areas, showing low values for R1 ... after the good krill years in 2001 and 2002. Krill density was lower in the Lazarev Sea, even after ...
Meeting Document : WG-EMM-04/23 : Author(s): V. Siegel (Germany), V. Loeb (USA), B. Bergström (Sweden), S. Schöling (Germany), M. Haraldsson (Sweden), J. Kitchener (Australia), M. Vortkamp (Germany)
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Update of ongoing work on age and growth of Antarctic toothfish (Dissostichus mawsoni) from Division 58.4.1 by Spain
estimates, and comparisons are made between seasons, all seasons together as well as with the parameter ... with the previous estimates, and comparisons are made between seasons, all seasons together as well ...
Meeting Document : WG-FSA-17/66 : Author(s): L.J. López-Abellán, M.T.G. Santamaría, R. Sarralde and S. Barreiro
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Comparison of equal-area cylindrical and circular piston transducers
between cylindrical and circular piston transducers by comparing the performance of the two according ... loss. Under identical conditions of excitation, isotropic ambient noise, and detection threshold of 20 ... and circular piston transducers by comparing the performance of the two according to the principle ... loss. Under identical conditions of excitation, isotropic ambient noise, and detection threshold of 20 ...
Meeting Document : WG-EMM-95/08 : Author(s): Foote, K.G.
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Development of methods relevant to feedback management (FBM) for the krill fishery
, as presented in SC-CAMLR XXXVI/BG20 requires acoustic data to be collected, processed and reported continuously ... summer 2018-2019. Author(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A ... and predator needs. A future developed FBM system, as presented in SC-CAMLR XXXVI/BG20 requires acoustic data ... studies will take place during the Austral summer 2018-2019. ...
Meeting Document : WG-EMM-18/08 : Author(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad
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Mackerel icefish size and age at South Georgia and Shag Rocks
and 2002. Most surveys were between December and February (summer), with one in September (Spring). Mean ... total lengths (TL) of age-classes were determined for each year by examining length frequency plots ... in the length-frequency distributions. Lengths of age-classes derived by these two methods were ... not statistically different. Age-class 1 was found for all surveys at South Georgia but was absent for 3 years ...
Meeting Document : WG-EMM-03/7 : Author(s): A.W. North (United Kingdom)
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Habituation to an acoustic harassment device (AHD) by killer whales depredating demersal longlines
the vessel (n = 1,812 records) were collected during 45 phases of AHD activation and 30 phases during which ... the AHD was turned off. Two multi-exposed killer whale social units fled over 700 m away from the vessel ... . In addition to raising significant conservation concerns, this rapid return of initial depredation behaviour ... (n = 1,812 records) were collected during 45 phases of AHD activation and 30 phases during which the AHD ...
Meeting Document : WG-FSA-14/P04 : Author(s): P. Tixier, N. Gasco, G. Duhamel and C. Guinet
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
on model outputs of withholding from a stock assessment between one and eight years of age frequency ... of withholding from a stock assessment between one and eight years of age frequency and/or tag recapture data ... the effect of not updating an assessment every year, and also the evolution of stock assessments with time ... as more years’ data becomes available. The 2009 stock assessment of Antarctic toothfish in the Ross Sea ...
Meeting Document : WG-SAM-11/17 : Author(s): S. Mormede (New Zealand)