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Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by acoustic surveys
Paper Title: Biomass of myctophids in the Atlantic sector of the Southern Ocean as estimated by ... acoustic surveys Abstract / Description: Acoustic surveys carried out in the summer and autumn of 1987 ... -1989 estimated the biomass of myctophids in the Atlantic sector of the Southern Ocean between 48° and ... species, Electrona carlsbergi, were found only in some limited areas. The bulk of the surveyed biomass of ... surveyed in two stages. Firstly, the area from 51 °30' to 56°00'S and between 20°30' and 26°30'W was ... 47° and 56°S and between 8° and 44°W in the period 30 January to 10 April. The bulk of the biomass ... surveyed from 20 February to 2 March. Secondly, the area with coordinates 51°30' to 55°00'S and 8°00' to ... 18°30' (Figure 7) was surveyed from 20 March to 2 April. These sectors had areas of 52 600 square ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 417–431 : Автор(ы): Filin, A.A., K.V. Gorchinsky and V.M. Kiseleva
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TOWARDS THE BALANCED STOCK ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
Abstract: Last two years two different approaches were used for stock assessment of Antarctic ... toothfish in the Ross Sea. One of them, the CASAL model, (Dunn & Hanchet, 2007; Bull et al., 2007) is ... ) data. Besides that, some sorts of data, e.g. tagging data, are used in these models in quite different ... information was also quite different: while in TISVPA all sources of data gave rather coherent signals about ...
Meeting Document : WG-SAM-08/08 : Автор(ы): D. Vasilyev and K. Shust (Russia)
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An assessment of the impact of krill fishery on penguins in the South Shetlands
season (December-March) in the South Shetland Islands (Subarea 48.1) was assessed based on available ... information on fishery, penguins and krill biomass. The catch is very low in December followed by roughly ... intensity to the shelf and slope of Livingston or Elephant Island. In contrast, the food consumption by ... penguins is estimated to be large in the shelf and slope near King George Island (11,680 t/10-day), whereas ...
Meeting Document : WG-KRILL-93/07 : Автор(ы): T. Ichii, M. Naganobu and T. Ogishima (Japan)
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Recent trends in numbers of four species of penguins at the Prince Edward Islands
and southern rockhopper penguin E. chrysocome. In December 2008 it was estimated that some 65 000 ... pairs of king penguins were incubating eggs at Marion Island, the larger of the two islands in the group ... in numbers of king penguin chicks that survived to the end of the winter period, but there was ... considerable fluctuation in chick production in the 1990s. It was roughly estimated that on average 88% of king ...
Meeting Document : WG-EMM-10/P01 : Автор(ы): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper
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Seamount-specific biomass estimates from SSRU 88.2H in the Amundsen Sea derived from mark-recapture data
on almost every seamount in every year and usually in proportion to the level of tagging on the ... seamount in the previous year. Trends in local biomass estimates for individual seamounts and SSRU 88.2H ... Abstract: Mark-recapture data for Antarctic toothfish from individual seamount features in SSRU ... complex, and residence time on particular seamounts declines rapidly over 1–4 years. Fishing has occurred ...
Meeting Document : WG-FSA-14/58 : Автор(ы): S.J. Parker and S. Mormede (New Zealand)
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Analysis of the krill fishery in Subarea 48.1 considering trawl fishing method used (2010–2016)
Abstract: An analysis of spatio-temporal variability of CPUE indices in the krill fishery in ... subarea 48.1 by years and small-scale management units, including inter-annual, monthly and inter-vessel ... in the Bransfield strait, where the main fishery in Subarea 48.1 is concentrated The possibility of ... krill biomass in SSMU during the fishing season is discussed. Variability of monthly average ...
Meeting Document : WG-EMM-17/27 : Автор(ы): S. Kasatkina S. and L. Boronina
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Current work towards estimating krill consumption by flying seabirds in CCAMLR Divisions 58.4.1 and 58.4.2
parameter input values. We have conducted tracking work on four species in two regions over two years to ... Abstract: We describe current work to obtain krill consumption estimates for flying seabirds in ... estimating krill consumption by flying seabirds in CCAMLR Divisions 58.4.1 and 58.4.2 Approval: Approved ...
Meeting Document : WG-EMM-16/67 : Автор(ы): L. Emmerson and C. Southwell
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Foraging areas of black-browed and grey-headed albatrosses breeding on Macquarie Island in relation to marine protected areas
34 % of their time foraging in MPAs. 4. Black-browed and grey-headed albatrosses spent 30 % and 15 ... -order predators, there is a paucity of data that can be used to evaluate their efficacy in achieving ... this purpose. 2. We assessed the effectiveness of a network of MPAs around Macquarie Island in the ... Exclusion Zone around Macquarie Island. In contrast, grey-headed albatrosses (T. chrysostoma) spent on only ...
Meeting Document : WG-FSA-04/49 : Автор(ы): A. Terauds, R. Gales, G.B. Baker and R. Alderman (Australia)
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Proposal for an extension to the mark recapture experiment to estimate toothfish population size in Subarea 48.4
assessment of D. eleginoides stock size in the Northern Area of 48.4 estimates a vulnerable biomass of ... between 1,000 to 2,000 tonnes. 3. The UK proposes to continue the mark-recapture experiment in Subarea ... 48.4 in the 2008/09 fishing season so as to allow for a full assessment of D. eleginoides stock size in ... the Northern in 2009. 4. Additionally, the UK proposes to commence a mark-recapture experiment in the ...
Meeting Document : WG-FSA-08/46 : Автор(ы): J. Roberts and D. J. Agnew (UK)
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A review and update of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified stochastic wave born approximation
Abstract: Using data collected from US AMLR surveys conducted in the South Shetland Islands we ... review the trends in biomass, size frequency distribution and proportional recruitment of Antarctic Krill ... (Euphausia superba) between 1997 and present. Over the last five years proportional recruitment as been ... . Use of acoustic windows based on the range of krill size increases variability in biomass estimates ...
Meeting Document : WG-EMM-06/32 : Автор(ы): C.S. Reiss and A.M. Cossio (USA)
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