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An assessment of seabird interactions with longlining operations for Dissostichus eleginoides around South Georgia, March–May 1997
using a randomised cluster sampling method, developed to allow representative data to be collected when ... 100% observer coverage could not be achieved. Thirteen seabird mortalities were recorded, all during ...
Meeting Document : WG-FSA-97/09 : Autor(es): Ashford, J.R., Croxall, J.P.
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A revised assessment of the impact of the krill fishery on penguins in the South Shetlands
of penguins are considered to be formed in areas to the north of King George, Nelson and Robert ... fishery and penguins. Krill biomass was estimated to be as large as 200-1500 xl03 tonnes within the ...
Meeting Document : WG-Joint-94/17 : Autor(es): T. Ichii, M. Naganobu and T. Ogishima (Japan)
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An evaluation of reduced target strength estimates reported for krill (Euphausia superba)
derived from them. Their results can be shown to have significant weaknesses in both data used and ... calculations seem to be flawed (no correction for directivity and behavior), contain a significant density ...
Meeting Document : WG-KRILL-90/13 : Autor(es): M.C. Macaulay (USA)
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Determination of a statistically based survey area suitable for hydroacoustic stock assessment of Euphausia superba in the Elephant Island, King George Island, Bransfield Strait area
be shown to exhibit high standing stock (greater than 2 million tons) years, moderate standing stock ... total area (200 m by 200 nm) can be adequately surveyed in 10 to 14 days and covers sufficient area to ...
Meeting Document : SC-CAMLR-VIII/BG/32 : Autor(es): Delegation of USA
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The State of Exploited Fish Stocks in the Atlantic Sector of the Southern Ocean in 1988
. Stocks of C. gunnari around the South Orkney Islands and in the Peninsula region seem to be heavily ... . The level of conservation measures to be established for the stock is, however, dependent on the ...
Meeting Document : WG-FSA-88/14 : Autor(es): K.-H. Kock and F.-W. Köster (FRG)
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Development of methods for evaluating the management of benthic impacts from longline fishing using spatially explicit production models
vulnerable marine ecosystems (VMEs). We describe a spatially explicit production model that can be used to ... size of these impacts in the scenarios tested were small, we recommend that research be focused, at ...
Meeting Document : WG-SAM-10/19 : Autor(es): A. Dunn, S.J. Parker and S. Mormede (New Zealand)
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The feeding peculiarities of the Antarctic seals in the region of the archipelago of Argentina Islands
can be used as «species indicators» of krill distribution and quantity in the given region. It is ... condition of Antarctic ecosystem and biovariety preservations in planetary scale. But also can be used for ...
Meeting Document : WG-EMM-12/P01 : Autor(es): I. Dykyy
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Slow recovery of previously depleted demersal fish at the South Shetland Islands, 1983–2010
Shetland fisheries as an example, current management rules for Southern Ocean fisheries, deemed to be ... precautionary and disallowing depletion beyond which a stock can recover in 2-3 decades, may be unrealistic in ...
Meeting Document : WG-FSA-12/P01 : Autor(es): E.R. Marschoff, E.R. Barrera-Oro, N.S. Alescio and D.G. Ainley
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Influence of the quality and quantity of data from a multi-year tagging program on bias and precision of biomass estimates from an integrated stock assessment – update
and the resulting data should not be used in stock assessments with only few years of data available ... assessments, since data obtained from a tagging program in recent years only can be sufficiently informative ...
Meeting Document : WG-FSA-12/18 : Autor(es): P.E. Ziegler (Australia)
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A preliminary stock assessment in SSRUS 486A, G: A Bayesian and CPUE based biomass dynamic model
contributed little to the abundance estimates. This indicates that other modelling framework should be ... observed and tagging and release program. Bayesian data-poor models seem to be appropriated to treat data ...
Meeting Document : WG-SAM-13/29 : Autor(es): R. Wiff, J.C. Quiroz (Chile) and R. Scott (United Kingdom)