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Seabird mortality and the Falkland Islands trawling fleet
the warp cable, while feeding on factory discharge at the stern of the vessel. An unknown proportion ... melanophris), were killed by finfish trawlers during this period. Significant levels of mortality were also ... recorded on the Patagonian Shelf, north of the Islands. Birds were killed after being dragged underwater by ... of these birds become impaled on a splice in the cable, which was situated on average around 50-100m ...
Meeting Document : WG-FSA-03/91 : Автор(ы): B.J. Sullivan, T.A. Reid, L. Bugoni and A.D. Black (United Kingdom)
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REVISED AGE AND GROWTH ESTIMATES FOR ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
Abstract: A previous study on the age and growth of Amblyraja georgiana in the Ross Sea suggested ... (Francis and Ó Maolagáin, 2005). We present an alternative interpretation of age and growth in A. georgiana ... caudal thorns instead of broad diffuse bands, we have generated growth curves that suggest much slower ... growth, greater ages at maturity (about 20 years compared with 6–11 years) and greater maximum ages (28 ...
Meeting Document : WG-FSA-08/21 : Автор(ы): M.P. Francis (New Zealand) and M.J. Gallagher (Ireland)
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SCAR Report on Marine Acoustics and the Southern Ocean
workshop on marine acoustic studies at the University of Cadiz, Spain in January 2006. The purpose of the ... workshop was to review improvements in knowledge and understanding of the interactions between marine ... . Mitigation procedures were discussed and a number of recommendations set for future activities and acoustic ... research in Antarctica. This paper provides a detailed report of the Cadiz workshop and is a supplementary ...
Meeting Document : CCAMLR-XXV/BG/23 : Автор(ы): Submitted by SCAR
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Selectivity-induced bias in growth parameter estimates
Abstract: A short simulation study has been carried out to investigate the size of the bias in ... estimates of growth parameters resulting from fish of different sizes having different probabilities of ... probability equal to an assumed relative selectivity at length. Both the mean growth parameters and the ... producing considerably lower estimates of L? and higher estimates of K than in the true population. The ...
Meeting Document : WG-FSA-SAM-05/19 : Автор(ы): G.P. Kirkwood (United Kingdom)
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Commercial krill fisheries in the Antarctic 1973–1988
peak of some 500 000t in 1981/82 before droping to a low level in 1983/84 and stabilising at about 400 ... Abstract: STATLANT data reported to the Commission for the Conservation of Antarctic Marine ... 000t thereafter. Indications are that in terms of both catch and effort the Soviet and Japanese ... fisheries in Statistical Sub-areas 48.1, 48.2 and 48.3 dominate exploitation of krill in the CCAMLR ...
Meeting Document : SC-CAMLR-VIII/BG/11 : Автор(ы): Delegation of South Africa
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The SCAR Antarctic digital topographic database
Abstract: The Antarctic digital topographic database is the outcome of a truly international ... collaborative project between 11 nations. Data capture was co-ordinated in the UK, under the auspices of the ... Scientific Committee on Antarctic Research (SCAR), during a two-year period. Over 200 maps, at scales ranging ... number of satellite images (mostly Landsat photographic products). Editing and harmonization of the data ...
Meeting Document : SC-CAMLR-XII/BG/16 : Автор(ы): Delegation of United Kingdom
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Outline proposal for geographic information services for CCAMLR
staged approach involving different levels of complexity and commitment. At this stage the document only ... -of-the-art capacity for managing spatial data for CCAMLR, particularly the types of information ... handling geographic information, and a phased handover of system development and maintenance to the ... Secretariat. BAS is well-placed to offer these geographic information services, with over 10 years of ...
Meeting Document : WG-EMM-12/70 : Автор(ы): Submitted by the Secretariat on behalf of Adrian Fox, British Antarctic Survey (United Kingdom)
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Fishery selection for Patagonian toothfish in CCAMLR Subarea 48.3, asymptotic or dome shaped?
Abstract: Characterisation of fishery selection is key to reducing uncertainty in the ... with deploying fishing gear at increasing depths, there is the potential for a dome shaped selection ... with age and size to arise. However this type of selection pattern is associated with the estimation of ... highly uncertain quantities of cryptic biomass. A review of the fishery and tagging data from the ...
Meeting Document : WG-SAM-15/29 : Автор(ы): C. Darby, V. Laptikhovsky and M. Soeffker (United Kingdom)
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Beach debris survey – Main Bay, Bird Island, South Georgia 2000/01
Abstract: During the eleventh year of standardised beach surveys of man-made debris at Bird ... Island, South Georgia, a total of 290 items were collected. This represents a 33.3% decrease on the total ... of 408 items recorded in 1999/00 and the lowest levels of summer beach debris (147 items) since the ... 1994/95 season. The difference between the number of items collected in the summer and winter months is ...
Meeting Document : SC-CAMLR-XXI/BG/03 : Автор(ы): Delegation of the United Kingdom
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A study on calibration for commercial echosounder using the bottom backscattering strength from a fishing vessel near the South Shetland Islands in Antarctic
fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... calibration was to analyze the difference between the bottom backscattering strength of the commercial ... echosounder (i.e. ES70) and the scientific echosounder (i.e. EK60) at some transects designated by CCAMLR ... , was examined to verify the calibration result. The analysis result confirmed the possibility of ...
Meeting Document : WG-EMM-16/61 : Автор(ы): Delegation of the Republic of Korea
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