Resultados de la búsqueda
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Performance of an acoustic sonde design
Abstract: The potential of multi-frequency acoustic technology for quantifying fish and plankton ... is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... macrozooplankton and micronekton. It was concluded that in order to survey animals in the size range 0.5-5 cm, it ... would be expedient to use at least three and perhaps as many as 8-10 frequencies in the range 38-420 kHz ...
Meeting Document : WG-EMM-95/09 : Autor(es): Foote, K.G.
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Approaches to monitoring and assessing toothfish in new and exploratory fisheries, with particular reference to Subarea 88.1
would be imprudent to rely solely on any one of these methods at the present time. We recommend that tag ... monitor toothfish – and perhaps as importantly – the wider ecosystem effects of the toothfish fisheries ... . We further recommend that simulation studies be carried out to determine the best way to use the ... effort manipulation approach in all New and Exploratory fisheries, and in particular the current active ...
Meeting Document : WG-FSA-SAM-04/08 : Autor(es): ODriscoll, R.L., Hanchet, S.M.
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Proposal for trials to test modified longline gear as a means to reduce cetacean depredation and mitigate incidental bird catch
Abstract: The UK undertook preliminary trials of the previously described “cone” or “bottle ... conjunction with the observer’s report of that cruise (Basson 2006). Initial results were promising, and the ... UK intends to proceed with further, more extensive trials, in the 2007/08 fishing season in Subarea ... 48.3. Although seabird interactions are expected to be minimal, the trials will stop if 3 seabirds are ...
Meeting Document : WG-FSA-07/31 : Autor(es): Delegation of the United Kingdom
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Oil, paint, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1997/98
Abstract: This report describes and quantifies the occurrence of oil, paint, marine debris and ... fishing gear associated with seabirds at South Georgia. In this, the fifth year of standardised recording ... , a marked increase in the quantity of plastic debris associated with seabirds was evident; quantities ... of fishing gear remained within the levels of previous years for all species (although the number of ...
Meeting Document : SC-CAMLR-XVII/BG/10 : Autor(es): Delegation of the United Kingdom
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Krill length and age at maturity
Abstract: Data from several summer surveys to the Antarctic Peninsula region were analysed to ... calculate length and age at maturity for the Antarctic krill Euphausia superba. L50 values of 34.62 to 35.90 ... mm for female krill are the best estimates for the high spawning season. Males attain sexual maturity ... identical for krill. Comparisons with length at age data show that females mature in the third year of the ...
Meeting Document : WG-KRILL-93/40 : Autor(es): V. Siegel (Germany) and V. Loeb (USA)
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Australia’s observations and actions on IUU activities in 2015/16
Abstract: The 2015-16 season has seen further significant progress in the fight to combat Illegal ... , Unreported and Unregulated (IUU) fishing in the Southern Ocean. This paper outlines the action Australia has ... taken as part of its compliance program, and in cooperation with South East Asian countries through the ... ), with other CCAMLR members, and with other countries more broadly. The paper notes that international ...
Meeting Document : CCAMLR-XXXV/BG/20 : Autor(es): Delegation of Australia
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Proyecto de medida de conservación para un Área Marina Protegida de la Antártida Oriental
been under consideration by the Commission since 2012. This paper presents a revised conservation ... measure articulating changes, including feedback provided by members, which continue to improve the ... proposal. The paper provides greater clarity on the proposal by explaining how existing conservation ... measures create zones within the proposed EAMPA where different activities can occur, and includes ...
Meeting Document : CCAMLR-XXXVI/17 : Autor(es): Delegations of Australia, the European Union and its Member States
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CCAMLR observer manual questionnaires: summary results of preliminary analysis during its introductory period
Abstract: Preliminary analysis of data from the questionnaires of krill fishery behavior in ... CCAMLR observer manual was undertaken. The analysis revealed possible inconsistency in definitions of the ... event codes among different skippers. Some suggestions were made to improve the quality of questionnaire ... format to better understand the nature of the fishery. Author(s): S. Kawaguchi and S. Nicol (Australia ...
Meeting Document : WG-EMM-05/31 : Autor(es): S. Kawaguchi and S. Nicol (Australia)
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Population assessment of Antarctic toothfish in Subarea 48.4 using tag-recapture method
Abstract: The stock of Antarctic toothfish in the CCAMLR subarea 48.4 was estimated using as the ... Petersen method as 640 tonnes. Application of the harvest rate used for D. eleginoides in Subarea 48.3 (γ ... = 0.038) gives yields of 24 t for the Antarctic toothfish in the region vs. previous estimation of 30 ...
Meeting Document : WG-FSA-13/64 : Autor(es): V. Laptikhovsky (United Kingdom)
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Effects of orientation on acoustic scattering from Antarctic krill at 120 kHz
) were made at a frequency of 120 kHz in a chilled insulated tank at the Long Marine Laboratory in Santa ... Cruz, CA. Individual animals were suspended in front of the transducers, were only loosely constrained ... collected per animal. Orientation data were recorded on video. The acoustic data were analyzed and target ... strengths determined from each echo. A method was developed for estimating the three-dimensional orientation ...
Meeting Document : WG-EMM-99/42 : Autor(es): D.E. McGehee (USA), R.L. O’Driscoll (New Zealand) and L.V. Martin Traykovski (USA)