Resultados de la búsqueda
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AN IMPACT ASSESSMENT FRAMEWORK FOR BOTTOM FISHING METHODS IN THE CCAMLR AREA
Abstract: This paper presents a methodological framework to estimate the likely cumulative impact ... utility of the standardized approach and provides a methodological template for systematic impact ... assessment in fisheries using bottom impacting methods, to inform mitigation efforts and as a necessary ... component of a full ecological risk assessment. Author(s): B.R. Sharp, S.J. Parker and N. Smith (New ...
Meeting Document : WG-SAM-09/P01 : Autor(es): B.R. Sharp, S.J. Parker and N. Smith (New Zealand)
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Krill density, biomass, proportional recruitment and recruitment index in the elephant island region during the period 1977 to 1997
indices for this time series. New survey results of the past two seasons indicate a very successful 1994 ... absolute recruitment). After a period of low krill density in the area for almost a decade, krill density ... and biomass have increased. Caution is expressed whether this observed increase represents a long-term ...
Meeting Document : WG-EMM-97/29 : Autor(es): Loeb, V., Siegel, V., Gröger, J.
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Spatial distribution of Champsocephalus gunnari in Subarea 48.3. Some implications for parameter estimation
Abstract: Results of the analysis of three consecutive cruises to subarea 48.3 are analyzed. A ... significant variance component associated with the formation of clusters of stations was found as well as a ... (as in the estimation of the variance of the mean density) might result in a gross underestimation of ... the variance. The spatial pattern of density across years might be applied to construct a model of ...
Meeting Document : WG-FSA-96/30 : Autor(es): Calcagno, J., Gonzalez, B., Marschoff, E.
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Preliminary study on reproduction in Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994
Abstract: A preliminary histological analysis on the ovarian development in Champsocephalus ... described for other species. A gonad maturation scale was elaborated and adapted to the macroscopic scale ... ovaries presented few atretic oocytes; in others a generalized regression was found. In the southwest ... portion of the South Georgia shelf, 50 % of the ovaries exhibited a pre-reproductive regression stage ...
Meeting Document : WG-FSA-94/28 : Autor(es): G.J. Macchi and E.R. Barrera-Oro (Argentina)
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Subgroup on Assessment Methods: Report to the Working Group on Fish Stock Assessment 2002
have highlighted a need to develop an integrated work plan to develop and validate assessment methods ... assessments undertaken during the time of a single meeting of WG-FSA. Issues related to the current procedures ... incorporating into assessments 2. a draft plan for assessments at WG-FSA this year, including reporting and ... archiving. 3. a proposed workplan for the future, including a timetable for work in the 2003 intersessional ...
Meeting Document : WG-FSA-02/80 : Autor(es): A.J. Constable (Subgroup Coordinator)
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Herpes virus antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
Abstract: This paper describes evidence of antibodies against a virus related with ... Alphaherpesvirinae sub-family, potentially a phocine herpesvirus (PhHV-1) that affect Antarctic Fur Seals ... (Arctocephalus gazella) from Cape Shirreff, Livingston Island, Antarctica. Body fluid samples of 54 A. gazella ... with the knowledge confirming the extended distribution range of herpesvirus, affecting a large number ...
Meeting Document : WG-EMM-01/59 : Autor(es): O. Blank, J.M. Montt, M. Celedón and D. Torres (Chile)
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Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation
orientation on echo spectral structure. A novel video analysis technique, applied to extract krill angle of ... echo spectra had a more erratic structure, with several closely spaced nulls of variable depth. The ... very similar to theoretically predicted patterns based on a distorted wave Born approximation (DWBA ... acoustic returns for angle of orientation by applying a newly developed Co variance Mean Variance ...
Meeting Document : WG-EMM-99/41 : Autor(es): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)
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An exploratory fishing expedition for Dissostichus eleginoides around the South Sandwich Islands, Antarctica
with a view to opening a new fishery under the auspices of the Commission for the Conservation of ... V, owned by the company Frioaysen S. A.. Fishing was by bottom longline, and data were collected ... following guidelines set out in the CCAMLR Scientific Observers Manual and in a memorandum of understanding ... between the Governments of Chile and the UK. A new fishery in Subarea 48.4 was found not be commercially ...
Meeting Document : SC-CAMLR-XII/BG/04 : Autor(es): Delegations of Chile and United Kingdom
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 2006/2007
Island, South Georgia (covering the period 1 October 2006 to 30 September 2007) a total of 365 items were ... collected. This represents a reduction by 33% on the 544 items recorded in 2005/06 and a decrease in mass of ... clearly identified as being the end of a multifilament line where a hook would have been attached. Five ...
Meeting Document : WG-FSA-08/24 : Autor(es): F. Le Bouard (UK)
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Diet composition of Champsocephalus gunnari in Subarea 48.3, Dr Eduardo Holmberg survey, February/ March 1994
the coefficient Q (%) showed a greater importance of T. gaudichaudii with respect to krill. It is ... possible that the inconsistencies found between the results obtained by both methods are due to a ... summer season; a fact that might be related with a significant change in surface temperature observed ... during the cruise. Author(s): E. Barrera-Oro, R. Casaux and A. Roux (Argentina) Title: Diet composition ...
Meeting Document : WG-FSA-94/27 : Autor(es): E. Barrera-Oro, R. Casaux and A. Roux (Argentina)