Resultados de la búsqueda
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DEVELOPMENT OF SPATIALLY EXPLICIT AGE-STRUCTURED POPULATION DYNAMICS OPERATING MODELS FOR ANTARCTIC TOOTHFISH IN THE ROSS SEA
operating models for Antarctic toothfish in the Ross Sea. The operating models consider both a coarse-scale ... spatial distribution parameters as an aid in evaluating the operating models. The models are implemented ... in the generalised Bayesian population dynamics model, the Spatial Population Model (SPM). The SPM ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ...
Meeting Document : WG-SAM-09/18 : Autor(es): A. Dunn, S. Rasmussen and S. Hanchet (New Zealand)
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An acoustic estimation of krill densities to the north of South Georgia in January 1994
Abstract: Dual frequency (38 and 120 kHz) acoustic surveys were carried out in two regions along ... the northern coast of South Georgia from RRS lames Clark Ross during January 1994. Difference in ... densities in both regions were extremely low in comparison with previously published density estimates, and ... provide further evidence of an extreme krill paucity around South Georgia in the 1993/4 season. Author(s ...
Meeting Document : WG-EMM-95/74 : Autor(es): Watkins, J.L., Brierley, A.S.
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Assessment of the status of the Champsocephalus gunnari stock in the South Georgia area for the 1990/91 season and TAC calculations for the 1991/92 season
. Values of catch/effort by age group and by year of fishing were used in conjunction with abundance ... Abstract: An adaptive approach was used to assess the Champsocephalus. gunnari stock in Area 48.3 ... indices from trawl surveys in tuning the VPA. The C. gunnari stock at the start of the 1990/91 season is ... estimated at 184 thousand tonnes. Calculation of TAC was carded out keeping in mind the change to the ...
Meeting Document : WG-FSA-91/27 : Autor(es): P.S. Gasiukov (USSR)
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Summary of notifications for krill fisheries in 2010/11
Abstract: Seven Members submitted notifications for a total 15 vessels for krill fisheries in ... Subareas 48.1, 48.2, 48.3 and 48.4 and Divisions 58.4.1 and 58.4.2 in 2010/11. There was no notification ... submitted for exploratory fisheries for krill in 2010/11. The total notified, expected level of catch of ... krill in 2010/11 is 410000 tonnes. Author(s): Secretariat Title: Summary of notifications for krill ...
Meeting Document : WG-EMM-10/06 : Autor(es): Secretariat
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Hook loss in CCAMLR exploratory fisheries
lines requires an estimate of the number of lost hooks that are attached to sections of line. In 2011 ... attached to sections of lines. In 2012 15 of the 26 vessel/fishery reports provided non-zero data with an ... estimated total of 313548 hooks lost attached to sections of line. In exploratory fisheries, particularly ... those in data-poor regions, the requirement and appropriate mechanism for reporting these data may need ...
Meeting Document : WG-FSA-12/65 : Autor(es): Secretariat
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Further development of coarse- and medium-scale spatially explicit population dynamics operating models for Antarctic toothfish in the Ross Sea region
operating models for Antarctic toothfish in the Ross Sea. The operating models consider both a coarse-scale ... in the generalised Bayesian population dynamics model, the Spatial Population Model (SPM). The SPM ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ... , suggesting that younger fish were found predominantly in the southern shelf areas, mature fish on the slope ...
Meeting Document : WG-FSA-12/44 : Autor(es): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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SO-AntEco: Contributing information and scientific advice on benthic biodiversity in the South Orkney Islands (Domain 1) region
Abstract: SO-AntEco was a British Antarctic Survey (BAS) led expedition undertaken in conjunction ... . The expedition took place on board the BAS research ship RRS James Clark Ross in early 2016. The focus ... the South Orkney Islands, and the biodiversity within those habitats, in relation to the geomorphic ... deposit feeders. Substantial differences in the abundance of VME taxa were found between two sampling ...
Meeting Document : WG-EMM-17/37 : Autor(es): M.J. Brasier, S.M. Grant, P.N. Trathan, L. Allcock, O.S. Ashford, H. Blagbrough, A. Brandt, B. Danis, R. Downey, M. Eléaume, P. Enderlein, C. Ghiglione, O. Hogg, K. Linse, M. Mackenzie, C. Moreau, L. Robinson, E. Rodríguez, V. Spiridonov, A. Tate, M. Taylor, C. Waller, H. Wiklund and H.J. Griffiths
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Estimates of krill biomass with commercial significance in small-scale management units applying geostatistics techniques
and SGW which are located in ecologically crucial areas affecting land-based predators around South ... Russian survey 2002 were used. Processing of the acoustic survey data in 2000-2002 was made applying ... and its fishable part in each SSMU. The relationship between the biomass available to fishery and the ... total biomass may vary by SSMUs, e.g. in SGE this relationship based on the two surveys data constituted ...
Meeting Document : WG-EMM-06/36 : Autor(es): S.M. Kasatkina and P.S. Gasyukov (Russia)
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Size at maturity and histological procedures explored to determine spawning activity of female Dissostichus mawsoni from samples collected from the Ross Sea in January 2004, December 2004 and January 2005
the 2003/04 and 2004/05 commercial fishing seasons in the Ross Sea to improve estimates of size of ... development visible in histological sections of the 2003/04 samples. Using this methodology, it is ... size at maturity. The calculated Lm50 of 113.0 cm was very close to the value of 115.2 cm estimated in ... spawning activity that may also be useful in ascertaining the maturity ogive of D. mawsoni in the previous ...
Meeting Document : WG-FSA-05/63 : Autor(es): M.E. Livingston and P. Grimes (New Zealand)
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Preliminary report on IWC-SO GLOBEC collaborative research in the western Antarctic Peninsula study area, March–June 2001
Abstract: The first three cruises in the 'year round' Southern Ocean GLOBEC series for ... participated in all three cruises (Gould LMG 01-03 USA mooring cruise, Polarstern AntXVIII5b ship and ... passive acoustic team. The most frequently recorded and abundant baleen whale species in the study area ... (ie. dense aggregations in deep pools or holes) was made on these surveys. This indicates that baleen ...
Meeting Document : SC-CAMLR-XX/BG/29 : Autor(es): Observer (IWC)