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Analysis of variability of krill size and fish by-catch in Japanese krill fishery based on scientific observer data
biological process error in the population dynamics from fishery process as observation error. In both krill ... length and bycatch fish number, the parameters estimated by MCMC hardly show difference among years, sub ... -temporal variability in size structure of krill population, which is presumably derived from large ... variability of recruitment causing difficulty in predicting krill population dynamics. Variances of observer ...
Meeting Document : WG-EMM-12/68 : Автор(ы): T. Okuda and M. Kiyota (Japan)
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Preliminary analyses of an ectoparasite Eubrachiella antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea
antarctica as a marker for stock discrimination of Antarctic toothfish in the Ross Sea. New Zealand Ministry ... fins and in the buccal cavity of 621 large D. mawsoni (mostly 120-150 cm). Up to five D. mawsoni per ... set were examined for parasites in Small Scale Research Units (SSRUs) 88.1C, 88.2E and 88.2F; and two ... fish per set in SSRUs 88.1H- 88.1J. Up to 15 E. antarctica, one from each of the first fifteen sets in ...
Meeting Document : WG-FSA-06/28 : Автор(ы): P.J. Smith, A. McKenzie and L. Tubbs (New Zealand)
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Monitoring marine debris and its impact on marine living resources in Antarctic waters
-related debris. During recent years surveys of beached marine debris have been conducted in accordance ... of Antarctic Marine Living Resources (CCAMLR) in response to a request from CEP-IV for information on ... actions taken by CCAMLR on marine debris from fishing vessels, especially in relation to compliance with ... level of marine debris and its impact on marine living resources in Antarctic waters. Long-term programs ...
Meeting Document : SC-CAMLR-XX/BG/16 : Автор(ы): Secretariat
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Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)
the fact that in the 1986/1987 season the recruitment in the first age group was not less than long ... -term mean (5947 million specimens), the abundance of N. guntheri in 1987/77 was 152 thousand tons. Then ... the following TAC values were obtained: a) Fishing intensity (F) in the predicted period is equal to ... the mean value of fishing mortality for the main commercially taken age groups (2- 4 years); b ...
Meeting Document : WG-FSA-88/33 : Автор(ы): R. Borodin and K. Shust (USSR)
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Fishery Report: Closed fishery for Dissostichus spp. in Divisions 58.4.4a and 58.4.4b
results reported in WG-FSA-10/48. Ages of 214 otoliths (of 3 013 fish sampled) ranged from 5 to 50 years ... management advice 8.1 Conservation measures 20. The exploratory fishery for Dissostichus spp. in ... (legal and IUU) and assumed the biomass in 2010 to be 20% of B0. An estimate of B0 was then calculated ... assumed the status at the end of the bulk of IUU fishing (in 2002) was 20% of B0. B0 was then back ...
Document : Site Section: Publications
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Preliminary assessment models of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... in a similar, though slightly higher, estimate of initial and current biomass as the 2005 base case ... previous years. Model sensitivities using tag-recapture data from all vessels, revised biological ... ‘all vessels’ tagging data resulted in a much more optimistic assessment, but was due to the increased ...
Meeting Document : WG-FSA-SAM-06/11 : Автор(ы): Dunn, A. & Hanchet, S.M.
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Spatio–temporal dynamics in maturation and spawning of Patagonian toothfish Dissostichus eleginoides on the subantarctic Kerguelen Plateau
eleginoides in the Heard Island and McDonald Islands (HIMI) fishery on the Kerguelen Plateau in the Indian ... Sector of the Southern Ocean based on gonads and otoliths collected between years 2004–2015, and using ... both sexes. However, the magnitude of this temporal variation in age-at-maturity varied between gear ... , D. Welsford, J. McIvor, B. Farmer and E.Woodcock Title: Spatio–temporal dynamics in maturation and ...
Meeting Document : WG-FSA-17/P04 : Автор(ы): P. Yates, P. Ziegler, D. Welsford, J. McIvor, B. Farmer and E.Woodcock
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Winter distribution of chinstrap penguins from two breeding sites in the South Shetland Islands of Antarctica
Islands until its signal was lost at 580 30’ S, 360 10’ W in late July, over 1300 km from its breeding ... eight chinstrap penguins known to breed at one of two colonies in the South Shetland Islands, Antarctic ... Peninsula region during the 2000 and 2004 austral winters. Six birds from a breeding site in Admiralty Bay ... that 4 of the birds instrumented in the 2000 winter, two from each colony, foraged largely on the shelf ...
Meeting Document : WG-EMM-06/17 : Автор(ы): W.Z. Trivelpiece, S. Buckelew, C. Reiss and S.G. Trivelpiece (USA)
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A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey
the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey Abstract / Description ... units (SSMUs), were estimated. Abundance in some of the individual SSMUs had not previously been ... estimated due to the sparseness of data in these regions. The MaxEnt formalism allows an objective choice of ... the error in the density estimates. The total biomass inferred for the survey area was 208 million ... 332 pixels, of which data are available for 9 586 pixels or just 0.56%), results were obtained in 30 ... QuAntified BAyesiAn MAxiMuM entropy estiMAte of AntArctic Krill ABundAnce Across the scotiA seA And in ... area, and within individual small-scale management units (SSMUs), were estimated. Abundance in some of ... the individual SSMUs had not previously been estimated due to the sparseness of data in these regions ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Автор(ы): Heywood, B.G., A.S. Brierley and S.F. Gull
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Attribtuion of acoustic echoes to squid in the south Atlantic
Paper Title: Attribtuion of acoustic echoes to squid in the south Atlantic Abstract / Description ... : During a research cruise of the British Antarctic Survey ship RRS James Clark Ross in February 1996, more ... than 2 000 individuals of the ommastrephid squid, Martialia hyadesi, were caught in a single haul made ... by a pelagic trawl near the Antarctic Polar Frontal Zone in CCAMLR Subarea 48.3. This paper describes ... net opening to 25-30 m in height. A depth sensor was attached to the net and this was used to ... was calibrated using three sizes of copper sphere suspended around 20 m below the ship's hull in ... 02:lO 25 12:lO 2 0 01:30 100 02:25 130 01:45 80 00:30 20 01:55 150 01:30 60 ... 00:45 20 02:OO 70 - 100 02:lO Mautialia hyallesi 0 2 310 30 28 7 36 0 50 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Автор(ы): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley
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