Search results
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Results of a CCAMLR sponsored research survey to monitor abundance of subadult Antarctic toothfish in the southern Ross Sea, February 2013
Abstract: At its 2011 meeting, the Scientific Committee agreed that a time series of relative ... abundance from a well-designed survey could be a useful input into the Ross Sea stock assessment model. The ... subadult abundance which could be included as strata in future annual surveys. Author(s): S.J. Parker, S.M ...
Meeting Document : WG-SAM-13/32 : Author(s): S.J. Parker, S.M. Hanchet, S. Mormede, A. Dunn (New Zealand) and R. Sarralde (Spain)
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Proposal for extension of fishing season on the exploratory fishery for Dissostichus spp. in Statistical Subarea 48.6 in the 2004/05 season
Abstract: Based on the last year039;s record of the operation and the advice by WG-IMAF/WG-FSA ...
Meeting Document : WG-FSA-04/18 : Author(s): Delegation of Japan
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Ecosystem indicators: factors affecting the choice of predator performance indices for use in monitoring programmes
. Using indices of predator performance from four species of krill-eating predator together with ... relationships between the variability of indices and the biological processes that they measured; body mass ... parameters had the lowest variability (CV 50 %. Predator parameters that reflected processes occurring during ... the summer showed the closest relationship with krill abundance, especially those for species with ...
Meeting Document : WG-EMM-03/43 : Author(s): K. Reid (United Kingdom)
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Estimating uncertainty in local biomass estimates of toothfish in CCAMLR in Subareas 58.4 and 48.6 research blocks
differences in Antarctic toothfish biomass estimates using the two different methods suggests that the ... underlying assumptions currently made in one or both of the methods are likely to be invalid. We recommend ... that Working Group consider reviewing assumptions in the CPUE-by-seabed area and the Chapman biomass ... estimation methods at the Research Block scale and prioritise resolving issues in Research Blocks that show ...
Meeting Document : WG-SAM-17/12 : Author(s): L. Robinson, P. Burch and K. Reid
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Tests for anomalous years in the CCAMLR index series (draft)
obtained on the assumption that the series being considered consists of random values from a constant ... on the assumption that the series being considered consists of random values from a constant normal distribution ...
Meeting Document : WG-EMM-Stats-97/06 : Author(s): MacKenzie, D., Manly, B.F.
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Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean)
, with fish subsequently dispersing to deeper water around both the South Georgia and Shag Rocks shelves ... . Mean size of juvenile toothfish increased with depth of capture. Stomach contents analysis was ... conducted on 795 fish that contained food remains and revealed that juvenile toothfish are essentially ... piscivorous, with the diet dominated by notothenid fish. The yellow-finned notothen, Patagonotothen guntheri ...
Meeting Document : WG-FSA-07/P4 : Author(s): M.A. Collins, K.A. Ross, M. Belchier, K. Reid. (Mar. Biol., 152: 135–147 (2007)).
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Progress towards validation of ageing of Dissostichus eleginoides using otoliths
, fish have been treated with strontium to mark their otoliths for validation of subsequent age ... estimation. Otoliths from 69 fish that were at liberty for at least 350 days were eventually examined ... . Results indicate that current methods for ageing D. eleginoides are appropriate: the number of observed ... annuli on the otoliths after the strontium mark was consistent with the time at liberty of the fish after ...
Meeting Document : WG-FSA-04/67 : Author(s): K. Krusic-Goluband R. Williams (Australia)
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Congruent, decreasing trends of Gentoo Penguins and Crozet Shags at sub-Antarctic Marion Island suggest food limitation through common environmental forcing
-2000s were associated with improved breeding success. At a colony of Gentoo Penguins, breeding success ... was negatively correlated with the date of arrival of adults to breed. Gentoo Penguins and Crozet ... the compositions of their diets. Therefore, trends in their populations may be driven by food ... availability, which is likely to be influenced by benthic production around the island. In South Africa and ...
Meeting Document : WG-EMM-14/P09 Rev. 1 : Author(s): R.J.M. Crawford, B.M. Dyer, L. Upfold and A.B. Makhado
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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 ... between the Governments of Chile and the UK. A new fishery in Subarea 48.4 was found not be commercially ... viable due to an extremely low catch per unit of 5.37 g/hook. The low numbers of fish found may be been ... ) georgiana. Interactions between fishing operations and seabirds were also examined, with no incidental ...
Meeting Document : SC-CAMLR-XII/BG/04 : Author(s): Delegations of Chile and United Kingdom
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Research plan for exploratory fishing for toothfish (Dissostichus spp.) in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia
rules remain to be determined for these Divisions. Accordingly, a research plan has been developed under ... with the exception of responses to Agenda Item No. 3.12 of the Draft Report of the WG-SAM-15 ... (highlighted in blue). Standardised longline fishing, in conjunction with fish biological measurements, tagging ... and aging, will be used to develop a stock assessment for these divisions and inform the necessary ...
Meeting Document : WG-FSA-15/47 Rev. 1 : Author(s): Delegation of Australia