Resultados de la búsqueda
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Preliminary results of investigations into the stock structure of Patagonian toothfish (Dissostichus eleginoides) around Macquarie Island
degree of interchange of Dissostichus eleginoides (Patagonian Toothfish) between two sites 40 nautical ... levels appropriate for population structure analysis, and two of these gave results that suggest samples ... from the two sites are not homogeneous at the 5% probability level. While the other three loci did not ... genetic analyses that interchange of fish between the two sites is very low. Of 469 recaptures at both ...
Meeting Document : WG-FSA-98/39 : Autor(es): A. Reilly, B. Ward and R. Williams (Australia)
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Consultation on Secretariat catch and effort monitoring: Secretariat proposals arising from the feedback from Members
Management issues. Finally, two projects are proposed for development in 2019, one to trial electronic ... reporting of catch data and one to develop a stable, documented warehouse of CCAMLR data. Author(s): CCAMLR ...
Meeting Document : CCAMLR-XXXVII/BG/22 : Autor(es): CCAMLR Secretariat
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Revised research longline fishing proposal for Dissostichus spp. in Subarea 48.2, second season
Modelling (WG-SAM) during the meeting held in Buenos Aires, Argentina, on 26 to 30 June 2017. Among the ... real scientific collaboration that could be implemented after 2018 season, which was welcomed by the ... is required to facilitate the operational and scientific collaboration going forward. Author(s ...
Meeting Document : WG-FSA-17/27 : Autor(es): Delegation of Chile
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
(PCA) provided good separation of these clusters using the first two axes (80 % of the total variance ... experience different conditions during transport to South Georgia and at either end of the island. Author(s ... types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ...
Meeting Document : WG-EMM-97/47 : Autor(es): Daly, H.I., Murray, A.W.A., Watkins, J.L.
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Conflict or co-existence? Foraging distribution and competition for prey between Adélie and chinstrap penguins
between the two species, however, in a year of normal resource availability (2001) there was no such ... the South Sandwich Islands to the Antarctic Peninsula. To investigate how these two species co-exist ... penguins and 24 chinstrap penguins were used to compare foraging distributions. In both years the diet of ... segregation. There was a significant difference in the foraging areas used by Adélie penguins between years ...
Meeting Document : WG-EMM-02/15 : Autor(es): A.S. Lynnes, K. Reid, J.P. Croxall and P.N. Trathan (United Kingdom)
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DEVELOPMENT OF RECOVERY PLANS FOR DEPLETED TOOTHFISH STOCKS IN THE INDIAN OCEAN SECTOR OF THE SOUTHERN OCEAN
years and then two years later. The surveys should have only low catches in order to not impede recovery ... trajectories indicate it is likely that it will be at least 5 years before it is sufficiently low risk to ... variability. After the two surveys, data should be analysed to determine how fast the stock is recovering and ... recovery strategy for Patagonian toothfish on Ob and Lena Banks. Author(s): D.C. Welsford, A.J. Constable ...
Meeting Document : WG-FSA-09/44 : Autor(es): D.C. Welsford, A.J. Constable and J.P. McKinlay (Australia)
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Evaluation on the performance of echosounder on a fishing vessel using maximum seabed backscattering
and 2018) collected at a relatively fixed location with bottom depth around 200 m were used to ... calibration. The largest inter-annual difference of the mean value of the maximum seabed backscattering (S v ... , respectively. However, ANOVA analysis indicated that there was no significant difference among years at both ... frequencies. Author(s): X. Wang, X. Yu and X. Zhao Title: Evaluation on the performance of echosounder on a ...
Meeting Document : SG-ASAM-18/06 : Autor(es): X. Wang, X. Yu and X. Zhao
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Estimates of abundance of Dissostichus eleginoides and Champsocephalus gunnari from the random stratified trawl survey in the waters surrounding Heard Island in Division 58.5.2 for 2019
year. Catches of skates were similar to those of the last three years, which have been higher than ... average. Invertebrate catch (including jellyfish) in the 2019 survey was lower than that of 2018, with ... the past 10 years. Biomass estimates for the managed by-catch species C. rhinoceratus and Macrourus ... last 4 years. The 2019 biomass estimates for each of the three Bathyraja spp. (skates) were the highest ...
Meeting Document : WG-FSA-2019/03 : Autor(es): G.B. Nowara, T.D. Lamb and P. Ziegler
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Natural fluctuations in the abundance of krill with due regard to global climate changes in the southern hemisphere: forecasting possibilities
years of development of El Niño off South America (Jordan, 1991). These facts may lead one to assume ... the South Ocean in recent years made it possible for scientists to establish a rather clear ... generations of krill were formed during the years when the winter position of the ice edge was south of the ... summer during such years of moderate winter in higher surface temperature. Salp occurred in mass ...
Meeting Document : WG-EMM-98/52 : Autor(es): K. Shust (Russia)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
model outputs of withholding from a stock assessment between one and eight years of age frequency and/or ... time as more years’ data becomes available. The 2009 stock assessment of Antarctic toothfish in the ... estimated by the models arising from withholding data was found to be highest in the earlier years of stock ... years, the change in estimated biomass arising from withholding data was much smaller, with values ...
Meeting Document : WG-SAM-11/17 : Autor(es): S. Mormede (New Zealand)