Результаты поиска

1. Estimating krill recruitment and its variability

   and above) of 0.339 with a standard deviation (SD) of 0.100. The corresponding result for recruitment ... nine surveys is 0.552 with a standard deviation of 0.074. A number of the assumptions needed for ... number of krill aged one year to the number of krill aged one year and above) of 0.339 with a standard ... two-year-old krill to the number aged two and above) from nine surveys is 0.552 with a standard ... . The problem with krill is that there is no reliable method of direct age determination. One indirect ... with the length frequency distributions of each age class. It is clear that there is little prospect ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Автор(ы): de la Mare, W.K

2. Fish and invertebrate by-catch from Australian fisheries for D. eleginoides and C. gunnari in Division 58.5.2

   with distances travelled ranging between 1 and 7 nautical miles. The time at liberty varied between 208 ... and 823 days, with most skates at liberty for approximately one year. Estimates of growth were very ... low, with average increments of 12 mm per year in total length, 17 mm per year in disk width and 0.1 ...

   Meeting Document : WG-FSA-03/73 : Автор(ы): E.M. van Wijk and R. Williams (Australia)

3. Uncertainty in echosounder calibrations

   , 0.3, and 0.1 dB with standard deviations of 0.0, 0.3, and 0.2 dB, respectively. The operative measure ... (derived by peak intensities), differed from the theoretical values by-0.2, O.4, and 0.2 dB with standard ... are consistent with predictions (Blue, 1984), and prior experimental results (Demer and Hewitt, 1993 ...

   Meeting Document : WG-EMM-96/40 : Автор(ы): Soule, M.A., Demer, D.A.

4. Characterisation of the Antarctic polar frontal zone to the north of South Georgia in summer 1994

   first. Associated with the PF was a narrow, high-speed flow embedded in broader, slower moving regions ... estimates for other regions of the PF. Comparisons with output from recent oceanographic models were found ... to be consistent with the physical observations. A second examination of the region after a period of ...

   Meeting Document : WG-EMM-97/40 : Автор(ы): Brandon, M.A., Trathan, P.N., Murphy, E.J.

5. Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters

   commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ... revealed average levels of genetic variability, with the proportion of polymorphic loci, P = 0.278, mean ... requires analysis of larger sample sizes with more comprehensive electrophoretic screening. Genetic data ...

   Meeting Document : WG-FSA-90/10 : Автор(ы): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)

6. Responding to climate change: Adélie penguins confront astronomical and ocean boundaries

   averaged 12,760 km, with the longest being 17,600 km, and were in part facilitated by pack ice movement ... pack, and used areas with high sea-ice concentration, ranging from 75-85%, about 500 km inward from the ... ice edge. They also used locations where there was some twilight (2-7 hr with sun < 6° below ...

   Meeting Document : WG-EMM-10/P11 : Автор(ы): G. Ballard, V. Toniolo, D.G. Ainley, C.L. Parkinson, K.R. Arrigo and P.N. Trathan

7. Reports on abundance and biological information on toothfish in Divisions 58.4.4a and 58.4.4b by Shinsei Maru No. 3 in 2011/12 season

   SSRU in 2010/11. A total of 172 individuals of toothfish with good physical condition and single-hooked ... of size between the fish released with tag and that of overall catch was high (θ=81 %). Fish with ...

   Meeting Document : WG-SAM-12/16 : Автор(ы): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)

8. Revised research plan for toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2012/13

   2011/12 fishing season with the aims of providing the data required for assessments of the population ... three years with an annual research catch of approximately 50 tonnes. The estimate (976 tonnes) using ... normal trotline system, we would increase the comparison tests with trotline and Spanish line systems. We ...

   Meeting Document : WG-FSA-12/58 Rev. 1 : Автор(ы): Delegation of Japan

9. A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments

   (GAMM) with cubic smoothing splines fitted to P for each combination of the covariates (i.e. gear type ... . Additional error terms included a random spatial block term and interactions of spatial blocks with other ... covariates. Graphical presentation of fitted splines along with standard error of difference bounds were used ...

   Meeting Document : WG-SAM-13/18 : Автор(ы): S. Candy, P. Ziegler and D. Welsford (Australia)

10. Mitigation of Macrourus by-catch in research block 58.4.1_6 and estimation of Macrourus biomass and sustainable catch in Divisions 58.4.1 and 58.4.2

    with high Macrourus spp. by-catch rates in depths between 750 m and 1150 m. To mitigate Macrourus spp ... vessels to fish within the research grid with structured fishing. The latter option is similar to research ... effort is distributed across a range of depth strata (<1000, 1001–1500, 1501–2000 m) with at least 5 ...

    Meeting Document : WG-FSA-17/23 : Автор(ы): D. Maschette, P. Burch, P. Yates and P. Ziegler

Страницы