Résultats de la recherche
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Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)
1989/90. Since then the reported catch has been in the region of 3 000 to 4 000 tonnes, with the ... lines within a localised area. Two approaches have been used to solve this problem. The first ... ) industrial longline fisheries for D. e leg inoides and one (dataset B) is from a shallow-water artisanal ... depletion model was performed in two steps. Firstly, reported positions of vessels were plotted on axes ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Auteur(s): Parkes, G., C.A. Moreno, G. Pilling and Z. Young
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
to be independent to avoid interrelated estimates. For South Georgia, there is a 20-year time ... Pchantillons simultal~es des predateurs et des filets n'affichent qu'une difference de l%, ce qui met en ... , in order to consider the interaction between these two factors, measures of prey availability need ... present at South Georgia throughout the year, and samples of krill collected from their faeces can ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Auteur(s): Reid, K. and A.S. Brierley
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An iterative model to construct an age/length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
that age distribution derived from the model is not significantly different from the one obtained by ... Paper Title: An iterative model to construct an age/length key to assess the age composition of a ... estimation of age composition of catch requires that age/length data and random length frequency have been ... sampled from the same population. If such sampling is not possible the estimates of the age distribution ... that age distribution derived from the model is not significantly different from the one obtained by ... : Tableau 1: Figure 1: Figure 2: PHCYHOK 1: PHCYHOK 2: 20 List of Tables Age composition of D ... los 3 y 20 aiios y la moda estuvo en el grupo de edad 12. En general se aprecia que los machos son ... 14378 1,63 12631 1,44 19 1796 0,20 1760 0,20 20 1058 0,12 1378 0,16 Total 880772 100,00 879866 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 11–20 : Auteur(s): Robotham, V. H. and Z. Young U.
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Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels
every 40 m averaged 0.22 m s –1 to 2 m depth, which would be equal to, or exceeded by, lines with 5 kg ... from 0.68 m s –1 (4 kg rocks) to 1.31 m s –1 (8 kg steel) in the shallow depth ranges. Hydrodynamically ... over two days, on 9 and 10 June 2007, on the FV Tierra del Fuego near Isla Nueva (55°13.0'S 66°25.4'W ... fishing line), which took 30 s to pay out, to provide inde- pendence between the replicates. At the end ... fishing depth of 1 000 m, and mean sink rates 20 s after deployment, Spanish-system longlines with steel ... the linear phases of sink profiles taken 20 s after deployment and are de- rived for a water depth of ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Auteur(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon
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Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia
the mackerel icefish (Champsocephalus gunnari) have been simulated for a period of 30 years. These ... constant levels of fishing mortality to the strength of the incoming year class. An increase of F, however ... 50% F 0.1 with F increasing three or five years after a good recruitment; pulse fishing at an ... interval of three years with no fishing in between; and changes in net selectivity resulting in a shift in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Auteur(s): Köster, F.W. and K.-H. Kock
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Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)
measured and weighed and their effectiveness as predictors of fish length and fish mass determined. The two ... two measures, otolith length and otolith mass, provide good predictors of fish length, the latter ... 1 022 C. gunnari otoliths were obtained during five separate surveys and one season of the ... commercial fishery around South Georgia. Sampling periods, designated by the year in which the samples were ... regression model allowing for parallel lines for each year (F4.846 = 30.57, p < 0.001); including extra ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Auteur(s): Everson, I., B. Bendall and A. Murray
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Vertical migrations of mackerel icefish (Champsocephalus gunnari) on the South Georgia shelf
commercial concentrations of C. gunnari in years of high abundance of the species (1982/83, 1983/84 and 1986 ... may be used for clarification of survey techniques used in stock assessment. For a number of years ... concentrations were situated near the bottom or at 10 to 30 m above the bottom during daylight hours (09:00 to ... examined. Two peaks of feeding activity were observed. Feeding was most intensive (first peak) during the ... -18 18-20 20-22 22-24 Apri11983 BMRT Bottom 1.2 4.6 2.6 6.0 11.8 11.1 13.7 8.9 4.1 8.8 1.9 1.7 ... 7 6 5 4 3 2 1 0 2 4 6 8 10 12 14 16 18 20 22 24 Time of day, h Figure 1: Bottom ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 3–14 : Auteur(s): Frolkina, J.A. and V.I. Shlibanov
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Directed research. Antarctic Marine Living Resources (AMLR). A program development plan
coordination in planning and cooperative work between the two programs, where appropriate. The principal ... research vessel capable of operating in Antarctic waters for a period of 180 days each year. Note: The full ... , 1986. File: 20-USA.pdf ... . In the 50 years between 1930 and 1980 the populations of blue, fin, sei, and humpback whales are ... close coordination in planning ~nd cooperative work between the two programs, where appropriate. The ... of 180 days each year. Note The full text of this paper was published under the above title by ... ) developpera et mettra en vigueur. le Programme AMLR qui met l' accent sur la recherche dirigee entreprise ... fleets has already contributed to the overexploitation of Antarctic fish stocks. In the 50 years ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Auteur(s): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)
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Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
H3MepeHHR, MM 30-80 90-1 BHYTpeHHHH pa3Mep R~eH onpe~enRIDT nocne Ka~oro 3a~eT Horo TpaneHHR, He n03~Hee ... 3 13 23 4 14 24 5 15 25 6 16 26 7 17 27 8 18 28 9 19 29 10 20 30 - 114 - ___ .n ... rrpHlliHBaWT CHapY~H K Bepx- .HeH rrnaCTH UHnHHgpH~ecKOH ~aCTH MelliKa. KpOMKY h 1 , ~~HHa KOTOPOH Ha 30 ... KOTOpofi Ha 30% oonhIDe rrepe~Hefi KPOMKH BepxHefi rrnacTH, rrpHIDHBaIOT C paBHO- MepHO~ yca~Kofi. 3aTeM ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 99-121 : Auteur(s): VNIRO (USSR)
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Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set
l'Atlas de I'ocean Austral pour la zone: 50°-65° S et 20°-90° O. Cinq groupes de donnees du navire de ... febrero del Atlas del Oceano Austral para la region: 50°-65° S y 20°-90°0. Cinco agrupamientos de los ... no 50°-65° 10. ill. M 20°-90° 3.,ll., no ,llaHHbIM IO)l(HOOKeaHM4ecKoro aTJIaCa 3a .HHBapb M ... Discovery data of the 1920's and '30's also shows the invasion of Pacific deep water into the Bransfield ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 161-184 : Auteur(s): Gordon, A.L.