Результаты поиска

1. Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993

   years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ... ~ a c c a H CpeAHaX IIJIOTHOCTb 3a ~ ~ - J ' I ~ T H H ~ lIepHOn - 1 703 X 103 TOHH U 53,2 r/M2 ... noted that biomass estimates from surveys conducted prior to 1992 did not take into account the ... et al., 1991; Hewitt and Demer, 1991; SC-CAMLR, 1991), and suggested that a table of adjusted ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Автор(ы): Hewitt, R.P. and D.A. Demer

2. Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in the seasons 1986 to 1989

   involved in the survey with one vessel conducting commercial krill fishing. The whole survey area from the ... biomass. It was found that the above parameters are closely related to variability in oceanographic ... with one vessel conducting commercial krill fishing. The whole survey area from the coast to ... found that the above parameters are closely related to variability in oceanographic conditions and ... the commercial importance of krill aggregations located by the vessel to be evaluated. 2. MATERIALS ... commercial-sized trawl with a vertical opening of 42 to 44 m. Mesh size in the codend was 10 mm. A trawl ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 149–162 : Автор(ы): Dolzhenkov, V.N. and V.P.Timonin

3. Trawl selectivity for Champsocephalus gunnari

   area. The trawl bags tested were made of net webbing with 3.1 mm twine and 88.2 mm mesh size. Trawling ... calculated using the collected data. It was found that the selectivity factor for 88.2 mm mesh size was 2.81 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 69–75 : Автор(ы): Efanov, S.F., G.E. Bidenko and V.A. Boronin

4. On reproduction of Electrona carlsbergi (Tåning)

   of the Southern Ocean. From materials available it has been ascertained that E. carlsbergi spawns in ... . Maturation of ovaries is continuous, and spawning is serial. The spawning season is long and coincides with ... beginning of trophoplasmatic growth are .associated with the ripening of fish gonads. This period may be ... implies that there is a possibility of replenishment of spawned eggs by reserve oocytes which may be ... from 3.8° to 1O.3°C. In view of this variation in water temperature it may be hypothesized that the ... it has been ascertained that E. carlsbergi spawns in the notal waters. Maturation of females begins ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Автор(ы): Mazhirina, G.P.

5. Brief comments on the simulation study made by Professor Butterworth on krill fishing by an individual Japanese trawler

   . Finally, attention is drawn to the unrealistic behaviour of the simulation model with respect to the ... values used for the minimum catch rate per overall elapsed time. It is suggested that an improvement in ... collect PST (primary searching time), he suggested that TC/TFISHT/(PST +SST) might be useful, but its ... effectiveness is slightly less than that of the best index. We are, however, doubtful whether (PST +SST) can be ... , the demand for each product can be seen to change from year to year. We do, therefore, agree with him ... . This reinforces the argument that the krill distribution model needs to be improved. Collecting ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 347–350 : Автор(ы): Ichii, T. and Y. Endo

6. Statistical problems in krill stock hydroacoustic assessments

   method is most appropriate, this is made even more difficult by the fact that most survey methods assume ... to be not the absolute amount of biomass present in an area, but rather how it is distributed. The ... be in conflict with optimum distribution of effort for statistical sampling methods. Zooplankton ... be sampled multiple times. Given the fact that large surveys often take two weeks or more, this ... , therefore, recommend that surveys be conducted by those currently involved in such efforts and where ... difficult by the fact that most survey methods assume the population is fixed in space, relative to the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Автор(ы): Macaulay, M.C.

7. Use of indices of predator status and performance in CCAMLR fishery management

   seabird and seal predators,collected as part of the CCAMLR Ecosystem Monitoring Program (CEMP) could be ... factors potentially influencing or correlated with the changes. The relative merits and feasibilities of ... commercial fisheries. lt is crucial that this aim be achieved with the active support of those involved in ... predators be forthcoming as soon as possible and that these be as congruent as possible with the areas ... should be trying to do this and suggests some approaches that might facilitate constructive progress ... equally logical, however, to assert that commercial harvesting should only continue as long as it can be ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 353–365 : Автор(ы): Croxall, J.P.

8. Patagonian toothfish in international waters of the Southwest Indian Ocean (Statistical Area 51)

   made at depths between 360 and 1 950 m. D. eleginoides was present in all hauls, with catches varying ... , which defines the area of D. eleginoides toothfish distribution. The survey area would seem to be ... structures with those obtained in this study (81.20 cm, SD = 20.91) it can be seen that this last structure ... seems that the presence of this front as a dynamic process, in combination with the presence of ... with the islands and the mechanism would be ontogenetic migration to deeper waters, as described by ... (Figure 3). The goodness-of-fi t analysis of the expected ratio 1:1 indicated that, up to 85 cm TL, the ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 207–214 : Автор(ы): López Abellán, L.J

9. Preliminary report on biological observations and exploratory fishing data collected in the South Georgia area during the 1985/86 cruise of MT Carina

   mesh sizes (47 and 60 mm) were used with a bottom trawl of 32 m head rope. Catch data were collected in ... . Sampling tows, including some tows inside the 12 Nm zone, were made with 47 mm mesh size codends. Fifty six ... determinations. The total catch with 60 mm mesh size codends was 1305.4 tons with a mean CPUE of 1822 kg/hour. C ... of C. gunnari were found with modes of 18 and 28 cm. The length range of C. aceratus was 25–72 cm. P ... with the catches made in the 1984/85 season. Fishing operations at that time started earlier (in ... mm) were used with a bottom trawl of 32 m headrope. Catch data were collected "in 249 hauls using ... , including some tows inside the 12 Nm zone, were made with 47 mm mesh size codends. Fifty six fish samples ... age determinations. The total catch with 60 mm mesh size codends was 1305.4 tons with a mean CPUE of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Автор(ы): Kreft, K. and J. Szynaka

10. Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)

    that each element u may be classified as belonging to a definite category j in category type i. For ... are calculated with multiple linear regression after logarithmic transformation (1): T In Ut = In ... data since 1981/82 could be used. However, it should be noted that for the first two years of this ... ; Frolkina and Gasiukov, 1989). It is known that in order to use the method correctly it is necessary to ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Автор(ы): Gasiukov, P.S.

Страницы