Résultats de la recherche
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
Meteor along the Antarctic Peninsula from 26 December 1989 to 14 January 1990. Results were compared with ... data of an identical survey with RV Polarstern in 1987/88. Seasonal variation between summer and winter ... Table 3, however, it is obvious that in 1987/88 the age group 3+ with a mean length of 44.7 mm ... of a species with a multi-year life-cycle can be obtained by summing up the results for single age ... miles2, which is a factor of 8.9 times. In general it can be concluded that the seasonal fluctuation in ... groups seem to be more realistic, so that the value of Kawakami and Doi (1979) seems to be too high at ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Auteur(s): Siegel, V.
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
target species. It is likely, therefore, that exploitation of the sub-Antarctic ommastrephid species ... Martialia hyadesi; will be attempted in the future. This squid is an important component of the diet of ... annual catches and frequent switches to exploit new target species. It is likely, therefore, that ... exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ... will be submitted at the International Symposium on Recent Advances in Cephalod Fishery Biology, Tokai ... , Madingley Road, Cambridge, CB3 OET, UK. 479 480 Pe3IOMe Bo BCeX patioHax MHpa, r~e Be~eTCSI ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Auteur(s): Rodhouse, P.G.
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Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1)
Stock Assessment (WG-FSA) noted that current estimates in the Antarctic Peninsula region may not be ... countries in the meantime. The Working Group recommended that these charts be submitted to CCAMLR (SC ... . Depth strata have been summed for the whole shelf area and are presented in Table 2 in comparison with ... the previous estimate (Kock, 1986). Results in Table 2 show that all estimates of areas of seabed ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 131–135 : Auteur(s): Kock, K.-H. and U. Harm
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On the power to detect changes using the standard methods for monitoring parameters of predatory species
of years or replicates], = desired probability that a difference will be found if it is as large as ... with v degrees of freedom and corresponding to probability 2(1-P). We also suggest that an ... , failure to detect a decrease in penguin reproductive success that actually occurred (type 2 error) may be ... error that one would be willing to accept, a conservative approach might suggest that it would be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Auteur(s): Boveng, P. and J.L. Bengtson
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Notothenia (P.) guntheri stock status and TAC estimation in the area of Shag Rocks (Subarea 48.3)
-1987/88 were used to analyse N. guntheri stock status. On the basis of these data using VPA method with ... consideration the fact that in the 1986/87 season the recruitment in the first age group was not abundance of N ... demonstrates that at the current level of fishing (1987/88) the size of the stock of N. guntheri will remain ... . guntheri stock status. On the basis of these data using V P A method with different adjustments stock ... correlation coefficients were the highest is the most preferable. Taking into consideration the fact that in ... that at the current level of fishing (1987/88) the size of the stock of N. guntheri will remain ... etait de 152 mille tonnes. Alors les valeurs de la T AC suivantes ont ete obtenues : ( a) L'intensite ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 53-68 : Auteur(s): Shust, K. and R. Borodin
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Distribution and relative abundance of juvenile icefish (Champsocephalus gunnari) from a trawl survey of the South Georgia shelf in June–July 1985
mile protected zone around South Georgia to the 500 m isobath were sampled with a specially designed ... obtain a more complete data set, it is recommended that future surveys should cover shallower water areas ... mile protected zone around South Georgia to the 500 m isobath were sampled with a specially designed ... obtain a more complete data set, it is recommended that future surveys should cover shallower water ... 28 zones (strata) with depth ranges of 100-200 m, 200-300 m and 300-500 m. Tow numbers in each ... ) was employed. This trawl is made of kapron fibre netting with 20-45 mm mesh size with an inside ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 55-63 : Auteur(s): Boronin, V.A., G.P. Zakharov and V.P. Shopov
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Problems of population age structure determination of Euphausia superba Dana using an example from the Antarctic Peninsula area and adjacent waters
correspond to age groups. It is shown that the size groups of krill are not a seasonal phenomenon, but ... structures of E. superba can be achieved through the comparison of results of studies of spatial and temporal ... shown that the size groups of krill are not a seasonal phenomenon, but correspond to a certain extent ... . superba can be achieved through the comparison of results of studies of spatial and temporal variability ... SToro MeTo~a K H3y~eHHro E.superba B Bo~ax, o~Baro ~HX ceBepO-3an~HOe nOoepe~be AHTapKTH~ecKorO ... - nH, ~TO paSMepHaH CTpYKTypa KpHnH (~Be OCHOEH@e rpynn@: Kpyn- HaH MonO~b H BspOCn@e pa~KH rpynn@ IY ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 227-270 : Auteur(s): Spiridonov, V.A.
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Target strengths of Antarctic krill (Euphausia superba)
and 120 kHz in a sheltered bay at South Georgia. The results indicate that the Target Strength values ... much inferior to that readily obtainable with standard spheres (Foote and MacLennan 1984, Robinson ... that quite small changes can be very significant in the context of echo formation (Greenlaw et al ... transducer beam patterns. The adopted procedure was that due to Simmonds (1984), although with a ... is to be admitted at once that the present analysis is incomplete for other data from the experiment ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Auteur(s): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote
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Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
abundance estimated from the 1951 survey (Croxall, 1986). It is possible that there could be more than one ... reason for this decrease. One reason could be the competition with fishing fleets since the onset of ... ) influence on the ecosystem. (This point will be dealt with in a future paper). The recovering of the ... be used in the popUlation estimation of females from these two breeding places. - 456 - The ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Auteur(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
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Results of fish larvae sampling by means of fine-meshed samplers attached to a bottom trawl
similar to those taken by samplers made using 12 mm net with 0.505 mm insets. The 12 mm net was, however ... mm mesh and one sampler with 0.505 mm mesh. The sampler made of 12 mm mesh could be fitted with an ... plankton and benthos in samples collected by the 12 mm net with the inset tended to be approximately half ... , one must not forget that the samplers could not be closed when passing through midwater layers. Some ... be nth os) collected using samplers with various mesh sizes (12 mm, 12/0.505 mm, 0.505 mm ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 69-86 : Auteur(s): Ślósarczyk, W. and I. Wójcik