Search results
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
is shown. About 64% of the krill biomass was concentrated in krill swarms in the upper 80 m depth layer ... was concentrated in krill swarms in the upper 80 m depth layer within meander and eddy zones of the Weddell Sea (14 ... (m ) 40 T ot al tr aw l l en gt h al on g to pe na nt (m ) 18 2 T ra w l b ag le ng th ... (m ) 37 M es h si ze in tr aw l b ag (m m ) 6. 5 T ra w l s pe ed (k no ts ... 3 58 1. 5 2 76 3 43 3. 7 57 5 91 7. 4 5 18 1 13 0. 4 T yp es o f k ri ll ag gr ... eg at io n fo rm in g th e d en si ty s tr at um no n- ag gr eg at ed fo rm s sc ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Author(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky
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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
baited with arrow squid (Notodarus spp.) and jack mackerel (Trachurus spp.). One of the authors (J.M ... level in 260 stomachs (8.6% of stomachs containing food items) (Table 2). On occasion, more than one ... –33 cm mantle length), with remnants of small fi shes in one stomach and stones in others ... (Calhaem and Christoffel, 1969; Fuiman et al., 2002), while in deeper waters, away from the shore fast ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Author(s): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements
in an area away from the known high-density areas of the South Atlantic. As such it may be an underestimate ... for Area 48 would result from a biomass of krill in this area of only 12.9 million tonnes, one third ... million tonnes may be more realistic than one as high as 500 million tonnes. This is actually consistent ... in numerous areas. Acoustic surveys have been conducted regularly in some areas for nearly 20 years ... Paper Title: Estimates of circumpolar abundance of Antarctic krill based on recent acoustic ... historical information on the overall range of krill. The biomass estimates fall between 60 and 155 million ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Author(s): Nicol, S., A.J. Constable and T. Pauly
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Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile
, mean = 4) (Figure 2) and one group of pilot whales (n = 15) were recorded. Interactions with fi shing ... . This suggests that the presence of one species is not independent of the presence of the other (Chi- square ... the feasibility of the method to be confi rmed (Figure 4). Only one re-sighting was confi rmed and corresponded ... depredated by killer whales. Only one fatal entanglement of a sperm whale with the line was recorded during ... eleginoides) fishery operations were assessed in southern Chile during surveys with observers on board ... mode and median of the depredation rate was 0, the global impact of cetaceans on the fishing yield is ... depredation decreased to 0%; this could be the result of killer whales preferring to predate on sperm whales ... rather than on the fish caught on the line, as suggested by the response of sperm whales to the presence ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Author(s): Hucke-Gaete, R., C.A. Moreno and J. Arata
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By-catch of fish in the krill fishery
of Frolkina, we suggest that our class (iv) is probably age two or three, our size classes (ii) and (iii ... on dense krill swarms may have only a minor effect on the icefish. Approximately one haul in 20 ... ) are age 1 and our size class (i) is age O. C. gunnari occurred frequently in the catches of Subarea 48.3 ... in the southwest Atlantic. Antarctic Science, Vol. 3. FROLKINA, ZH.A. 1989. Methods of age determination ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 381–401 : Author(s): Everson, I., A. Neyelov and Y.B. Permitin
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
are categorised as being both biologically explicit and immediately available for implementation. However, two ... current fishing patterns. These two alternatives could be implemented immediately if the CCAMLR Member ... are categorised as being both biologically explicit and immediately available for implementation. However, two ... current fishing patterns. These two alternatives could be implemented immediately if the CCAMLR Member ... cambios en los regimenes de pesca existentes. 1. INTRODUCflON In November, 1991, the Commission ... The Historical Catch Alternative One of the initial proposals for setting a precautionary catch limit on krill ... are highly variable in time and space (see Hewitt and Demer, 1992 for one example). This is in direct ... model like the one described above would require. It is important to note, however, that models can ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Author(s): Watters, G. and R.P. Hewitt
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Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January-February 1987*
-fourths of the difference between our counts and previous ones is due to more complete coverage ... and previous ones is due to more complete coverage of available nesting habitat in 1987. For the same reason ... to have been about 40% overall increase in the chinstrap population in the last 20-30 years, about three ... in the chinstrap population in the last 20-30 years, about three-fourths of the difference between our counts ... -30 years, about three-fourths of the difference between our counts and previous ones is due to more ... meme raison, l'on a egalement pu constater que d'autres especes d'oiseaux de mer reproducteurs etaient ... a jugula ire ait augmente globalement d'a peu pres 40% au cours des dernieres 20-30 annees, environ les ... 20-30 anos, aproximadamente tres cuartas partes de la diferencia entre nuestros recuentos y los ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 449-451 : Author(s): Shuford, W.D. and L.B. Spear
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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes from the area ... with the abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... observee dans cette zone en 1990 est liee a l'abondance des classes d'age de 1986 et 1987 et de la ... target strength was calculated using the formula: TS = -97.2+20.01 LogL Two types of trawls were used ... to 1990. (Sampling by Isaacs-Kidd trawl). Year Length Class (mm) ~30.0 30.1 to 38. 0 38.1 to 46.0 46.1 ... WG-KRILL-90/17 THE STATUS OF KRILL (EUPHAUSIA SUPERBA ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Author(s): Bibik, V.A. and V.N. Yakovlev
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer
onHcaHHOH CbeMKH, B OCHOBHOM OrpaHHqHBaJIaCb npH6pe)l{HOH 30HOH. HKp5IHbIe caMKH 6bIJIH HCKJIIOqHTeJIbHO ... curve for krill (Siegel, 1987), length modes of 45 mm and 30 mm correspond approximately to ages ... 3+ and 1 + years respectively. The 49 mm length mode is possibly composed of mostly age 4+ and older, considering ... d'autres etudes indiquaient qu'avant debut fevrier 1991, la biomasse de krill avait ete plus faible qu'on ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Author(s): Ichii, T., H. Ishii and M. Naganobu
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Status of the FIBEX acoustic data from the West Atlantic
of survey area - one for each cruise (Figure 1); frequency distributions of Mean Volume Backscattering ... Strength (MVBS) - one for each cruise (Figure 2); and krill density distributions (gm-2) - one for each ... densities are mainly concentrated within one of the Scotia Sea survey areas. Following conversion ... these reservations, an alternative means of determining a 50 kHz TS estimate would be preferable. One alternative ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Author(s): Trathan, P.N. and I. Everson