Résultats de la recherche
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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
: (L = <10 years; M = 10–30 years; H = >30 years) Growth rate: (L = mature <10 years; M = mature 10–20 ... a longev- ity class of Low, 10–30 years as Medium, and more than 30 years as High. 111 ... years; H = mature >30 years or evidence for sporadic recruitment events) Fragility: (L = Flexible ... (>60 mm year–1) (Grigg, 1976) and live about 40 years. A black coral speci- men off the California ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Auteur(s): Parker, S.J. and D.A. Bowden
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Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001
conducting a krill fishery in the area during the entire year. The reliability of these forecasts could be ... Subarea 48.3, which includes satellite surveys with GOES-E, Meteosat and in situ monitoring, together with ... conducting a krill fi shery in the area during the entire year. The reliability of these forecasts could be ... the entire year. The reliability of forecasts for krill catches based on hydrological information ... ) from December to February was observed each year, there was a decrease in mean SST (both on monthly ... Georgia waters (Subarea 48.3) for December–February of 1989–1991 and 1999–2001. Year Month Cell 1 Cell ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Auteur(s): Vanyushin, G.P
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Commercial krill fisheries in the Antarctic, 1973 to 1988
split-years; a split-year being the twelve month period from 1 July in one year to 30 June in the next ... . The catch year is designated according to the second of the two split-years. Krill ST ATLANT data ... contain information on catch with respect to year, month, major gear type, vessel type and geographical ... . hours fished) are only available from 231 that year onwards. Fine-scale catch and effort data ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 229–281 : Auteur(s): Miller, D.G.M.
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Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements
able to narrow the estimates of production from 75- 1 350 million tonnes per year (a factor of 20) to ... conducted regularly in some areas for nearly 20 years, and there is now a good appreciation of the range ... abundance has been subject to considerable research over the last 20 years (Greene et al., 1998), and it ... -134.5 42.6 19.6 8 3 6 2 7 131 Time of Year February-March (1996) January-February (1981 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Auteur(s): Nicol, S., A.J. Constable and T. Pauly
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An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba
animal has little effect upon length-weight relationships. The use of categories of sex and maturity ... prediction. Surprisingly, the stage of the moult cycle of the animal has little effect upon length-weight ... Universitat Kiel, Dusternbrooker Weg 20, 2300 Kiel, Federal Republic of Germany. Les relations publiees des ... prediccion. Sorpendentemente, la etapa del ciclo de muda del animal tiene poco efecto sobre las ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Auteur(s): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle
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CCAMLR ecosystem monitoring and management: future work
scale during the early stages of the fi shery and to 0 1 2 3 0 1 2 3 D en si ty 0 10 20 30 ... the local population due to a high degree of site fi delity from one year to the next. For more ... of sampling within a year in order to determine the relationship between krill and predators for ... that year is dependent on the objec- tives being addressed (discussed below). The main issue to be ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Auteur(s): Constable, A.J
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Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season
NO.487 n-297 No.488 n-300 No.489 n=314 No.490 n=309 No.491 n=303 20 30 40 50 ... Feb. n=4696 Area H2 Early Mar. n=5319 Area H2 20 30 40 50 Body length (mm) 60 Fig. 9 ... off Africa. In recent years, the through-year activity of the trawlers has come to be incorporated ... those offshore areas, the concentrations may vary from year to year. 3.2 High Yielding Fishing Area ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Auteur(s): Ichii, T.
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Modelling and decision making as part of the CCAMLR management regime
of CCAMLR Article II. Eight attributes (purpose, description, variables, driving forces, time ... fishing. 5 years. 1 year unless there is a seasonal influence ·on the population. Data limited ... and prey biomass. Harvest of predators and prey. 5 years. 1 year unless there is a seasonal ... biomass. Prey biomasses and harvesting. 5 years. 1 year unless there is a seasonal influence on the ... year being adequate, or less than one year if seasonal influences need to be considered. The ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 295-322 : Auteur(s): Miller, D.G.M.
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Do krill and salps compete? Contrary evidence from the krill fisheries
krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... particles greater than 20 pm (Wright et al., 1996). Therefore, in our case, salps may have been excluded ... be active feeding grounds for krill, which effectively filters particles larger than 20 pm (Meyer ... , February 1982. Meeresforsch., 30: 220-239. Kawaguchi, S., T. Ichii and M. Naganobu. 1997. Catch per ... the catches was evident when both salps and krill were taken together. In the Livingston Island area ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Auteur(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare
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Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)
deposition typically takes more than a year (Everson et al., 1996), with the final maturation process ... leading to an enlarged ovary of about 20% of the fish total mass. Spawning occurs in the period July to ... language of bioassay - see Finney, 1978, Chapter 20) to cater for the situation where a proportion (propn ... ve r sus 1997) a n d / o r two-mon th periods, or separate year combined w i th two- month ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Auteur(s): Everson, I. and A.W. Murray