Résultats de la recherche

1. Whales: Trophic modelling of the Ross Sea

   . Bradford-Grieve and S.M. Hanchet.  2010.  A balanced model of the food web of the Ross Sea, Antarctica ... methods to estimate the food requirements of cetaceans in the Ross Sea. At the outset, it is important to ... more intensively in the Antarctic in summer than at other times of the year. Reilly et al. (2004) and ... about 120 d/y and consume at a rate approximately 1/10 th of this at other times of the year. In this ... toothed whales is more intense in the summer in the Antarctic than in other areas at other times of the ...

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2. By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992

   Paper Title:  By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia ... an investigation of juvenile Antarctic fish caught during krill fishing by the FV Grigory Kovtun in ... : Champsocephalus gunnari and Nototheniops larseni. The frequency of occurrence of juvenile fish was 18.2% when all ... krill tows were included and 45.5% when only tows made in shelf waters were considered. The abundance of ... between them. At present, as our data on the by-catch of juvenile fish are very limited, it is difficult ... the waters outside the continental shelf. Future research should thus be directed at the study of ... the juvenile stock at age l+ and the rate of natural mortality concurrently with the total taken as ... of the nearshore fish populations at South Georgia. Br. Antarct. Surv. Bull., 59: 63-74. CCAMLR ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 129–142 : Auteur(s): Pakhomov, E.A. and S.A. Pankratov

3. Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast

   Paper Title:  Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae ... Chilean fisheries of the Patagonian toothfish, Dissostichus eleginoides is reviewed in order to study ... selectivity of different types and sizes of hooks used in longlines. Original data obtained during 1991 off ... the coast of Valdivia, South East Pacific, are also taken into consideration. The data show that ... hooks. In spite of the finding that differences in length composition of fish caught at the same ... , a proportion of females and their length is also increased in catches taken at greater depth. Due ... OF DISSOSTICHUS ELEGINOIDES (NOTOTHENIIDAE) OFF THE CHILEAN COAST Carlos A. Moreno* Abstract ... Existing information from technical publications on Chilean fisheries of the Patagonian toothfish ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 107–119 : Auteur(s): Moreno, C.A.

4. Cephalopods: Trophic modelling of the Ross Sea

   . Bradford-Grieve and S.M. Hanchet.  2010.  A balanced model of the food web of the Ross Sea, Antarctica ... into one compartment. Lack of adequate biomass, growth and feeding parameter data at the moment for ... similar to that of the Prydz Bay area at 68°S 75°E (Lu & Williams 1994). Lu & Williams (1994) found that ... . Galitheuthis glacialis: At least two size classes of Galitheuthis glacialis were also caught in Prydz Bay, but ... released one or two at a time. The numbers of eggs produced are known only for a few species. It is ...

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5. Seals: Trophic modelling of the Ross Sea

   . Bradford-Grieve and S.M. Hanchet.  2010.  A balanced model of the food web of the Ross Sea, Antarctica ... , relatively little is known of their biology (Kooyman 1981a). Mating and birth are likely to occur at sea or ... . Further research using stable isotope analysis of blood samples from seals not at the breeding colonies ... , and samples of muscle or other slower-turnover tissue of seals at the breeding colonies may be ... larger than males. Based on a small sample of measured animals, Ross seals reach at least 2.4 m and have ...

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6. Bacteria and detritus: Trophic modelling of the Ross Sea

   . Bradford-Grieve and S.M. Hanchet.  2010.  A balanced model of the food web of the Ross Sea, Antarctica ... sea-ice at that time of year is transferred into the water column. It is assumed that the living ... -parasite load), as well as parts of animals that died due to predation but were not consumed at the time ... ). Concentrations of bacteria were typically highest at the surface, decreasing to low levels at c. 300 m ... al. (1997) found that at some times only ~10% of bacteria cells were viable. 0 0.5 1 1.5 2 ...

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7. Benthos: Trophic modelling of the Ross Sea

   . Bradford-Grieve and S.M. Hanchet.  2010.  A balanced model of the food web of the Ross Sea, Antarctica ... and lack of calibration of numbers to biomass are at the base of difficulties in arriving at ... unevenly distributed at a range of spatial scales, depending on factors including substrate, water depth ... 85 ind m-2 occur at between 4–15 m (Stockton 1984). Typical dry weights of tissue of individuals are ... exceedingly high densities of the infaunal bivalve Laternula elliptica that have been found at Faraglione ...

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8. Location and intensity of the Soviet krill fishery in the Elephant Island area (South Shetland Islands), 1988/89

   Paper Title:  Location and intensity of the Soviet krill fishery in the Elephant Island area ... from 21 November 1988 to 25 March 1989. Although the total catch of the USSR in this season reached a ... low. In 1988/89 only one standard fishing vessel operated in the area over 40% of the time. The ... highest catch-per-unit-effort was observed in January 1989 (7.7 tonnes per hour of trawling on average ... computer database: • date, time and haul duration; • coordinates at start of haul; • vessel course and ... towing speed; • haul depth; and • catch per haul. At present the database consists of information on ... /days per five-day period at the end of February to March 1989. Such a level of fishing effort would ... caught in the nearshore zone of Subarea 48.1 at the current rate is comparable with the total amount of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 305–335 : Auteur(s): Sushin, V.A. and A.S. Myskov

9. Sea Ice Biota: Trophic modelling of the Ross Sea

   . Bradford-Grieve and S.M. Hanchet.  2010.  A balanced model of the food web of the Ross Sea, Antarctica ... lower surface of the ice, or in the skeletal ice layer at the water-ice interface; (7) among ... unconsolidated platelet ice at the bottom of the sea ice. Autotrophic biomass and other properties of the ice ... peaks in the chlorophyll a standing crop in sea ice in October–November at Syowa Station of 124 mg Chl ... at 34 mgC m-2 d-1 in November. The production values were then adjusted for the proportion of the ...

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10. Integration of CPUE data into assessments using the Generalised Yield Model

    Paper Title:  Integration of CPUE data into assessments using the Generalised Yield Model Abstract ... accorded high priority to the development of methods of integrating different indicators of stock status ... the use of importance sampling, for incorporating information on trends in standardised CPUEs into GYM ... assessments. The use of the method is illustrated using data for Patagonian toothfish (Dissostichus ... catches. Recruitme~~ts in future years and in determining the age composition of the population at the ... standardised CPUE trends at all, and crucially they generally indicate higher stock sizes at the end of the ... Constable was used successfully at the 2000 meeting of WG-FSA (SC-CAMLR, 2000). It should also be noted ... CCAMLR Science, Vo l . 8 (2001): 65-74 INTEGRATION OF ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Auteur(s): Kirkwood, G.P. and A.J. Constable

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