Résultats de la recherche

1. Indices of prey availability near the Seal Island CEMP site: 1990 to 1996

   prey density, depth, distance from Seal Island, and persistence over time. Acoustic data from two AMLR ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... relative biomass of juvenile krill near Seal Island during the first survey of each year as compared to the ... biomass of post-spawning adults near Seal Island during the second survey of each year. It is hoped that ... (Figures 3 and 4). Two surveys were selected for each year, details of which are listed in Table 1. For ... Seal Island, and persistence over time. Acoustic data from two AMLR surveys each year were subsampled ... for each year. Designation 3 and 4 D D D D D D Dates 6 - 11 Jan, 21 - 26 Jan 21 - 31 ... prey availability relative to kriil predators greeding on Seal Island. shipboard computer for ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Auteur(s): Hewitt, R.P., G. Watters and D.A. Demer

2. Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data

   ) was examined for the Scotia Sea (South Shetland Islands (SS), South Orkney Islands (SO) and South ... an unbroken sequence. For krill harvesting, midwater trawl nets with a mouth opening of 235.5–1 ... . For the abbreviations of brightness categories see Figure 1. g g Dec. 0 20 40 60 80 NI T DW N ... for each tow in the logbooks from 1998 to 2003, to investigate the intensity of krill feeding on ... phase over the diurnal cycle (i.e. brightness categories) was examined for the Scotia Sea (South ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Auteur(s): Taki, K., T. Hayashi and M. Naganobu

3. Joint Polish/American hydroacoustic survey of Elephant Island and the vicinity of King George Island, 1988

   was 39k tonnes for a total of 299k tonnes in the combined areas. The estimated 200 kHz survey data ... bongo-net hauls (reduced speed from 6-8 knots to 3 knots for 45 min) spaced approximately every 30 n ... estimated from the 120 kHz data based on ratios established last year. The 200 kHz data will be presented ... kHz was also used. The 50 kHz envelope detected signal was recorded in FM mode on an instrument ... . One-min estimates then were recorded on magnetic disk files for further analyses. Estimates of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 357–377 : Auteur(s): Macaulay, M.C.

4. Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys

   surveys Abstract / Description:  The CCAMLR Ecosystem Monitoring Programme requires information on prey ... distribution to relate to changes in predator demography. The paper discusses the constraints imposed on such ... before or during the monitoring period. This places an immediate constraint on the timing and ... . The remaining parameters require information on the availability of krill in an undefined region ... prey locally but the logistics of mounting large scale surveys on an annual basis currently preclude ... comments on an early draft of this manuscript. - 385 - Table 1. Consideration of predator parameters ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Auteur(s): Everson, I.

5. Southern elephant seals and CCAMLR

   been recently confirmed for the Macquarie Island stock. The availability of food, competition with ... it is hoped that this will help to elucidate the reasons for the observed decline of M. leonina  in ... research findings of primarily South African (including some French and Australian results) studies on the ... feeding ground, not yet identified, exists and that this exerts some common influence on the species ... to lIes Kerguelen however, suggest a two-way directional migration for at least part of the ... recently confirmed for the Macquarie Island stock. The availability of food, competition with rapidly ... initiated and it is hoped that this will help to elucidate the reasons for the observed decline of M ... Heard, Marion and Prince Edward Islands, Iles Crozet and Amsterdam and st. Paul Islands. Two pelagic ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 465-473 : Auteur(s): Bester, M.N. and D.G.M. Miller

6. Interaction of marine mammals with the longline fishery around the Kerguelen Islands (Division 58.5.1) during the 1995/96 cruise

   longliners fishing for Patagonian toothfish (Dissostichus eleginoides) to the west of the Kerguelen Islands ... ). These seals are responsible for the loss of 0.75 % of toothfish during the longline sets in which ... particularly attractive for marine mammals because they provide an easily accessible source of food and the ... longline hauls (Table 1). Interactions were noticed for only 16 of the 30 hauls. During these hauls, fur ... two occasions, namely on 12 and 22 February 1996. From one to seven sperm whales (Physeter cafodon ... , France Abstract The only interaction observed between longliners fishing for Patagonian tootl~fish ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 171–174 : Auteur(s): Capdeville, D

7. Determination of Antarctic krill acoustic back-scattering cross-section

   obtained the dependence of the acoustic section of back-scattering of krill on its length at a frequency of ... -scattering for an individual krill for the given concentration : °0 . L~max I~max) ~n Lk2 -~-.- mln ... /Palm, = 20 103 • The echo signal level was determined with the help of an osciiograph which was ... Go is related quadratically to the length. For the target strength of an individual krill, the ... -scattering of an individual krill on its length. The regression equation takes the following expression ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Auteur(s): Protaschuk, V.A. and T.A. Lukashova

8. Areas of seabed within selected depth ranges in the South-West Atlantic and Antarctic Peninsula regions of the Southern Ocean

   Antarctic Peninsula regions of the Southern Ocean Abstract / Description:  Data were tabulated for FAO sub ... -areas: 48.1 (East), 48.1 (West), 48.2, 48.3, 48.4, 48.5 and 88. Total areas and sea areas were given for ... these categories. Areas estimated from admiralty charts were expressed as percentages for the following ... ;500m. Extra detailed information was presented for subdivisions 50, 51, and 52 of sub-area 48.3. File ... (km2 ) Subdivision N S E W 0-50 50-150 150-250 250-500 )500 Sea Total 62°00' 62°20' 59°30' 60°00 ... ' 2.2 8.7 44.6 44.6 956 957 2 62°00' 62°20' 58°30' 59°30' 91.6 2.9 3.7 1.8 1359 1934 3 62°00' 62°20 ... ' 57°30' 58°30' 27.6 6.4 12 54 1500 1934 4 62°20' 62°40' 57°30' 58°30' 0 0 0 100 1898 1898 5 62°20 ... ' 62°40' 58°30' 59°30' 9.5 2.7 3.2 84.5 1809 1898 6 62°20' 62°40' 59°30' 60°00' 63.3 8.7 9.7 18.4 772 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 49-73 : Auteur(s): Everson, I.

9. Feeding and food intake of Electrona carlsbergi (Tåning, 1932) Myctophidae

   . carlsbergi during the year in the waters to the south of the Antarctic Convergence is about 15 times fish ... / Description:  In summer and autumn Electrona carlsbergi feeds mainly on copepods. Daily food intake estimated ... , 1986). For an understanding of the role of E. carlsbergi in the ecosystems of the Southern Ocean ... fish body weight. The amount of food consumed by E. carlsbergi during the year in the waters to the ... various methods. 2. MAlERIALS AND METHODS Materials for studying feeding of E. carlsbergi were ... during the cruise of RV Artemida. A sample of at least 25 fish were taken from every catch for ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 411–416 : Auteur(s): Gerasimova, O.V.

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

    (Statistical Area 51) Abstract / Description:  Experimental fishing for Patagonian toothfish (Dissostichus ... crew on the fi shing vessel. Thanks also to L. Pshenichnov and an anonymous reviewer for their useful ... available on fi shing activities for Patagonian toothfi sh (Dissostichus eleginoides) in international ... compared with others obtained by López Abellán and González Jiménez (1999) on Meteor Bank (8°30'E 48°S ... comments on an earlier draft of this paper. References Burlenko, T.I. 2003. General physical and geo ...

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

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