Résultats de la recherche

1. Size compositions of males and females in the course of the life cycle of Euphausia superba

   during the reproductive cycle. Information on size composition by sex is considered to be vital for an ... , using samples from different years. The observed variations were related to stages of krill maturity ... composition by sex is considered to be vital for an understanding of krill population structure. It is ... dates on which the reproductive cycle stages occurred. For this reason an analysis of the stages of ... ) will help researchers to develop an optimal sampling strategy for the subsequent thorough analysis of ... ..... ... %30~ ! \:'" ,,-00, '"1 '\ 64-38S 47-00E if 16~ ~ 13.1.84 ,,/ \ 16.1.84 166 I ...:---'\. \! 20 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 3–16 : Auteur(s): Makarov, R.R.

2. The effects of monitoring procedures on Adélie penguins

   loss. There was a slight reduction in return rates of birds banded for more than one season, but no ... incubation period resulted in increased foraging trip durations and reduced breeding success. Attachment for ... breeding seasons. The implications of these findings for the CCAMLR Ecosystem Monitoring Program are ... , failure of timid birds to return to the colony, or an inability to breed every year due to the energetic ... studies have shown an 8 to 25% lower annual return rate for three species of pygoscelid penguins banded ... returned to the colony as two-year-olds (1993/94 summer). Ainley et al. (1983) reported that 30% of all ... . Given a similar return rate for two-year-olds at Bechervaise Island, we can expect to detect up to 23 ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Auteur(s): Clarke, J. and K. Kerry

3. 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 ... . For the abbreviations of brightness categories see Figure 1. g g Dec. 0 20 40 60 80 NI T DW N ... an unbroken sequence. For krill harvesting, midwater trawl nets with a mouth opening of 235.5–1 ... : 82–90. Ritz, D.A. 1994. Social aggregation in pelagic invertebrates. Adv. Mar. Biol., 30: 155–216 ... 40 60 80 NI T DW N M TW SR S M RN DA Y AF T SS T ET W DS K NI T 0 4 8 12 16 20 Jan. 0 ...

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

4. Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3

   surveys around South Georgia, Subarea 48.3 Abstract / Description:  Methods for calculating the horizontal ... presented. Regression equations for the estimation of horizontal opening from other, more easily measured ... variables, such as tow speed and trawl depth, are proposed. Biomass estimates for the major fish species ... , biomass, finfish, CCAMLR INTRODUCTION Surveys using bottom trawls have been used for over 20 years to ... of Trawl Geometry For a distance travelled over the ground g and an estimated horizontal opening h ... (17, 20 and 21) were logged every 30 seconds and the fourth (22) every 20 seconds. The hydrophone ... viable data from an individual tow (standard tow duration was 30 minutes), this tow was discarded ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Auteur(s): Pilling, G. and G. Parkes

5. Myctophids in the diet of Antarctic predators

   the present study is to review published data on the diet of various top predators (birds, seals ... review covers publications for the period since 1984-85 to the present. In total, over 50 publications ... PREDATORS E. Sabourenkov'" Abstract The aim of the present study is to review published data on the ... importance of myctophids in their diets. This review covers publications for the period since 1984-85 to the ... , 1991). The aim of the present study is to review published data on the diet of various top predators ... SC-CAMLRZ. This review covers publications for the period since the reviews of 1984 to 1985 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 335–368 : Auteur(s): Sabourenkov, E.

6. Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia

   the mackerel icefish (Champsocephalus gunnari) have been simulated for a period of 30 years. These ... constant levels of fishing mortality to the strength of the incoming year class. An increase of F, however ... 50% F 0.1 with F increasing three or five years after a good recruitment; pulse fishing at an ... partial recruitment. For the projections, recruitment was assumed to follow the historical pattern. Pulse ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Auteur(s): Köster, F.W. and K.-H. Kock

7. Modelling and decision making as part of the CCAMLR management regime

   horizons, time steps, constraints and data) were identified in an attempt to provide a blueprint for the ... environment essential for the effective management of the Antarctic marine ecosystem within the requirements ... formulation of a suitable decision-making protocol for management purposes. File:  16-Miller.pdf ... of CCAMLR Article II. Eight attributes (purpose, description, variables, driving forces, time ... data) were identified in an attempt to provide a blueprint for the development of suitable ... age and distributional structure are required for the model, although minimal age structure should ... , for example in order to rebuild some other predator (e.g. whales) population to an acceptable ... each model scenario, it enables us to design an appropriate holistic model suite. For example, an ...

   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.

8. Preliminary model of krill fishery behaviour in Subarea 48.1

   Elephant Islands in alternate years would result in an average yearly catch similar to that at present ... during alternate years. File:  06agnew-marin.pdf ... in Table 1 varied considerably, an approximate mean CV of 0.4 was used for all squares for these ... Livingston and Elephant Islands in alternate years would result in an average yearly catch similar to that ... management, crustacean, ecosystem management, penguins, CCAMLR INTRODUCTION Fishing for krill in the ... 48.1). Although only about 20% of the South Atlantic catch has been taken in Subarea 48.1, the catch ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 71–79 : Auteur(s): Agnew, D.J. and V.H. Marín

9. Results of fish stock assessment survey, South Georgia, December 1987 - January 1988

   for any subsampling on deck or in the laboratory, and was standardized to 30 minute tows. 21 3 ... . There is also an indication of decreasing size with increasing depth for this species, whereas all ... expects the data to have been corrected to a standard" PRINT tow of 30 min. at 3.5 knots, and for any ... "; TAB(60); "THE MEAN"; TAB(72); " OF THE MEAN"; TAB(90); "FOR TOTAL AREA"; TAB(110); "FOR TOTAL AREA ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 19-52 : Auteur(s): McKenna, Jr., J.E. and S.B. Saila

10. 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

    abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... LogL Two types of trawls were used for kriU sampling: an Isaacs-Kidd midwater trawl with a 6.0 sq. m ... previous period (1986 to 1988) and for an increase in krill biomass in the area. The data in Table 2 ... CO.llPY:>KeCTBa (65°30' - 68°00' lO.ill., 60-80° B . .ll') B 1988-1990 rr. (C6op npo6 TpaJIOM AH:3eKCa ... 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 : Auteur(s): Bibik, V.A. and V.N. Yakovlev

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