Résultats de la recherche

1. New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands

   part of the Kerguelen shelf during the 1989/90 to 1993/94 period provide new information on the stock ... the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... outer shelf. The three-year cycle observed previously seems to be related to the maturation stage of ... each current cohort and the relative abundance of spawners-at-age during each winter spawning period ... selected for the period 1989/90 to 1993/94. A mesh size of 80 mm was used in the codend of the trawls ... - - - ' , ' i " " " ' " " " ' I " " 0 10 20 30 Total length (cm) Figure 2: Quarterly LFDs for C. gunnari ... disappears from catches at age four to five years. A cohort is therefore only available to the fishery for ... a full three-year cycle (spring 2989/90 to spring 1992/93) and comprised 13 cruises. Samples were ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Auteur(s): Duhamel, G

2. Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database

   , unreported and unregulated (IUU) fishing. This paper presents an analysis of the distribution of albatrosses ... multiple data holders. The results highlight the importance of the Convention Area, particularly for ... importance for breeding albatrosses and petrels of regions north of the CCAMLR boundaries, particularly ... identified, especially relating to studies of nonbreeding distribution. These data will be essential for ... potential of these remote-tracking data for conservation applications, BirdLife International convened an ... an analysis of this database have been published in Tracking Ocean Wanderers (BirdLife ... added to the database since the report ‘Tracking Ocean Wanderers’ was published. Methods Over 90% of ... for the estimation of distribution during the breeding season for all 20 albatross, petrel and ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)

3. Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles

   with penguins looking up and around for a few seconds when the UAV was overhead. Similar symptoms of ... or piston engine UAVs. Plans for a systematic monitoring of UAV impact on wildlife, as well as ... preliminary guidelines for the next field season, were formulated. File:  Kidawa et al.pdf ... disturbance by UAVs   Resting Comfort Vigilance/anxiety Aggression 100 90 80 70 60 50 40 30 20 ... 40 km, max. flight time 30 minutes, flight speed 70–80 km/h, fuel – Li-Pol battery (electric engine ... . The best option is a 20–30 minute recording with the overflight around its midpoint. • Noise ... d Sk ua 200 180 160 140 120 100 80 60 40 20 0 M ea n tim e sp en t o n be ha vi ...

   Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Auteur(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój

4. Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system

   / Description:  An exchange system was established among Members of CCAMLR to compare age determinations for the ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... . gunnari from South Georgia and lowest for scales of adult N. rossii and N. gibberifrons and otoliths of P ... established among Members of CCAMLR to compare age determinations for the same species among different ... prepare them, scales are commonly used in most laboratories for routine age determination. Scales ... (Gerasimchook in SC-CAMLR-VII/8G/41). Sagittal otoliths were proved to be suitable for estimating age. Two ... different techniques are used for age determination. 200 (i) Otoliths are examined in glycerine via ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Auteur(s): Kock, K.-H.

5. Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz

   Receiving Sensitivity (SL + VRS) for both sounders was measured to within an estimated ± 0.5 dB by ... for an error of 0.5 dB in the estimation of SL + VRS, and for the same error in the equivalent beam ... factor and in the TVG correction, gives an upper limit of only 1.5 dB for error in each system and a ... kHz being raised by 12.5 dB, an increase of 17.7 fold, amply demonstrating the importance of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Auteur(s): Hampton, I.

6. A balanced model of the food web of the Ross Sea, Antarctica

   base. A survey of the available literature and both published and unpublished data provided an initial ... effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The model consolidates quantitative ... information on trophic links across all the major biota of the Ross Sea and tests for data consistency. The ... model has 38 trophic groups and is balanced in terms of annual flows of organic carbon in an average ... the base. A survey of the available literature and both published and unpublished data provided an ... . The model is an important step towards understand- ing the potential effects of the fishery for ... al., 2007). The aim of the present study is to model an average or typical year, rep- resentative of ... assumption that all parts of the ecosystem will be in balance in an average year. These balance equa- tions ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Auteur(s): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet

7. Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)

   for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... and 53 o-57 o 30´W) for proportional recruit and density indices. Proportional recruitment indices ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... one- and two-year-old krill (R 1 and R 2 respectively). Statistically significant fluctuations in ... the study area after 13 days, but was then trapped in an eddy system for another 30 days before ... representative for the age class. However, examples from the time series show that years of poor to almost ... analysis. Results are compared for one- and two-year-old ]for age group l + (R,) was ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Auteur(s): Siegel, V., W. de la Mare and V. Loeb

8. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... midwater trawls in the krill fishery indicates that the potential exists for this efficiency to be ... Rhomboid a=lOO (30) mm a=80(20)mm a=60 (18) mm 0.2 0.2 0.2 Hexagonal a=lOO (20) mm a=80 (14) mm a=60 ... assessing gross catch by integrating the methods mentioned above. Yu.V. Zimarev was responsible for ... 70 60 50 40 ~ 30 I» o ~ 20 g. f 10 \-l o 0,9 10,7 20,5 30,3 40,1 ~9.9 59,7 3 ... WG-KRILL-90/22 MIDWATER TRAWL CATCHABILITY IN RELATION ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Auteur(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

9. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... also useful for assessing the feasibility of candidate management policies or objectives, and ... process can be controlled through weight- ing. The area‐specific catches for the first year in the ... should occur in concert with the development of a state estimator mentioned above. An imme- diate ... to higher levels of uncertainty. MPE is an appropriate framework for select- ing an HCR by ... CCAMLR aims to develop a feedback manage- ment approach for the Antarctic krill fishery in the Scotia ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Auteur(s): Hill, S.L. and M. Cannon

10. Surveys of breeding penguins and other seabirds in the South Shetland Islands, Antarctica, January-February 1987*

    to have been about 40% overall increase in the chinstrap population in the last 20-30 years, about ... available nesting habitat in 1987. For the same reason, at least in part, other species of breeding seabirds ... were also found to be more abundant than previously reported. (* Published in: NOAA Technical ... Memorandum NMFS Antarctic Marine Living Resources Program (AMLR)) File:  20-Shuford-and-Spear.pdf ... a jugula ire ait augmente globalement d'a peu pres 40% au cours des dernieres 20-30 annees ... 20-30 anos, aproximadamente tres cuartas partes de la diferencia entre nuestros recuentos y los ... rro rrpeAblAYlI\l1M OlleHKaM. XOTH, KaK Ka)KeTCH, 3a rrOCJIeAHl1e 20-30 JIeT o611\ee KOJII1QeCTBO ... -30 years, about three-fourths of the difference between our counts and previous ones is due to more ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 449-451 : Auteur(s): Shuford, W.D. and L.B. Spear

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