Résultats de la recherche

1. Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl

   /84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs ... according to the standard method for Isaacs-Kidd midwater trawls operating in the layer 0 to 100 m. Overall ... , 48.2 and 48.3) and for the whole study area. Survey results confirm current understanding of the ... characterised by a change in biomass of more than two orders of magnitude in different seasons, was observed in ... Evrika (20 January-9 March 1988) Figure 1: Station grid for krill sampling surveys. Krill ... " 50" 45" 40" 35" 30" Figure 4: Krill diskibution (g/ l 000 m3) in strata 0 to 100 m, 20 January to ... currents (relative to the 1 000 dbar), 20 January to 9 March 1988. 60" 55" 50" 45" 40" 35" 30" Figure 7 ... whether it was normal for a certain time of the year. The absence of krill aggregations from the South ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Auteur(s): Sushin, V.A. and K.E. Shulgovsky

2. Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies

   Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible ... , killer whales alone, and the two species co-occurring were observed on 32.6%, 18.6% and 23.4 ... whales were found to be responsible for the largest part of this loss (>75%), while sperm whales had a ... killer whales were detected between vessels suggesting the influence of operational factors on ... (49%) depredation had occurred in that year. These two factors could account for the lower estimated ... depredation rate for that year, Tixier et al. 190 which could be an artefact related to the method used ... fishing depth (500–2 000 m) which is not the case for sperm whales. For these two rea- sons, the focus ... included as a fixed effect and tested for its effect alone or in interaction with the other two variables ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Auteur(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet

3. The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach

   tuna fishing industry: an experimental approach Abstract / Description:  Experiments were conducted to ... . The addition of a 20 g lead sinker to a conventional 20 g tuna hook reduced the sink time of bait ... Paper Title:  The influence of bait quality on the sink rate of bait used in the Japanese longline ... determine the effects of bait size (large versus small) and bait condition (frozen versus thawed) on the ... the effect of added weight (sinkers) on the sink rates of bait. Lead sinkers weighing 10 g, 20 g, 30 ... experiment. Baits were grouped into two size classes and chosen at random from these classes. For each ... measured. IRESULTS Table 1 shows the results of an analysis of variance testing for differences in ... baits tested in each treatment, all Table 1: Summary of an analysis of variance testing for the effect ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Auteur(s): Brothers, N., A. Foster and G. Robertson

4. An assessment of the impact of krill fishery on penguins in the South Shetlands

   Paper Title:  An assessment of the impact of krill fishery on penguins in the South Shetlands ... an adverse impact on the local krill biomass, and hence on penguins, when catch levels are also taken ... Abstract / Description:  An assessment of the competition between the Japanese krill (Euphausia superba ... krill catch is very low in December while the catch rate for the following three months is roughly ... 20 or 30 X 30 n miles from recent surveys (1989/90 and 1990/91). The krill biomass for each of ... , krill catches were calculated for each square of 10 minutes latitude by 20 minutes longitude (=l0 X 10 ... respective colonies for chinstraps, 80 km for Adklies and 20 km for gentoos (Everson, 1987; Trivelpiece et ... TEMPORAL PATTERNS FOR KRILL BIOMASS Estimates of krill biomass are available for grid squares of 20 X ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Auteur(s): Ichii, T., M. Naganobu and T. Ogishima

5. Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1

   simulation testing.  Together, results from the two annual models and the seasonal model suggest that inter ... (either decreasing or increasing) in krill biomass have not been apparent over the past 30+ years ... -assessment framework for Antarctic krill (Euphausia superba) to assimilate multiple sources of survey data ... from three of the models provide a robust picture of changes in the krill population.  An annual model ...

   Meeting Document : WG-EMM-14/35 : Auteur(s): G.M. Watters, C.S. Reiss and D. Kinzey (USA)

6. An approach to feedback management (FBM) of the krill fishery based on routine acoustic data collection and intermittent land-based predator studies

   Norway, China and Chile Title:  An approach to feedback management (FBM) of the krill fishery based on ... renewed due the CCAMLR’s inability to establish an agreed, operational feedback management (FBM) approach ... strictly not in line with the CCAMLR ecosystem approach to management. FBM has been considered an ... alternative approach for decades, but still lacks a plan that can be made operational within realistic cost ...

   Meeting Document : SC-CAMLR-XXXVI/BG/20 : Auteur(s): Delegations of Norway, China and Chile

7. Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors

   : towards an improved understanding of off-peak census correction factors Abstract / Description:  Penguin ... . In this paper the authors present an analysis relating to both these challenges. Clutch initiation ... dates for four penguin breeding sites are examined (Cape Shirreff, Admiralty Bay, Humble Island and ... (Pygoscelis adeliae), gentoo (P. papua) and chinstrap (P. antarctica)). A statistical model for determining ... on which CIDs were recorded for each of the species at each site in each year. The y-axis ... correcting off-peak censuses, this model is applied to two census counts for which exact data on CID is ... two components. One is a model to estimate the date of peak egg laying for a given site in a given ... year, and the second is an estimate of the rate of nest attrition following the peak of egg laying ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece

8. INTERACTIONS OF PATAGONIAN TOOTHFISH FISHERIES WITH KILLER AND SPERM WHALES IN CROZET EXCLUSIVE ECONOMIC ZONE: AN ASSESSMENT OF DEPREDATION LEVELS AND INSIGHTS ON POSSIBLE MITIGATION SOLUTIONS

   will be tested on an experimental campaign which will take place in early 2010. Author(s):  P. Tixier ... . From 2003 to 2008, sperm whales alone, killer whales alone, and the two species co-occurring were ... year period we estimated a total loss of 1200 tons of Patagonian toothfish due to depredation which ... represents a financial loss of approximately 10 millions €. Killer whales were found to be responsible for ...

   Meeting Document : WG-IMAF-09/12 : Auteur(s): P. Tixier, N. Gasco, G. Duhamel and C. Guinet (France)

9. An updated assessment of unicorn icefish (Channichthys rhinoceratus) in Division 58.5.2, based on results from the 2015 random stratified trawl survey

   and yield for the area of Division 58.5.2 to the west of 79°20’ E using standard CCAMLR methods. Short ... term projections (20 year) indicate sustainable yield of 1663 t. Author(s):  D. Maschette and J. Dell ... provides both short (2 years) and long term (20 years) projections of unicorn icefish structure, abundance ... May 2015. Recent work which is presented here has allowed for many of the biological parameters of ...

   Meeting Document : WG-FSA-15/50 : Auteur(s): D. Maschette and J. Dell (Australia)

10. The effects of an experimental hake Merluccius capensis/paradoxus longline fishery on Procellariiform seabirds in South Africa - a preliminary investigation

    the world, concern was raised as to the effect an experimental Hake longline fishery would have on ... responsible for 1928 ± 1345 whitechinned petrel deaths a year in South African waters. Stepwise multiple ... , a great deal of mortality might be avoided. Nine great shearwaters and two pintado petrels were ... impaired. Author(s):  Barnes, K. Title:  The effects of an experimental hake Merluccius capensis/paradoxus ...

    Meeting Document : WG-FSA-95/21 : Auteur(s): Barnes, K.

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