Résultats de la recherche

1. Interannual changes in body fat condition, stomach content mass and distribution of minke whales in Antarctic Areas IV and V

   the six years included in the study, two were categorized as years of poor body fat condition, and ... Abstract:  As an indicator of body fat condition, interannual variability in girth of minke whales ... . In Area V, in a year of high sea-ice extent, the krill-rich slope region in the western zone was ... whales along the ice-edger The Ross Sea zone was an area of low food supply throughout the study period ...

   Meeting Document : WG-EMM-97/18 : Auteur(s): Ichii, T., Nishiwaki, S., Tamura, T., Fujise, Y., Matsuoka , K.

2. Analysis of seamount-specific catch and tagging data in the Amundsen Sea, SSRU 88.2H

   liberty for less than 2 years, and that data from the Amundsen Sea slope SSRUs (88.2C–G) are included in ... the stock assessment along with 88.2H. Fishing has occurred on almost every seamount in every year ... recapture probability among seamounts was found. Single-season tag recapture rates exceeding 20% on some ... seamounts suggest relatively high local exploitation rates and the potential for localized depletion on some ...

   Meeting Document : WG-SAM-14/27 : Auteur(s): S.J. Parker (New Zealand)

3. Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996

   Antarctic Peninsula: 1979 to 1996 Abstract / Description:  Analysis of seasonal sea-ice cover of an area ... with features described by Stammerjohn and Smith (1996) for ice cover in the Bellingshausen Sea ... of sea-ice cover were integrated over time to produce an annual index of sea-ice cover in units of 10 ... four periods of extensive ice cover during the last 18 years. Variability in seasonal timing, areal ... were subsampled for an area of 40 X 50 pixels (1.25 X 10Qm2) centred on the northwestern side of the ... Ocean: an analysis for the west Antarctic Peninsula region. AMS Sixth Conference on Climate Variations ... use of the same data sources to derive an index of ice cover for a larger area, encompassing the ... curves of sea-ice cover were drawn from monthly estimates for each year (Figure 2). The area under the ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Auteur(s): Hewitt, R

4. Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)

   licensed participants. Catch levels for an exploratory fi shery are also managed at a precautionary level ... - ing under an exploratory permit in the Ross Sea (Subarea 88.1) during two summer seasons (January ... in the previous year, the remainder were largely partly full (15% held traces of food, 20% held ... the category Crustacea for that year. Live amphipods and isopods were also found in a few stomachs ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Auteur(s): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet

5. Phytoplankton: Trophic modelling of the Ross Sea

   an annual primary production on the Ross Sea shelf of 142 gC m-2 y-1 but this is for only the high ... 228 gCg-1Chl-a in the Ross Sea. DiTullio & Smith (1996) give an average value of 130 gCg-1Chl-a for ... considerations, the average phytoplankton biomass for the study region for the whole year was estimated to be ... variations in phytoplankton biomass for year to year. The variability may be of the order of -60% to +100 ...

   Document : Site Section: Publications

6. Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)

   (Subareas 48.2 and 48.3) Abstract / Description:  This paper provides an assessment of the impact of the ... commercial fleet on the krill population in different months during the 1987 to 1990 fishing seasons within ... % of the total catch. The calculations were based on haul-by-haul data from the Soviet fleet, using a ... on the krill population – on biomass and the density of krill aggregated in the fishing grounds – was ... Antarctic ecosystem. Krill are dominant primary consumers and constitute an important food source for ... 20-year fi shing history, the precautionary catch limit had never been approached. Furthermore, the ... pre-exploitation biomass for that year or about 3% of the total allowable catch (SC-CAMLR, 2001 ... further. This makes an even stronger case for the estimated removal intensity being of minor importance ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Auteur(s): Kasatkina, S.M. and V.F. Ivanova

7. Evaluation of Antarctic krill biomass and distribution off the South Orkney Islands 2011-2015

   has varied between years in particular due to ice. In order to allow for comparison of distribution ... series of krill density estimates from the 5 years of surveys. We follow the CCAMLR protocol for biomass ... coverage in all years except 2013. The results show that except from the year 2015, krill densities were ... Abstract:  Annual acoustic trawl surveys for krill monitoring have been carried out by the ...

   Meeting Document : WG-EMM-15/54 : Auteur(s): G. Skaret, B.A. Krafft, L. Calise (Norway), J. Watkins (UK), R. Pedersen and O.R. Godø (Norway)

8. Do krill and salps compete? Contrary evidence from the krill fisheries

   clear relationship was observed in the Elephant Island area. Possible reasons for these phenomena are ... / Description:  Salp by-catch and krill discolouration ('green' krill) caused by active feeding on ... krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... Recently, an hypothesis of competition for primary production between salps and krill has been proposed ... salp densities is shown in Figure 5. The estimates for each area were standardised to February and an ... be active feeding grounds for krill, which effectively filters particles larger than 20 pm (Meyer ... salps, however, indicates an effect on availability of phytoplankton to krill. In the Elephant Island ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Auteur(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

9. Diet composition of Dissostichus eleginoides in Subarea 48.3, Dr Eduardo Holmberg survey March/April 1996

   ; (%) methods. The samples consisted chiefly of immature specimens, with predominant length ranges of 30-70 cm ... depended on their local abundance. The large proportion of fish exhibiting stomachs full or close to ... fullness (together 62 %), suggests that feeding intensity of the species was high. Author(s):  Barrera-Oro ...

   Meeting Document : WG-FSA-96/29 : Auteur(s): Barrera-Oro, E., Marschoff, E., Casaux, R.

10. WG-KRILL-90

    haul T. Ichii (Japan) WG-KRILL-90/13 An evaluation of reduced target strength estimates reported for ... management measures for krill W.K. de la Mare (Australia) WG-KRILL-90/15 Comments on the calculation of the ... fishery for the Antarctic krill (Euphausia superba) off the Wilkes Land and Balleny Islands (with notes on ... (USSR) WG-KRILL-90/06 A standardised sampling procedure for commercial krill catches S. Nicol (Australia ...

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