Résultats de la recherche

1. Acquiring a ‘base datum of normality’ for a marine ecosystem: the Ross Sea, Antarctica

   Abstract:  The Ross Sea Shelf Ecosystem (RSShelfE) offers the last chance to understand ecological ... oceans the systems used for understanding ecological processes and fishery effects all have lacked ... researchers who currently investigate open-ocean systems. Herein, the importance of top-down forcing in ... pelagic and neritic marine ecosystems is reviewed with concrete evidence given for its existence in the ...

   Meeting Document : WG-EMM-04/20 : Auteur(s): D. Ainley (USA)

2. Relationship between Antarctic krill (Euphausia superba) variability and westerly fluctuations and ozone depletion in the Antarctic Peninsula area

   Abstract:  An assessment of the environmental processes influencing variability in the recruitment ... affects the Antarctic marine ecosystem as a whole. We have assessed variability in krill recruitment and ... ) determined from sea level pressure differences across the Drake Passage, sea ice cover, and ozone depletion ... . We found a significant positive correlation between krill recruitment in the Antarctic Peninsula area ...

   Meeting Document : WG-EMM-99/52 : Auteur(s): M. Naganobu, K. Kutsuwada, Y. Sasai and T. Taguchi (Japan) and V. Siegel (Germany)

3. Diet and foraging effort of Adélie penguins in relation to pack-ice conditions in the southern Ross Sea

   Abstract:  We investigated the diet and aspects of foraging effort among Adélie Penguins ... Pygoscelis adeliae breeding at three colonies on Ross Island, in the southwestern Ross Sea-- Capes Royds ... , Bird and Crozier-- during the chick provisioning period of three austral summers, 1994-95, 1995-96 and ... 1996-97. During the study period, pack-ice cover differed in waters offshore of these colonies, by ...

   Meeting Document : WG-EMM-98/15 : Auteur(s): D.G. Ainley (USA), P.R. Wilson, K.J. Barton (New Zealand), G. Ballard, N. Nur (USA) and B. Karl (New Zealand)

4. DEMOGRAPHIC STUDIES OF ANTARCTIC KRILL IN THE SOUTH ORKNEY ISLANDS AREA 2009, FIELDWORK AND PRELIMINARY RESULTS

   (Euphausia superba) fishery with the vessel “ Saga Sea ” in the South Orkney Islands area. We present ... preliminary results regarding krill demography from the sampling period in January-March, 2009. Total body ... % adult males and ~64% adult females (overall adult sex ratio: 1:4). The proportion of immature krill was ... similar throughout the study period; whereas the proportion of males decreased and the female proportion ...

   Meeting Document : WG-EMM-09/10 : Auteur(s): B.A. Krafft and G. Skaret (Norway)

5. An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)

   night using the Spanish double-line method with extra weights on the line and all deck-lights ... sampling method; the known number of coils laid during a night's setting operations provided the ... sampling frame, and the sampling units consisted of lengths of line between marked connecting lines ... target of 60 fish/day. The method was further developed to integrate different, and varying, levels of ...

   Meeting Document : WG-FSA-97/41 : Auteur(s): Ashford, J.R., Everson, I.

6. Preliminary studies on age and growth of Dissostichus eleginoides in the Ob-Lena Bank

   Abstract:  Preliminary studies on the age and growth of Dissostichus eleginoides sampled in the ... 2007/08 season in the Ob-Lena Bank were carried out. The ages of 214 of 3,013 fish sampled by Observers ... were estimated. The estimated ages ranged from 5 to 46 years for males and from 5 to 50 years for ... females. Five to eighteen years gave large contribution to the total age groups for both sexes. Females ...

   Meeting Document : WG-FSA-10/48 : Auteur(s): K. Taki, M. Kiyota and T. Ichii (Japan)

7. Assessment of the analysis of anomalous CPUE data from data-poor exploratory fisheries

   Abstract:  The article is concerned with discussion of the Analysis of anomalous CPUE data from ... data-poor exploratory fisheries (WG-FSA-12/07). Key points of the paper were presented and discussed ... during the Workshop for the Analysis of the Anomalous High CPUE by Korean Vessels in the CCAMLR Area ... high CPUE for Dissostichus spp. revealed by several vessels in the Subareas 58.4.1, 58.4.2 and 48.6. A ...

   Meeting Document : WG-SAM-13/16 : Auteur(s): V.A. Tatarnikov, A.F. Petrov and I.I. Gordeev (Russia)

8. Research plan for the exploratory longline fishery for Dissostichus spp. in 2014/15 in Division 58.4.3a

   Abstract:  In 2011/2012, the Saint André conducted its first exploratory fishery for Dissostichus ... spp. in division 58.4.3a. France notified its wish to continue this exploratory fishery over the ... account the remarks made during the WG-FSA 2013. The objective is to progress on modelling tools and to ... improve the estimation of current biomass. An update of the assessment of Dissostichus eleginoides using a ...

   Meeting Document : WG-SAM-14/17 : Auteur(s): Delegation of France

9. Towards the development of an assessment of stock abundance for Subarea 88.2 SSRUs 88.2C–G – a discussion paper

   Abstract:  This paper frames a discussion for improving the assessment of toothfish abundance for ... SSRUs 88.2C–G. We initially provide a characterisation of the fishery and a summary of available tagging ... 2 fish have been recaptured. It is likely that the lack of tag recaptures in this region has been ... caused primarily by the poor spatial overlap of released tagged fish with subsequent fishing effort. By ...

   Meeting Document : WG-SAM-14/28 : Auteur(s): S.M. Hanchet and S.J. Parker (New Zealand)

10. A review of tag-based stock assessments of the Antarctic toothfish Dissostichus mawsoni in Subarea 48.4

    Abstract:  The stock abundance of Antarctic toothfish in Subarea 48.4 is estimated using tag based ... mark-recapture analysis. During WG-FSA-14 the recommendation was made that the stock should move from ... the Petersen estimation method to the use of the Chapman bias corrected estimator; a correction ... specifically developed to reduce estimation bias in populations with low recaptures, a feature typical of the ...

    Meeting Document : WG-FSA-15/44 : Auteur(s): N. Walker, M. Soeffker, V. Laptikhovsky and T. Earl (United Kingdom)

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