Résultats de la recherche

1. Shedding new light on the life cycle of mackerel icefish in the Southern Ocean

   fishing and due to natural causes. Increases in populations of Antarctic fur seals at South Georgia and ... Atlantic and Indian Ocean sectors of the low-Antarctic region. Biological characteristics differ ... after they have spawned for 2 – 3 times. The number of eggs produced per gram of body weight is higher ... in the north. Stocks have declined in most parts of the distributional range due to the impact of ...

   Meeting Document : WG-EMM-03/4 : Auteur(s): K.-H. Kock (Germany) and I. Everson (United Kingdom)

2. Environmental response of upper trophic level predators reveals a system change in an Antarctic marine ecosystem

   environment have significant potential to affect populations of Antarctic krill Euphausia superba, a keystone ... foodweb species. To investigate this we analysed data on krill-eating predators from 1980-2000 at South ... Georgia. Indices of population size and reproductive performance showed declines in all species and an ... increase in the frequency of years of low reproductive output. Changes in the population structure of krill ...

   Meeting Document : WG-EMM-01/21 : Auteur(s): K. Reid and J.P. Croxall (United Kingdom)

3. Reproduction in the Antarctic icefish Champsocephalus gunnari and its implications for fisheries management in the Atlantic sector of the Southern Ocean

   been reviewed and discussed in the light of existing conservation measures. Length at first spawning is ... Abstract:  Available information on key reproductive parameters of Champsocephalus gunnari has ... the other South Atlantic fishing grounds. Spawning activities of Champsocephalus gunnari and those of ... other exploited species could be best protected by the establishment of permanent closed fishing season ...

   Meeting Document : SC-CAMLR-VIII/BG/16 : Auteur(s): Delegation of Federal Republic of Germany

4. Finfish research proposals for Subarea 48.6 by Koryo Maru 11 for 2012/13 (this is a revision of WG-SAM-12/12)

   limited to Statistical Subarea 48.6.  Preliminary assessments of Dissostichus spp. stocks in Subarea 48.6 ... north of 60°S (SSRUs 48.6A and 48.6G) and south of 60°S (SSRUs 48.6B, 48.6C, 48.6D and 48.6E) were ... conducted by OLRAC-SPS (2012) – tabled at WG-FSA-12 as a separate paper. The research plan presented here ... analysis.  The preliminary assessment indicates that the historic precautionary maximum catch limit of 200 ...

   Meeting Document : WG-FSA-12/30 : Auteur(s): C. Heiniken and R. Ball (South Africa)

5. INTERANNUAL SPATIAL VARIABILITY OF KRILL (EUPHAUSIA SUPERBA) INFLUENCES SEABIRD FORAGING BEHAVIOR NEAR ELEPHANT ISLAND, ANTARCTICA

   Abstract:  We investigate the influence of krill (principally Euphausia superba) patchiness on the ... foraging distributions of seabirds to understand how variation in krill influences patch dynamics between ... krill and birds. At sea surveys were conducted near Elephant Island, Antarctica for three years (2004 ... -transect surveys were used to map seabirds, and a combination of acoustic and net surveys was used to map ...

   Meeting Document : WG-EMM-08/P12 : Auteur(s): J.A. Santora, C.S. Reiss, A.M. Cossio and R.R. Veit

6. Sensitivity analysis identifies high influence sites for estimates of penguin krill consumption on the Antarctic Peninsula

   models of standing krill biomass and the design of a sustainable krill fishery for the Scotia Sea ... . Antarctic krill (Euphausia superba) is a significant component of diet for penguins breeding in this region ... in krill predation estimates. We use a comprehensive database of Antarctic penguin abundances to ... of pygoscelid penguins breeding in this region. We find that a high quality survey of Zavodovski ...

   Meeting Document : WG-EMM-12/P02 : Auteur(s): H.J. Lynch, N. Ratcliffe, J. Passmore, E. Foster and P. N. Trathan

7. Trends of the Dissostichus eleginoides stock using the sequential population analysis (SPA) model in Subarea 48.3: 1992-1996

   Abstract:  This paper presents a model of Sequential Population Analysis (SPA), based in catch at ... age data, for the evaluation of the state of the stock of Dissostichus eleginoides from the area 48.3 ... between 1992 to 1996. This, with the objective of knowing the results of management of this stock made ... for the non-lineal calculus process. The application of this model, tuned by auxiliary information of ...

   Meeting Document : SC-CAMLR-XV/BG/14 : Auteur(s): Delegation of Chile

8. Short note on time series of Drake Passage Oscillation Index (DPOI) and its influence on environmental variability

   , between Rio Gallegos, Argentina, and Base Esperanza, at the tip of the Antarctic Peninsula during 1982 ... Abstract:  An assessment of the environmental processes influencing variability in the recruitment ... and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ...

   Meeting Document : WG-EMM-07/14 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

9. Preliminary aspects of a simulation model to be used for evaluating the experimental crab fishery

   Abstract:  At the 1993 meeting of the Working Group on Fish Stock Assessment, members requested ... that work be undertaken to evaluate certain aspects of the experimental management strategy for the ... rate data from the 1991/92 crab fishery are used to motivate the construction of an ontogenetic ... fishery simulation is spatially explicit, and the dynamics of crab abundance are described on a daily ...

   Meeting Document : WG-FSA-94/26 : Auteur(s): G. Watters (USA)

10. Estimating the level of illegal fishing using simulated scaling methods on detected activity

    Abstract:  At its 2003 meeting, WG-FSA recommended that investigations be undertaken to determine ... , Annex 5, paragraph 3.18). The results of these simulations suggest that more information on IUU fleet ... the number of IUU fishing days, particularly for areas where patrolling may be relatively infrequent ... vessels between detecting IUU activity, thereby estimating the number of IUU fishing days, and deterring ...

    Meeting Document : WG-FSA-SAM-04/14 : Auteur(s): Ball, I.

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