Résultats de la recherche
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Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill
Abstract: Quickly studied and quantified were sources of uncertainty in the CCAMLR 2000 ... acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration was ... evaluated in relation to the effects of variant water temperature and salinity on sound speed, sound ... and orientations. The uncertainty in species delineation was also investigated through the same ...
Meeting Document : WG-EMM-00/49 : Auteur(s): D.A. Demer (USA)
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Do the males of Dissostichus eleginoides grow faster, or only mature before females?
Abstract: Maturity data information obtained by the scientific observers on board the ships Argos ... Helena and Cisne Verde during August of 1997-and utilized by the WG-FSA-97 to build the maturity ogives ... - were age transformed applying the age-size relationship obtained from the specific equations for each ... sex in samples coming from South Georgia Islands. The results show that the differences are due to ...
Meeting Document : WG-FSA-98/16 Rev. 1 : Auteur(s): C.A. Moreno (Chile)
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Biodiversity of the benthos off Kerguelen Islands: overview and perspectives
Abstract: The Kerguelen Plateau possesses a very diverse benthic fauna. Over the years, the ... number of species recorded from the Kerguelen has substantially increased. From 172 species reported by ... Arnaud (1974), the total number of species has increased dramatically to 735 (Jouventin et al., 1996) and ... then to 960 in the present study. This area is particularly vulnerable to human activities and global ...
Meeting Document : WS-MPA-11/P03 : Auteur(s): N. Améziane, M. Eléaume, L.G. Hemery, F. Monniot, A. Hemery, M. Hautecoeur and A. Dettaï
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Recommendation for an explicit limit reference point for the mackerel icefish (Champsocephalus gunnari) fishery in CCAMLR Statistical Division 58.5.2
Abstract: Large fluctuations in abundance are a persistent feature of the populations of mackerel ... icefish (Champsocephalus gunnari) in the waters adjacent to Heard Island and the McDonald Islands in ... CCAMLR Statistical Division 58.5.2. The current decision rules for setting catch limits for icefish ... . Australia recommends the development of a limit reference point, such that the commercial catch limit for ...
Meeting Document : WG-FSA-11/34 : Auteur(s): Delegation of Australia
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
Abstract: Ten years of recent finescale haul-by-haul krill data were used to characterize the ... behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... 10 t per haul, and the travel distance decreased as the catch level increased; this pattern was most ... longer distances moved between hauls in Area 48.1 compared to 48.2 and 48.3 reflecting the large number ...
Meeting Document : WG-EMM-09/P05 : Auteur(s): S. Kawaguchi and S.G. Candy
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Monitoring results of marine debris at Cape Shirreff, Livingston Island during the 1995/96 Antarctic season
at the site have increased from 0.65 articles/m2 in 1993/94 to 1.02 in 1994/95, and 1.52 in 1995/96 ... Abstract: The principal results of the monitoring survey on marine debris carried out at Cape ... Shirreff, Livingston Island, during the Antarctic season 1995/96 is given. During the present survey a ... , the plastic was the principal item (4 015 pieces) with a 94.45%; followed by glass (147 pieces), 3.46 ...
Meeting Document : CCAMLR-XV/BG/27 : Auteur(s): Delegation of Chile
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
Abstract: The Patagonian toothfish, Dissostichus eleginoides, has been reported as prey of ... Elephant seals in the Heard Island region. A question was raised at SC-CAMLR-XV concerning what affect the ... fishery for toothfish in Division 58.5.2 might have on the abundance of the age classes of toothfish ... preyed on by these seals. This paper provides an updated analysis of the age of toothfish taken by ...
Meeting Document : WG-EMM-97/42 : Auteur(s): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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Development of an underwater setting method for surface longliners, to minimise the accidental capture of seabirds
Abstract: In response to the Department of Conservation's concerns for the accidental ... placement devices were evaluated. Two methods being selected for further in depth evaluation. The first ... concept being a towed paravane with an endless cable employed to transport and release the bait at the ... depth to which the paravane was set. Although practical bait carrying devices were designed, the ability ...
Meeting Document : WG-FSA-97/54 : Auteur(s): Bentley, N., Smith, M.
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Cephalopods and mesoscale oceanography at the Antarctic polar front: satellite tracked predators locate pelagic trophic interactions
Abstract: Predator data and exploratory fishing in the Scotia Sea have revealed the presence of ... cephalopod stocks in the Antarctic Polar Frontal Zone (PFZ). This is a vast, remote region where large ... cephalopod concentrations, and sampled them with commercial and scientific nets to determine the relationship ... between cephalopod distribution and mesoscale oceanographic features at the PFZ. Satellite tags were ...
Meeting Document : WG-EMM-96/12 : Auteur(s): Murphy, E.J., Trathan, P.N., White, M.G., Bone, D.G., Hatfield, E.M.C., Rodhouse, P.G., Prince, P.A., Watkins, J.L.
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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 ... migration model for describing crab distribution, movement, and recruitment during the simulation. The ...
Meeting Document : WG-FSA-94/26 : Auteur(s): G. Watters (USA)