Résultats de la recherche

1. CHARACTERISING KRILL FISHERY DYNAMICS USING A RANDOM WALK MODEL

   -distances were well described by a Levy Flight type random walk model. The inferred distribution pattern of ... tonnes/hour and 7 tonnes/hour in autumn in Area 48.1. Fishers seemed to be forced to make a number of ... long distant movements at the beginning of the fishing season, and autumn was suggested as optimal ... season since generally less searching seemed to be required due to higher target density in the fishing ...

   Meeting Document : WG-EMM-09/18 : Auteur(s): S. Kawaguchi, S. Candy and A. Constable (Australia)

2. CCAMLR scientific observation: tasks, priorities and time budget

   Abstract:  The workload of the tasks required in the CCAMLR Observer manual is assessed. The total ... time needed for the minimum amount of daily routine tasks was well above the capacity that an observer ... instructions in the manual, can produce the report and logbook data which is collected systematically and ... to undertake. The manual must be structured as its entirety so that the observer, only by following ...

   Meeting Document : WG-EMM-07/26 : Auteur(s): S. Kawaguchi (Australia)

3. Fishing gear, oil and marine debris associated with seabirds at Bird Island, South Georgia, 1993/94

   of the incidence of fishing line and hooks associated with, regurgitated by and impaled in seabirds ... Georgia sea-birds at present, the increase in number and variety of environmental threats is a cause for ... Abstract:  We record the first observations of oiled albatrosses at South Georiga, provide data on ... ingestion of plastics by albatrosses and giant petrels and report a six-fold increase over the previous year ...

   Meeting Document : SC-CAMLR-XIII/BG/04 : Auteur(s): Delegation of United Kingdom

4. Age/length key for Champsocephalus gunnari from South Georgia; Hill Cove survey, January 1990

   of Ch. gunnari from the Hill Cove survey around South Georgia in January 1990. A revised age length ... Abstract:  Discrepancy was noted between the age length key and modes in the length distribution ... key for this survey is proposed, based on data from a previous survey in the area. The revised age ... length key corresponds well to modes in the length distribution from the survey and to another key ...

   Meeting Document : WG-FSA-91/18 : Auteur(s): G. Parkes (United Kingdom)

5. UNDERWATER ACOUSTIC INSTRUMENTATION FOR ANTARCTIC APPLICATIONS

   Abstract:  In order to describe an aquatic ecosystem scientists require a variety of information ... vessels. In this paper a variety of underwater acoustic technologies are presented to serve as input for ... the discussion of what kind of underwater acoustic instrumentation is needed for both research vessels ... , potentially commercial fishing vessels, and other types of installations in order to obtain improved ...

   Meeting Document : SG-ASAM-09/09 : Auteur(s): L. Andersen (Norway)

6. Steepness for Antarctic toothfish (Dissostichus mawsoni) based on life history

   -recruitment relationship, it is deeply rooted in the biology of each species.  Furthermore, specifying ... steepness in a stock assessment.  We take the first step towards a consistent treatment of steepness for ... points that are commonly used in fisheries management.  Thus, one cannot pick an arbitrary value of ... estimates of steepness and their use in stock assessments. Author(s):  M. Mangel, J. Brodziak and G.M ...

   Meeting Document : WG-FSA-14/32 : Auteur(s): M. Mangel, J. Brodziak and G.M. Watters (USA)

7. Antarctic fur seal (Arctocephalus gazella) pup growth rates obtained at Cape Shirreff, Livingston Island, South Shetlands: 1994/95 to 1997/98 (CEMP Index C2, Procedure B)

   to give a first insight into variation of Antarctic fur seal reproductive performance in the CEMP ... differences on reproductive strategies between populations of A. gazella. An important decrease in A. gazella ... extent, and directly by krill or salp dominance, since the highest value of male growth rate (1995/96 ... less deviation from the mean, while females on both sites had very similar growth rates. If these ...

   Meeting Document : WS-AREA 48-98/18 Rev. 1 : Auteur(s): R. Hucke-Gaete, V. Vallejos and D. Torres (Chile)

8. Demographic studies for CEMP

   Standard Methods 2003 appear adequate. Revision may be required in the future following consideration of ... how aspects of predator demographics may be used for management in the CCAMLR context. The ... methods for determining demographic parameters. It is noted the methods (CEMP A4) as published in CEMP ... considerable tagging and search effort required to obtain demographic data and the period over which such ...

   Meeting Document : WG-EMM-03/45 : Auteur(s): K.R. Kerry, J.R. Clarke and L.M. Emmerson (Australia)

9. Antarctic seafloor geomorphology as a guide to benthic bioregionalisation

   features of the Antarctic continental margin and adjoining ocean basins at scales of 1:1-5 million. The ... of the shelf benthic communities recognised by a number of authors. For areas off the shelf, the ... influence benthic communities, even in the absence direct measurements. The conclusion from this preliminary ... study of sea floor geomorphology from the Antarctic is that there is enough data to available already to ...

   Meeting Document : SC-CAMLR-XXVI/BG/27 : Auteur(s): Delegation of Australia

10. Beach debris survey - Main Bay, Bird Island South Georgia 1992/93

    those used in the local longline fishery as indicated by sections of longline washed ashore. Packaging ... Abstract:  The third year of survey of beach debris at Main Bay, Bird Island reported only a small ... bands were not found until August, coinciding with the arrival of krill fishing vessels off northwest ... (14%) reduction in overall debris levels, comprising a 12% increase and 25% decrease in summer and ...

    Meeting Document : CCAMLR-XIII/BG/03 : Auteur(s): Delegation of United Kingdom

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