Résultats de la recherche

1. Indices of prey availability near the Seal Island CEMP site: 1990 through 1996

   Abstract:  Four indices of prey availability are calculated for prey surveys conducted in the ... vicinity of the Seal Island CEMP site during the austral summers of 1990-96. The indices are measures of ... AMLR surveys each year were sub-sampled to include the foraging range of predators breeding at Seal ... Island. The average depth of the prey field and its average distance from Seal Island were positively ...

   Meeting Document : WG-EMM-96/22 : Auteur(s): Hewitt, R.P., Demer, D.A., Watters, G.

2. Using digital video monitoring systems in fisheries: applications for monitoring compliance of seabird avoidance devices and seabird mortality in Pacific halibut longline fisheries

   Halibut Commission (IPHC) for a project examining the feasibility of electronic monitoring systems (EMS ... ) in the Pacific halibut longline fleet operating off the state of Alaska. The project was conducted on ... two of the IPHC stock assessment survey vessels fishing in Alaska during 2002. The objectives of the ... project were to: 1) examine the ability of an electronic monitoring system to provide images that would ...

   Meeting Document : WG-FSA-04/24 : Auteur(s): R.T. Ames, G.H. Williams and S.M. Fitzgerald (USA)

3. The effect of temporal variability on power analysis predictions for Adélie penguin CEMP parameters at Béchervaise Island

   Abstract:  There are unresolved issues surrounding the use of power analyses for examining the ... ability of CEMP data to detect change. The effect size that should prompt a response if observed in a ... parameter and the likely response of parameters such as arrival or fledgling weights are two of these issues ... . Understanding the source of the variability required to generate ‘noise’ for the power analysis simulations is ...

   Meeting Document : WG-EMM-03/49 : Auteur(s): L.M. Emmerson and C. Southwell (Australia)

4. Distribution of the Soviet fishing fleet and catches (CPUE) in Subdivision 48.3 during 1986–1990

   Abstract:  Analysis of the fishing fleet operation is one of preconditions of krill fishery small ... -scale management units determination. In this work the available data of haul by haul catch statistics ... along the outside periphery of the doubling off- Island current of anticyclone pattern at the points of ... current (the western ground). Temporal-spatial variability of these grounds has been analyzed. The eastern ...

   Meeting Document : WG-EMM-02/63 Rev. 1 : Auteur(s): V.A. Sushin, P.C. Gasiukov, A.V. Zimin and S.M. Kasatkina (Russia)

5. Penguin foraging behavior in relation to the distribution of prey

   Abstract:  The diving behavior of 7 chinstrap penguins (Pygoscelis antarctica) (N=12,171 dives ... ) was measured concurrently with a hydroacoustic assessment of the vertical distribution and abundance ... of their primary prey, krill (Euphausia superba) in the vicinity of Seal Island, South Shetland ... migration pattern, being dispersed in the upper portion of the water column at night and more concentrated ...

   Meeting Document : WG-KRILL-93/47 : Auteur(s): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)

6. Aggregation patterns of pelagic predators and their principal prey, Antarctic krill, near South Georgia

   Abstract:  1. We examine the spatial distributions of pelagic seabirds and. fur seals near South ... Georgia, and asked to what extent the distributions of these predators were influenced by the spatial ... distribution of their principal prey, Antarctic krill Euphausia superba Dana. One novel aspect of our analysis ... is an explicit consideration of the separation in space between swarms of krill and aggregations of ...

   Meeting Document : WG-CEMP-93/13 : Auteur(s): R.R. Veit (USA), E.D. Silverman (USA) and I. Everson (United Kingdom)

7. Distributions and predator-prey interactions of macaroni penguins, Antarctic fur seals, and Antarctic krill near Bird Island, South Georgia

   Abstract:  We studied the distributions, abundances and interactions of macaroni penguins Eudyptes ... . Simultaneous surveys of marine birds, Antarctic fur seals and Antarctic krill were conducted along a series of ... transects radiating from the breeding colonies of the vertebrate predators. We examined the relationships ... between the distributions of predators and their prey with respect to the abundance of krill in the water ...

   Meeting Document : WG-CEMP-93/12 : Auteur(s): G.L. Hunt, Jr (USA), D. Heinemann (USA) and I. Everson (United Kingdom)

8. Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set

   Abstract:  In the vicinity of the northern tip of Antarctic Peninsula, the Bransfield Straits and ... Pacific Ocean. A series of fronts form which collectively are referred to as the Weddell-Scotia Confluence ... a zone of varied width (10 to 100 Km) of water which can best be considered as continental margin ... water, advected into the region along the extreme western edge of the Weddell Gyre. It is relatively ...

   Meeting Document : SC-CAMLR-VII/BG/19 : Auteur(s): United States of America

9. A methodology for estimating total finfish by-catch of the Area 48 krill fishery

   bycatch of the Area 48 krill fishery and quantify the impact of bycatch on the finfish stocks using data ... . Estimates of bycatch rates per tonne of catch were made at a family level for Channichthyidae, Nototheniidae ... rates were applied to estimates of krill catch to estimate precautionary total bycatch numbers of each ... and Notothenia rossii were used to convert total bycatch numbers to biomass at age of 50% maturity ...

   Meeting Document : WG-EMM-12/29 : Auteur(s): T. Peatman, S.M. Martin (United Kingdom), O.R. Godø (Norway) and R.C. Wakeford (United Kingdom)

10. Progress report on the research longline fishery of Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa: 2012/13

    so far they have concentrated their sampling effort in the southern section (south of 60˚S), where ... they caught a total of 162.8 tonnes of Dissostichus spp. out of the 200 tonne catch limit (Table 2 ... ). They have taken only 65.2 tonnes of Dissostichus spp. from the northern section to date. A total of 1 ... tagging rate of 5 fish per ton. A total of 213 D. eleginoides and 5 530 D. mawsoni) were measured. The ...

    Meeting Document : WG-SAM-13/05 : Auteur(s): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)

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