Результаты поиска

1. 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 : Автор(ы): R.T. Ames, G.H. Williams and S.M. Fitzgerald (USA)

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

   this paper have similar power estimates because their estimates of temporal variability are comparable ... 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 ...

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

3. 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 : Автор(ы): D.A. Croll, R.P. Hewitt, D.A. Demer and J.K. Jansen (USA)

4. 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 : Автор(ы): G.L. Hunt, Jr (USA), D. Heinemann (USA) and I. Everson (United Kingdom)

5. 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 : Автор(ы): United States of America

6. 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 : Автор(ы): T. Peatman, S.M. Martin (United Kingdom), O.R. Godø (Norway) and R.C. Wakeford (United Kingdom)

7. 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 : Автор(ы): R. Leslie (South Africa), K. Taki, T. Ichii (Japan) and S. Somhlaba (South Africa)

8. Predation release of Antarctic silverfish (Pleuragramma antarctica) in the Ross Sea

   Abstract:  Between 2001 and 2013 the number of breeding pairs of Adélie penguins (Pygoscelis ... half a million. It has been suggested that predation release of Antarctic silverfish (Pleuragramma ... antarctica) due to fishing of one of its predators, Antarctic toothfish (Dissostichus mawsoni), could have ... , consumption rates and diets of toothfish and Adélie penguins over the Ross Sea shelf as a first test of the ...

   Meeting Document : WG-EMM-15/53 : Автор(ы): M.H. Pinkerton, P. Lyver, D. Stevens, J. Forman, R. Eisert and S. Mormede (New Zealand).

9. Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem

   factors. This paper reviews the scientific information of whales that could be indicative of changes in ... the East Antarctica ecosystem in the context of two hypotheses, the ‘krill surplus’ hypothesis in the ... middle of the past century and the recovery of krill-eater large whales since the 1980’s. There was an ... interest to investigate the effects of those events on other krill predators such as the Antarctic minke ...

   Meeting Document : WG-EMM-16/64 : Автор(ы): Y. Fujise and L.A. Pastene

10. Molecular analysis of stomach contents from Antarctic toothfish (Dissostichus mawsoni) collected from Area 58 and 88 from 2016 to 2018

    , the ecology of D. mawsoni is still fragmental mainly due to the limited accessibility for the sample ... collection. Diet study provides the basic information of feeding relationship among the different trophic ... levels. Since 2016, we have been studying the stomach contents of D. mawsoni by the combination of ... report about the prey item of D. mawsoni collected from the two research areas (58 and 88) from 2016 to ...

    Meeting Document : WG-FSA-2019/37 : Автор(ы): S.R. Lee, S.-G. Choi, S. Chung, D.H. An and H.-W. Kim

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