Результаты поиска

1. Electronic monitoring of seabird interactions with trawl third-wire cables on trawl vessels – a pilot study

   third-wire cables on trawl vessels. This pilot study involved field testing of EM systems on shoreside ... Economic Zone. EM systems, consisting of two closed circuit television cameras, GPS, hydraulic and winch ... one-month period in the fall of 2002. Detailed analysis of about 200 hours of fishing imagery occurred ... cables. The EM system provided imagery of sufficient quality to detect the presence, abundance, and ...

   Meeting Document : WG-FSA-04/23text : Автор(ы): H. McElderry, J. Schrader, D. McCullough, J. Illingworth, S. Fitzgerald and S. Davis (USA)

2. On commercial significance of krill aggregations

   of acoustic investigation obtained in the Soviet trawler operation areas in Subareas 48.1-48.4 were ... numbering 22000 hauls for the period of 1986-1990 and those from Ukrainian trawlers for the period of 2001 ... and 2002 (2380 hauls). In the course of the recent twenty years, krill has been fished in the areas ... with biomass density of at least 100 g/m2. This threshold value of krill commercial biomass ...

   Meeting Document : WG-EMM-03/31 : Автор(ы): S.M. Kasatkina (Russia)

3. Trends in bird and seal populations as indicators of a system shift in the Southern Ocean

   components is poorly understood because of the difficulty of obtaining long-term data sets on marine ... organisms. The Southern Ocean plays a critical role on global climate and there is growing evidence of ... a time lag of 2–9 years with temperatures, the population size of most seabirds and seals monitored ... . These changes, together with the indications of a simultaneous decrease in secondary production in sub ...

   Meeting Document : WG-EMM-03/53 : Автор(ы): H. Weimerskirch, P. Inchausti, C. Guinet and C. Barbraud (France)

4. Changes to seabird avoidance regulations in Alaska demersal longline fisheries based on scientific research on effectiveness of mitigation measures

   longline fisheries off Alaska. One of the main recommendations is for the required use of paired streamer ... Washington Sea Grant Program (WSGP) on the effectiveness of seabird avoidance measures in the longline ... fisheries off Alaska. For complete details of the research, results, and recommendations, see the WSGP final ... (WG-FSA 01/35). Rigorous experimental tests of seabird avoidance measures on the local abundance ...

   Meeting Document : WG-FSA-02/53 : Автор(ы): K.S. Rivera (USA)

5. Interannual variability of polynya extent in the Antarctic Ocean

   Abstract:  There are two general kinds of polynya (an ice-free area within sea ice borders ... processes by exposing the surface of ocean to the atmosphere. Additionally, we think that the coastal ... reports on the place, time and shape of the coastal polynyas. Accordingly, we pursued the transition of ... the coastal polynyas using satellite image data of sea ice concentrations by the NSIDC (National Snow ...

   Meeting Document : WG-EMM-01/34 : Автор(ы): M. Naganobu and K. Segawa (Japan)

6. Trawl survey of the Patagonian toothfish (Dissostichus eleginoides) resource off the Prince Edward Islands

   Abstract:  A bottom trawl survey was conducted in the northern half of the South African EEZ ... around the Prince Edward Islands in April 2001. Due to the paucity of bathymetric data, it was not ... study to ascertain the feasibility of conducting future trawl surveys, and to collect relevant data to ... aid in the design of such surveys should they be deemed practical. The maximum operating depth for the ...

   Meeting Document : WG-FSA-01/72 : Автор(ы): R.W. Leslie and B.P. Watkins (South Africa)

7. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

   Abstract:  During the period March to May 2000, the UK undertook trials of a pot fishing method to ... trial, the results, and discusses the commercial viability of this fishing method for toothfish ... of crab species. The catch rate of toothfish was notably lower than that achieved in the longline ... fishery. Importantly, the use of pots eliminated bird bycatch. To capitalise on this feature, there is a ...

   Meeting Document : WG-FSA-00/23 : Автор(ы): D. Agnew, T. Daw, M. Purves and G. Pilling (United Kingdom)

8. Catchability of midwater trawls in relation to krill fishery

   estimation of total krill lengths distribution, obtained on the basis of trawl samples from different catched ... total distribution of krill length, obtained using weighting of trawl samples (usually 200 ind.) against ... the catch, may considerably differ (statistically significantly) from that calculated on the basis of ... trawling. The example of trawl samples processing for the study area off Elephant Island is presented ...

   Meeting Document : WG-EMM-98/20 : Автор(ы): S.M. Kasatkina (Russia)

9. Acoustic estimates of krill abundance at South Georgia, 1981–1998

   Abstract:  Acoustic estimates of abundance of the Antarctic krill, Euphausia superba, at South ... includes some previously published estimates arising from cruises where determination of krill density was ... subsidiary during other studies of the pelagic ecosystem at South Georgia. Krill abundance at the island ... and 1994 austral summer seasons were characterised by particularly low abundances of krill. For five ...

   Meeting Document : WS-AREA 48-98/9 : Автор(ы): A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK)

10. Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in trammel net catches at Potter Cove, South Shetland Islands

    Abstract:  A monitoring program of demersal fish in inshore sites of the South Shetland Islands ... has continued in Potter Cove from 1991 to 1998, covering a continuous sampling period of 15 years and ... in Harmony Cove, Nelson Island, in the austral summer 1995/96. The decline in trammel net catches of ... fjord fishes of the species Notothenia rossii and Gobionotothen gibberifrons in relation to the non ...

    Meeting Document : WG-FSA-98/57 : Автор(ы): E. Barrera-Oro, E.R. Marschoff and R.J. Casaux (Argentina)

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