Результаты поиска

1. Spawning activity of mackerel icefish at South Georgia

   intensity almost certainly occurs over much of the shelf although the intensity appears to be small in ... Abstract:  Historical information is assessed on the distribution of spawning and larval mackerel ... April within and close to the bays on the north side of the island. Some spawning at much lower ... comparison with inshore spawning. There is some evidence for spawning at Shag Rocks although the precise ...

   Meeting Document : WG-FSA-00/27 : Автор(ы): I . Everson, A. North (United Kingdom) and K.-H. Kock (Germany)

2. SPATIAL PROTECTION AND MANAGEMENT OF ANTARCTIC MARINE BIODIVERSITY

   April 2009). It provides information on the different objectives and types of marine spatial protection ... and management that can be implemented in Antarctic waters, including details on the tools currently ... establishment of effective, representative and coherent spatial protection of marine biodiversity, using the ... full range of tools available under CCAMLR and the ATCM. Cooperate as far as possible with the CEP to ...

   Meeting Document : WG-EMM-09/09 : Автор(ы): S. Grant (United Kingdom)

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

   one-month period in the fall of 2002. Detailed analysis of about 200 hours of fishing imagery occurred ... delivery and head and gut bottom trawl vessels conducting operations in the Bering Sea, U.S. Exclusive ... cables. The EM system provided imagery of sufficient quality to detect the presence, abundance, and ... to detect third-wire entanglements of seabirds although it was not possible to determine the cause of ...

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

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

   one-month period in the fall of 2002. Detailed analysis of about 200 hours of fishing imagery occurred ... delivery and head and gut bottom trawl vessels conducting operations in the Bering Sea, U.S. Exclusive ... cables. The EM system provided imagery of sufficient quality to detect the presence, abundance, and ... to detect third-wire entanglements of seabirds although it was not possible to determine the cause of ...

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

5. Modelling growth of Antarctic krill: growth trends with sex, length, season, and region

   this model was used to predict seasonal IMP using a model of the average sea-surface temperature ... small to negative values of IGR predominating across all size classes by autumn. The period of rapid ... growth was December in Indian sector, whereas in the Scotia Sea sector it appeared to be a few months ... Abstract:  Growth trends of Antarctic krill with sex, length, season and region using over 10 ...

   Meeting Document : WG-EMM-05/29 : Автор(ы): S. Kawaguchi, S. Candy, R. King (Australia), M. Naganobu (Japan) and S. Nicol (Australia)

6. Estimating abundance of Antarctic fur seals at South Georgia

   Abstract:  This paper presents a description of the statistical approach developed to estimate ... abundance of Antarctic fur seals at South Georgia. The estimate is based on photographic counts of all the ... breeding beaches in the fur seal’s distribution range. The images were obtained during comprehensive ... helicopter surveys conducted during 2006 and 2008. The proposed Bayesian analysis scales up in situ counts to ...

   Meeting Document : WG-EMM-14/09 : Автор(ы): J. Forcada, I.J. Staniland, A.R. Martin, A.G. Wood and P.N. Trathan (United Kingdom)

7. Target strengths of krill at 136 and 20 kHz

   . Ensonification of encaged live krill. For aggregations with mean lengths from 45 to 50 mm the mean single-krill ... . At the same frequency for aggregations with mean lengths in the range 41 to 47 mm the mean single ... -krill target strength is in the range-76 to-81 dB. File:  08-Kasatkina.pdf ... the mean single-krill target strengths range from-71 to-77 dB at 20 kHz. Trawl hydroacoustic method ... . Mean length of specimens was 49.9 mm and mean weight was 0.814 g. Males were dominant in the catches ... metal frame in the shape of a truncated pyramid. The hydroacoustic transducer connected to the impulse ... difraction zone in the area being measured and the optimal ratio of target sizes to the transducer size ... • hydroacoustic transducer (piezoceramic) • width of directional diagram at 3 dB - 10°. The cage was cubic in ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 141–157 : Автор(ы): Kasatkina, S.M.

8. Measurements of fish school velocities with an acoustic Doppler current profiler

   ), it was required that the four ADCP beams simultaneously insonified a fish school, in the same depth ... estimates and ensemble averaged to determine the average speeds and directions of fish aggregations. The ... results suggests that the ADCP can be a useful tool for observing fish behavior in certain situations ... . Some applications may include the quantification of horizontal and vertical migration patterns of large ...

   Meeting Document : WG-EMM-96/41 : Автор(ы): Demer, D.A.

9. On possible impact of new continuous krill fishing technology on juvenile fish and larvae

   fishing technology may result in considerable by-catch of the juvenile fish and larvae in krill fishery ... powerful pumping system for continuous pumping the catch out of the trawl bag. It was discussed the ... Abstract:  The new continuous krill fishing system uses both a small-meshed midwater trawl and a ... potential threats of new technology to Antarctic marine ecosystem. It was shown that application of this ...

   Meeting Document : WG-FSA-06/23 : Автор(ы): S.M. Kasatkina

10. Synopsis of CEMP and non-CEMP predator parameters from Admiralty Bay and Cape Shirreff, South Shetland Islands, Antarctica: their relationships to krill abundance and ice cover, 1978–2003

    . Results of the analyses are presented in a series of 6 Tables, following the outline of a Draft paper by ... , South Shetland Islands, Antarctica were analysed to assess the characteristics of the individual ... K.Reid for similar analyses at South Georgia. The tabular data include: 1. Table 1. A list of the penguin ... performance indices collected at the two sites 2. Table 2. Data on annual variability in krill biomass density ...

    Meeting Document : WG-EMM-03/61 : Автор(ы): W.Z. Trivelpiece (USA), K. Salwicka (Poland) and S.G. Trivelpiece (USA)

Страницы