Résultats de la recherche

1. Performance of an acoustic sonde design

   is widely recognized. At a U.S. GLOBEC workshop in 1991, one of the considered problems was measuring ... Abstract:  The potential of multi-frequency acoustic technology for quantifying fish and plankton ... macrozooplankton and micronekton. It was concluded that in order to survey animals in the size range 0.5-5 cm, it ... would be expedient to use at least three and perhaps as many as 8-10 frequencies in the range 38-420 kHz ...

   Meeting Document : WG-EMM-95/09 : Auteur(s): Foote, K.G.

2. Effect of missing modes on calibration sphere target strengths (ICES CM 1996/b: 37, Fish Capture Committee)

   used in the calibration of echo sounder systems, can be affected by the manner of suspension. This ... hypothesis is investigated in the context of reported experimental calibration trials with the SIMRAD EK500 ... reported measurement conditions for a series of cases in which single vibration modes remain unexcited. The ... is not supported by the data. Author(s):  Foote, K.G. Title:  Effect of missing modes on calibration ...

   Meeting Document : WG-EMM-96/46 : Auteur(s): Foote, K.G.

3. An assessment of temporal variability and interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island

   Abstract:  We examined temporal variability in a series of CEMP parameters collected over the ... the correlation of each parameter with breeding success. Breeding success was measured in terms of 1 ... sex of the foraging birds and the timing of foraging trips were important in determining whether ... ) the absolute number of chicks on the island which fully crèche and 2) the number of chicks crèched per ...

   Meeting Document : WG-EMM-02/46 : Auteur(s): L.M. Emmerson, J. Clarke, K. Kerry and C. Southwell (Australia)

4. Global relationships amongst black-browed albatrosses: analysis of population structure using mtDNA and microsatellites

   five island groups in the Southern Ocean. High levels of sequence divergence were found in both taxa ... could be the result of differences in foraging and dispersal patterns. Breeding black-browed albatrosses ... Abstract:  The population structure of black-browed (Thalassarche melanophris and T. impavida) and ... (T. impavida). T. melanophris from Campbell Island contain birds from each of the three groups ...

   Meeting Document : WG-FSA-01/19 : Auteur(s): T.M. Burg and J.P. Croxall (United Kingdom)

5. An exploratory analysis of skate speciation using DNA identification techniques

   region, were sequenced in specimens of Antarctic skates from the Ross Sea (Pacific Ocean sector), the ... Abstract:  Two regions of the mitochondrial DNA, part of the cytochrome b gene and the control ... Islands (Atlantic Ocean sector). Based on the DNA results, the species of Bathyraja referred to as B ... . eatonii in the Ross Sea appears to be a discrete sister species to B. eatonii from the Atlantic sector. In ...

   Meeting Document : WG-FSA-04/27 : Auteur(s): P.J. Smith and S.M. McVeagh (New Zealand)

6. Species profile of mackerel icefish (Champsocephalus gunnari)

   and became the target species of fisheries in many parts of the low-Antarctic from 1975 to 1990 ... ’s with annual catches of a few thousand tonnes in each of the two areas. Aspect of the biology and ... exploitation of the species have been summarized in Kock and Everson (2003) and Kock (2005). Additional ... . Exploitation has been limited to South Georgia and Heard and McDonald Islands since the second half of the 1990 ...

   Meeting Document : WG-FSA-07/12 : Auteur(s): K.-H. Kock (Germany) and I. Everson (UK)

7. Fishing patterns of Japanese krill trawlers

   , 30nm, and 60nm). Distribution of the operation units showed considerable variation in space and time ... expressing the status of krill in the fishing ground. Catch per fishing days maybe the reasonable index for ... expressing the status of krill in the fishing ground. Author(s):  S. Kawaguchi, T. Kameda and Y. Takeuchi ... strategies, especially focusing on their movement in time and space. The operations were grouped into ...

   Meeting Document : WG-EMM-02/28 Rev. 1 : Auteur(s): S. Kawaguchi, T. Kameda and Y. Takeuchi (Japan)

8. Standardisation of commercial CPUE

   Abstract:  This paper reports analysis of CPUE data on cod in the Barents Sea.  The potential of ... vessel trawling operations take place at acceptable proximity in time and space. The methodological ... approach might be of interest for the longline fishery for tothfish as well as for the trawl fishery on ... krill. A model for standardisation of fishing power for individual vessels in a commercial fishing fleet ...

   Meeting Document : WG-SAM-15/P01 : Auteur(s): A. Salthaug and O.R. Godø

9. Estimating penguin populations using image analysis of colour aerial photography

   Abstract:  Penguin populations are potentially sensitive indicators of change in the Antarctic and ... sub-Antarctic and are used extensively to monitor changes in the marine ecosystem. Aerial photographic ... colonies, for colonies in areas of complex terrain, or for colonies where ground access is difficult ... study colonies, highlighting various assumptions that contribute to differences in the population ...

   Meeting Document : WG-EMM-02/34 Text : Auteur(s): P.N. Trathan (United Kingdom)

10. On commercial significance of krill aggregations

    of acoustic investigation obtained in the Soviet trawler operation areas in Subareas 48.1-48.4 were ... and 2002 (2380 hauls). In the course of the recent twenty years, krill has been fished in the areas ... numbering 22000 hauls for the period of 1986-1990 and those from Ukrainian trawlers for the period of 2001 ... estimated at 24 g/m2 (Boyd, 2001). As is evident from comparison of above density values, the fleet and ...

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

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