Résultats de la recherche

1. Age and growth of Antarctic euphausiacea (crustacea) under natural conditions

   regressions. No difference in growth of krill was observed between the Antarctic Peninsula area and the ... Abstract / Description:  Five species of Antarctic euphausiid crustaceans were studied from the Antarctic ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... shorter life span than females, while their growth rate is similar. A short description of the life cycle ... difference in growth of krill was observed between the Antarctic Peninsula area and the eastern Weddell Sea ... Five species of Antarctic euphausiid crustaceans were studied from the Antarctic Peninsula and the ... than females, whlle their growth rate is similar. A short description of the life cycle and ... generation time of each species is given. In general, Antarctic euphausiids seem to remature and spawn at ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Auteur(s): Siegel, V.

2. Accumulation of stranded plastic objects and other artefacts at Inaccessible Island, central South Atlantic Ocean

   sources had increased by at least 120 per cent, suggesting a recent increase in the density. of artefacts ... m boulder beach at the western point of Inaccessible Island, central South Atlantic Ocean. This ... repeated the survey made at the same site during 1984, when the highest density of artefacts at the Tristan ... Inaccessible Island. The minimum rate of artefact accumulation was 88 objects km-1 year-1. Total numbers of ...

   Meeting Document : CCAMLR-VII/BG/04 : Auteur(s): P.G. Ryan and B.P. Watkins (South Africa)

3. Population trends of albatrosses and petrels at sub-Antarctic Marion Island

   , could be contributing to the recent decreases in some of these species. Adoption of mitigation measures ... Abstract:  We report on the population changes of five species of Procellariiform seabirds ... during the early to mid-1990s. Recently, all species have once again stabilized or decreased in numbers ... and can be explained by changes in tuna (Thunnus spp.) longline fishing effort in the southern Indian ...

   Meeting Document : WG-FSA-01/11 : Auteur(s): D.C. Nel, P.G. Ryan, R.J.M. Crawford, J. Cooper and O. Huyser (South Africa)

4. 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.

5. 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.

6. 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)

7. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   include krill in food-web models and to guide modellers to key sources of data. It describes the strengths ... . Temporally, the intense (order of magnitude) interannual variability in krill population size within the ... are still not yet confident which are the major predators of krill but studies increasingly suggest ... Paper Title:  Fitting Euphausia superba into Southern Ocean food-web models: a review of data ... tend to concur that mean krill den- sity and recruitment strength declined in the latter decades of ... superba). This is because (i) they have an important role in the food web of parts of the Southern Ocean ... (order of magnitude) interannual variability in krill population size within the southwest (SW) Atlantic ... ). They have also been found in the diets of benthic predators (Dearborn et al., 1991; Main and Collins ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Auteur(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

8. 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)

9. 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)

10. 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)

Pages