Résultats de la recherche

1. The breeding biology and distribution of Adelie penguins: adaptations to environmental variability

   breeding areas by Adelie penguins, following two to three years of failure at "poor" sites ... Research (LTER) study of the effects of environmental variability on animal populations in the Antarctic ... breeding sites within colonies. Author(s):  Fraser, W.R., Trivelpiece, W.Z. Title:  The breeding biology ...

   Meeting Document : WG-EMM-96/58 : Auteur(s): Fraser, W.R., Trivelpiece, W.Z.

2. Results of E.L. Holmberg 1995 fish survey in Subarea 48.3

   aggregation of stations in a nested ANOVA model. An increase over last year's values was observed in the ... Abstract:  The survey comprised 48 bottom trawl hauls taken in subarea 48.3. About 80% of the ... comparison between both cruises. Of these, 20 hauls were located at less than 0.5 miles and 11 between 0.5 ... the Scotia Sea. Plankton samples contained krill more often than last year and an hydroacoustical ...

   Meeting Document : WG-FSA-95/35 : Auteur(s): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.

3. A brief outline of the biology of the Antarctic silverfish, Pleuragramma antarcticum Boulenger, 1902 (Nototheniidae) from the Antarctic Indian Ocean

   4-7 years of age. The potential absolute and relative fertility of this species is one of the ... three relatively isolated groups. Fish aged from 0+ to 3+ years live in the epi- mesopelagic zone where ... there are macro aggregations of plankton, while fish aged from 3+ to 12+ years form near-bottom, pelagic ... Abstract:  The Antarctic silver fish (Pleuragramma antarcticum) is one of the most numerous ...

   Meeting Document : WG-FSA-92/11 Rev. 1 : Auteur(s): V.V. Gerasimchuk (Ukraine)

4. TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA

   prey) will vary between different life history stages at different times of the year in different areas ... further away (Testa et al. 1985). • Direct information on diet of the Weddell seals, including diver ... observations, animal-mounted camera information, and observations from field scientists in the McMurdo Sound ... January, it is plausible but unproven that they are an important prey item. Author(s):  M.H. Pinkerton, A ...

   Meeting Document : WG-EMM-08/43 : Auteur(s): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)

5. Status of krill target strength

   cause of bias in single-animal measurements, namely thresholding. Theoretical estimates for the target ... dependence of target strength on both animal size and transmit frequency, notwithstanding admitted ... shortcomings. Some recent single-animal measurements of target strength for live euphausiids and euphausiid ... are applicable to a wide range of lengths, acoustic frequencies, and orientation parameters. Author(s ...

   Meeting Document : WG-KRILL-92/11 : Auteur(s): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)

6. The direct impact of fishing and fishery-related activities on marine life in the CCAMLR Convention Area with particular emphasis on longline fishing and its impact on albatrosses and petrels – a review

   Abstract:  Finfishing started in the Southern Ocean more than 30 years ago at South Georgia and ... Iles Kerguelen. The fishery extended further south for a few years in the second half of the 1970&#039 ... local and killed probably only a few animals per year. Author(s):  Delegation of Germany Title:  The ... Ocean within one season. A number of direct effects from fishing activities can be seen on marine life ...

   Meeting Document : SC-CAMLR-XIX/BG/11 : Auteur(s): Delegation of Germany

7. Possible effects of different levels of fishing on krill on predators - some initial modelling attempts

   Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... breeding success patterns for certain krill predator species. A "one-way" interaction model is ... merit discussion at the forthcoming WG-Kril1 and WG-CEMP meetings. A formalism for a "two-way" ... , but computations based on this approach are deferred pending clarification of the Questions raised ...

   Meeting Document : WG-KRILL-93/43 : Auteur(s): D.S. Butterworth and R.B. Thomson (South Africa)

8. Results of E.L. Holmberg 1997 fish survey in Subarea 48.3

   this species in the whole subarea 48.3, is dominated by younger fish (less than two years). Four years ... Abstract:  The survey comprised 51 bottom trawl hauls taken in subarea 48.3. Of these, one was ... discarded due to net damage. About 80% of the hauls were taken in the shelf of South Georgia Islands (41 ... , including Champsocephalus gunnari at the shelf of the South Georgia Islands. The age and size structure of ...

   Meeting Document : WG-FSA-97/47 : Auteur(s): Prenski, B., Calcagno, J., Marschoff, E.R., Gonzalez, B.

9. Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area

   this period were located in the west shelf area (48°30’- 49°30’S and 66°50’- 67°20’E). Total catch was ... concentrated in the north shelf area (47°10’- 47°30’S and 66°50’- 67°20’E). Total catch was about 5.2 x 103 ... fluctuate considerably, mean fish length was 76.0- 86.6 cm. Fish of two to 14 years old age groups were most ... abundant in catches, mean age was 8.2- 9.8 years. In the 1991/92 season fishing for the species was ...

   Meeting Document : WG-FSA-92/08 : Auteur(s): V.G. Prutko and V.N. Chikov (Ukraine)

10. Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation

    and video footage from several Antarctic krill were carried out to determine the effect of animal ... Classification (CMVC) approach, using generic and animal-specific theoretical and empirical model spaces. The ... animal-specific empirical model space was best able to invert for angle of orientation. The CMVC ... orientation based on broadband echoes from individual zooplankton in the field. Author(s):  L.V. Martin ...

    Meeting Document : WG-EMM-99/41 : Auteur(s): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)

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