Résultats de la recherche

1. Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems

   average values of ca. 18 hours for low catch rates to ca. 3 hours for high catch rates. The deviance in ... ensure catch reporting in accordance with the present conservation measure (CM 21-03) and to investigate ... potential errors in historical catch report data. As a response, the Norwegian delegation presented a list ... estimate variability in the conversion from krill holding tank volumes to krill biomass indicated that a ...

   Meeting Document : WG-EMM-18/22 : Auteur(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad

2. The effects of global climate variability in pup production of Antarctic fur seals

   range in scale from those that impact individuals to those that impact the entire food web. Climate ... -induced changes in the abundance of species in lower trophic levels can cascade up to apex predators by ... remain largely unexplored. We investigated the delectability, limits, and nonlinearity of changes in ... Antarctic fur seal pup production at South Georgia over a 20-year period in response to environmental ...

   Meeting Document : WG-EMM-06/P2 : Auteur(s): J. Forcada, P.N. Trathan, K. Reid and E.J. Murphy (United Kingdom)

3. Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation

   Abstract:  In this study, otolith microstructure analysis on 7 blue phase fingerlings and 26 brown ... phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ... timings and to validate annulus formation. Although in the literature it has been reported that N. rossii ... in the South Shetland Islands hatches in spring, our daily ring back counting in otoliths from the ...

   Meeting Document : WG-FSA-12/04 : Auteur(s): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)

4. CPUEs and body length of Antarctic krill during 1991/92 season in the fishing grounds north of Livingston Island

   dominant in catches, ca. 5mm smaller than those for the previous season. Author(s):  T. Ichii (Japan) Title ... Abstract:  This paper summaries Japanese krill catch data during austral summer in 1991/92 season ... :  CPUEs and body length of Antarctic krill during 1991/92 season in the fishing grounds north of ...

   Meeting Document : WG-KRILL-93/25 : Auteur(s): T. Ichii (Japan)

5. Poor breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   were reduced. These findings contrast with observations in 1994-95 Ca season in which all chicks ... Island during 1998-99, a season of high chick mortality. One thousand nests perished in the three weeks ... nests compared to previous "good" seasons in which between 1200 and 1800 chicks crèched on the ... adult birds spending longer at sea foraging than in normal years. In most previous seasons birds have ...

   Meeting Document : WG-EMM-99/25 : Auteur(s): L. Irvine, J.R. Clarke and K.R. Kerry (Australia)

6. Demersal fish communities in the Ross Sea region of Antarctica: comparisons between video and trawl survey methods

   . Using data collected during a survey of demersal fish communities in the Ross Sea region of Antarctica ... demersal trawl were consistently lower than for the other methods. Macrourus spp. grenadiers were ca. eight ... times less abundant in the demersal trawl than the video data but more large individuals were sampled by ... result from size-specific depth preferences in Macrourus spp. and conclude that video and trawl methods ...

   Meeting Document : WG-FSA-12/51 : Auteur(s): D.A. Bowden, S.M. Hanchet and P.M. Marriott (New Zealand)

7. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

   . Penguin foraging areas were formed in inshore region, where krill frequently occurred but higher density ... areas of krill (≥250g/m2) were rather limited. In contrast, fur sea! foraging areas were formed in ... offshore region, where krill occurred only occasionally but they tended to form extensive aggregations (ca ... . 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ...

   Meeting Document : WG-KRILL-92/27 : Auteur(s): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)

8. What’s the catch? Profiling the risks and costs associated with marine protected areas and displaced fishing in the Scotia Sea

   of fishing effort from closed areas, which may result in new and unexpected consequences for both ... fisheries and the ecosystem. Understanding such outcomes is critical in the Southern Ocean, where MPAs are ... evaluated two MPA scenarios and associated displacements of the Antarctic krill fishery in the Scotia Sea by ... closed areas included ca. 80% of predator foraging distributions, but differences between the scenarios ...

   Meeting Document : WS-SM-18/P03 : Auteur(s): E.S. Klein and G.M. Watters

9. COLLAPSE OF SOUTH AFRICA’S PENGUINS IN THE EARLY 21ST CENTURY

   Abstract:  The number of African penguins Spheniscus demersus breeding in South Africa collapsed ... from about 56 000 pairs in 2001 to some 21 000 pairs in 2009, a loss of 35 000 pairs (>60%) in eight ... classification of the species as Endangered. In South Africa, penguins breed in two regions, the Western Capeand ... Algoa Bay (Eastern Cape), their breeding localities in these regions being separated by c. 600 km. Their ...

   Meeting Document : WG-EMM-11/P8 : Auteur(s): R.J.M. Crawford, R. Altwegg, B.J. Barham, P.J. Barham, J.M. Durant, B.M. Dyer, D. Geldenhuys, A.B. Makhado, L. Pichegru, P.G. Ryan, L.G. Underhill, L. Upfold, J. Visagie, L.J. Waller and P.A. Whittington

10. A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2014–15

    biological characteristics of the catch of Antarctic toothfish up to and including the 2015 season. In 2015 ... distributed across the three SSRUs (73% in 88.1H, 22% in 88.1K and 5% in 88.1I). As in recent years, the ... changes in CPUE that were not consistent with biologically driven changes in abundance and are considered ... not to be indexing abundance. Length frequency distributions of Antarctic toothfish in the Ross Sea ...

    Meeting Document : WG-FSA-15/36 : Auteur(s): K. Large, S.M. Hanchet and S. Mormede (New Zealand)

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