Resultados de la búsqueda

1. Population, breeding, diet and conservation of Crozet shag Phalacrocorax [atriceps] melanogenis at Marion Island, 1994/95 to 2002/03

   birds breeding in any given season. The decreases coincided with a period of warming and reduced ... precipitation at Marion Island and with a decrease in the number of gentoo penguins Pygoscelis papua breeding ... 25% of the mature population did not breed in 1997/98, coincident with a strong El Niño Southern ...

   Meeting Document : WG-EMM-03/17 : Autor(es): R.J.M. Crawford, J. Cooper, B.M. Dyer, A.C. Wolfaardt, D. Tshingana, K. Spencer, S.L. Petersen, J.L. Nel, D.G. Keith, C.L. Holness, B. Hanise, M.D. Greyling and M. du Toit (South Africa)

2. Is population structure of Patagonian toothfish (Dissostichus eleginoides) determined by the Antarctic Circumpolar Current?

   island groups with little energetic cost, and may constrain movement in other directions, influencing ... evidence suggests that, consistent with the dynamic-physical structure of the ACC, toothfish off the ... stocks at South Georgia and Kerguelen may be connected. Taken with the published genetic data, this ...

   Meeting Document : WG-FSA-03/84 : Autor(es): J.R. Ashford, C.M. Jones, E. Hofmann (USA), I. Everson (United Kingdom) and G. Duhamel (France)

3. Acoustic discrimination of southern ocean zooplankton

   upper 250 m of the water column. These layers were fished with a LonghurstHardy plankton recorder (LHPR ... originating from Antarctic krill Euphausia superba, with an overall correct classification rate of 77%. We ... therefore demonstrate that with the use of echo intensity data alone, gathered using hardware commonly ...

   Meeting Document : WG-EMM-97/54 : Autor(es): Watkins, J.L., Brierley, A.S., Goss, C., Ward, P.

4. A revised assessment of the impact of the krill fishery on penguins in the South Shetlands

   antarctica) are closely associated with areas where sea-ice disappears earlier in spring, not necessarily ... with areas of high krill abundance. The overlap between trawling depth and foraging dive depth of ... preferred fishing areas during the breeding season. Compared with the level of biomass (≥200 xl03 tonnes ...

   Meeting Document : WG-Joint-94/17 : Autor(es): T. Ichii, M. Naganobu and T. Ogishima (Japan)

5. Diving pattern and performance in nonbreeding gentoo penguins (Pygoscelis papua) during winter

   , and compared foraging behavior with that of breeding (chick-rearing) birds. Foraging was highly ... diurnal with 98% of foraging trips completed during the same day. Foraging-trip frequency was 0.8/day ... patterns, averaging 10-20 m at dawn and dusk and 70-90 m at midday. These results are consistent with the ...

   Meeting Document : WG-CEMP-92/37 : Autor(es): T.D. Williams (United Kingdom), A. Kato (Japan), J.P. Croxall (United Kingdom), Y. Naito (Japan), D.R. Briggs, S. Rodwell and T.R. Barton (United Kingdom)

6. Larval development and spawning ecology of euphausiids in the Ross Sea and its adjacent waters in 2004/05

   juvenile or adult stages. Eggs and larvae of E. superba occurred with gravid females along the slope, but ... the more northern species with the exception of E. crystallorophias, which recruited before E. superba ... . The intense spawning of E. crystallorophias and E. superb coincided with a period of development of a ...

   Meeting Document : WG-EMM-10/P06 : Autor(es): K. Taki, T. Yabuki, Y. Noiri, T. Hayashi and M. Naganobu

7. Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia

   occurred in 80% of fur seal diet samples, with fish remains in 37% of samples. Penguin diets contained the ... Electrona antarctica), with krill (33%) and amphipods (Themisto gaudichaudii; 21%) also occurring. When ... South Georgia, consistent with an area of high macrozooplankton biomass, but fur seals were apparently ...

   Meeting Document : WG-EMM-10/P07 : Autor(es): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan

8. Decadal trends in abundance, size and condition of Antarctic toothfish in McMurdo Sound, Antarctica, 1972–2011

   then decreased. Fish length positively correlated with Ross Sea ice extent in early spring, a ... the study area. Fish condition positively correlated with the amount of open water in the Ross Sea ... during the previous summer (Feb), perhaps reflecting greater availability of prey with the higher ...

   Meeting Document : WG-FSA-12/P04 : Autor(es): D.G Ainley, N. Nur, J.T Eastman, G. Ballard, C.L Parkinson, C.W Evans and A.L. DeVries

9. The annual random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the Heard Island region (Division 58.5.2) for 2012

   RSTS were generally high in comparison with previous years, with the total fish catch being twice as ... for coral, with a reported catch of 0.6 t, being significantly greater than the long term average (50 ...

   Meeting Document : WG-FSA-12/25 : Autor(es): G.B. Nowara and T. Lamb (Australia)

10. Foraging zones of the two sibling species of giant petrels in the Indian Ocean throughout the annual cycle: implication for their conservation

    higher than interspecific ones, with females showing a greater distribution range than males in both ... months. These results have important conservation implications, with males and females facing different ... more likely to overlap with high sea longlining such as tuna fisheries. Author(s):  L. Thiers, K ...

    Meeting Document : WG-FSA-12/67 : Autor(es): L. Thiers, K. Delord, C. Barbraud (France), R.A. Phillips (United Kingdom) and H. Weimerskirch (France)

Páginas