Результаты поиска
-
The importance of sea ice association of Antarctic krill for transport and retention in the South Orkneys region: a modelling study
Antarctic krill in CCAMLR Area 48. The local krill populations support krill-dependent higher predators and ... Orkney Islands lie in the seasonal sea ice zone. Sea ice is an important overwintering habitat for ... the local ecosystem dynamics in this key region requires greater understanding of the extent to which ... regional and local transport pathways to and in the South Orkneys region, and the residence time of krill ...
Meeting Document : WG-EMM-2019/21 : Автор(ы): S.E. Thorpe, E.F. Young, E.J. Murphy and A.H.H. Renner
-
How trophic dynamics of adult Antarctic krill Euphausia superba responses to the condition of no ice in the water during the winter: a case study at South Georgia?
Abstract: Understanding the variation in krill diet during winter is crucial to elucidate the ... overwintering of krill in the Southern Ocean. The information on trophic variation of krill under ice-free ... warming. Stable isotope analyses (15 N/ 14 N and 13 C/ 12 C) were utilized to explore the variation in ... Georgia. Stable isotope signatures indicated that there were no significant differences in δ 13 C and δ 15 ...
Meeting Document : WG-EMM-2019/P04 : Автор(ы): G.P. Zhu, H.T. Zhang, B. Deng and Q.Y. Yang
-
Spatial patterns of temporal relationships in the Southern Ocean
Abstract: Phytoplankton production during the austral summer in the Southern Ocean is known to be ... modelled variables and show that this covariance in time between the mixed layer depth (MLD), sea surface ... . Statistically significant spatial patterns in the covariance between MLD, SST and Chl-a show that the physical ... factors controlling phytoplankton production in the Southern Ocean change in a predictable manner. Well ...
Meeting Document : WS-BSO-07/5 : Автор(ы): M. Kahru and B.G. Mitchell (USA)
-
An unmanned aerial vehicle as a platform for aerial photography of land-based predator populations in Antarctica: specifications and suitability of the Aerosonde Mark III
land-based predators in Antarctica. Such surveys are likely to rely heavily on recent technological ... developments, such as satellites and unmanned aerial vehicles (UAVs), which may allow cost-effective survey in ... one such UAV, the ‘Aerosonde’, which is manufactured by Aerosonde™ in Melbourne, Australia. The ... advantages in this role would be long-distance capability and low noise levels. Its disadvantages include ...
Meeting Document : WG-EMM-03/50 : Автор(ы): L. Irvine and C. Southwell (Australia)
-
Mesoscale abundance of fish in a ‘box’ west of Elephant Island
Abstract: Germany, in close collaboration with the United States Antarctic Marine Living (U.S ... of Elephant Island (Subarea 48.1) in order to study the meso – scale abundance of demersal finfish ... species. Diversity in the box was relatively low. The most abundant species were Gobionotothen ... . Concentrations of both species were found in a comparatively small band primarily along the 200 m isobath (160 ...
Meeting Document : WG-FSA-02/21 : Автор(ы): K.-H. Kock (Germany), C.D. Jones (USA), J. Appel (Germany), G. von Bertouch (CCAMLR Secretariat), D.F. Doolittle (USA), M. la Mesa (Italy), L. Psenichnov (Ukraine), R. Riehl (Germany), T. Romeo (Italy), S. Schöling (Germany) and L. Zane (Italy)
-
Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 2000–2001
longline fishing for Patagonian toothfish Dissostichus eleginoides in South Africa’s Exclusive Economic ... Zone around the Prince Edward Islands. There was a slight increase in the number of fishing trips and ... hooks set in 1999/2000. The number of seabirds killed dropped dramatically from 268 in 1999/2000 to 76 ... in 2000/2001. White-chinned petrels Procellaria aequinoctialis accounted for 85.5% of the six species ...
Meeting Document : WG-FSA-01/61 : Автор(ы): P.G. Ryan and B.P. Watkins (South Africa)
-
Analysis of krill trawling positions in the area north of the South Shetland Islands (Antarctic Peninsula area) from 1980/81 to 1998/99
Abstract: Positions of commercial krill operation for 1980/81 season to 1998/99 season in the ... latitudes where operations were undertaken. Operations tended take place in the north in early 1980s, but ... from mid-1980 onwards, they tended to happen in the south, with exceptions of 1994/95 and 1995/96 ... seasons. Predicted latitudes of operation significantly correlated with Salp densities in the Elephant ...
Meeting Document : WG-EMM-00/58 : Автор(ы): S. Kawaguchi (Japan)
-
Off the hook? Initiatives to reduce seabird by-catch in longline fisheries
Abstract: The recent history of global initiatives to reduce seabird by-catch in longline ... fisheries are reviewed, highlighting in turn the activities of environmental and industry non-governmental ... , especially albatrosses and petrels, are affected, with unsustainable mortality rates in a number leading to ... population decreases. An International Plan of Action for Reducing Incidental Catch of Seabirds in Longline ...
Meeting Document : WG-FSA-99/6 : Автор(ы): J. Cooper (South Africa), J.P. Croxall (United Kingdom) and K.S. Rivera (USA)
-
Hatching season and growth of Pleuragramma antarcticum larvae near the Antarctic peninsula in austral summer 1993/94
Abstract: Hatching season and larval growth of Pleuragramma antacticum in the water off Antarctic ... Peninsula were determined by the examination of growth increments in otoliths. The samples were collected by ... (54 inds. out of 77 fish larvae) in ichthyoplankton samples, and occurred mainly in cold water of the ... otolith cores was about 50 μm in diameter. The width of the growth increments was narrow near the core ...
Meeting Document : WG-EMM-96/65 : Автор(ы): Cha, S.S., Lee, T.W., Kim, S.
-
Analysis of the stomach content in the blue-eyed shag Phalacrocorax atriceps bransfieldensis at Nelson Island, South Shetland Islands
at Nelson Island, South Shetland Islands, in January 1994. The analysis of the diet showed that fish ... , predominated in frequency (58%) and in weight (65%), whereas Nototheniops nudifrons was the most important by ... similar results. However, although the methodology used in the present study requires more time in the ... complemented with information on shags’ foraging trips, obtained in the field by film records. Author(s): N ...
Meeting Document : WG-CEMP-94/31 : Автор(ы): N. Coria, R. Casaux, M. Favero and P. Silva (Argentina)
Страницы
- « первая
- ‹ предыдущая
- …
- 230
- 231
- 232
- 233
- 234
- 235
- 236
- 237
- 238
- …
- следующая ›
- последняя »