Resultados de la búsqueda
-
Pleuragramma antarcticum distribution in the Ross Sea during late austral summer 2013
Abstract: Research during the last decade has revealed much about the early life history of ... the central Ross Sea and one location in the far south of the eastern Ross Sea (in the Bay of Whales ... cruise supports growth rates and hatching times consistent with reported hatching events in Terra Nova ... , suggesting the presence of a potential eastern Ross Sea nursery ground. This late hatching period may be ...
Meeting Document : WG-EMM-14/38 : Autor(es): C. Brooks and K. Goetz (USA)
-
Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
middle of the past century and the recovery of krill-eater large whales since the 1980’s. There was an ... Antarctica (70°E-170°W) showed that the increased krill availability in the middle of the past century could ... in energy storage and stomach content weight since the 1980’s. This observation is consistent with ... recruitment is consistent with the total abundance of Antarctic minke whale estimated by sighting surveys ...
Meeting Document : WG-EMM-16/64 : Autor(es): Y. Fujise and L.A. Pastene
-
Beach debris survey – Main Bay, Bird Island, South Georgia 1996/97
use. The reduction in man-made debris compared to the two previous years may reflect a reduction in ... Abstract: The seventh year of surveys of beached man-made debris at Bird Island, South Georgia ... revealed a total of 289 items, 60 % less than in the two previous years. Of the total number of items, 62 ... monitoring and the need for further steps to counteract the jettisoning of man-made debris in the Southern ...
Meeting Document : CCAMLR-XVII/BG/7 : Autor(es): Delegation of the United Kingdom
-
Diet and prey consumption of Antarctic petrels Thalassoica antarctica at Svarthamaren, Dronning Maud Land and at sea outside the colony
Abstract: The diet of the Antarctic petrel Thalassoica antarctica was studied during two years at ... %), followed by fish (29%) and squid (3%), whereas individuals collected in the pack ice took mostly fish (95 ... at Antarctic petrels from Svarthamaren may fly more than 3,000 km during one foraging trip and may ...
Meeting Document : WG-EMM-97/58 : Autor(es): Røv, N., Lorentsen, S., Klages, N.
-
Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
probably 3+ and older (mean size 49.5 mm); cluster 4 and 5 were small krill, mostly year 1 + either with or ... types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... size 39.7 mm); cluster 2 were a mixture of year classes (mean size 37.7 mm); cluster 3 were large krill ... cruises and look particularly at differences between krill taken from the eastern and western ends of the ...
Meeting Document : WG-EMM-97/47 : Autor(es): Daly, H.I., Murray, A.W.A., Watkins, J.L.
-
The migration patterns of Electrona carlsbergi (Tåning, 1932)
mature specimens 8.5-11 cm in length and 3-5 years old increases. Based on the dynamic processes of the ... sectors of Antarctica E. carlsbergi is represented by immature specimens 7 to 8 cm in length and 2 years ... the early stages of its life cycle, a theory has been put forward concerning the presence in the notal ... region and various sectors of Antarctica of several reproductive zones coinciding with areas of large ...
Meeting Document : WG-FSA-93/18 : Autor(es): A.N. Kozlov (Russia)
-
Antarctic neritic krill Euphausia chrystallorophias: spatio-temporal distribution, growth and grazing rates
Prydz Bay region. Size frequency analysis indicated that the generation time was ~ 3 years in the Indian ... sector of the Southern Ocean. Total life span of E.crystallorophias may exceed 5 years in the Prydz Bay ... region and 4 years in the Cosmonaut Sea. Analysis of size distribution by sex showed that male ... early December and may extend to the beginning of January. Most larvae were in the stage of metanauplius ...
Meeting Document : WG-Joint-94/10 : Autor(es): E.A. Pakhomov (Ukraine) and R. Perissinotto (South Africa)
-
Analysis of trawl data from the South Georgia krill fishery
large number of trawls were undertaken by each,vessel, with trawls being shorter in duration during the ... middle of the day. Daytime trawls were also generally deeper and produced a larger catch. Individual ... with shooting and hauling the net were usually short and showed little variation, whereas the time ... associated with the actual trawl phase was longer and more variable. The distance between consecutive trawls ...
Meeting Document : WG-EMM-97/41 : Autor(es): Parkes, G., Trathan, P.N., Everson, I., Murphy, E.J.
-
Beach debris survey – Main Bay, Bird Island, South Georgia 2000/01
Abstract: During the eleventh year of standardised beach surveys of man-made debris at Bird ... the lowest since reporting began, with only 4 items more collected in the summer than in the winter ... ), but to a lesser extent than in previous years, whilst miscellaneous debris accounted for almost as ... decrease levels, and ensure compliance with the correct waste disposal procedures for both domestic and ...
Meeting Document : SC-CAMLR-XXI/BG/03 : Autor(es): Delegation of the United Kingdom
-
Report on fish by-catch during research fishing activities in Division 58.4.4b between 2008 and 2018
Abstract: We report on objective 3 “Investigate population structure of bycatch species and ... catch ratio of about 15%, autolines ratio was up to 70% in some years. Hence, bycatch number and biomass ... increased strongly in the years autolines operated. Skate bycatch was higher in the b_2 region, particularly ... in the eastern part, where unusually high concentrations of Pennatulacea (Sea pens) where reported in ...
Meeting Document : WG-FSA-2019/53 : Autor(es): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier