Resultados de la búsqueda
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Population and breeding of the gentoo penguin Pygoscelis papua at Marion Island, 1994/95 to 2002/03
Abstract: The numbers of gentoo penguins Pygoscelis papua breeding at subantarctic Marion Island ... 1998/99, there was a steady decrease in numbers breeding between 1995/96 and 2000/01, when the ... increased the overall production of fledged chicks by 11%. Based on demographic parameters measured at other ... localities, the production of chicks at Marion Island was inadequate to maintain the population during the ...
Meeting Document : WG-EMM-03/16 : Autor(es): R.J.M. Crawford, J. Cooper, M. du Toit, M.D. Greyling, B. Hanise, C.L. Holness, D.G. Keith, J.L. Nel, S.L. Petersen, K. Spencer, D. Tshingana and A.C. Wolfaardt (South Africa)
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Larval fish distribution and abundance of the western Ross Sea
carried out in the western Ross Sea in November-December 1994. The present study focused on improvement of ... the knowledge of the larval fish community in relation to its distribution and relative abundance. A ... abundance of larval fish in the whole area was about 2.7 specimens / 1000 m3 of sea water filtered. The ... Chionodraco sp. It was noteworthy the high number of Trematomus lepidorhinus (570 larvae) found in a single ...
Meeting Document : WG-FSA-95/11 : Autor(es): Greco, S., la Mesa, M., Vacchi, M.
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Modelling the impact of fishery by-catches on albatross populations
parameters in the model. 3. The model used two alternative assumptions about patterns of at-sea distribution ... -catch in longline fisheries and this mortality has been implicated in the population declines. 2. We ... developed a deterministic, density-dependent, age-structured model for assessing the effects of longlining ... of wandering albatross (uniform between 30°S–60°S; proportional to the distribution of longline ...
Meeting Document : WG-FSA-01/18 : Autor(es): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)
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The fish diet of black-browed albatross Diomedea melanophrys and grey-headed albatross D. chrysostoma at South Georgia
60% by mass of the diet of grey-headed albatrosses in 1986 and 1994 respectively. We determined the ... (40% estimated biomass), whereas in 1994 Pseudochaenichthys georgianus was the main fish prey (57% of ... from the commercial fishery, which was active in 1986 but closed in 1994. Otherwise the fish diet of ... Abstract: The fish component of the diet of black-browed and grey-headed albatrosses at South ...
Meeting Document : WG-EMM-96/11 : Autor(es): Reid, K., Prince, P.A., Croxall, J.P.
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METHODOLOGY OF EVALUATING THE AQUATIC LIFE RESOURCES
applied in the proposed technique offer the mean integral values of probabilities. It is recommended to ... Abstract: ic life is developed in accordance with the rules of metrology, mathematical statistics ... water life was investigated through biocenotic conditionality in the areas of their equal probability in ... concentrations. The traditional method of squares in evaluating the stocks of water life was modernized with the ...
Meeting Document : WG-SAM-08/P02 : Autor(es): L.A. Kovalchuk (Ukraine)
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OCCURRENCE OF DWARF MINKE WHALES (BALAENOPTERA ACUTOROSTRATA SUBSP) AROUND THE ANTARCTIC PENINSULA
made only for the whales sighted in the proximity of the vessels when the specific diagnostic ... Abstract: The occurrence of dwarf minke whales (Balaenoptera acutorostrata subsp.) around the ... Antarctic Peninsula was examined based on 406 sightings of minke whales recorded during the Chilean ... Antarctic Scientific Expeditions and other opportunistic cetacean surveys. Identification of the species was ...
Meeting Document : WG-EMM-11/P2 : Autor(es): J. Acevedo, C. Olavarría, J. Plana, A. Aguayo-Lobo, A. Larrea and L.A. Pastene
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PROTECTING THE SOUTHERN OCEAN WHALE SANCTUARY: DEVELOPMENT OF A MANAGEMENT PLAN
Abstract: ASOC submitted a paper to the June meeting of the International Whaling Commission in ... updated version of the paper, which is now in circulation to all of the governments participating in the ... Santiago outlining the reasons why the IWC, in concert with CCAMLR and other appropriate international ... as an Opening Statement in accordance with IWC rules. Following the IWC meeting, ASOC prepared an ...
Meeting Document : CCAMLR-XXVII/BG/29 : Autor(es): Submitted by ASOC
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Extending the time series of catch-weighted length frequencies
use of CCAMLR data for D. eleginoides in Subarea 48.3 collected in the seasons 1992/93 and from 1994 ... from 1993/94 because of a mismatch in Flag State which presently occurs between the length and catch ... extended the existing time series of catch-weighted length frequencies for D. eleginoides in Subarea 48.3 ... an overlap of seasons. However there is a systematic difference in the overall number of fish ...
Meeting Document : WG-FSA-SAM-06/04 : Autor(es): David Ramm & Lydia Millar
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Spatial distribution and swarm characteristics of Antarctic krill around the South Shetland Islands
majority of swarms were also found in the upper 100 m layer. The swarm-based method provides a promising ... as swarms in a patchy fashion and the mean krill densities in December 2013 and February 2018 were ... Abstract: The spatial distribution and swarm characteristics of Antarctic krill were studied ... using the swarm-based method established in SG-ASAM-17. Acoustic data were collected from the FV Fu Rong ...
Meeting Document : WG-EMM-18/42 : Autor(es): X. Yu, X. Wang and X. Zhao
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Acquiring a ‘base datum of normality’ for a marine ecosystem: the Ross Sea, Antarctica
researchers who currently investigate open-ocean systems. Herein, the importance of top-down forcing in ... current functioning of the RSShelfE. In spite of this unique evidence for the Antarctic region, much ... pelagic and neritic marine ecosystems is reviewed with concrete evidence given for its existence in the ... remains to be learned about cross-component interactions in the Ross Sea system. Should the RSShelfE be un ...
Meeting Document : WG-EMM-04/20 : Autor(es): D. Ainley (USA)