Résultats de la recherche
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The applicability of international conservation instruments to the establishment of marine protected areas in Antarctica
, and thus include Antarctica within the scope of a worldwide system of marine protected areas. However ... or even impossible because of the area’s unique political situation and existing regimes. It is ... concluded that although direct application of other international conservation agreements is in most cases ... principles and requirements agreed under instruments with global purview. These include the formulation of ...
Meeting Document : WG-EMM-04/32 : Auteur(s): S. Grant (United Kingdom)
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Review of biological characteristics of the Antarctic toothfish (Dissostichus mawsoni) and its distribution in Antarctic waters
Abstract: Results of published studies on the biology, biomass and distribution of the Antarctic ... toothfish (Dissostichus mawsoni) were reviewed. The review focused on those aspect of the species which are ... of importance for the assessment of its biomass and identification of its stocks. The trophodynamics ... of D. mawsoni are mentioned only in brief. Most published materials refer to studies conducted in the ...
Meeting Document : WG-FSA-98/37 : Auteur(s): Secretariat
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Models of tag shedding for double tagging as a function of time at liberty and approximate solutions for the single tagging model in CASAL
Abstract: The model of tag shedding implicit in CASAL is that of Kirkwood and Walker (KW) (1984 ... present to correctly apply the KW model for fish released with two tags. The solution of Dunn et al. (2005 ... ) and Hillary et al. (2006) to apply the square of the individual tag loss annual rate in CASAL over ... -estimates the correct proportion of fish that have retained at least one tag, and are therefore detectable ...
Meeting Document : WG-SAM-11/12 : Auteur(s): S.G. Candy (Australia)
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PRELIMINARY REPORT OF THE NEW ZEALAND RV TANGAROA IPY-CAML SURVEY OF THE ROSS SEA REGION, ANTARCTICA IN FEBRUARY-MARCH 2008
Ross Sea region in support of the International Polar Year Census of Antarctic Marine Life (IPY-CAML ... ). The 50 day voyage on the research vessel Tangaroa involved an extensive survey of marine organisms ... from viruses to pelagic and demersal fish and cephalopods from the surface down to depths of 3500 m ... , and from the continental shelf and slope of the Ross Sea to unexplored seamounts and abyssal plains ...
Meeting Document : WG-EMM-08/18 : Auteur(s): S.M. Hanchet, J. Mitchell, D. Bowden, M. Clark, J. Hall, R. O’Driscoll, M. Pinkerton and D. Robertson (New Zealand)
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Towards an assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea: data from predators
exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ... squid is an important component of the diet of several species of albatross and the southern elephant ... % of which is taken by southern elephant seals, and the other species may take at least a further 51400 ... 308016 tonnes per year. The proportion of total annual production of Martialia taken by predators cannot ...
Meeting Document : SC-CAMLR-IX/BG/13 : Auteur(s): Delegation of United Kingdom
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Effects of different harvesting strategies on the stock of Antarctic icefish Champsocephalus gunnari around South Georgia
Abstract: The effects of a number of harvesting strategies on the Antarctic icefish ... Champsocephalus gunnari have been simulated for a period of 30 years. These were- diffierent levels of constant ... fishing mortality (F0.1, Fmax, 2xFmax),- harvesting contantly at 50%F0.1 with an increase of F 3 or 6 ... years after a good recruitment,- pulse fishing at an interval of 3 years with no fishing in between;- a ...
Meeting Document : SC-CAMLR-VIII/BG/47 : Auteur(s): Delegation of Federal Republic of Germany
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The Use of Penguin Stomachal Contents for the Simultaneous Study of Prey and Predator Parameters
assumptions made in the analysis of data. Nested designs are proposed as the correct approach because lack of ... independence between krill found in the stomach of a given penguin prevents the pooling of krill lengths from ... highly significant linear regression between krill size and time was found. Full use of the information ... contained in stomachal contents requires the use of block sampling designs. Replicating samples of the same ...
Meeting Document : WG-CEMP-89/16 : Auteur(s): E. Marschoff and B. González (Argentina)
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The State of Exploited Fish Stocks in the Atlantic Sector of the Southern Ocean in 1988
Abstract: Finfish have been harvested in the Atlantic sector of the Southern Ocean since the end ... of the 1960s by the Soviet Union mainly. Notothenia rossii marmorata was the target species in the ... guntheri. Catches of C. gunnari peaked at about 240,000, 220,000 and 100,000 tonnes in 1976-78, 1982-84 and ... Georgia is less than 5 % of the pristine level at present. Recruitment has dropped since the second half ...
Meeting Document : WG-FSA-88/14 : Auteur(s): K.-H. Kock and F.-W. Köster (FRG)
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Recent trends in numbers of four species of penguins at the Prince Edward Islands
Abstract: Four species of penguin breed regularly at South Africa’s Prince Edward Islands: king ... pairs of king penguins were incubating eggs at Marion Island, the larger of the two islands in the group ... in numbers of king penguin chicks that survived to the end of the winter period, but there was ... considerable fluctuation in chick production in the 1990s. It was roughly estimated that on average 88% of king ...
Meeting Document : WG-EMM-10/P01 : Auteur(s): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper
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Feasibility of lead-radium dating the otoliths of blackfin icefish (Chaenocephalus aceratus) and ocellated icefish (Chionodraco rastrospinosus)
Abstract: Application of lead-radium dating was attempted as a feasibility study for otoliths of ... otoliths from these fishes were small and the number of otoliths available low, a whole otolith application ... determining the parameters of future applications that would lead to a validation of age. In the current study ... levels, led to age determinations that had a high margin of uncertainty; however, the findings led to an ...
Meeting Document : WG-FSA-10/17 : Auteur(s): A.H. Andrews, M. La Mesa and J. Ashford (USA)