Résultats de la recherche
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A balanced trophic model of the ecosystem of the Ross Sea, Antarctica, for investigating effects of the Antarctic toothfish fishery
Abstract: We report on the development of a mass balanced carbon-budget trophic model of the Ross ... Sea with which to investigate effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). A ... survey of the available literature provided an initial set of parameters describing the abundance ... (diets, predators) for major groups of biota. We also estimated the level of uncertainty on these ...
Meeting Document : WG-EMM-07/18 : Auteur(s): M.H. Pinkerton, S.M. Hanchet and J. Bradford-Grieve (New Zealand)
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A GIS tool to assist in the planning and design of sample surveys of the abundance of colonial breeding species
the example the tool is used to sample a population of Adelie penguins in the Holme Bay region of East ... Abstract: A GIS tool to assist in the planning and designing of surveys of colonial breeding ... species is described. The tool could be applied to any region of Antarctica given available colony map and ... developed to implement more complex and efficient designs. An example of its potential use is provided. In ...
Meeting Document : WG-EMM-05/25 : Auteur(s): C. Southwell, R. Dreissen, S. Candy, G. McPherson and J. Clarke (Australia)
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COMPARISON OF THE PRECISION OF DIRECT VERSUS AGE LENGTH KEY METHODS OF ESTIMATING CATCH-AT-AGE PROPORTIONS
estimation of spawning stock biomass, may more than compensate for the slight loss of precision for the ... ) of fish in the catch, determining the ages in the sample, and calculating proportions in each age ... to the SRS of ages, which have also been measured for length (the age-length sample), a large SRS ... by length bin estimated from the LF sample by the conditional probability of age given length bin ...
Meeting Document : WG-FSA-09/22 Rev. 1 : Auteur(s): S.G. Candy (Australia)
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Variation of ice edge position in western part of Atlantic sector of the Antarctic
position was found to increase from the west to the east. Described is two-year cyclicity of consecutive ... Abstract: Satellite imagery of the pack ice edge position in western part of the Atlantic sector ... of the Antarctic derived on each tenday period basis has been used to analyse its spatial and ... temporal variation in the area between 65° and 20°W. Amplitude of the seasonal variation of the ice edge ...
Meeting Document : SC-CAMLR-VIII/BG/49 : Auteur(s): Delegation of USSR
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On problem of natural subdividing of Antarctic krill’s geographic area (an application to the monitoring of fishing)
Abstract: The possibilities of natural regionisation of antarctic krill's geographic area ... with emphasis on fisheries regions distribution are considered on the base of consisting data of ... spatial structure of krill's geographic area. More then 43% of regions, where usually present ... concentrations of krill (this percent includes all recently acting fishery regions) lay inside of secondary ...
Meeting Document : WG-KRILL-93/37 : Auteur(s): R.R. Makarov and L.L. Menshenina (Russia)
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To the problem of assessment of probability of finding Antarctic krill concentrations in Division 58.4.2
Abstract: In 1994 the group of above mentioned authors has completed the first stage of ... researches for creation of an imitation model of krill distribution and search in the Cooperation and ... Cosmonauts Seas (30–80°E). At this the following main problems were addressed:- Systematization of krill ... echograms (types of aggregations, their main characteristics),- Assessment of distribution of aggregations ...
Meeting Document : WG-Krill-94/7 Rev. 1 : Auteur(s): V.N. Yakovlev, V.A. Bibik and L.M. Kokoz (Ukraine)
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Long-term forecast of the conditions of krill (Euphausia superba Dana) fisheries in the Antarctic part of the Atlantic Ocean
Abstract: There have been revealed possibilities for the long-term forecast of CPUE for the ... Antarctic krill (tones per hour) as the major indicator of its abundance and density of concentrations in ... the area of South Shetland and South Orkney Islands as well as South Georgia applying the following ... factors: average annual level of solar activity, speed of the Earth rotation and its derivatives ...
Meeting Document : WG-EMM-07/15 : Auteur(s): V.A. Bibik and V.A. Bryantsev (Ukraine)
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Diurnal changes of some biological characteristics of Euphausia superba Dana in swarms (westward of the South Orkney Islands, 24 March to 18 June 1990 - based on data reported by biologist-observer)
Abstract: Investigations of diurnal changeability of size composition of E. superba was carried ... out during the working period of commercial trawler ‘Grigory Kovtun’ in the fishing area near the ... station consisted of series of catches by mean the usual commercial trawl (9-12 tows per every station ... ). Increasing of average size of animals during light time was observed at several stations. These changes are ...
Meeting Document : WG-KRILL-92/09 : Auteur(s): A.V. Vagin, R.R. Makarov and L.L. Menshenina (Russia)
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The integrated Antarctic expedition of the YugNIRO in the season of 1989–1990: main results of the ichthyological studies
Ocean sector of the Antarctic in the season of 1989-1990, information is presented in this paper on ... ichthyofauna, size–weight composition and main parameters of the biological state of the more abundant fishes ... taken on the shelf of Antarctica, at Ob and Lena Seamounts (referred to as Banks in the Russian usage ... ), and in the zone of the Southern Polar front. In the shelf area, of Cooperation Sea, localities of ...
Meeting Document : WG-FSA-90/39 : Auteur(s): A.K. Zaitsev, V.G. Prutko and V.N. Yakovlev (YugNIRO, USSR)
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An initial analysis of the characteristics of Antarctic krill taken by the commercial fishery and Antarctic fur seals during the winters of 2002 and 2003 at South Georgia
Abstract: We present an initial analysis of the fishing locations, fishing depth and length ... -frequency distribution of krill at South Georgia during the winter of 2002 and 2003 and compare these with ... the length-frequency distribution and frequency of occurrence of krill in the diet of Antarctic fur ... seals. There were significant differences in the mean size of krill taken by vessels/measured by ...
Meeting Document : WG-EMM-04/62 : Auteur(s): K. Reid, D.J. Agnew, N.L. Warren and E. Owen (United Kingdom)