Resultados de la búsqueda
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Reconciling theoretical versus empirical target strengths of krill; effects of phase variability on the distorted wave Born approximation
Abstract: A model was recently proposed to predict the target strengths (TS) of Antarctic krill ... ]. Based on the distorted wave Born approximation (DWBA), the model depends upon the coherent summation of ... broadside incidence (?? 90°), but large discrepancies were observed at other angles away from the main lobe ... . As the side-lobe measurements were both higher than the model predictions and above the noise floor ...
Meeting Document : WG-EMM-02/50 : Autor(es): D.A. Demer and S.G. Conti (USA)
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The fishery for Champsocephalus gunnari and its biology at Heard Island (Division 58.5.2)
Abstract: Commercial trawl fisheries in the modern era started within the Heard Island EEZ in ... 1997. This paper summarises the fishing activities to date and collates the information on the biology ... of the species gathered from the fishery and from a series of fishery-independent surveys conducted ... between 1990 and 2000. Icefish abundance varies widely between years and the fishery is dependent on ...
Meeting Document : WAMI-01/04 : Autor(es): R. Williams, E. van Wijk, A. Constable and T. Lamb (Australia)
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ON THE STUDY OF FECUNDITY AND EGGS SIZE OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI NORMAN 1937
Abstract: The results of the microscopic analyses of the Antarctic toothfish (Dissostichus ... mawsoni) fecundity and eggs size, caught in December-March the Pacific and Indian Ocean area of the ... Antarctica are presented. We analyzed the main reproductive characteristics which determinate the individual ... fecundity of the Antarctic toothfish: individual absolute fecundity by the largest oocytes, share of largest ...
Meeting Document : WG-FSA-08/35 : Autor(es): S.V. Piyanova. A.F. Petrov and N.V. Kokorin (Russia)
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Changes in population size of large Procellariiformes breeding in the French sub-Antarctic islands: potential influence of southern fisheries and particularly long lining
Abstract: Studies carried out over the past three decades in the French austral territories ... indicate that these declines are mainly the result of increased adult mortality. This high rate of ... mortality has been suspected to be the result of mortality incurred in long-line fisheries. Satellite ... outside the breeding season these populations are in contact with long-line fisheries, mainly the pelagic ...
Meeting Document : WG-IMALF-94/11 : Autor(es): Henri Weimerskirch and Pierre Jouventin (France)
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APPLICATION TO UNDERTAKE WINTER SCIENTIFIC RESEARCH IN CCAMLR SUBAREA 88.1 (SSRUS 88.1B, 88.1C AND 88.1G) IN THE 2008/09 SEASON
Abstract: New Zealand proposes to conduct a scientific research survey during the austral winter ... in CCAMLR SSRUs 88.1B, 88.1C and, ice permitting, 88.1G in 2008/09, as the first in a three year time ... series. The proposal is for a targeted longline survey designed to cover critical gaps in the knowledge ... of the life cycle of D. mawsoni in the Ross Sea by collecting biological samples from a broad spread ...
Meeting Document : WG-FSA-08/62 : Autor(es): Delegation of New Zealand
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Squalus acanthias – a new species in the Antarctic ichthyofauna (Division 58.5.1)
Abstract: Four species of shark have been known to date to occur in the sub-Antarctic waters ... was captured in February 1995 on the shelf of the Kerguelen Islands from the depth of about 195 m and ... duly described. Squalus acanthias is believed to be one of the most widespread shark species in the ... World Ocean. The fact of capturing this species in the Kerguelen waters enlarges by far its range and ...
Meeting Document : WG-FSA-96/14 : Autor(es): Pshenichnov, L.K.
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Water mass distribution and circulation west of the Antarctic peninsula and including Bransfield Strait
Abstract: Historical hydrographic data from Bransfield Strait and the region west of the ... 34.6 to 34.73 and oxygen values below 4.5 ml 1-1, is the most prominent water mass in this region, is ... found between 200 and 700 m, and is present in all seasons throughout the region examined. Below 200 m ... this water mass floods the continental shelf west of the Antarctic Peninsula. CDW is also found in ...
Meeting Document : WG-EMM-95/67 : Autor(es): Smith, D.A., Lascara, C.M., Klinck, J.M., Hofmann, E.E.
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Further calculations of the effects of krill fishing on predators
Abstract: Earlier initial modelling attempts by the authors are extended to consider the ... achieved by making the survival rates depend instead on krill "availability", where there is a ... random component in the relationship between krill biomass and availability. An examination of the ... consequences in the case of the blackbrowed albatross suggest that these other factors result in yet lesser ...
Meeting Document : WG-Krill-94/24 : Autor(es): D.S. Butterworth and R.B. Thomson (South Africa)
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Plan of research program of the Russian Federation in Subarea 48.5 (Weddell Sea) in season 2014/2015
Abstract: Closed mostly within the Weddell Sea Subarea 48.5 is one of the closed data-poor CCAMLR ... subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... Weddell Sea during most time of the year, this large water area is very similar with the Ross Sea. This ... from results of the fist and the second stage of this program, highlight the Weddell Sea as one of the ...
Meeting Document : WG-SAM-14/07 : Autor(es): Delegation of the Russian Federation
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Surface exchange between the Weddell and Scotia Seas
Abstract: Within Drake Passage, the southern flank of the Antarctic Circumpolar Current (ACC ... ) hosts the ventilation of deep water, the injection of Antarctic shelf waters and interactions between ... westward and eastward boundary cur rents. This exchange is explored through the trajectories of forty ... surface drifters released in January 2012 in the northwestern Weddell Sea. The drifters detail Lagrangian ...
Meeting Document : WG-EMM-14/P03 : Autor(es): A.F. Thompson and M.K. Youngs