Resultados de la búsqueda
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A balanced model of the food web of the Ross Sea, Antarctica
recent year (1990–2000). The focus of the model is on the role of Antarctic toothfish in the food web ... Paper Title: A balanced model of the food web of the Ross Sea, Antarctica Abstract / Description ... : A quantitative food web of the Ross Sea is presented here as a step towards investigating ecosystem ... effects of the fishery for Antarctic toothfish (Dissostichus mawsoni). The model consolidates quantitative ... consistency. The model has 38 trophic groups and is balanced in terms of annual flows of organic carbon in an ... average recent year (1990–2000). The focus of the model is on the role of Antarctic toothfish in the food ... %), components of the model. Trophic levels are in close agreement with those derived from isotope and other ... establish monitoring of medium and small demersal fishes in the Ross Sea, and to model potential changes to ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Autor(es): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet
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New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands
. Only once have spawners been observed in large numbers on the inner shelf: during the winter of 1991/92 ... Paper Title: New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of ... part of the Kerguelen shelf during the 1989/90 to 1993/94 period provide new information on the stock ... the inner shelf has enabled a new cohort of fish to be identified each year. However, annual ... mid 1991, until they reached a mean size of 24/25 cm TL. All the fish below this limit were still in ... . Only once have spawners been observed in large numbers on the inner shelf: during the winter of 1991 ... 1971/72, yielded annual catches up to 30 000 tonnes in the first years of exploitation (Gerasimchuk ... period of one to two years, the bulk of the catches in the fishery, which is based only fish over three ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Autor(es): Duhamel, G
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Preliminary assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (Division 58.4.3b), based on the analysis of fine-scale catch and effort data
Abstract: In 2006 the CCAMLR scientific committee noted several features of exploratory ... Dissostichus fisheries in the southern Indian Ocean (58.4) which gave cause for concern as to the status of the ... resource in this area, and the lack of a scientific basis for setting catch limits in these areas (SC-CAMLR ... the initial exploration of the C2 fine scale catch and effort data held by CCAMLR for the fishery in ...
Meeting Document : WG-FSA-07/44 : Autor(es): J.P. McKinlay, D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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Changing status of three notothenioid fish at the South Shetland Islands (1983–2016) after impacts of the 1970–80s commercial fishery
2007 and 2012 around the South Shetland Islands: (1) continued increase in the abundance of N. rossii ... but seemingly relate to the dramatically changing ecosystem of the region due in part to climate as ... with trends reported in seabirds that feed on juveniles of these notothenioids: decrease in the areas ... commercially fished. Under the regulation of CCAMLR, commercial fishing for finfish in the South Shetland ...
Meeting Document : WG-FSA-17/P01 : Autor(es): E. Barrera-Oro, E. Marschoff and D. Ainley
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Exploratory longline fishing around the Kerguelen Islands (Division 58.5.1). Description of the fishing effort; catchability and target size of Dissostichus eleginoides
fact that fish become unhooked along the side of the ship, which leads to a real catchability value in ... in 1991/92) and that of females (L = 98.70 cm in 1.990/91 and 98.61 cm in 1991/92). The sex ratio is ... fishing over the western shelf break of the Kerguelen shelf (Division 58.5.1). Scientific monitoring of ... . Bottom longlines are generally used at depths of 400 to 600 m. The mainline (1 to 2 miles long) carries ...
Meeting Document : WG-FSA-92/31 Rev. 1 : Autor(es): G. Duhamel (France)
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Network characterisation of the food-web of the Ross Sea, Antarctica
toothfish (Dissostichus mawsoni) in the region. We evaluate: (1) biomass and flow of organic matter by ... pronounced peak in biomass in the lower-middle part of the food-web, a result of high biomass of ... of ecological importance’ in the food-web of the Ross Sea are phytoplankton, mesozooplankton ... a moderate index of ecological importance in the food-web of the Ross Sea shelf and slope. Changing ...
Meeting Document : WG-EMM-12/53 : Autor(es): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)
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On the problem of diurnal migrations of some fish species on the South Georgia shelf (Subarea 48.3)
Abstract: The results of experiments on the South Georgia Shelf carried out in the period of 1986 ... was the most distinctive in Ch.gunnari fry. The individuals used to ascend towards the water column ... individuals were found in the pre-bottom layer by day, being presented their small quantities in the water ... sunset) they ascended into the water column where they were found in the superficial layer. No ...
Meeting Document : WG-FSA-99/64 : Autor(es): I.A. Trunov, J.A. Frolkina and M.P. Konstantinova (Russia)
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Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996
four periods of extensive ice cover during the last 18 years. Variability in seasonal timing, areal ... . Periods of extensive winter ice cover peaked in 1980, 1986, 1991and 1995 and were foreshadowed by the late ... production, particularly the reproductive success of Antarctic krill, in the Antarctic Peninsula area. File ... Paper Title: Areal and seasonal extent of sea-ice cover off the northwestern side of the ... cover in the Bellingsliausen Sea. Periods of extensive winter ice cover peaked in 1980, 1986, 1991 and ... of variability in biological production, particularly the reproductive success of Antarctic krill ... et al. (1992) used a correlation between the ice edge, as defined in charts of sea-ice cover ... Shetland archipelago as part of a study of the causes of variability in the recruitment of Antarctic ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Autor(es): Hewitt, R
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Interannual hydroclimate fluctuations of the Atlantic part of the Antarctic since 1970 to 2000
. In this connection, retrospective hydrometeorological data on the areas of South-West Atlantic ... Abstract: Late in 1999 and early in 2000 there was observed a significant shifting of Falkland ... Current core towards the shelf and abnormally large number of icebergs on the South Georgia Island shelf ... Antarctic were examined from 1970 to 2000 March. The analysis of atmospheric pressure average monthly fields ...
Meeting Document : WG-EMM-00/35 : Autor(es): G. Chernega, I. Polischuk and P. Chernyshkov (Russia)
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Final Report of the Second Session of the Special Antarctic Treaty Consultative Meeting
in 1978 the definitive regime for the ,. conservation of Antarctic marine living resources 6n the ... in respect of the preservation and conservation of living resources in Antarctica; · RECALLING ... following.principles of conservation: (a) Prevention of decrease in the size of any harvested population to levels ... activities and· of its willingness to accept conservation measures in force. The Depositary shall ...
Document : Site Section: The Organisation