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Algunos aspectos biologicos relevantes a la explotacion de la merluza negra (Dissostichus eleginoides Smitt, 1898) en la zona economica exclusiva argentina y sector oceanico adyacente
Abstract: This work aims to the study of the distribution, size structure by depth, first ... eleginoides) in the Argentine Sea, and atempts some explanation by a trophic analysis of such distribution ... explained partially by canibalism and the size of the available preys at different depth. According to the ... depth. Greatest concentration areas were found south and NE of the Malvinas Islands, over the slope of ...
Meeting Document : WG-FSA-97/49 : Автор(ы): Almeyda, S.M., Prenski, L.B.
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Swimming speed and allocation of time during the dive cycle of Antarctic fur seals
than was exhibited by animals when swimming at the surface. Swimming speeds were fastest during the ... duration and was influenced by diving swimming speed. This relationship was, on average, close to that ... predicted by a model (Houston & Carbone, Behav. Ecol., 3, 255-265) which suggested that the metabolic ...
Meeting Document : WG-EMM-95/25 : Автор(ы): Bevan, R.M., Boyd, I.L., Reid, K.
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Demographic studies of Antarctic krill Euphausia superba Dana in the Cooperation and Cosmonaut Seas (Indian sector of the Southern Ocean)
Bertalanffy growth curves calculated for different areas are similar to those obtained by Australian ... was clearly dominated by individuals of age 4+. The coefficients of natural mortality (M) of E.superba ... in the Indian sector of the Southern Ocean, calculated by the methods of Alverson & Carney ...
Meeting Document : WG-Krill-94/16 : Автор(ы): E.A. Pakhomov (Ukraine)
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A revised assessment of the impact of the krill fishery on penguins in the South Shetlands
penguins was also insignificant. Furthermore, less similarity between krill caught by trawlers and those ... captured by penguins was observed. The above mentioned results imply a low level of competition between the ... 3 tonnes/half-month period) is smaller by one or more orders of magnitude within the localized areas ...
Meeting Document : WG-Joint-94/17 : Автор(ы): T. Ichii, M. Naganobu and T. Ogishima (Japan)
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Diving pattern and performance in nonbreeding gentoo penguins (Pygoscelis papua) during winter
were followed by surface intervals two to three times dive duration. Deep dives showed clear diel ... in Gentoo Penguins is changed by varying the frequency and duration of foraging trips, rather than by ...
Meeting Document : WG-CEMP-92/37 : Автор(ы): T.D. Williams (United Kingdom), A. Kato (Japan), J.P. Croxall (United Kingdom), Y. Naito (Japan), D.R. Briggs, S. Rodwell and T.R. Barton (United Kingdom)
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The State of Exploited Fish Stocks in the Atlantic Sector of the Southern Ocean in 1988
of the 1960s by the Soviet Union mainly. Notothenia rossii marmorata was the target species in the ... 1986-88. N. rossii marmorat is the species mostly affected by the fishery. Stock size around South ... depleted by the fishery and are in need for conservation measures. P. br. guntheri is the only species for ...
Meeting Document : WG-FSA-88/14 : Автор(ы): K.-H. Kock and F.-W. Köster (FRG)
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Ocean acidification and the Southern Ocean
assumes “business as usual”- emissions leading to 778 ppm of CO2 in the atmosphere by 2100- aragonite will ... , which assumes that atmospheric CO2 will only reach 563 ppm by 2100, the aragonite saturation horizon is ... likely to have shrunk from 730 to 60 m by 2100, with the entire Weddell Sea undersaturated with respect ...
Meeting Document : CCAMLR-XXIX/BG/24 : Автор(ы): ASOC Observer
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Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia
highest proportion of fish in over 20 years of routine monitoring (46% by mass; particularly the myctophid ... constrained by the need to return and feed their offspring both predator species foraged to the northwest of ... more successful at exploiting krill. When unconstrained by chick-rearing (during March) penguins ...
Meeting Document : WG-EMM-10/P07 : Автор(ы): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan
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The relative impacts of Autolines and Spanish longlines on vulnerable marine ecosystems
several Conservation Measures that limit bottom fishing and require data collection by fishing vessels ... limited. We used data collected by the longline fishery in Subarea 88.1 to compare the impacts of ... that biased reporting (e.g., under-reporting by vessels using Spanish longlines) would change our ... Autolines and Spanish longlines on VME taxa. We found that the probabilities of observing positive ...
Meeting Document : WG-FSA-12/27 : Автор(ы): T. Gerrodette and G. Watters (USA)
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Foraging zones of the two sibling species of giant petrels in the Indian Ocean throughout the annual cycle: implication for their conservation
data were provided by GLS loggers (Global Location Sensing), and detail of breeding foraging trips were ... provided by ARGOS PTT. In order to assess differences in bycatch susceptibility, comparisons were made ... threatened by toothfish longline fisheries on shelf area of EEZs, and adult females as well as juveniles, are ...
Meeting Document : WG-FSA-12/67 : Автор(ы): L. Thiers, K. Delord, C. Barbraud (France), R.A. Phillips (United Kingdom) and H. Weimerskirch (France)
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