Resultados de la búsqueda
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Behaviour of Dissostichus eleginoides fitted with archival tags at Heard Island: preliminary results
Abstract: Thirty nine Dissostichus eleginoides were released in the vicinity of Heard Island ... carrying archival tags in April 2002. Since then seven have been recaptured and the depth and temperature ... data they recorded is analysed here. Most of the fish had periods of active vertical movement ... alternating with periods of relative inactivity, loosely correlated with moon phase. The direction of vertical ...
Meeting Document : WG-FSA-02/60 : Autor(es): R. Williams and T. Lamb (Australia)
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CCAMLR conservation measures: alternative approaches for fishery measures
Abstract: Conservation measures are an integral part of the Convention and are used for managing ... Antarctic marine living resources. Over the 17 years of their existence, conservation measures have grown in ... number and complexity, from two measures adopted at CCAMLR-III to 61 measures in force in 2000/01. The ... majority of the conservation measures adopted by the Commission deal with the management of fisheries, and ...
Meeting Document : CCAMLR-XX/20 Rev. 1 : Autor(es): Secretariat
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Preliminary study on reproduction in Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994
Abstract: A preliminary histological analysis on the ovarian development in Champsocephalus ... described for other species. A gonad maturation scale was elaborated and adapted to the macroscopic scale ... commonly used. Oocytary resorption processes were observed during ovarian maturation. In some cases the ... ovaries presented few atretic oocytes; in others a generalized regression was found. In the southwest ...
Meeting Document : WG-FSA-94/28 : Autor(es): G.J. Macchi and E.R. Barrera-Oro (Argentina)
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Biology and harvesting of Dissostichus eleginoides around Kerguelen Island (Division 58.5.1)
Abstract: Dissostichus eleginoides is becoming an increasingly important species in the fisheries ... of the Southern Ocean. In Division 58.5.1, a directed trawl fishery has been in operation since 1984 ... /85 and has expanded in the deep western sector of the Kerguelen shelf. This fishery harvests the sub ... -adult/adult part of the stock. Fishing effort and corresponding catches are very variable from one year ...
Meeting Document : WG-FSA-91/09 : Autor(es): G. Duhamel (France)
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Propuesta de la UE para proteger comunidades y hábitats marinos en áreas expuestas por el retroceso o el derrumbamiento de barreras de hielo en las Subáreas 88.3, 48.1 y 48.5
Abstract: This paper introduces a draft Conservation Measure for the designation of Marine ... Protected Areas for the protection of habitats and communities under ice shelves, glaciers and ice tongues ... . Adoption of this Conservation Measure would provide for the precautionary protection of new habitats after ... ice shelves collapse, and for protecting the establishment of new biodiversity as it develops in these ...
Meeting Document : CCAMLR-XXXI/30 : Autor(es): Delegation of the European Union
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Conceptual model of Antarctic epi- and mesopelagic fish
Abstract: The Convention for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... currently considering plausible models of the Southern Ocean ecosystem within the Working Group on Ecosystem ... Monitoring and Management (WG-EMM). Epi- and mesopelagic fish are key components in the oceanic (deep water ... ) marine ecosystem throughout the CCAMLR area. While not in most cases the object of commercial fisheries ...
Meeting Document : WG-EMM-04/58 : Autor(es): R. Williams (Australia)
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Second International Fishers Forum: executive summary Western Pacific Regional Fishery Management Council
Abstract: While work to develop solutions to reduce the bycatch of seabirds and sea turtles by ... the waters of many nations during their life cycle. To further this cause, the Western Pacific Fishery ... Regional Fishery Management Council hosted the Second International Fisheries Forum (IFF2), November 19-22 ... , 2002, in Honolulu, Hawaii. IFF2 built on the First International Fishers Forum (IFF1) held in Auckland ...
Meeting Document : WG-FSA-03/25
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Population trends of albatrosses and petrels at sub-Antarctic Marion Island
Abstract: We report on the population changes of five species of Procellariiform seabirds ... -chinned petrel (Procellaria aequinoctalis). The four large surface-nesting species (wandering albatross ... , grey-headed albatross and the northern and southern giant petrel) show similar population trends over ... the last 16-18 years. All were stable or decreasing during the 1980s, followed by a recovery period ...
Meeting Document : WG-FSA-01/11 : Autor(es): D.C. Nel, P.G. Ryan, R.J.M. Crawford, J. Cooper and O. Huyser (South Africa)
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Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation
and video footage from several Antarctic krill were carried out to determine the effect of animal ... incidence relative to the incident acoustic wave exhibited widely spaced, deep nulls, whereas off-broadside ... echo spectra had a more erratic structure, with several closely spaced nulls of variable depth. The ... pattern of changes in echo spectra with orientation for the experimentally measured acoustic returns was ...
Meeting Document : WG-EMM-99/41 : Autor(es): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)
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Krill biomass estimates for South Georgia, December and January 1996/97
conducted within two 80 x 100 km areas over the shelf-break to the north-east and north-west of South ... Georgia during December/January 1996/97. Netting suggested that the mean lengths of krill within the ... to be attributable to krill were identified on the basis of the difference between mean volume ... volume backscattering strengths at 120 kHz were scaled by the appropriate TS value to determine mean ...
Meeting Document : WG-EMM-97/48 : Autor(es): Goss, C., Watkins, J.L., Brierley, A.S.