Résultats de la recherche
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Beach debris survey Signy Island, South Orkney Islands, 1998/99
recovered was more than double the mass of items in 1997/98. Classifying the material by source revealed ... that 40% had come from ships or fishing vessels in the form of packaging bands, fishing net and foam ... on the use of packaging bands aboard fishing vessels brought into force by CCAMLR in 1995/96, the ... from beaches at Signy may be partly to do with their longevity in the marine environment. The increase ...
Meeting Document : CCAMLR-XVIII/BG/7 : Auteur(s): Delegation of the United Kingdom
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PRELIMINARY PROPOSAL FOR MARINE SPATIAL PROTECTION AROUND THE SOUTH ORKNEY ISLANDS
areas of conservation importance and the selection of candidate sites for protection. In addition, the ... (covering the region marked in Figure 3) contributing towards the conservation of marine biodiversity in ... ) would apply; ii) Recommend to the Commission that further intersessional work be undertaken in relation ... to the additional areas of conservation importance identified in this paper, with a view to ...
Meeting Document : SC-CAMLR-XXVIII/14 : Auteur(s): Delegation of the United Kingdom
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An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)
maturity was also larger. The proportion of mature fish in the male population sampled was 52.0%, but was ... only 24% in the female population. The mean daily loss rate of toothfish observed at the hauling point ... CPUE by numbers between catches in 1994 and 1997 despite reduction in CPUE by weight indicated that ... exclusion effects may be important in determining the catch taken by longlines. Continuing decreases in size ...
Meeting Document : WG-FSA-97/41 : Auteur(s): Ashford, J.R., Everson, I.
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Factors affecting the growth rate and mass at weaning of Antarctic fur seal pups at Bird Island, South Georgia
maternal characteristics in 1988 or 1989. However in 1990 there was a negative relationship between growth ... the pups influenced the nature and magnitude of sex differences in estimated growth rates. Growth ... , maternal investment was greater in sons than daughters because males were heavier at birth and older at ... conditions that normally exist, individual differences in the growth of pups are most likely influenced by ...
Meeting Document : WG-CEMP-93/09 : Auteur(s): N.J. Lunn, I.L. Boyd, T. Barton and J.P. Croxall (United Kingdom)
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A SIMULATION MODEL FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
ecosystems’ in order to maintain the ecological structure and function of, particularly, deep sea benthic ... enables uncertainties to be captured in a straight‐forward manner to assist CCAMLR in maintaining its ... precautionary approach in managing Antarctic fisheries. The functions developed in this paper provide ... placeholders in the simulation framework and can be replaced when better functions are developed. Author(s ...
Meeting Document : WG-SAM-09/21 : Auteur(s): A.J. Constable (Australia)
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Large-scale oceanographic fluctuations drive Antarctic petrel survival and reproduction
predict variation in the demographic parameters of Antarctic seabirds. First, we used a long-term dataset ... that most of the variation in both reproductive success, timing of hatching, and survival of Antarctic ... petrels can be accurately modeled using the two modes of large-scale climate variability in Antarctica. e ... in the global patterns of climatic variability will generally have detrimental e ects on populations ...
Meeting Document : WG-EMM-16/P14 : Auteur(s): S. Descamps, A. Tarroux, S.-H. Lorentsen, O.P. Love, Ø. Varpe and N.G. Yoccoz
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Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey
Abstract: Antarctic krill (Euphausia superba Dana) is a key species in the Southern Ocean ... fisheries. In this paper, using the multi-frequency acoustic data and the fishery data, the relationship ... higher than average catch of night trawls. The average thickness of krill swarm in the daytime was ... that at night, with the maximum NASC between 160 and 180 m in depth. Both CPUA and CPUE at the ...
Meeting Document : WG-EMM-17/44 : Auteur(s): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu
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Otolith elemental signatures reveal habitat shift of Electrona carlsbergi
the biological data in 1990s, however, the habitat shift of this species was still unclear. The ... . carlsbergi hatched in two different areas, E. carlsbergi with Type I otolith could hatched in the oceanic ... waters of sub-Antarctic zone and spend the first year of life in this region. Those individuals move ... Type II otolith could hatched in the coastal waters and are transported (or moved positively) across ...
Meeting Document : WG-FSA-17/65 : Auteur(s): L. Wei and G.P. Zhu
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Brief report on scientific observation on the fishery vessel Mellas (FAO Statistical Area 41, January to July 2006)
Abstract: Materials on results of scientific observation in fishery cruise on the longliner ... “Mellas”, operating under the Ukrainian flag in FAO statistical area 41 in the southwest Atlantic outside ... ) fisheries are submitted. The data on volume of the biological material collected in the cruise, the data on ...
Meeting Document : WG-FSA-06/13 : Auteur(s): S. Usachev (Ukraine)
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Krill conversion factors
of different krill products are examined and a range of values produced. These are broadly in line ... with those currently in use although the differences are such that use of the traditional factors may ... practice in the fishery, if it is then the use of any of the conversion factors will result in a serious ...
Meeting Document : WG-EMM-01/39 : Auteur(s): I. Everson (United Kingdom)