Resultados de la búsqueda
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The diet of black-browed albatrosses at the Diego Ramirez Islands, Chile
Abstract: The diet of black-browed albatrosses was studied at Gonzalo Island, Diego Ramirez ... , Chile, during the early chick-rearing period of 2000, 2001 and 2002. Diet composition was determined by ... sampling chick stomach contents during January and February of each year. Reconstituted meal mass was ... mass). The distribution of the prey species indicates that black-browed albatrosses obtained the bulk ...
Meeting Document : WG-FSA-03/9 : Autor(es): J. Arata (Chile) and J.C. Xavier (United Kingdom)
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Measurement of ocean temperatures using instruments carried by Antarctic fur seals
Abstract: The study aimed to test the utility of instruments deployed on marine mammals for ... recorders (TDRs) fitted to lactating Antarctic fur seals foraging from the coast of South Georgia ... . Congruence was found at horizontal spatial scales from 0.01° X 0.01° to 0.5° X 0.5° (degrees of latitude and ... longitude), and at a vertical scale of 10 m. However, there was no significant correlation between ...
Meeting Document : WG-EMM-01/56 : Autor(es): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
ecosystem based approach to resource management. We propose a method using krill sampled from the diet of ... predators to provide a length-frequency distribution of krill at times when it is possible to run automated ... operations. This will allow a robust estimate of krill abundance to be estimated from acoustic data. Changes ... in the length-frequency distribution of krill over a period of few weeks produced a 10 % difference ...
Meeting Document : WG-EMM-00/42 : Autor(es): K. Reid and A.S. Brierley (United Kingdom)
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An inter-laboratory comparison of ages estimated for Dissostichus eleginoides using otoliths
Abstract: To examine consistency between laboratories in age estimation of Patagonian toothfish ... , then grinding from the anterior and posterior sides of the otolith. Ages were estimated from the ... one reader from the National Institute of Water and Atmospheric Research, without auxiliary ... information: the readers generally read the sections similarly, with 84.7% of the estimates falling within two ...
Meeting Document : WG-FSA-99/56 : Autor(es): J. Ashford (United Kingdom) and P. Horn (New Zealand)
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Diet composition of Dissostichus eleginoides in Subarea 48.3, Dr Eduardo Holmberg survey March/April 1996
Abstract: A diet analysis of the patagonian toothfish Diissostichus eleginoides in the Subarea ... 48.3 in March/April 1996 was carried out by frequency of occurrence (F%) and coefficient "Q" ... ; (%) methods. The samples consisted chiefly of immature specimens, with predominant length ranges of 30-70 cm ... , although its importance was overestimated by the frequency of occurrence method. Cephalopods and mysids ...
Meeting Document : WG-FSA-96/29 : Autor(es): Barrera-Oro, E., Marschoff, E., Casaux, R.
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By-catch in the longline fishery along the shelf slope of Kerguelen (Division 58.5.1) during the 1994/95 and 1995/96 cruises
Abstract: By-catch was observed during two successive cruises of longliners fishing for ... of Kerguelen. By-catch consisted mainly of Rajidae Bathyraja spp. (85 %). The proportion of species ... taken in the by-catch was low (less than 0.75%) and does not represent a problem at the present level of ... fishing. The results indicate that longlining therefore is a highly target-specific method of fishing in ...
Meeting Document : WG-FSA-96/11 : Autor(es): Capdeville, D., Duhamel, G.
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CPUES and body length of Antarctic krill during 1993/94 season in the fishing grounds around the South Shetland Islands
. Main fishing grounds were persistently formed in the north of Livingston Island throughout the season ... , and the west of Elephant Island from April to May. CPUEs showed the highest values at the height of ... summer (early February- early March) in the north of Livingston Island, and April at the west of Elephant ... Island. Krill with a modal length of 41-45mm were dominant in catches, almost same as the previous season ...
Meeting Document : WG-EMM-95/51 : Autor(es): Kawaguchi, S., Ichii, T., Naganobu, M.
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Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological investigations
, attained in the 1992/1993 season. The report presents an analysis of Polish krill catches in the 1991/1992 ... and 1992/1993 seasons. CPUEs by month in individual subareas of the Atlantic sector of the Antarctic ... were calculated. The results of biological investigations of krill on the fishing grounds of the South ... ) Title: Polish krill fishery in the 1991/92 and 1992/93 seasons results of catches and biological ...
Meeting Document : WG-Krill-94/09 : Autor(es): J. Sosinski and Z. Cielniaszek (Poland)
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Entanglement of Antarctic fur seals in man-made debris at Bird Island, South Georgia
Abstract: The incidence of entanglement of Antarctic fur seals (Arctocephalus gazella) in Man ... -made debris at Bird Island, South Georgia, was monitored throughout the austral winter and summer of ... 1991 as part of an on-going study by the British Antarctic Survey. Only seven seals were observed ... incidence of entanglement during the pup-rearing period was slightly higher than in the previous year (48 ...
Meeting Document : SC-CAMLR-XI/BG/09 : Autor(es): Delegation of United Kingdom
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Accumulation of fishing debris, plastic litter and other artefacts on Heard Island and Macquarie Island, Southern Ocean
Abstract: Sections of coastline of Heard and Macquarie Islands were surveyed for marine debris in ... summer 1987-88, and 1989 respectively. These surveys were carried out at the same sites of previous ... surveys in 1986-87 at Heard Island, and 1988 at Macquarie Island. The minimum rate of artefact ... catchment area. Plastic litter was a major component of the debris at both islands. Fisheries related debris ...
Meeting Document : CCAMLR-VIII/BG/11 : Autor(es): D.J. Slip and H.R. Burton (Australia)