Résultats de la recherche
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Population demography of Antarctic fur seals: the costs of reproduction and implications for life-histories
Abstract: 1. This study examined the costs of reproduction in terms of future survival and ... . 2. Population age structures were used, in conjuction with the measured age-specific survival rates ... , to estimate the rate of increase of the population as 10•7% per annum. 3. The average annual survival ... rate was 0•83 (SD = 0•10) with a range from 0•65 to 0•93. Survival rate showed no trend through time ...
Meeting Document : WG-EMM-95/26 : Auteur(s): Reid, K., Croxall, J.P., Lunn, N.J., Boyd, I.L.
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Do krill and salp compete? Contrary evidence from the krill fisheries
blooms and the presence of green krill were analysed. No relationship between salp density and the ... . However, no clear relationship was observed in the Elephant Island area. Possible reasons for these ... feeding on phytoplankton were analysed using logbook data from Japanese krill trawlers operating near the ... Antarctic Peninsula. Interannual and seasonal variability of the timing, duration and intensity of salp ...
Meeting Document : WS-AREA 48-98/4 Rev. 1 : Auteur(s): S. Kawaguchi (Japan), W.K. de la Mare (Australia), T. Ichii and M. Naganobu (Japan)
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997/98 to 2006/07
Sea fishery have been very consistent over the past 3–4 seasons. There is no evidence of any ... truncation of the overall length frequency distribution, and no evidence for a reduction in fish length in ... . So at this stage there is no evidence for strong variation in year class strength in the fishery ... Abstract: The exploratory fishery for Antarctic toothfish (D. mawsoni) has been operating for ten ...
Meeting Document : WG-FSA-07/28 : Auteur(s): S.M. Hanchet, M.L. Stevenson and A. Dunn (New Zealand)
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Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas
South Georgia (March to May, 1993), and by the Japanese fishing vessels No.3 and No.5 Chiyo Maru in the ... the South Orkney Islands area, eight hauls were subjected to analysis and there was no by-catch of ... krill Euphausia superba Dana conducted by the Ukrainian trawler Grigory Kovtun in the vicinity of South ... Georgia (May to July, 1992), the Polish trawler Lepus on the fishing grounds of South Orkney Islands and ...
Meeting Document : WG-FSA-96/19 : Auteur(s): Cielniaszek, Z., Pakhomov, E.A., Iwami, T.
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Commercial fishing in the Ross Sea
toothfish through the Ross Sea region, and little or no impacts on dependent species and the ecosystem ... Abstract: COLTO members have been fishing for toothfish in the Ross Sea for the past 15 years ... . The New Zealand Seafood Industry Council, representing NZ toothfish operators in COLTO, have prepared ... the attached information sheet to contribute to conversations surrounding sustainable fishing ...
Meeting Document : CCAMLR-XXXI/BG/35 : Auteur(s): Submitted by COLTO
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Preliminary analyses in support of the CEMP Review Workshop: power analyses
Abstract: A series of power (sensitivity) analyses of CEMP indices was made using the DOS-based ... change over the range –10% to +10% of a mean survey value. Each run of MONITOR involved the calculation ... of power for 3 survey scenarios and 3 alpha levels (0.05, 0.10 and 0.20). The 3 surveys scenarios ... change, and CEMP indices A3 (delta log transform), A8a (no transform), A8c (log odds transform), B1a ...
Meeting Document : WG-EMM-03/26 : Auteur(s): Secretariat
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Gear loss reported by longline fishing vessels for the 2018 and 2019 fishing seasons
no difference in the relative reporting of lost hooks by gear type, with rates of loss recorded at ... Abstract: Gear loss as reported by longline vessels from the 2018 and 2019 fishing seasons ... . Vessels reported 1 632 km of line lost in the Convention Area, of which 27% were complete lines. There was ... 0.3% for each gear type for the past two seasons. There was a significant difference in the frequency ...
Meeting Document : WG-FSA-2019/18 : Auteur(s): CCAMLR Secretariat
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Is toothfish catch correlated with the catch of vulnerable benthic invertebrate taxa?
benthic invertebrate catch rates at a longline segment level. Analysis of the data available showed no ... Abstract: Accurate estimation of the true impact of bottom fishing on vulnerable marine ... ecosystems (VMEs) requires knowledge of the distribution of those communities relative to the fishing ... study used the catch of the six most common vulnerable invertebrate taxa reported by observers on New ...
Meeting Document : WG-EMM-10/27 : Auteur(s): S.J. Parker and M.H. Smith (New Zealand)
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An exploratory fishing expedition for Dissostichus eleginoides around the South Sandwich Islands, Antarctica
Abstract: An exploratory fishing survey was undertaken around the South Sandwich Islands (FAO ... Subarea 48.4), to establish the presence and abundance of the Patagonian Tootfish Dissostichus eleginoides ... with a view to opening a new fishery under the auspices of the Commission for the Conservation of ... Antarctic Marine Living Resources (CCAMLR). The survey was undertaken by the Chilean long-liner B/F Friosur ...
Meeting Document : SC-CAMLR-XII/BG/04 : Auteur(s): Delegations of Chile and United Kingdom
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in Statistical Subarea 88.3 in 2015/16
& WG-FSA-12/13). It was also noted that no tagged fishes were recaptured during the previous ... recapture. it was further noted that there was no research activities more than two consecutive years in the ... Abstract: The subarea 88.3 is a large area contained from 105°W to 70°W where has been closed to ... directed fishing following the results of a Chilean survey activities in 1998 (SC-CCAMLR-XVII/BG/7 ...
Meeting Document : WG-FSA-15/65 : Auteur(s): Delegation of the Republic of Korea