Résultats de la recherche
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Foraging energetics of Antarctic fur seals in relation to changes in prey availability
Abstract: This research examines the energy budget of breeding female Antarctic fur seals, both ... when food was plentiful and when it was scarce. The energy expenditure and change in body mass of ... 9.52 ± 0.55 W/kg (n = 22), a value that is 6.7 times the predicted basal rate but only 1.9 times the ... . Krill, the nearly exclusive prey of breeding females, were very scarce in 1984 at South Georgia. Fur ...
Meeting Document : SC-CAMLR-VIII/BG/13 : Auteur(s): Delegation of United Kingdom
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Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2014–2015
, at Signy Island, South Orkneys and at Goudier Island, Antarctic Peninsula for the period April 2014 ... during winter (April to September 2014) and summer (October 2014 to March 2015) respectively. For the ... debris was recorded at Goudier Island. The first record of an entangled juvenile elephant seal was made ... at any site during the reporting period. Overall, the occurrence of beached marine debris was above ...
Meeting Document : SC-CAMLR-XXXIV/BG/27 : Auteur(s): Delegation of the United Kingdom
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Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2016/17
, at Signy Island, South Orkneys and at Goudier Island, Antarctic Peninsula for the period April 2016 ... (operational 13 November 2016 to 1 March 2017), which is the highest number since observations began in 2010/11 ... instances of entangled fur seals and the first record of an entangled elephant seal at King Edward Point. No ... at any site during the reporting period. Overall, the occurrence of beached marine debris was above ...
Meeting Document : SC-CAMLR-XXXVI/BG/35 : Auteur(s): C. Waluda
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A review of national observer training and education programs (Scheme of International Scientific Observation)
Abstract: At CCAMLR-XXV, the Scientific Committee noted that the implementation of the observer ... program and the application of observer requirements could be improved by adopting a standard approach to ... levels of education and training for observers was undertaken by the Secretariat. Information provided by ... identified, these are: role of the scientific observer; vessel and fishing operations; catch estimation; gear ...
Meeting Document : SC-CAMLR-XXVI/BG/09 Rev. 1 : Auteur(s): Secretariat
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Descriptive analysis of haul data from FV Atlantic Navigator in Elephant Islands (48.1), South Georgia Islands (48.3) and South Orkney Islands (48.3) krill fishery (summer 2004 to early winter 2005)
South Orkney islands zone (48.2). The fishing season was extended from 19/2/04 (summer 2004) to 7/4/05 ... (early winter 2005) with a total of 251 days of effective fishing. Descriptive study of the fishery ... operation was performed for the two fishing systems used: conventional fishing system (CON) and the ... were analyzed to describe differentialy catch rates (catch per day and catch per minute) of the three ...
Meeting Document : WG-EMM-05/12 : Auteur(s): O. Pin, H. Nión, E. Delfino and P. Meneses (Uruguay)
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Comparisons in diet between diurnal and overnight foraging chinstrap penguins at Seal Island
their diets but fish constituted 0-1 % and 14-45 % of the diet of diurnal and overnight foragers ... respectively. The highest intake of fish was observed in 1993/94 when krill abundance was very low. Calorific ... values of the estimated diet mass were 4085 kJ for diurnal foragers and 4809 kJ for overnight foragers ... ) and an overnight forager (5732 kJ) based on available input parameters. A comparison of krill in the ...
Meeting Document : WG-EMM-96/55 : Auteur(s): Hayashi, T., Ichii, T., Cameron, M.F., Miura, A., Jansen, J.K., Bengtson, J.L., Boveng, P.
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Estimating by-catch from CCAMLR data
Abstract: Quantifying the catch rates and biomass of by-catch species on CCAMLR’s fishing grounds ... is an essential component of the assessment advice prepared by WG-FSA. However, such analyses are ... problematic because the CCAMLR datasets are incomplete and have a high occurrence of ‘missing catch values’. A ... method to treat ‘missing catch values’ using estimates derived from the mean weights of by-catch species ...
Meeting Document : WG-FSA-SAM-05/4 : Auteur(s): Secretariat
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A synoptic review of energetic requirements of southern ocean krill predators
Abstract: The purpose of this paper is to synthesize information on the energetics and food ... requirements of krill predators that may be in the most direct competition with the krill fishery. These krill ... predators are the Adélie (Pygoscelis adeliae), chinstrap (Pygoscelis antarctica), gentoo (Pygoscelis papua ... ), and macaroni (Eudyptes chrysolophus) penguins and the crabeater (Lobodon carcinophagus) and Antarctic ...
Meeting Document : WG-EMM-96/19 : Auteur(s): Stansfield, A.M.
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Manual for age determination of Antarctic toothfish (Dissostichus mawsoni)
) is part of the focus of the SC-CAMLR workplan for 2010. The aim of the current work was to produce a ... manual that presents standard protocols used by the National Institute of Water and Atmospheric Research ... Limited (NIWA) for estimating age of D. mawsoni. It uses otoliths collected from the Ross Sea region and ... aims to guide researchers to maintain common procedures. This will increase the precision and accuracy ...
Meeting Document : WG-FSA-10/21 : Auteur(s): C.P. Sutton and P.L. Horn (New Zealand)
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Nine years of tag-recapture in CCAMLR Statistical Subarea 48.3 – Part I: General data characterisation and analysis
Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3. It describes the tagging procedure, the ... information gained about biology, growth and movement of Patagonian toothfish, and explains the overlap of ... tagging length distributions with those of the landed catch and survey data. The characterisation of tag ... recapture data from Subarea 48.3 shows that the tagging programme is successful in providing substantial ...
Meeting Document : WG-SAM-14/35 : Auteur(s): M. Soeffker, C. Darby and R.D. Scott (United Kingdom)