Resultados de la búsqueda
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Influence of sampling protocol on diet determination of gentoo penguins, Pygoscelis papua and Antarctic fur seals, Arctocephalus gazella
Abstract: The influence of two sampling protocols on diet determination of two marine predators ... . The collection of diet samples on three occasions over a two week period was compared with collecting ... in the mass of food recovered from penguins were found but this was attributed to the mass of penguin ... significant determinant of the mean length of krill Euphausia superba recovered from penguins, there were no ...
Meeting Document : WG-EMM-99/29 : Autor(es): S.D. Berrow, R.I. Taylor and A. Murray (United Kingdom)
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Results of phase I of the Russian research program for toothfish fishery in Subarea 88.3 during the 2010/11 season
Abstract: In accordance with decision of SC-CCAMLR in 2010, the Russian Federation conducted ... been made, the total number of exposed hooks being 87,096. The research program covered SSRU B, C, and ... D of Subarea 88.3. In SSRU A longlines were not investigated because ice conditions were difficult ... . All toothfish catches and by-catch were subjected to biological analysis. 30 toothfish individuals of ...
Meeting Document : WG-FSA-11/36 : Autor(es): Delegation of Russia
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Population dynamics of the wandering albatross (Diomedea exulans) on Macquarie Island and the effects of mortality from longline fishing
Abstract: The estimated breeding population of wandering albatrosses on Macquarie Island ... increased from 17 in 1956 to a maximum of 97 in 1966, and then declined at an average rate of 8.1% per year ... emigration). The decline is correlated with the onset of large-scale fishing for tuna in the southern ... hemisphere using longlines. The effect of longline mortality on the population dynamics of the wandering ...
Meeting Document : WG-IMALF-94/07 : Autor(es): William K. de la Mare and Knowles R. Kerry (Australia)
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IDENTIFYING PATTERNS IN DIET OF MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) AT SOUTH GEORGIA USING BOOTSTRAPPED CONFIDENCE INTERVALS OF A DIETARY INDEX
confidence intervals for an index of relative importance (% IRIDC) of prey categories. Diet varied ... ) fish tended to prey on a higher proportion of T. gaudichaudii and small euphausids such as Thysanoessa ... sp. and took smaller quantities of E. superba. In a season of poor krill availability (summer of 2003 ... -2004) the proportion of krill in the diet, stomach fullness and fish condition (indicated by length ...
Meeting Document : WG-FSA-08/29 : Autor(es): C.E. Main, M.A. Collins, R. Mitchell and M. Belchier (UK)
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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 ... , to estimate the rate of increase of the population as 10•7% per annum. 3. The average annual survival ... of food. Survival rate was unrelated to any other environmental or demographic parameter including ... population size. 4. There was no evidence of senescence. Survival rate was not related to year of birth or ...
Meeting Document : WG-EMM-95/26 : Autor(es): Reid, K., Croxall, J.P., Lunn, N.J., Boyd, I.L.
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Spatial overlap of krill-dependent predators and krill fishery catches and a proposal for subdivision of catch limits in Subarea 48.1
Abstract: Progressing from Stage 1 to Stage 2 of a feedback management strategy requires a better ... understanding of spatial overlap between predators and fishing activity. We provide estimates of the spatial ... in Subarea 48.1. In general, overlap of summer and winter foraging habitats with krill catches in ... might affect the distribution of fishing effort. A comparison of CEMP parameters from two years with ...
Meeting Document : WG-EMM-14/36 : Autor(es): J.T. Hinke, M.E. Goebel (USA), M.M. Santos (Argentina), P.N. Trathan (UK), W.Z. Trivelpiece and G.M. Watters (USA)
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Identification of marine Important Bird and Biodiversity Areas for penguins in South Shetland and South Orkney Islands: a comparison of two different approaches
Abstract: • We provide a method of analysing penguin tracking data to identify marine IBAs, based ... on pre-existing approaches but revised according to the specific ecology of Pygoscelis penguin ... , and 2) revision of parameters for the kernel analysis (the smoothing factor and the utilization ... distribution); • We applied the revised method to 24 datasets of tracking data (three species, seven colonies ...
Meeting Document : WG-EMM-17/35 : Autor(es): M.P. Dias, A.P.B. Carneiro, V. Warwick-Evans, C. Harris, K. Lorenz, P. Trathan
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Report to the Scientific Committee for the Conservation of Antarctic Marine Living Resources on the outcomes of the EU-H2020 Project ‘Mesopelagic Southern Ocean Prey and Predators (MESOPP)’ and its utility to SC-CAMLR
Abstract: The objective of the MESOPP project ‘Mesopelagic Southern Ocean Prey and Predators' ... ; is to: Make an inventory of science challenges, stakes and existing policies and develop tools to ... USA, New Zealand, Canada (in the Frame of the Galway statement), Brazil and all active countries ... enhancement of collaborations by eliminating various obstacles in establishing a common methodology and a ...
Meeting Document : SC-CAMLR-38/BG/30 : Autor(es): A.J. Constable, P. Lehodey and P. Koubbi
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Stones in toothfish stomachs: an unusual source of geological information from closed regions of Antarctic shelf and slope
Abstract: The rocks from stomachs of Dissostichus mawsoni were used as a source of geological ... stones may be used for geological description of the closed areas of Antarctic shelf and slope. In this ... respect, Dissostichus mawsoni may be considered as a «dredge» with a wide area of sampling. Preliminary ... analyses allow qualitative estimation of geological structure of Antarctic shelf and continental slope in ...
Meeting Document : WG-FSA-07/58 : Autor(es): N.V. Kokorin, D.S. Klucharev and M.A. Sukhoruchenkov (Russia)
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in July 2007, using the generalised yield model
Abstract: A survey of mackerel icefish, Champsocephalus gunnari, was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in July 2007 to provide the information for an assessment of short ... -term annual yield in the 2007/2008 CCAMLR season. This paper provides a preliminary assessment of yield ... for the area of Division 58.5.2 to the west of 79o 20’ E using standard CCAMLR methods. Evidence of ...
Meeting Document : WG-FSA-07/47 : Autor(es): D.C. Welsford (Australia)