Search results
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Krill catch distribution in relation to predator colonies, 1987-1991
Abstract: The distribution of krill catches in relation to predator colonies in Subareas 48.1 and ... December and March, and these are between 10 and 18% of the estimated total penguin consumption in this ... period. The pattern of fishing is very consistent in all years 1988-1991 in Subarea 48.1, but is more ... % of the estimated total penguin consumption. The largest catch taken in this critical period was 94 ...
Meeting Document : WG-KRILL-92/18 : Author(s): Secretariat
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Congruent, decreasing trends of Gentoo Penguins and Crozet Shags at sub-Antarctic Marion Island suggest food limitation through common environmental forcing
] melanogenis breeding annually at Marion Island, one of South Africa’s Prince Edward Islands in the south-west ... the compositions of their diets. Therefore, trends in their populations may be driven by food ... between the mid-1990s and the mid-2000s, exhibited a partial recovery in the late-2000s and then decreased ... to their lowest recorded levels in 2012/13. In both instances, the partial recoveries in the late ...
Meeting Document : WG-EMM-14/P09 Rev. 1 : Author(s): R.J.M. Crawford, B.M. Dyer, L. Upfold and A.B. Makhado
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Diet composition of Antarctic toothfish
muscle tissue of Antarctic toothfish, bycatch specimen and icefish in the stomachs indicated a trophic ... connection between the toothfish and icefish. In this study, similarities in the δ13C values δ15N values of ... Abstract: To identify the important prey items for pre-recruit Antarctic toothfish in the SSRUs ... fishing vessel. In the previous studies, similarities in total FA compositions and the FA profiles in ...
Meeting Document : WG-FSA-16/06 : Author(s): Delegation of the Republic of Korea
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SEASONAL ESTIMATION OF ABUNDANCE BY BOOTSTRAPPING INEXACT RESEARCH DATA (SEABIRD): A METHOD FOR ASSESSING ABUNDANCE AND UNCERTAINTY FROM HISTORICAL COUNT DATA USING ADELIE PENGUINS AS A CASE STUDY
of that kind. The present study attempts to implement this estimator in the form of a parametric ... Abstract: In addition to a review of published studies on Adelie penguin abundance at breeding ... uncertainty at breeding sites in Antarctica. To achieve this task, a menu-driven suite of routines titled ... SEABIRD (Seasonal Estimation of Abundance by Bootstrapping Inexact Research Data) has been developed in ...
Meeting Document : WG-EMM-PSW-08/11 : Author(s): J.P. McKinlay and C.J. Southwell (Australia)
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Diseases and parasites of penguins
Abstract: The study of diseases in wild penguins is important for the identification of endemic ... diseases and the detection of exotic diseases should these occur. It is also important in the understanding ... and parasites recorded for all species of penguins present both in the wild and in captivity. Normal ... values for blood biochemistry and haematology are given as an aid to the identification of illness in ...
Meeting Document : WG-CEMP-94/35 : Author(s): J. Clarke and K. Kerry (Australia)
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BEACH DEBRIS SURVEYS SOUTH SANDWICH ISLANDS
in the group. Only 8 items were found in the initial survey of Demon Point, Candlemas Island. However ... smaller types of debris are likely to have a short residence time on any beach in the South Sandwich ... observations indicated that net floats were present on many beaches in the archipelago). No fragments of net or ... Georgia. However, because of the exposure of beaches in the South Sandwich Islands to heavy and often ...
Meeting Document : CCAMLR-XVI/BG/10 : Author(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 2013–2014
the long-term mean at Bird Island during both summer and winter and was the second highest ever recorded ... in 24 years of surveys. The incidence of marine mammal entanglements was below the long-term mean ... at Bird Island and Signy Island but equal to the mean at King Edward Point. Debris associated with seabird ... colonies was below the mean level for wandering albatrosses and grey-headed albatrosses but above the mean ...
Meeting Document : SC-CAMLR-XXXIII/BG/31 : Author(s): Delegation of the United Kingdom
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Beach debris survey – Main Bay, Bird Island, South Georgia 1996/97
revealed a total of 289 items, 60 % less than in the two previous years. Of the total number of items, 62 ... collection exceeded the winter. Nylon line, identical to that used in longline gear, accounted for 57 % of ... monitoring and the need for further steps to counteract the jettisoning of man-made debris in the Southern ... Abstract: The seventh year of surveys of beached man-made debris at Bird Island, South Georgia ...
Meeting Document : CCAMLR-XVII/BG/7 : Author(s): Delegation of the United Kingdom
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On influence of acoustic survey methodology improvement on krill biomass estimation. (A comparison of results of acoustic surveys based on single-frequency and double-frequency algorithms)
influence of such improvements on krill biomass estimation. The letter seems to become useful in comparative ... Abstract: Substantial improvements in data collection and analytical methodologies of acoustic ... analysis of krill biomass data from the results of different acoustic surveys. There have been presented ... the results of krill biomass comparative estimation by single-frequency and double-frequency ...
Meeting Document : WG-EMM-01/41 : Author(s): S.M. Kasatkina and A.P. Malyshko (Russia)
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Diets of Antarctic toothfish estimated from fatty acids and stable isotopes
the particular importance of accumulation of lipid deposits in their tissue. Toothfish trophic niche ... whole population level. In contrast, the model calculations provided an estimation of dietary shift ... Antarctic toothfish, by-catch and their stomach contents were collected for the past five years in the eight ... locations of he Antarctic Waters. We investigated ontogenetic and spatial variability in resource ...
Meeting Document : WG-FSA-17/12 : Author(s): C.-K. Kang, S.-G. Choi, J. Lee, J. Lee and D. An