Search results
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CEMP Fund cameras and satellite transmitter projects in areas of Ukraine responsibility: state and preliminary results
activity in the Ukrainian Vernadsky Antarctic Station area on service of CEMP cameras and installation ... ARGOS satellite tags in penguin colonies as part of the CEMP projects run by USA, Argentina, Poland and ... Ukraine is reported. The pictures of gentoo colonies at the Galindez and Petermann Islands, and Adelie ... methods. Information on copulation, egg lay, maximum number of eggs, hatch, maximum number of chicks, date ...
Meeting Document : SC-CAMLR-XXXVI/BG/34 : Author(s): D. Lutsenko, G. Milinevsky, O. Savitsky, A. Simon, I. Dykyy, M. Telipska, V. Lytvynov and L. Pshenichnov
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UPDATE OF THE INTEGRATED STOCK ASSESSMENT FOR THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS (DIVISION 58.5.2)
Abstract: The integrated assessment of Patagonian toothfish, Dissostichus eleginoides, for the ... ) analysis of the age-length frequency data suggested that ALKs could be pooled across sub-fisheries without ... significant loss of information. Pooling the ALKs in this way meant that all commercial catch data could be ... coefficient of variation (CV) for the abundance-at-age, assuming a lognormal distribution, each took into ...
Meeting Document : WG-FSA-09/20 : Author(s): S.G. Candy and D.C. Welsford (Australia)
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IN SITU MEASUREMENTS OF TILT ANGLE DISTRIBUTION AND TARGET STRENGTH IN ANTARCTIC KRILL (EUPHAUSIA SUPERBA)
Abstract: Knowledge of the scattering properties of Antarctic krill (Euphausia superba) is ... crucial for biomass estimates of the species, but in situ investigations regarding this are still very ... scarce. We conducted a field study in the Southern Ocean where one of the objectives was to acquire data ... on orientation angles and target strength of Antarctic krill. The main investigations were done off ...
Meeting Document : WG-EMM-08/29 : Author(s): G. Skaret, S.A. Iversen, T. Knutsen, R.J. Korneliussen, E. Ona, R. Pedersen, A. Totland, T. Torkelsen (Norway) and X. Zhao (China)
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Fishing patterns of Japanese krill trawlers
‘operation units’ which consists from a group of repeated operations within certain searching ranges (10nm ... , 30nm, and 60nm). Distribution of the operation units showed considerable variation in space and time ... with the plots of aggregated catch, suggesting these two kinds of CPUEs may not be good indices for ... expressing the status of krill in the fishing ground. Catch per fishing days maybe the reasonable index for ...
Meeting Document : WG-EMM-02/28 Rev. 1 : Author(s): S. Kawaguchi, T. Kameda and Y. Takeuchi (Japan)
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Establishment of a cemp monitoring program at Bouvetøya
western coast of the island during the 1996/97 field season. Species included in the monitoring program ... (1996/97), monitoring of the following parameters were initiated for the two species of penguins ... : Breeding population size (A3), Age-specific annual survival and recruitment (A4), Duration of foraging ... Seal, the program includes monitoring of Duration of cow foraging/attendance cycles (C1) and Pup growth ...
Meeting Document : WG-EMM-97/19 : Author(s): Gjertz, I., Isaksen, K., Bakken, V., Mehlum, F.
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
Abstract: Population dynamics of Black-browed and Grey-headed Albatrosses were studied at Bird ... Albatross colonies decreased, at an average rate of 1.8% per annum. Although the total Black-browed ... Albatross population increased (at 0.8% p.a.), 14 of the 23 colonies (including both study colonies ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ...
Meeting Document : WG-CEMP-93/06 : Author(s): P.A. Prince, P. Rothery, J.P. Croxall and A.G. Wood (United Kingdom)
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Recent increase and southern expansion of Adelie penguin populations in the Ross Sea, Antarctica, related to climatic warming
Abstract: The numbers of Adelie penguins Pygoscelis adeliae (Hombron and Jacquinot) in the Ross ... Barne (77°35’S) with the re-occupation of a former rookery that was abandoned sometime before the ... present century. These biological trends show remarkable synchronisation with physical evidence of ... climatic variation in the McMurdo Sound region. We suggest that the dynamics of Adelie penguin populations ...
Meeting Document : WG-CEMP-92/22 : Author(s): R.H. Taylor and P.R. Wilson (New Zealand)
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On assessing the size of the humped rockcod stock (Notothenia gibberifrons) in Subarea 48.3
approach in this case involved using a target function in the form of the sum of square deviations in ... logarithms of observed and calculated biomass indices and resulted in an estimate of from 21.5 to 42.1 ... thousand tonnes for N. gibberifrons biomass in the 1989/90 season. It is thus possible to suggest a TAC of ... 1.9 to 2.7 thousand tonnes. A similar approach is recommended for assessing the stock of other ...
Meeting Document : WG-FSA-91/26 : Author(s): P.S. Gasiukov (USSR)
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Preliminary analyses in support of the CEMP Review Workshop: serial correlations
Abstract: As part of the preliminary analyses undertaken in preparation for the CEMP Review ... Workshop, the Secretariat has documented serial correlation in time series of CEMP indices. The values ... -03/24. Serial correlation in biological indices occurred in 4, 10 and 33 % of the time series at ... alpha levels of 0.05, 0.10 and 0.20 respectively. Generally, serial correlation appeared more prevalent ...
Meeting Document : WG-EMM-03/27 : Author(s): Secretariat
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Potential effects of UV-B on krill – experimental and genetic studies
spring surface levels of ultraviolet-B, ultraviolet-A and photosynthetically active radiation, in order ... to examine their response in terms of mortality and generalised activity. Levels of ... animals in the dark survived. Addition of ultraviolet-B typical of depths up to 15 m were found to ... content of animals from various treatments was found not to vary. Author(s): S. Newman, S. Jarman, S ...
Meeting Document : WG-EMM-99/24 : Author(s): S. Newman, S. Jarman, S. Nicol, D. Ritz, H. Marchant, N. Elliot and A. McMinn (Australia)