Search results
-
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.
-
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)
-
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)
-
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)
-
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
-
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)
-
THE ROSS SEA: A CANDIDATE FOR IMMEDIATE INCLUSION IN A NETWORK OF MARINE PROTECTED AREAS
Abstract: In the Southern Ocean fisheries are increasingly being exploited while the effects of ... populations and communities, thus confounding management. It is timely for CCAMLR to develop a network of MPAs ... , with initial inclusion of the well-researched Ross Sea, the area of the Southern Ocean having ... last stretches of the world’s oceans where sea ice remains an important part of the system. The Ross ...
Meeting Document : CCAMLR-XXVII/BG/30 : Author(s): Submitted by ASOC
-
Short note: By-catch of fishes caught by the krill fishing vessel Niitaka Maru in the South Georgia area (August 2007)
Abstract: Scientific observation on the species composition and abundance of fishes incidentally ... from 6 August to 30 August to the north of South Georgia Is. Among 87 net hauls quantitatively examined ... 21 hauls. Among a total of 7 fish species, Myctophidae 3, Zoarcidae 1, Nototheniidae 1 and ... Channichthyidae 2, recognized, Krefftichthys anderssoni of Myctophidae occurred most frequently (38.5% of net ...
Meeting Document : WG-EMM-08/57 : Author(s): T. Iwami and M. Naganobu (Japan)
-
A multi-frequency method for improved accuracy and precision of in situ target strength measurements
Abstract: The effectiveness of a split-beam echosounder system to delineate single scatterers and ... synchronized signals from two or more adjacent split-beam transducers of different frequencies. The accuracy of ... from one of the split-beam transducers, additional corresponding TS measurements can be collected with ... juxtaposed single-beam transducers. Both methods were utilized to extract in-situ TS measurements of ...
Meeting Document : WG-EMM-97/24 : Author(s): Hewitt, R.P., Soule, M.A., Demer, D.A.
-
Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3
Abstract: With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... the considered cases with the different growing parameters, with the exception of the case of fishing ... sites. By other hand, when comparing the different mean values of M for the different variables, it was ... hooks N° 22. The general mean value of M calculated for the 44 analyzed situations was 0.14 ± 0.03 ...
Meeting Document : WG-FSA-92/21 Rev. 1 : Author(s): C.A. Moreno and P.S. Rubilar (Chile)