Resultados de la búsqueda
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Studies of seabirds and seals at Bouvetøya 1998/99
. The main objective for the 1998/99 expedition was to continue the CEMP-monitoring work initiated in ... 1996/97. The species monitored were Chinstrap Penguin (Pygoscelis antarctica), Macaroni Penguin ... (Eudyptes chrysolophus) and Antarctic Fur Seal (Arctocephalus gazella). In addition to the CEMP-work, other ... and pup production of fur seals. The following CEMP-parameters were studied in Chinstrap Penguin and ...
Meeting Document : WG-EMM-00/13 : Autor(es): K. Isaksen (Norway), O. Huyser, S. Kirkman, R. Wanless and W. Wilson (South Africa)
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Towards an ecosystem status assessment for South Georgia ‘Variability of Southern Ocean Ecosystems’ Project Team
Abstract: We present the beginnings of a compilation of a suite of physical and biological ... 1999. We plan to use these data, some of which arise from the British Antarctic Survey's Core ... lead to an improved understanding of some cause-and-effect mechanisms that underlie the pronounced ... interannual variability that we observe habitually in many components of the South Georgia marine ecosystem ...
Meeting Document : WG-EMM-00/61
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STRONG EFFECTS OF ENVIRONMENTAL CONDITIONS ON REPRODUCTIVE SUCCESS OF PENGUINS AT KING GEORGE ISLAND
variability in the reproductive success of Adélie, gentoo, and chinstrap penguins can be explained by simple ... selected by step-wise model fitting procedures corresponded to the incubation periods for each species. Sea ... ice extent measured during the winter prior to breeding also appears to be an important predictor of ... reproductive success in all species. Biological variables measured during the chick-rearing phase, like krill ...
Meeting Document : WG-EMM-09/43 : Autor(es): J. Hinke, C. Reiss and W. Trivelpiece (USA)
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EXPECTED TAG RECAPTURE RATES FROM NEW AND EXPLORATORY FISHERIES FOR DISSOSTICHUS SPP.
Abstract: Tag recapture rates in new and exploratory Dissostichus spp. fisheries in the southern ... Indian Ocean sector of the CCAMLR area are examined. In particular, the potential for tagging programs in ... new and exploratory fisheries to yield sufficient data to be of use in determining TAC’s in the early ... , tag detection rates, natural mortality, fish movement out of the fishery, and IUU removals in order to ...
Meeting Document : WG-FSA-08/63 : Autor(es): J.P. McKinlay and D.C. Welsford (Australia)
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Environmental variability effects on marine fisheries: four case histories
Abstract: The changing nature of marine fisheries requires management approaches that recognize ... fishery stocks in which environmental control is a major contributor to structuring the abundance and ... distribution of the stock. Four examples, ranging from Antarctic krill to oysters, are given that clearly ... illustrate environmental control on the fishery. From these examples, we argue that future management ...
Meeting Document : WG-EMM-97/66 : Autor(es): Hofmann, E.E., Powell, T.M.
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CCAMLR tagging program: tag link status update
Abstract: In order to reflect the level of confidence when linking a tag recapture to a tagging ... event, as well as an indication of the time and effort taken to make the link, the Secretariat ... introduced in 2011 a tag recapture link status code. For the 2011 season, a total of 1433 tags have been ... returned; 50% provide an exact match with tag numbers held in the database, 22 % provide an exact match ...
Meeting Document : WG-SAM-12/22 : Autor(es): Secretariat
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Collection, processing and potential use of sonar data from krill fishing vessels
vessels. The purpose of this paper is to stimulate discussion on the utility of sonars to describe krill ... within a survey area and to consider the metrics (descriptors) we outline in the paper. We hope the ... outcome of our discussions will facilitate the use of sonar data collected from a variety of vessels and ... sonar types by providing guidance on the operation, sonar system settings, and data analysis techniques ...
Meeting Document : SG-ASAM-14/01 : Autor(es): G. Skaret (Norway) and M.J. Cox (Australia)
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PiNT – a tool for renaming observer photographs at sea
Abstract: Within the CCAMLR area, high quantities of images are collected by scientific observers ... at sea while performing the tasks outlined the Scheme on International Scientific Observation (SISO ... species. In order to maintain version control, to process and file the photographs efficiently, and to ... on which vessel a picture was taken by whom, together with basic information on the picture content ...
Meeting Document : WG-FSA-15/76 : Autor(es): N. Gasco, C. Chazeau, P. Tixier (France), C. Heinecken (South Africa), J. Clark and M. Soeffker (United Kingdom)
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Preliminary modelling of potential climate-change impacts on krill and a krill-dependent predator in CCAMLR Subareas 48.1 to 48.3
affect krill resources and the marine ecosystem in Antarctic waters is critical. Previous research has ... assessed the potential consequences of these impacts for both the krill stock and its dependent predators ... using a peer-reviewed krill-predator-fishery ecosystem dynamics model. Initial results demonstrate the ... potential for projected temperature changes to negatively affect the individual weight and population ...
Meeting Document : WG-EMM-16/53 : Autor(es): E.S. Klein, S.L. Hill, G.M. Watters and J.T. Hinke
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Perfluorinated compounds in muscle tissues of Antarctic toothfish in Division 58.4.1 and 58.4.2 of Antarctic Sea
Antarctic toothfish (n=113), and investigated accumulation patterns of PFCs in female and male muscles. The ... ng/g ww of median concentration. The main compounds among PFCs were perfluoro-n-hexanoic acid and ... and female. The levels of PFCs in the present study are comparable to those reported in 31 fish ... species from Korean coastal waters (0.27-4.81 ng/g ww). The concentrations of Perfluoro-1-octanesulfonate ...
Meeting Document : WG-FSA-16/07 : Autor(es): Delegation of the Republic of Korea