Resultados de la búsqueda
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Linking fish and shags population trends
reliable cause of the declining trend observed in shag colonies at the South Shetland Islands is the ... concomitant decrease in the abundance of two of their main preys, the nototheniids Notothenia rossii and ... Gobionotothen gibberifrons, owed to the intensive industrial fishing in the area in the late 1970s. Author(s ...
Meeting Document : WG-EMM-12/36 : Autor(es): R. Casaux and E. Barrera-Oro (Argentina)
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Linking fish and shags population trends
reliable cause of the declining trend observed in shag colonies at the South Shetland Islands is the ... concomitant decrease in the abundance of two of their main preys, the nototheniids Notothenia rossii and ... Gobionotothen gibberifrons, owed to the intensive industrial fishing in the area in the late 1970s. Author(s ...
Meeting Document : WG-FSA-12/05 : Autor(es): R. Casaux and E. Barrera-Oro (Argentina)
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Testing for genetic differentiation between two size classes of the starry skate (Amblyraja georgiana)
Abstract: Two size classes of A. georgiana have been described in by-catch fishing data reported ... in the catch data from the Ross Sea fisheries. We extracted DNA from A. georgiana samples from both ... size classes collected by Scientific Observers in the Ross Sea. We determined the DNA sequences of five ... among the samples of A. georgiana that were collected in the Ross Sea region, and the data did not ...
Meeting Document : WG-FSA-12/53 : Autor(es): P. Ritchie and A. Fleming (New Zealand)
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Steepness for Antarctic toothfish (Dissostichus mawsoni) based on life history
-recruitment relationship, it is deeply rooted in the biology of each species. Furthermore, specifying ... points that are commonly used in fisheries management. Thus, one cannot pick an arbitrary value of ... steepness in a stock assessment. We take the first step towards a consistent treatment of steepness for ... estimates of steepness and their use in stock assessments. Author(s): M. Mangel, J. Brodziak and G.M ...
Meeting Document : WG-FSA-14/32 : Autor(es): M. Mangel, J. Brodziak and G.M. Watters (USA)
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Population variability of biological parameters of penguins along the Antarctic Peninsula
parameters and factors affecting penguins biology along the Antarctic Peninsula is presented in order to ... contribute to the general knowledge of penguin biological variation, to generate a data baseline in the ... parameters, higher abundance of ectoparasites and a higher stress in northern populations. Contaminant levels ... and genotoxic damage are associated with human activity mostly located in the northern populations as ...
Meeting Document : WG-EMM-2019/72 : Autor(es): A. Barbosa
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ECOSYSTEM SERVICES OF THE SOUTHERN OCEAN
resources, and the regulation of global climate and sea level. Assessing ecological processes in terms of ... the Southern Ocean ecosystem is generally under-represented in assessments of ecosystem services at ... making processes within the ATS are in many ways pre-adapted to deliver evidence-based policy which takes ... gathering work which has been conducted to support decision making in the Antarctic context could relatively ...
Meeting Document : WG-EMM-11/21 : Autor(es): S.M. Grant, S.L. Hill and P.N. Trathan (UK)
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A proposal for streamlining the work of the Scientific Committee for the Conservation of Antarctic Marine Living Resources
in different working groups. There is also a need to give time to emerging issues for which there is ... insufficient time at present in the existing working groups, such as consideration of marine protected areas in ... the use of marine protected areas in the CCAMLR context, ii) Development of assessment methods – to ... Fishing could be spread across all three with a more dedicated report in the Assessment working group as ...
Meeting Document : WG-EMM-05/35 : Autor(es): A.J. Constable (Australia)
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Satellite tracking of black-browed and light-mantled sooty albatrosses from Heard Island and potential interactions with fisheries
foraged on the shelf break within 150 km of Heard Island, and focused 75% of their foraging time in waters ... date in the longline fishery), although in 2005 seven black-browed albatrosses were killed in the ... a further 5% went beyond either EEZ into the high seas north and east of Heard Island. In contrast ...
Meeting Document : WG-FSA-05/14 : Autor(es): K. Lawton, R. Kirkwood and G. Robertson (Australia)
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Antarctic fur seal population dynamics update and assessment of census error at SSSI No. 32, Livingston Island, South Shetlands, Antarctica (2000/2001)
of Antarctic fur seals, Arctocephalus gazella, in the South Shetland Archipelago. Since all censuses ... was developed for assessing uncertainties in the estimates of the counts (inter and intra-observer ... identified and corresponded to beaches in which variation cannot be entirely attributed to inter-observer ... censuses in a considerable way. These factors should all be assessed and taken into account when ...
Meeting Document : WG-EMM-01/49 : Autor(es): R. Hucke-Gaete (Chile)
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EFFECT OF STERN-SETTING TUNNEL ON THE SINK RATE OF INTEGRATED WEIGHT LONGLINE (IWL)
steel tube, built in to the longliner during a dry-dock refit. The tube angles downwards from where the ... line exits the baiting machine, which is positioned in the aft section of the stern setting deck, to ... longlines, conforming to the CCAMLR standard specified in conservation measure 24-02, is planned to be ... tested in a series of sets using time-depth recorders during current sea-trials and approximately three ...
Meeting Document : WG-FSA-08/38 : Autor(es): I. Hay and G. Robertson (Australia)