Résultats de la recherche
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Developing a carbon-budget trophic model of the Ross Sea, Antarctica: work in progress
) Title: Developing a carbon-budget trophic model of the Ross Sea, Antarctica: work in progress Approval ... Abstract: We report on the development of a carbon-budget trophic-model of the Ross Sea. We ... provisionally defined the food web of the Ross Sea as having the following functional compartments: birds, seals ... column, ice, and benthic). The simple trophic model requires well over a hundred parameters, each of ...
Meeting Document : WG-EMM-05/18 : Auteur(s): M. Pinkerton, S. Hanchet, J. Bradford-Grieve and P. Wilson (New Zealand)
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Spatial distribution and population structure of juvenile Antarctic toothfish (Dissostichus mawsoni) in the South Shetland Islands (Subarea 48.1)
Abstract: In the present study we provide new insights on the spatial distribution and population ... structure of juvenile D. mawsoni caught during bottom trawl survey on the shelves around the South Shetland ... abundant between 100 and 300 m depth. The sampled population was composed of 150 specimens measuring ... estimated from the age-length keys, spanning from 10 to 5 cm TL. Present data have been discussed in ...
Meeting Document : WG-FSA-18/45 : Auteur(s): M. La Mesa, E. Riginella and C.D. Jones
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Preliminary assessment of mackerel icefish (Champsocephalus gunnari) for the Heard Island Plateau region (Division 58.5.2) based on a survey in May 2004
in the vicinity of Heard Island in May 2004 to provide the information for an assessment of short ... -term annual yield in the 2004/2005 CCAMLR season. This paper provides a preliminary assessment of yield ... Abstract: A survey of Mackerel Icefish, Champsocephalus gunnari,was undertaken in Division 58.5.2 ... using the assessment methods of CCAMLR for SAFAG 21. Author(s): C.R. Davies, T. Lamb, A.J. Constable ...
Meeting Document : WG-FSA-04/77 : Auteur(s): C.R. Davies, T. Lamb, A.J. Constable and R. Williams (Australia)
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Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3
Abstract: Trends in mean length and maturity stage of toothfish were examined using observer data ... statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... from the 1998, 1997 and 1996 toothfish seasons. Toothfish are distributed down the shelf slope in ... . Examination of maturity data suggests that in addition to a major spawning event in late July/August, there ...
Meeting Document : WG-FSA-98/58 : Auteur(s): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)
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Aspects of the distribution and interannual variations in larval fish assemblages at South Georgia, Antarctica
recorded from the whole Southern Ocean. Demersal forms predominate but many of these have extended early ... life histories as pelagic larval and juvenile phases. Only 30 larval stages of the 103 fish species ... occurring at South Georgia have been identified but these represent all of the dominant and economically ... important forms. The larval stages occur in succession throughout the year suggesting niche separation to ...
Meeting Document : WG-FSA-93/09 : Auteur(s): M.G. White (United Kingdom)
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Characterisation of Muraenolepis species by-catch in the CCAMLR Convention Area
: Characterisation of Muraenolepis species by-catch in the CCAMLR Convention Area Approval: Approved ... throughout the CCAMLR Convention Area. There are seven known species in the genus, but more work on the ... taxonomy of the group is needed and the number of species is uncertain. The few biological studies ... published suggest a relatively fast growing, semelparous, life history with a maximum age of 11 years. The ...
Meeting Document : WG-FSA-12/50 : Auteur(s): S. Parker, P. McMillan and P. Marriott (New Zealand)
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Summary of scientific observations in the CAMLR Convention Area for 2011/12
Division 58.5.2. This paper will be updated in full prior to the start of WG-FSA when all of the available ... Observers operating in the Convention Area on board longline and trawl fishing vessels during the 2011/12 ... season. Only data processed by the Secretariat up until 21 September 2012 has been used in this paper ... observations in the CAMLR Convention Area for 2011/12 Approval: Approved ...
Meeting Document : WG-FSA-12/66 Rev. 2 : Auteur(s): Secretariat
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DEMOGRAPHIC STUDIES OF ANTARCTIC KRILL IN THE SOUTH ORKNEY ISLANDS AREA 2009, FIELDWORK AND PRELIMINARY RESULTS
(Euphausia superba) fishery with the vessel “ Saga Sea ” in the South Orkney Islands area. We present ... preliminary results regarding krill demography from the sampling period in January-March, 2009. Total body ... % adult males and ~64% adult females (overall adult sex ratio: 1:4). The proportion of immature krill was ... similar throughout the study period; whereas the proportion of males decreased and the female proportion ...
Meeting Document : WG-EMM-09/10 : Auteur(s): B.A. Krafft and G. Skaret (Norway)
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Competition-mediated prey availability drives Adélie penguin (Pygocelis adeliae) chick size, mass and condition at colonies of differing size in the southern Ross Sea
, mass and condition at colonies of differing size in the southern Ross Sea Approval: Approved ... Abstract: Understanding the relative effects of biotic and abiotic drivers of survival, and the ... interactions between them, is a key component in understanding the factors driving changes in animal ... breeding colonies of different sizes on Ross Island during a period of high environmental variability. The ...
Meeting Document : WG-EMM-13/31 : Auteur(s): A.L. Whitehead (Australia), P. O’B. Lyver (New Zealand), G. Ballard (USA), K. Barton, B.J. Karl (New Zealand), D.G. Ainley, K. Dugger, S. Jennings (USA), A. Lescroël (France) and P.R. Wilson (New Zealand)
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
: Review of CCAMLR activities on monitoring marine debris in the Convention Area Approval: Approved ... Abstract: The current status of national surveys on monitoring of marine debris and their impact ... on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... Database contains data from 11 sites, all within the Area 48 of which there are 3 sites that have data form ...
Meeting Document : SC-CAMLR-XXII/BG/25 : Auteur(s): Secretariat