Résultats de la recherche
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Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
associated life stages of the fish. To this end, we propose to follow the current research style in the ... Abstract: The current season (2014/15) is the final one of the first three-season research which ... began in 2013 in data-poor fisheries. In the present report, catch, effort and biological data recorded ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ...
Meeting Document : WG-SAM-15/05 : Auteur(s): Delegation of Japan
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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
Paper Title: Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula ... censuses on the Antarctic Peninsula are often subject to logistical challenges that preclude nest counts ... being conducted at the peak of egg laying. Additionally, the historical literature includes many census ... counts with non-standard timing. The challenge is, therefore, to correct ‘off-peak’ census counts to make ... additional popula- tion estimation procedures such as photodocu- mentation or sample plots.) At the beginning ... the site) occurs one week after this peak. Note that the peak of egg laying and the maximum census ... count can occur either slightly before or slightly after the peak of egg laying. Although it is ... generally assumed that census counts after the peak of egg laying are biased downward from the standard ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Auteur(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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Foraging movements of the shy albatross Diomedea cauta breeding in Australia; implications for interactions with longline fisheries
to decrease as eggs approached hatching. Adults which were tracked near the end of the breeding ... Abstract: Satellite telemetry was used to identify the foraging zones of Shy Albatrosses Diomedea ... Branca to the south) to assess their level of interaction with longline fisheries. Adult birds from both ... colonies fed locally both in and outside the breeding season. Breeding birds from Albatross Island foraged ...
Meeting Document : WG-FSA-98/33 : Auteur(s): N. Brothers, R. Gales, A. Hedd and G. Robertson (Australia)
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Foraging movements of the shy albatross Diomedea cauta breeding in Australia; implications for interactions with longline fisheries
to decrease as eggs approached hatching Adults which were tracked near the end of the breeding season ... Abstract: Satellite telemetry was used to identify the foraging zones of Shy Albatrosses Diomedca ... Branca to the south) to assess their level of interaction with longline fisheries. Adult birds from both ... colonies fed locally both in and outside the breeding season. Breeding birds from Albatross Island foraged ...
Meeting Document : WG-FSA-97/52 : Auteur(s): Gales, R., Hedd, A., Brothers, N., Robertson, G.
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Revised assessment models for Patagonian toothfish in research block 58.4.3a_1 of Division 58.4.3a, Elan Bank for the years 2005–2014
CCAMLR risk 2 values at 13 tonnes and above for the shallow fishery exceed 50% toward the end of 35 year ... 300 m) CASAL models for stock status assessments of Dissostichus eleginoides in the research block ... 58.4.3a_1 following the recommendations of the last WG-SAM meeting. Total of four runs were carried out ... . Among them three runs were carried out using the latest information on age-length relationship in this ...
Meeting Document : WG-FSA-15/22 : Auteur(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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Changes in biomass of eight species of finfish around the South Orkney Islands (Subarea 48.2) from three bottom trawl surveys
Paper Title: Changes in biomass of eight species of finfish around the South Orkney Islands ... the South Orkney Islands (Subarea 48.2) suffered substantial declines from split-year 1977/78 to 1989 ... /90. The biomass of several species of finfish has been monitored through scientific bottom trawl ... surveys within the 500 m isobath of the South Orkney Islands, most recently by the Federal Republic of ... second most skewed (after L. squamifuons), based on the variability of catch on a haul-by-haul basis ... . However, one should bear in mind that the 1985 survey was conducted only a few years after a substantial ... after the closure of the area for finfishing and about 10 years after the peak of commercial fishing ... potentially the result of low effort directed at finfish in the region after 1982/83 and the final closure ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 53–74 : Auteur(s): Jones, C.D., K.-H. Kock and E. Balguerías
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REVISED AGE AND GROWTH ESTIMATES FOR ANTARCTIC STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA
Abstract: A previous study on the age and growth of Amblyraja georgiana in the Ross Sea suggested ... that is radically different from the published interpretation. By counting fine growth bands in the ... –37 years compared with 14 years). Several pieces of circumstantial evidence support the new ... STARRY SKATE, AMBLYRAJA GEORGIANA, FROM THE ROSS SEA Approval: Approved ...
Meeting Document : WG-FSA-08/21 : Auteur(s): M.P. Francis (New Zealand) and M.J. Gallagher (Ireland)
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Feasibility of lead-radium dating the otoliths of blackfin icefish (Chaenocephalus aceratus) and ocellated icefish (Chionodraco rastrospinosus)
arbitrary target core weight of 0.01 g, near the low end of the range used in this study. It is recommended ... otoliths from these fishes were small and the number of otoliths available low, a whole otolith application ... was necessary as a first look at lead-radium levels. The application was successful as a first step in ... determining the parameters of future applications that would lead to a validation of age. In the current study ...
Meeting Document : WG-FSA-10/17 : Auteur(s): A.H. Andrews, M. La Mesa and J. Ashford (USA)
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
becoming fewer towards the end of the season in August. Killer whale interactions appear to be more ... the levels of depredation caused by killer whales (Orcinus orca) and sperm whales (Physeter ... sizes normally of 4 to 10 animals, and often appear to actively seek out fishing vessels and ‘strip’ the ... . Most interactions from sperm whales occur during May at the start of the season with the sightings ...
Meeting Document : WG-FSA-10/P06 : Auteur(s): J. Moir Clark and D.J. Agnew
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A SIMULATION STUDY TO DETERMINE THE RELATIONSHIP BETWEEN SAMPLING INTENSITY AND PRECISION WHEN ESTIMATING AVAILABILITY FUNCTIONS FOR BREEDING ADÉLIE PENGUIN COLONIES
significant loss of information content. To this end, a simulation study was undertaken to examine how the ... STUDY TO DETERMINE THE RELATIONSHIP BETWEEN SAMPLING INTENSITY AND PRECISION WHEN ESTIMATING ...
Meeting Document : WG-EMM-11/12 : Auteur(s): J. McKinlay and C. Southwell (Australia)