Search results
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Exploitation of mesoscale oceanographic features by grey-headed albatross Thalassarche chrysostoma in the southern Indian Ocean
association with mesoscale oceanographic features, as identified by sea surface height anomalies, in the ... southern Indian Ocean. During incubation, most birds foraged to the north of the island, at the edges of ... anomalies created by the Agulhas Return Current in the Subtropical Convergence and the Subantarctic zones ... . In contrast, during chick-rearing all tracked birds foraged to the southwest of the island, at the ...
Meeting Document : WG-FSA-01/12 : Author(s): D.C. Nel, J.R.E. Lutjeharms, E.A. Pakhomov, I.J. Ansorge, P.G. Ryan and N.T.W. Klages (South Africa)
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Swimming speed and allocation of time during the dive cycle of Antarctic fur seals
Abstract: During sustained bouts of diving, predators like fur seals may adjust the time they ... spend diving to maximise the time they can spend foraging and minimise the time spent at the surface ... between dives. To examine this, swimming speeds and the time allocated to different parts of the dive ... than was exhibited by animals when swimming at the surface. Swimming speeds were fastest during the ...
Meeting Document : WG-EMM-95/25 : Author(s): Bevan, R.M., Boyd, I.L., Reid, K.
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Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia
Abstract: This paper investigates the influence of mixing of fish, and the uneven distribution of ... tag placements and recapture effort, on bias in the Petersen estimate. It does so by constructing a ... linear model of the South Georgia toothfish fishery, simulating fish movements within this system and ... overlaying various combinations of tagging and recapture effort to investigate bias. The fishable grounds ...
Meeting Document : WG-FSA-SAM-05/6 Rev. 1 : Author(s): D.J. Agnew, G.P. Kirkwood, J. Pearce and J. Clark (United Kingdom)
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Ecosystem modelling for the Antarctic krill fishery
the Antarctic ecosystem. This species serves as prey for many organisms in the ecosystem and has also ... been the target of an small industrial fishery since the mid 1970s. New quotas have recently been set ... but there is concern that the reduction in krill biomass due tome fishery may have impacts on other ... krill predators such as penguins, seals and whales. In order to evaluate the effects of krill fishing on ...
Meeting Document : WG-EMM-01/65 : Author(s): T. Antezana, J. Cornejo, E. Bredesen, P. Faundez (Chile), A.W. Trites and T. Pitcher (Canada)
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RELEVANT ISSUES IN REGARDS TO THE MANAGEMENT OF ANTARCTIC KRILL FISHERIES IN AREA 48
Abstract: In 2008, the Ukraine submitted a paper to the Scientific Committee highlighting the ... magnitude of the scientific uncertainties and data gaps affecting the subdivision of precautionary catch ... limits among SSMUs in Area 48 (CCAMLR- XXVII/43). The Ukraine suggested that a research plan was ... the data obtaining process financially. The discussion of that issue at 2009 WG-EMM meeting will be ...
Meeting Document : WG-EMM-09/31 : Author(s): L. Pshenichnov and G. Milinevsky (Ukraine)
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Preliminary results of a dedicated cetacean sighting vessel-based krill survey in East Antarctica (115°–130°E) during the 2015/16 austral summer season
Abstract: At the EEM-15, it was agreed that detailed information on survey design of the ... dedicated cetacean sighting vessel-based krill (CSVK) survey by Japan, would be submitted with data from the ... first of these annual surveys to the next meeting of WG-SAM (2016), to assess the survey design, in ... particular the trade-offs between the primary goal of gathering information on cetaceans versus the secondary ...
Meeting Document : WG-SAM-16/38 : Author(s): K. Matsuoka, A. Wada, T. Isoda, T. Mogoe and L.A. Pastene
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Size and stage composition of age class 0 Antarctic krill (Euphausia superba) in the ice-water interface layer during winter/early spring
Abstract: The condition and survival of Antarctic krill (Euphausia superba) strongly depends on ... unknown. The aim of this study was to improve the understanding of the krill's interaction with the ... sea ice habitat during winter/early spring by conducting large-scale sampling of the ice-water ... interface (0-2 m) and comparing the size and developmental stage composition of krill with the pelagic ...
Meeting Document : WG-EMM-16/P16 : Author(s): F. Schaafsma, C. David, E. Pakhomov, B. Hunt, B. Lange, H. Flores, J.A. van Franeker
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IMPLEMENTATION OF FOOSA (KPFM) IN THE EPOC MODELLING FRAMEWORK TO FACILITATE VALIDATION AND POSSIBLE EXTENSION OF MODELS USED IN EVALUATING KRILL FISHERY HARVEST STRATEGIES THAT WILL MINIMISE RISK OF LOCALISED IMPACTS ON KRILL PREDATORS
-structured harvest strategies for krill, has been implemented within the EPOC modelling framework. It also ... shows how the parameters developed for use in FOOSA can be adapted for use in EPOC. The paper has three ... main parts – an outline of the structure of EPOC, consideration of the general FOOSA structure that ... needs to be implemented and a description of the implementation of FOOSA in EPOC. The latter section ...
Meeting Document : WG-SAM-08/15 : Author(s): A. Constable (Australia)
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Has climate change promoted genetic fragmentation in the ice-dependent fish Pleuragramma antarcticum?
Abstract: Pleuragramma antarcticum is the only Antarctic notothenioid characterized by a complete ... pelagic life cycle and plays a major trophic role in the coastal Antarctic marine ecosystem. A previous ... genetic study investigated the population structure of this species, but used mitochondrial DNA sequencing ... pools, and population structure. In the present study, we used 16 EST-linked microsatellites to ...
Meeting Document : WG-FSA-13/67 : Author(s): C. Agostini, T. Patarnello (Italy), J. Ashford, J. Torres (USA) and L. Zane (Italy)
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Draft Research and Monitoring Plan for the South Orkney Islands Southern Shelf (MPA Planning Domain 1, Subarea 48.2)
monitoring activities that will help inform and support the management of the South Orkney Islands Southern ... research consistent with the objectives of the MPA, and monitoring that will help evaluate the extent to ... which these objectives are being achieved. We also encourage the initiation of other research that is ... consistent with the objectives of the MPA. In 2013, a preliminary draft MPA Report was developed for the ...
Meeting Document : WG-EMM-14/24 : Author(s): Delegation of the European Union