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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Variations in the diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari) at South Georgia (Antarctic)
Abstract: The diet composition and feeding intensity of mackerel icefish (Champsocephalus gunnari ... ) around Shag Rocks and the mainland of South Georgia was analyzed from c. 8,700 stomachs collected in ... superba), the hyperiid Themisto gaudichaudii, mysids (primarily Antarctomysis maxima) and in 1985 also ... Thysanoessa species. The proportion of krill and Themisto in the diet varied considerably between the three ...
Meeting Document : WG-FSA-93/24 : Author(s): K.-H. Kock and S. Wilhelms (Germany), I. Everson (United Kingdom) and J. Gröger (Germany)
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Gentoo penguin (Pygoscelis papua) population winter/summer behaviour and CEMP time-lapse cameras validation at Galindez Island in the 2018/19 season
during 2018-19 season. The detailed observation of bird arrival, nesting, hatch and crèche has been ... provided in two colonies at GAI CEMP site at Galindez Island nearby the Vernadsky station. We inform on the ... results of visual survey of penguin population and penguin count. During the 2018/19 season biologist ... of gentoo GBV and GPP sites. The results of visual observations of penguin population changes are ...
Meeting Document : SC-CAMLR-38/BG/13 : Author(s): Delegation of Ukraine
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Expert Workshop on Pelagic Spatial Planning for the eastern subantarctic region (Domains 4, 5 and 6)
Abstract: The “Expert Workshop on Pelagic Spatial Planning for the eastern subantarctic region ... (Domains 4, 5 and 6)” was held in Cape Town (South Africa) between 26th and 30th August 2019. The workshop ... the Planning Domains using geographic, biological and oceanographic features. Distributions of ... showing latitudinal patterns of communities for the pelagic species. The importance of frontal zones such ...
Meeting Document : SC-CAMLR-38/BG/29 : Author(s): A.B. Makhado, A. Lowther, P. Koubbi, I. Ansorge, C. Brooks, C. Cotté, R. Crawford, S. Dlulisa, F. d’Ovidio, S. Fawcet, D. Freeman, S. Grant, J. Huggett, M. Hindell, P.A. Hulley, S. Kirkman, T. Lamont, M. Lombard, M.J. Masothla, M.-A. Lea, W.C. Oosthuizen, F. Orgeret, R. Reisinger, T. Samaai, S. Sergi, K. Swadling, S. Somhlaba, A. Van de Putte, C. Von de Meden and D. Yemane
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Trends in bird and seal populations as indicators of a system shift in the Southern Ocean
Abstract: Although world oceans have been warming over the past 50 years, the impact on biotic ... components is poorly understood because of the difficulty of obtaining long-term data sets on marine ... organisms. The Southern Ocean plays a critical role on global climate and there is growing evidence of ... over the past 50 years in the southern Indian Ocean, the increase starting in mid 1960s and stabilizing ...
Meeting Document : WG-EMM-03/53 : Author(s): H. Weimerskirch, P. Inchausti, C. Guinet and C. Barbraud (France)
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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