Search results
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Relative abundance of large whales around South Georgia
whaling in 1965, we report three independent sighting databases: a cruise in 1997, observations from Bird ... growing at 7% per annum. In contrast, blue and fin whales appear to be less abundant. A single blue whale ... mother-calf pair was observed off the Shag Rocks in February 1997. Extirpation of animals from this ... humans, an unusually high rate of natural mortality, habitat change such as alteration in sea ice ...
Meeting Document : WG-EMM-99/34 : Author(s): M.J. Moore (USA), S.D. Berrow (UK), B.A. Jensen (USA), P. Carr (UK), R. Sears (Canada) and V.J. Rowntree, R. Payne and P.K. Hamilton (USA)
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Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins
Abstract: Predator-prey interactions play an important role in determining the dynamics of ... pelagic ecosystems. Human intervention in such interactions can have effects that cascade throughout these ... Antarctic krill, a keystone prey species in the Southern Ocean food web. It has been difficult to evaluate ... the surface distribution of penguins and krill distributed in the 30- 40 m depth layer; no spatial ...
Meeting Document : WG-Joint-94/12 : Author(s): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)
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Distribution of Antarctic krill concentrations exploited by Japanese krill trawlers and minke whates
krill fishing and minke whaling (Balaenoptera acutorostrata) data was investigated in relation to bottom ... sectors. In early summer (December) the areas of operation for both fisheries were affected by the ... latitudinal position and shape of the pack-ice edge. Harvesting was frequently conducted in the vicinity of a ... more southerly positioned pack-ice edge. Whaling was also undertaken in the embayments created by the ...
Meeting Document : SC-CAMLR-VIII/BG/31 : Author(s): Delegation of Japan
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Admiralty Bay (South Shetland Islands) - long-term marine monitoring program
Abstract: Dynamic climate changes have become noticeable in recent decades, especially in the ... biotic elements in Admiralty Bay. In this paper we provide WG-EMM with an update on proposed project ... ) marine monitoring program in the region of Admiralty Bay was started. Biological, chemical and geological ...
Meeting Document : WG-EMM-15/47 : Author(s): A. Panasiuk-Chodnicka, M. Korczak-Abshire, M.I. Żmijewska, K. Chwedorzewska, E. Szymczak, D. Burska, D. Pryputniewicz-Flis and K. Łukawska-Matuszewska (Poland)
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Beach debris survey, Main Bay, Bird Island, South Georgia, 2002/03
recorded in 2001/02 and the lowest levels of beach debris during summer since the first year of recording ... in 1990/91. The distribution of debris between summer and winter was similar to the previous year ... (3.6 kg) was a decrease of 1 kg since last year. There was a decrease in the proportion of nylon ... reduction in fishing gear found on the beach throughout the recording period, particularly during the winter ...
Meeting Document : SC-CAMLR-XXIII/BG/13 : Author(s): Delegation of the United Kingdom
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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 : Author(s): R. Hucke-Gaete (Chile)
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Seabird by-catch by tuna longline fisheries off southern Africa, 1998–2000
Abstract: The incidental mortality of seabirds in tuna longline fisheries is estimated for the ... bycatch differed regionally in relation to the numbers of birds attending vessels. In international waters ... seabirds are killed annually in South Africa’s EEZ, of which 70% are albatrosses. Confidence in these ...
Meeting Document : WG-FSA-01/28 : Author(s): P.G. Ryan, D.G. Keith and M. Kroese (South Africa)
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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 : Author(s): I. Hay and G. Robertson (Australia)
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Possible effects of different levels of fishing on krill on predators - some initial modelling attempts
Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... developed, in which krill abundance fluctuations impact the predator population, but not vice versa ... . Computations based on this model indicate that variability in the annual recruitment of krill results in ... predator population dynamics information in the context of the models developed, and about the model1ing of ...
Meeting Document : WG-KRILL-93/43 : Author(s): D.S. Butterworth and R.B. Thomson (South Africa)
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Annual Report from SCAR to CCAMLR
). SCAR looks to CCAMLR as a key partner in this initiative. Three new potential Scientific Research ... , Thresholds and Resilience (AntETR), State of the Antarctic Ecosystem (AntEco) and Antarctic Climate in the ... /). In particular, the SCAR-MarBIN data portal continues to gather information on marine biodiversity in ... in mutually beneficial ways. For further details see www.scar.org Author(s): Submitted by SCAR Title ...
Meeting Document : CCAMLR-XXX/BG/15 : Author(s): Submitted by SCAR