Search results
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A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)
candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... sector modelled are considered, and their performance in response to a variety of ways in which the ... . research vessel surveys) need to be considered to monitor changes in the number, distribution and size of ... Abstract: A model is set up for the operation (which includes both searching and fishing) of a ...
Meeting Document : WS-KCPUE-89/04 : Author(s): D.S. Butterworth (South Africa)
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A simulation study of krill fishing by an individual JAPANESE trawler
candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... sector modelled are considered, and their performance in response to a variety of ways in which the ... . research vessel surveys) need to be considered to monitor changes in the number, distribution and size of ... Abstract: A model is set up for the operation (which includes both searching and fishing) of a ...
Meeting Document : SC-CAMLR-VII/BG/37 : Author(s): D.S. Butterworth (Invited Expert)
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 1995/96
revealed a total of 710 items, 2% less than the record total of 725 items in 1994/95. However, whereas the ... total amount of debris collected during the winter (April-September) was 40% lower than in 1994/95, the ... continuing high levels of man-made debris and the recent rapid increase in levels during summer, coinciding ... with increases in entanglement of Antarctic fur seals, is of growing concern. Furthermore, despite the ...
Meeting Document : CCAMLR-XVI/BG/4 : Author(s): Delegation of the United Kingdom
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Measurement of ocean temperatures using instruments carried by Antarctic fur seals
South Georgia. In particular, the relationship between on- and off-shelf waters showed larger amounts of ... Abstract: The study aimed to test the utility of instruments deployed on marine mammals for ... measuring physical oceanographic variation and, using this method, to examine temperature variation in the ... recorders (TDRs) fitted to lactating Antarctic fur seals foraging from the coast of South Georgia ...
Meeting Document : WG-EMM-01/56 : Author(s): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)
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Developing priority variables (“ecosystem Essential Ocean Variables” – eEOVs) for observing dynamics and change in Southern Ocean ecosystems
support assessments. In this paper we outline the rationale, including establishing a set of criteria, for ... and use of eEOVs in an observing system in the Southern Ocean, noting that existing operations and ... , Atlantic and Indian. Lastly, we discuss the importance of simulation modelling in helping with the design ... of the observing system in the long term. Author(s): A.J. Constable, D.P. Costa, O. Schofield, L ...
Meeting Document : WG-EMM-16/P11 : Author(s): A.J. Constable, D.P. Costa, O. Schofield, L. Newman, E.R. Urban Jr., E.A. Fulton, J. Melbourne-Thomas, T. Ballerini, P.W. Boyd, A. Brandt, W. de la Mare, M. Edwards, M. Eléaume, L. Emmerson, K. Fennel, S. Fielding, H. Griffiths, J. Gutt, M.A. Hindell, E.E. Hofmann, S. Jennings, H.S. La, A. McCurdy, B.G. Mitchell, T. Moltmann, M. Muelbert, E. Murphy, T. Press, B. Raymond, K. Reid, C. Reiss, J. Rice, I. Salter, D.C. Smith, S. Song, C. Southwell, K.M. Swadling, A. Van de Putte and Z. Willis
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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 ... . 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 ... of the parameters of predator survival rates as functions of krill abundance, by considering a krill ...
Meeting Document : WG-KRILL-93/43 : Author(s): D.S. Butterworth and R.B. Thomson (South Africa)
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An inter-laboratory comparison of ages estimated for Dissostichus eleginoides using otoliths
full age range, indicating differences in the criteria used to interpret the first few years of age ... , possibly in identification of the first annulus. Author(s): J. Ashford (United Kingdom) and P. Horn (New ... Abstract: To examine consistency between laboratories in age estimation of Patagonian toothfish ... , otoliths were taken from 100 fish caught in the South Atlantic, and transverse sections prepared by baking ...
Meeting Document : WG-FSA-99/56 : Author(s): J. Ashford (United Kingdom) and P. Horn (New Zealand)
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Beach debris survey – Main Bay, Bird Island, South Georgia, 1997/98
revealed a total of 430 items, 49 percent more than the total of 289 items in 1996/97. The increase of the ... of items collected in the summer was 310, an increase of 72 percent from the 1996/97 total of 180 ... of which clearly came from fishing vessels. The lower levels of debris collected in the winter months ... Abstract: The eighth year of surveys of beach man-made debris at Bird Island, South Georgia ...
Meeting Document : CCAMLR-XVIII/BG/6 : Author(s): Delegation of the United Kingdom
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Ocean acidification and the Southern Ocean
the Southern Ocean. Even under the more conservative IPCC S650 scenario, which assumes that atmospheric CO2 ... will be undersaturated throughout the Southern Ocean. Even under the more conservative IPCC S650 scenario, which assumes ...
Meeting Document : CCAMLR-XXIX/BG/24 : Author(s): ASOC Observer
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Uncertainty in green weight estimates from Norwegian krill fishing vessels
an issue raised repeatedly within CCAMLR for a number of years, resulting in a modification to the C1 ... are carried out in practice and transferred to the C1 forms. We also present a brief evaluation of ... form implemented for the fleet in 2012. There are at present three Norwegian vessels operating in the ... krill fishery for Euphausia superba in the Antarctic. These vessels have in recent years contributed to ...
Meeting Document : WG-EMM-13/41 : Author(s): G. Skaret and T. Knutsen (Norway)