Documents

Document Number	Title	Agenda Item(s)
WS-AREA 48-98/1 More Info	Provisional Agenda for the 1998 Area 48 Workshop Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/10 More Info	Sea surface temerature anomalies near South Georgia: relationships with the South Atlantic and the Pacific El Niño regions P. Trathan and E.J. Murphy (UK) Abstract: The sea surface temperature dataset of Reynolds and Smith (1994) was used to describe variability around South Georgia. High levels of autocorrelation were evident in the sea surface temperature anomalies, with periodicity evident at a lag period of 4 years. To the north of the island significant autocorrelation was also evident at a lag period of 1 year; though this was restricted to an area Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/11 More Info	Concordance of inter-annual fluctuations in densities of krill around South Georgia and Elephant Islands: biological evidence of same-year teleconnections across the Scotia Sea A.S. Brierley (UK), D.A. Demer, R.P. Hewitt (USA) and J.L. Watkins (UK) Abstract: Acoustic estimates of the densities of Antarctic krill, Euphausia superba, in areas around South Georgia (SG) and Elephant Island (El) were compared for seven austral summers between 1981 and 1997. Estimated densities of krill at El were most often higher than at SG, although this may simply have been a function of differences in survey and data analysis techniques used at each site. More Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/12 More Info	Indices of predator performance from Signy Island, South Orkney Islands 1979–1997 A.S. Lynnes and A.W.A. Murray (UK) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/13 More Info	Indices of predator performance from South Georgia 1976–1998 D.R. Briggs, K. Reid, J.P. Croxall, I.L. Boyd and D.J. Brown (UK) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/14 More Info	Combined indices of predator performance at South Georgia 1976–1998 Higher Predators Section, British Antarctic Survey (United Kingdom) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/15 More Info	Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets K. Reid, J. Watkins, J. Croxall and E. Murphy (UK) Abstract: Central to understanding krill population dynamics is knowledge of their population structure. To examine this we used length-frequency distributions from 142 weeks of sampling (n= 23996 krill) of 3 predator species breeding at South Georgia and 12 weeks of sampling (n = 10 252 krill) from scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/16 More Info	Environmental variability and the behavioural dynamics of Antarctic fur seals in the South Atlantic I.L. Boyd (UK) Abstract: Variability in the reproductive performance of marine predators may be a result of physical forcing by large-scale oceanographic variability. Time lags, remoteness from the epicentre of a physical process and the simultaneous action of multiple physical processes often mean that it is difficult to link variability in predator performance with specific measurements of oceanographic variability Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/17 More Info	Diet, provisioning and productivity responses of predators to differences in availability of Antarctic krill J.P. Croxall, K. Reid and P.A. Prince (UK) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/18 Rev. 1 More Info	Antarctic fur seal (Arctocephalus gazella) pup growth rates obtained at Cape Shirreff, Livingston Island, South Shetlands: 1994/95 to 1997/98 (CEMP Index C2, Procedure B) R. Hucke-Gaete, V. Vallejos and D. Torres (Chile) Abstract: Antarctic fur seal, Arctocephalus gazella, pup growth rates were measured using CEMP Standard Methods (C2 - Procedure B) over four consecutive Austral summer season (1994/95-1997/98) at CEMP Site and SSSI N°32 Cape Shirreff, Livingston Island, South Shetlands. Every fortnight (15 days) 100 pups (50 of each sex) were weighed by cross-sectional sampling. Pup growth rates were determined from Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/19 More Info	Draft only for discussion at Area 48 workshop: variation in condition of the mackerel icefish I. Everson (UK) and K.-H. Kock (Germany) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/2 More Info	List of participants Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/20 More Info	Population structure and recruitment indices of Euphausia superba around South Georgia J.L. Watkins (UK) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/21 Rev. 1 More Info	IWC whale data indices for CCAMLR Area 48 Worshop S. Reilly, C. Allison, H. Kata and D. Borchers Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/3 More Info	List of documents Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/4 Rev. 1 More Info	Do krill and salp compete? Contrary evidence from the krill fisheries S. Kawaguchi (Japan), W.K. de la Mare (Australia), T. Ichii and M. Naganobu (Japan) Abstract: Salp by-catch and krill discolouration ('green' krill) caused by active feeding on phytoplankton were analysed using logbook data from Japanese krill trawlers operating near the Antarctic Peninsula. Interannual and seasonal variability of the timing, duration and intensity of salp blooms and the presence of green krill were analysed. No relationship between salp density and the proportion of Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/5 More Info	Relationships of Antarctic krill (Euphausia superba Dana) variability with westerlies fluctuations and ozone depletion in the Antarctic Peninsula area M. Naganobu, K. Kutsuwada, Y. Sasai and S. Taguchi (Japan) Abstract: The assessment of environmental processes controlling variability of Antarctic krill (Euphausia superba) is an important subject to clarify the Antarctic marine ecosystem. We have assessed variability of krill recruitment and stock density with hypothesised environmental factors. We demonstrated long-term relationship between Antarctic krill recruitment in the Antarctic Peninsula area and sea- Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/6 More Info	A method for providing a statistical summary of CEMP indices I.L. Boyd and A.W.A. Murray (UK) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/7 More Info	Ecosystem monitoring and management, past, present and future I. Everson (UK) Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/8 More Info	Interannual variability of the South Georgia marine ecosystem: biological and physical sources of variation in the abundance of krill E.J. Murphy, J.L. Watkins, K. Reid, P.N. Trathan, I. Everson, J.P. Croxall, J. Priddle, M.A. Brandon, A.S. Brierley (UK) and E. Hofman (USA) Abstract: Interannual variability is a characteristic feature of the Southern Ocean ecosystem yet the relative roles of biological and physical processes in generating these fluctuations are unknown. There is now extensive evidence that there are years when there is a very low abundance of Antarctic krill (Euphausia superba) in the South Georgia area, and that the variation affects much of the ecosystem Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0
WS-AREA 48-98/9 More Info	Acoustic estimates of krill abundance at South Georgia, 1981–1998 A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK) Abstract: Acoustic estimates of abundance of the Antarctic krill, Euphausia superba, at South Georgia are presented for periods within ten austral summers between 1981 and 1998. This time series includes some previously published estimates arising from cruises where determination of krill density was a primary objective, and estimates derived for the first time here from acoustic data collected as a Read More Submitted By: Admin Admin (CCAMLR Secretariat) Request Meeting Document	0

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WS-AREA 48-98

Agenda