Search results

1. Results of fish stock assessment survey, South Georgia, December 1987 - January 1988

   fishery was supported mostly by the catch of Notothenia rossii, which yielded hundreds of thousands of ... striking. By 1985 the stock was estimated to be less than 10% of its pristine size (Kock 1985). The ... fishery is presently supported by catches of Champsocephalus gunnari, but its decline is also evident ... and 1980/81 abundance estimates decreased by as much as two orders of magnitude (Kock et al. 1985 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 19-52 : Author(s): McKenna, Jr., J.E. and S.B. Saila

2. Phytoplankton distribution in the mixed layer: implication to krill abundance

   only be. evaluated by a Lagrangian type model. They also note that " .. the power of the Lagrangian ... knowledge about how complex trajectories affect photosynthetic performance by phytoplankton; we need to ... interaction can be "directly" evaluated by the model. Recent advancements of computer technology make the ... was discussed by Weber and EI-Sayed (1985). Hence, we think that studying the distribution of the ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Author(s): Yamazaki, H. and T.R. Osborn

3. Response to Everson (2008)

   both crucial input parameters used by CCAMLR to set precautionary catch limits for krill (Hewitt et ... generally are being used increasingly by ecologists (e.g. Ellison, 2004), and MaxEnt methods are ... function of available effort from the amount (length) of cruise track that could be sampled by the ... and Hampton, 1989) that Dr Everson recognises. The MaxEnt approach, by contrast, takes explicit ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 195–198 : Author(s): Brierley, A.S., B.G. Heywood and S.F. Gull

4. Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87

   B nepByIO oqepeAb pe3YJIbTaTOM nepHOAHqeCKHX ~JIYKTyaQHH B - 187 - nnOTHOCTH 6HOMaCCbl 3anaCa ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Author(s): Mucha, M. and W. Ślósarczyk

5. A simple approach for calculating the potential yield of krill from biomass survey results

   estacionales tienen menos importancia. 1. IN1RODUCTION One of the topics considered by the Second Meeting ... yields an estimate of 0 = 4, which corresponds to a three month growth period, followed by nine months ... alternative model (equivalent to one with no seasonal component, as investigated by Beddington and Cooke) are ... ) - see Appendix 1], they are unaffected by the values chosen for R and ex, so that these two parameters ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Author(s): Butterworth, D.S., A.E. Punt and M. Basson

6. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   strategies, including both adaptive and robust control. Adaptive control aims to reduce uncertainty by ... Doyle, 1997; Rawlings and Mayne, 2009). The management procedure approach used by fisheries ... (MPE) is a sim- ulation method that assesses the likely performance of MPs by using them to control ... specified objectives by adjusting catch or effort. MPE generally attempts to find an HCR which will make ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Author(s): Hill, S.L. and M. Cannon

7. A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty

   needs of dependent species (usually predators). These objectives have been endorsed by CCAMLR for ... being calculated by numerical integration over a one-year period. The model is initialised by setting ... projected through one year by numerical integration of the basic population differential equations. Catch ... that: Expressing natural mortality by an average level, which can be modified by relative patterns ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Author(s): Constable, A. and W.K. de la Mare

8. Spawning locations of mackerel icefish at South Georgia

   ~ibition on fishing during what is assumed to be the spawning season. These provisions were considered by ... . Olsen (1955), citing information in papers by Liinnberg (1905), Norman (1938) and Nybelin (1947 ... place close inshore or in the fjords. Added weight was given to these conclusions by Kock (1981), who ... and Shag Rocks Shelf during demersal fish surveys; and 0 commercial fisheries operated by Poland ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Author(s): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock

9. Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993

   92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... biomass estimates could be useful. This paper presents such a table, augmented by 1993 survey results ... , for consideration by the Working Group at its 1993 meeting. DATA SOURCES Macaulay et al. (1984 ... conducted by Macaulay in the austral summers of 1981, 1984, 1987,1988 and 1989, when normalised to a ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Author(s): Hewitt, R.P. and D.A. Demer

10. Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea

    of 4.0 million tonnes was adopted by CCAMLR for FAO Statistical Area 48 (CCAMLR, 2000) (for a ... the behaviour of krill fi shing vessels (Constable and Nicol, 2002). This approach was endorsed by ... were endorsed by the Scientifi c Committee (SC-CAMLR, 2002) and adopted by the Commission, which then ... that krill catches be reported at a scale of 10 by 10 n mile squares by 10-day periods at the end of ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins

Pages