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1. A study on calibration for commercial echosounder using bottom backscattering strength in Antarctic

   Abstract:  In this study, we calibrated a commercial echosounder (ES70) installed on a krill ... fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method ... . 38kHz and 120kHz were used for the calibration, and krill swarm signals, obtained from multi frequencies ... by bottom backscattering strength, since the proportion of krill swarm signals within 2 dB < S V120kHz ...

   Meeting Document : SG-ASAM-17/P01 : Author(s): S.-G. Choi, H. Lee, K. Lee and J. Lee

2. Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, in late summer of years 1994–97, Dr E. Holmberg surveys

   ;Q" (%) methods. Krill (Euphausia superba) followed by the amphipod hyperiid Themisto gaudichaudii ... such as mysids and Thysanoessa sp., which are known as important alternative food in years of krill scarcity ... 't show a selectivity pattern for any of the prey items. The availability of krill ... of krill scarcity; intermediate in 1995, below the historical years of high abundance; and high in 1946 ...

   Meeting Document : WG-FSA-97/48 : Author(s): Barrera-Oro, E., Marschoff, E., Casaux, R.

3. On dispersion of different pelagic organisms, forming Antarctic backscattering in South Sandwich subarea during January–February 2000

   of distribution nectonic organisms, non-krill zooplanctonic fraction and krill as detected my multi-frequency ... layers as follows: krill predominatingly contributes to the antarctic pelagic community within proving ... is distributed in the Weddell Sea waters. Though krill and zooplankton major biomasses are concentrated in upper ... . A comparative analysis of mean stratum Sa values obtained for krill and myctophid fishes indicated that biomass ...

   Meeting Document : WG-EMM-01/61 : Author(s): S.M. Kasatkina and A.P. Malyshko (Russia)

4. Importance of myctophid fish distributions for formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

   and overnight foragers during Leg II. Highest krill (Euphausia superba) densities regularly occurred ... in the offshore/slope regions over on the shelf: (1) krill were present near the surface throughout the day so ... that only shallow diving was required to catch krill even in the day time; (2) krill tend to be larger ... abundant areas for krill) over the shelf region (more abundant areas for krill). Author(s):  Bengtson, J.L ...

   Meeting Document : WG-EMM-95/87 : Author(s): Bengtson, J.L., Kawaguchi, S., Jansen, J.K., Takao, T., Meyer, W.R., Baba, N., Hiruki, L.M., Boveng, P., Cameron, M.F., Ogishima, T., Ichii, T., Naganobu, M.

5. Reconciling fisheries with conservation: three examples from the Southern Ocean

   to fisheries on Antarctic krill (Euphausia superba), mackerel icefish (Champhsocephalus gunnari) and Patagonian ... and unresolved concerns. While the current fishery for krill is small compared to the precautionary limit ... established by CCAMLR, fishing effort concentrated near colonies of land-breeding krill predators may pose ... a threat as well as those posed by the broader-scale influence of climatic cycles and trends on krill ...

   Meeting Document : WG-EMM-04/48 : Author(s): R.P. Hewitt (USA), I. Everson (United Kingdom) and C.D. Jones (USA)

6. Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia

   are the two main land-based krill Euphausia superba consumers in the northern Scotia Sea. Using a combination ... top predators during the austral summer and autumn of 2004. Krill availability derived from acoustic ... surveys was low during summer, increasing in autumn. During the breeding season, krill occurred in 80 ... antarctica), with krill (33%) and amphipods (Themisto gaudichaudii; 21%) also occurring. When constrained ...

   Meeting Document : WG-EMM-10/P07 : Author(s): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan

7. Inter-annual variation in condition index of the mackerel icefish Champsocephalus gunnari

   . High condition indices, indicative of good feeding conditions, were present when krill were abundant ... in the region. Years when krill were scarce and condition index was consequently low, were consistent with years ... when indices from land-based krill predators also indicated krill were scarce. Author(s):  Parkes ... indices, indicative of good feeding conditions, were present when krill were abundant in the region. Years ...

   Meeting Document : WG-EMM-96/43 : Author(s): Parkes, G., Everson, I., Kock, K.-H.

8. USING ECOSYSTEM STRUCTURE TO IDENTIFY FINER-SCALE SSMUS FOR OCEANIC AREAS IN SUBAREAS 48.1 TO 48.3

   Abstract:  One of the main issues in the management of the krill fishery is finding a spatial ... are the location of 72% of the estimated krill biomass, 61% of the estimated consumption of krill by predators ... studies, and from the concentration of krill catches in limited parts of the oceanic SSMUs. A more ... and the ecosystem. Krill distribution during the CCAMLR 2000 synoptic survey is an indicator of ecosystem structure ...

   Meeting Document : WG-EMM-11/18 : Author(s): S.L. Hill and J. Silk (UK)

9. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   subject to commercial fishing since the early 1970s. They are known to feed predominantly on krill ... to provide a good indicator of local krill density. The index is likely to be little affected ... by the reproductive cycle unless there is high krill availability during the months around the spawning time and even ... in hill density and therefore can provide indications of short term variations in krill availability ...

   Meeting Document : WG-EMM-00/44 : Author(s): I. Everson (United Kingdom) and K.-H. Kock (Germany)

10. Diet composition and observations on reproduction of Champsocephalus gunnari in Subarea 48.3 in March/April 1996, Dr Eduardo Holmberg survey

    ; (%) methods. Krill was by far the main food around South Georgia and Shag Rocks (F= 85%, Q= 99%). Other prey ... items, known as an important alternative food in years of krill scarcity, were ingested only ... higher than those reported for the 1991 and 1994 years of krill shortage. The analysis of the ovarian ... which may be related with a large availability of food (= krill). It is suggested that krill was present ...

    Meeting Document : WG-FSA-96/28 Rev. 1 : Author(s): Marschoff, E., Barrera-Oro, E., Casaux, R.

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