Search results

1. Are penguins and seals in competition for Antarctic krill at South Georgia?

   they are, respectively, the main mammal and bird consumers of Antarctic krill (Euphausia superba). In recent years ... on krill of similar size ranges, dive to similar depths and are restricted in their foraging range at least ... but the concentrations of foraging activity were significantly segregated spatially. The size of krill taken by both ... species was very similar, but over the last 12 years the prevalence of krill in their diets has diverged ...

   Meeting Document : WG-EMM-02/22 : Author(s): K.E. Barlow, I.L. Boyd, J.P. Croxall, K. Reid, U.J. Staniland and A.S. Brierley (United Kingdom)

2. Updating the Antarctic krill biomass estimates for CCAMLR Subareas 48.1 to 48.4 using available data

   Abstract:  We present a novel index of Antarctic krill biomass in CCAMLR subareas 48.1 to 48.4 ... variation was significant (CV=73%) but no systematic change in krill biomass was evident during the period ... this period. These exploitation rates are much lower than the precautionary yield estimate for the krill ... rates are low and that there is no evidence of a systematic change in the krill stock. This evidence ...

   Meeting Document : WG-EMM-15/28 : Author(s): S. Hill, A. Atkinson, C. Darby, S. Fielding (United Kingsom), B. Krafft, O.R. Godø, G. Skaret (Norway), P. Trathan, J. Watkins (United Kingdom)

3. A simulation study of krill fishing by an individual Japanese trawler

   Paper Title:  A simulation study of krill fishing by an individual Japanese trawler Abstract ... krill trawler over a half-month period. It is based on an underlying krill distribution model whose ... model modifications are introduced to eliminate this inconsistency: artificially elongating krill swarms ... of a CPUE form) for krill biomass in the 600 n mile square oceanic sector modelled are considered ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 1–108 : Author(s): Butterworth, D.S.

4. Interannual and seasonal variability of salp by-catch from Japanese krill fishery around the South Shetland Islands

   Abstract:  Data on salp by-catch and green krill were analyzed based on Logbook data of Japanese ... krill trawlers. Inter-annual and seasonal variability of the timing, duration and strength of salp bloom ... were indicated. Salp by-catch and occurrence of green krill seemed to show reverse correlation ... , implying the competition for phytoplankton between krill and salps. Author(s):  Naganobu, M., Ichii ...

   Meeting Document : WG-EMM-97/37 : Author(s): Naganobu, M., Ichii, T., Kawaguchi, S.

5. IMPROVEMENT OF KRILL FISHING NOTIFICATION ACCURACY THROUGH NOTIFICATION FEES

   Abstract:  Improvement of krill fishing notification accuracy through notification fees Delegation ... of the United States The Commission adopted notification procedures for krill fishing in 2005. These procedures ... on krill fishing for the coming season. However, grossly inaccurate estimations of krill catch provided ... krill catch and to provide robust scientific advice. Instead, the Scientific Committee’s scarce ...

   Meeting Document : CCAMLR-XXIX/34 : Author(s): Delegation of the USA

6. Distribution, biomass and abundance of Antarctic krill in the vicinity of Elephant Island during the 1996 austral summer

   during the 1996 austral summer indicate very good krill recruitment from spawning in 1994/5. Areas ... of high krill density were mapped north of King George and Elephant Islands where water depth was greater ... than 200m. One-year old juvenile krill numerically dominated catches during the first survey in January ... adult krill were caught during both surveys north of the islands, but were numerically dominate only ...

   Meeting Document : WG-EMM-96/23 : Author(s): Demer, D.A., Hewitt, R.P., Loeb, V.

7. An 8-year cycle in krill biomass density inferred from acoustic surveys conducted in the vicinity of the South Shetland Islands during the austral summers of 1991/1992 through 2001/2002

   for delineating volume backscattering due to Antarctic krill, adjusting for signal contamination due to noise ... , and compensating for diel vertical migration of krill outside of the acoustic observation window. Intra-and inter ... -seasonal variations in krill biomass density and dispersion were derived from the re-processed data set ... this variability may be attributed to changes in the spatial distribution of krill relative to the survey area ...

   Meeting Document : WG-EMM-03/6 : Author(s): R.P. Hewitt, D.A. Demer and J.H. Emery (USA)

8. A simulation study of krill fishing by an individual Japanese trawler

   ) of a Japanese krill trawler over a half-month period, and the output is compared to statistics from a sample ... , and their performance investigated in response to six different ways in which the overall krill biomass in a 600 n. mile ... be reliable only for detecting changes in within-concentration krill distribution parameters. Other approaches ... and density of krill concentrations. Priority for further analyses should be given to examination of existing ...

   Meeting Document : SC-CAMLR-VI/BG/38 : Author(s): D.S. Butterworth (United Kingdom)

9. Spatio-temporal variability in the winter diet of larval and juvenile Antarctic krill, Euphausia superba, in ice-covered waters

   Abstract:  Antarctic krill Euphausia superba is an ecological key species in the Southern Ocean ... and a major fisheries resource. The winter survival of age class 0 (AC0) krill is susceptible to changes ... the spatio-temporal variability of the diet in 4 cohorts of AC0 krill in the Northern Weddell Sea during late ... of overwintering AC0 krill varies significantly in space and time. Variability in stomach content composition ...

   Meeting Document : WG-EMM-18/P18 : Author(s): F.L. Schaafsma, D. Kohlbach, C. David, B.A. Lange, M. Graeve, H. Flores and J.A. van Franeker

10. A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)

    ) of a Japanese krill trawler over a half-month period. It is based on an underlying krill distribution model ... elongating krill swarms, and allowing hauls to continue through more than one swarm. Twenty four 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 overall krill ...

    Meeting Document : WS-KCPUE-89/04 : Author(s): D.S. Butterworth (South Africa)

Pages