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  1. Do krill and salps compete? Contrary evidence from the krill fisheries

    Paper Title:  Do krill and salps compete? Contrary evidence from the krill fisheries Abstract ... / Description:  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 ... and the presence of green krill were analysed. No relationship between salp density and the proportion of green ... CCAMLR Science, Vol. 5 (1998): 205-216 D O KRILL ... A N D SALPS COMPETE? CONTRARY EVIDENCE FROM THE KRILL FISHERIES S. Kawaguchi, T. Ichii and M. Naganobu ... 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 ...

    Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Author(s): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare

  2. Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000

    Paper Title:  Maximum entropy reconstructions of krill distribution and estimates of krill density ... Entropy (MaxEnt) reconstructions of krill distribution and estimates of mean krill density within two ... . Krill densities had previously been determined at approximately 0.5 km intervals along each of the ten ... uses an iterative Bayesian approach to infer the most probable krill density for each of the 32 000 0.5 ... ): 91–100 91 MAXIMUM ENTROPY RECONSTRUCTIONS OF KRILL DISTRIBUTION AND ESTIMATES OF KRILL DENSITY ... of krill distribution and estimates of mean krill density within two survey boxes (dimensions 80 km × 100 ... data gathered in the boxes during austral summers from 1996 to 2000. Krill densities had previously ... to infer the most probable krill density for each of the 32 000 0.5 × 0.5 km cells in each box, taking ...

    Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Author(s): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins

  3. The use of predator-derived krill length-frequency distributions to calculate krill target strength

    Paper Title:  The use of predator-derived krill length-frequency distributions to calculate krill ... target strength Abstract / Description:  The relationship between krill abundance and predator ... krill sampled from the diet of predators to provide a length-frequency distribution of krill at times ... , i.e during logistic/resupply operations. This will allow a robust estimate of krill abundance ... THE USE OF PREDATOR-DERIVED KRILL LENGTH-FREQUENCY DISTRIBUTIONS TO CALCULATE KRILL TARGET STRENGTH ... The relationship between krill abundance and predator performance is fundamental to an ecosystem-based approach ... to resource management. We propose a method using krill sampled from the diet of predators to provide ... a length-frequency distribution of krill at times when it is possible to run automated shipboard acoustic ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Author(s): Reid, K. and A.S. Brierley

  4. Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data

    Paper Title:  Analysis of variability of krill size and fish by-catch in the Japanese krill ... size of scientific observer data collected on Antarctic krill commercial fishing vessels ... . Observer datasets from the Japanese krill fishery from 1995 to 2008 were analysed using a hierarchical ... fishery process as observation error. In both krill length and by-catch fish number, the parameters ... distribution of Antarctic krill (Euphausia superba), stock abundance estimates from a single snapshot survey ... noted the importance of investigating the potential impact of climate change on krill recruitment ... while minimising the threats to krill population and their predators, it is necessary to undertake ... ecosystems CCAMLR Science, Vol. 19 (2012): 31–47 31 ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH ...

    Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota

  5. Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer

    Paper Title:  Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ... sampling surveys for krill were conducted in the krill fishing ground north of the South Shetland Islands ... of krill were observed. The survey area was divided into four zones: oceanic, slope frontal, neritic ... and nearshore zones. The mean density of krill was low in the oceanic zone (8.5 g/m 2), intermediate ... WG-KRILL-92/26 ABUNDANCE, SIZE AND MATURITY OF KRILL ... (EUPHAUSIA SUPERBA) IN THE KRILL FISHING GROUND OF SUBAREA 48.1 DURING THE 1990/91 AUSTRAL SUMMER ... T. Ichii, H. Ishii and M. N aganobu* Abstract Acoustic and net sampling surveys for krill were ... conducted in the krill fishing ground north of the South Shetland Islands from 18 January to 3 February ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Author(s): Ichii, T., H. Ishii and M. Naganobu

  6. Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery

    Paper Title:  Some aspects of the relation between Antarctic krill abundance and CPUE measures ... in the Japanese krill fishery Abstract / Description:  The history of the Japanese krill fishery is reviewed ... catching “green” krill. These factors result in Catch-per-Day and Catch-per-Haul measures being unlikely ... to index krill abundance. During the high season, Catch-per-Towing-Time seems likely to index only within ... ANTARCTIC KRILL ABUNDANCE AND CPUE MEASURES IN THE JAPANESE KRILL FISHERY D.S. Butterworth Abstract ... The history of the Japanese krill fishery is reviewed briefly. Important aspects of the fishing operation ... - in particular the increasing tendency to avoid catching "green" krill. These factors result in Catch-per-Day ... and Catch-per-Haul measures being unlikely to index krill abundance. During the high season, Catch-per ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 109–125 : Author(s): Butterworth, D.S.

  7. Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density

    Paper Title:  Intra-annual variability in the density of Antarctic krill (Euphausia superba ... ‘annual’ estimates of krill density Abstract / Description:  Upward-looking acoustic Doppler current ... of South Georgia between 14 October 2002 and 29 December 2005 to measure density of Antarctic krill ... and environmental parameters continuously. A distinct seasonal pattern in krill density, recurring consistently over ... . 14 (2007): 27–41 27 INTRA-ANNUAL VARIABILITY IN THE DENSITY OF ANTARCTIC KRILL (EUPHAUSIA SUPERBA ... ‘ANNUAL’ ESTIMATES OF KRILL DENSITY R.A. Saunders and A.S. Brierley Gatty Marine Laboratory University ... 14 October 2002 and 29 December 2005 to measure density of Antarctic krill and environmental ... parameters continuously. A distinct seasonal pattern in krill density, recurring consistently over all three ...

    Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Author(s): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone

  8. Some specific features of the USSR krill fishery and possibilities of applying fishery statistics to studies of krill biology and stocks

    Paper Title:  Some specific features of the USSR krill fishery and possibilities of applying ... fishery statistics to studies of krill biology and stocks Abstract / Description:  General principles ... of the USSR krill fishery such as the location of exploited fishing areas and the seasonal regime ... of their exploitation are considered. Using data obtained by the scouting vessel Globus engaged in regular krill fishery ... KRILL FISHERY AND POSSIBILITIES OF APPLYING FISHERY STATISTICS TO STUDIES OF KRILL BIOLOGY AND STOCKS ... principles of the USSR krill fishery such as the location of exploited fishing areas and the seasonal regime ... of their exploitation are considered. Using data obtained by the scouting vessel Globus engaged in regular krill ... of the vessel rather than with krill abundance in a certain area. During preparations for regular fishing ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 237–252 : Author(s): Dolzhenkov, V.N., T.G. Lubimova, R.R. Makarov, S.S. Parfenovich and V.A. Spiridonov

  9. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

    Paper Title:  CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 ... and their possible utility for evaluation of relative changes in krill biomass Abstract / Description:  Key catch-per ... -unit-effort (CPUE) indices used in Soviet krill fishery statistics, as well as the main sources of data ... in haul duration due to the different fishing strategies used when targeting krill intended for different ... , Vol. 11 (2004): 165–177 165 CPUE INDICES USED IN SOVIET KRILL FISHERY STATISTICS FROM 1977 TO 1992 ... AND THEIR POSSIBLE UTILITY FOR EVALUATION OF RELATIVE CHANGES IN KRILL BIOMASS F.F. Litvinov , A.Z. Sundakov ... it@atlant.baltnet.ru Abstract Key catch-per-unit-effort (CPUE) indices used in Soviet krill fi shery statistics ... targeting krill intended for different end products, i.e. human consumption, krill meal and frozen krill ...

    Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Author(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

  10. Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey

    Paper Title:  Further computations of the consequences of setting the annual krill catch limit ... to a fixed fraction of the estimate of krill biomass from a survey Abstract / Description:  Butterworth et al ... potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the approach ... of the Working Group on Krill (WG-Krill). The most important of these extensions is integration over the ranges ... OF THE CONSEQUENCES OF SETTING THE ANNUAL KRILL CATCH LIMIT TO A FIXED FRACTION OF THE ESTIMATE OF KRILL BIOMASS ... of the harvesting model of Beddington and Cooke (1983) to relate potential krill yield to a pre-exploitation survey ... estimate of krill biomass. In this paper, the approach is extended further so as to incorporate most ... of the amendments specified by the Third and Fourth Meetings of the Working Group on Krill (WC-Krill). The most ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew

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