Résultats de la recherche

1. A quantified Bayesian maximum entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the 2000 CCAMLR survey

   Abstract:  We present the results of an alternative method of estimating krill abundance, and ... producing maps of krill distribution, from the data collected during the 2000 CCAMLR survey of the Scotia ... an objective choice of the most probable reconstruction of krill distribution, given the data. The ... points. We therefore inferred the krill density on a 1 nm × 1 nm grid of pixels. Density values (g m-2 ...

   Meeting Document : WG-EMM-05/42 : Auteur(s): B.G. Heywood, S.F. Gull and A.S. Brierley (United Kingdom)

2. Hydrography and acoustic biomass estimates of Antarctic krill (Euphausia superba) near the South Shetland Islands, Antarctica, during January 2000: preliminary results

   Abstract:  To estimate the abundance and distribution of Antarctic krill (Euphausia superba) in ... ) mesoscale box (total transect length = 459 nautical miles, area = 11,313 n mile2). Krill were collected with ... George Island. The length-weight relationship of krill sampled during the survey was w = 0.0035*(L)3.2108 ... factor for integrated backscattering area to areal krill biomass density at 120 kHz was 0.1556. The mean ...

   Meeting Document : WG-EMM-00/52 : Auteur(s): D. Kang, Y. Lee, H.-C. Shin, W. Lee and S. Kim (Republic of Korea)

3. Acoustic estimates of krill abundance at South Georgia, 1981–1998

   Abstract:  Acoustic estimates of abundance of the Antarctic krill, Euphausia superba, at South ... includes some previously published estimates arising from cruises where determination of krill density was ... subsidiary during other studies of the pelagic ecosystem at South Georgia. Krill abundance at the island ... and 1994 austral summer seasons were characterised by particularly low abundances of krill. For five ...

   Meeting Document : WS-AREA 48-98/9 : Auteur(s): A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK)

4. DEMOGRAPHIC STUDIES OF ANTARCTIC KRILL IN THE SOUTH ORKNEY ISLANDS AREA 2009, FIELDWORK AND PRELIMINARY RESULTS

   Abstract:  This study documents methods and data collection during commercial Antarctic krill ... preliminary results regarding krill demography from the sampling period in January-March, 2009. Total body ... % adult males and ~64% adult females (overall adult sex ratio: 1:4). The proportion of immature krill was ... increased. This field work was part of the Antarctic Krill and Ecosystem Studies (AKES) and the purpose was ...

   Meeting Document : WG-EMM-09/10 : Auteur(s): B.A. Krafft and G. Skaret (Norway)

5. Commercial krill fisheries in the Antarctic 1973–1988

   Living Resources (CCAMLR) are used to discern visible trends in catch and effort for the Antarctic krill ... (Euphausia superba) fishery between 1972/73 and 1987/88. With time the annual krill catch rose gradually to a ... fisheries in Statistical Sub-areas 48.1, 48.2 and 48.3 dominate exploitation of krill in the CCAMLR ... fishery with respect to independent estimates of krill abundance and minke whale (Baleonoptera ...

   Meeting Document : SC-CAMLR-VIII/BG/11 : Auteur(s): Delegation of South Africa

6. Assessment of fishing intensity of krill in Subarea 48.2 during the season of 1989/90

   Abstract:  The research performed was aimed at assessment of fishing fleet impact upon krill ... above period total krill catch amounted to 88.9 thous. t which constitutes the upper limit of seasonal ... months of the highest fleet pressure for entire period from 1984 to 1993. Krill fishery was concentrated ... ) fishing intensity in each month critical to dependent species exceeded no 1 0% of initial krill stock at ...

   Meeting Document : WG-EMM-97/51 : Auteur(s): Ivanova, V.I., Sushin, V.A., Kasatkina, S.M.

7. Geographical aspects of utilising resources of krill (Euphausia superba)

   as in the coastal waters of the Antarctic continent, the formation of krill aggregations is variable ... lies with assessing the variability of krill swarming patterns and the subsequent implementation of ... directed at assessing variability in krill transportation and areas of swarm formation in the open-ocean ... environment. The commercial exploitation of krill aggregations in open-ocean areas should occur alongside an ...

   Meeting Document : WG-EMM-96/05 : Auteur(s): Makarov, R.R.

8. Results of acoustic assessment of krill biomass in Subarea 48.2 during summer 1996

   ; acoustic assessment of krill biomass and distribution was carried out in study area restricted with 59° 10 ... with between-tacks distance of 20 miles. The echosurvey was carried out diurnally. Krill target ... strength was estimated by means of TS/length relationship, recommended by WG-krill (SC-CAMLR, 1991 ... amounted to 1.12 mln. t at 95% confidence limit CL=93.1 thous.t. Variation coefficients of krill density ...

   Meeting Document : WG-EMM-96/36 : Auteur(s): Sunkovich, V.I., Kasatkina, S.M., Abramov, V.M., Polischuk, M.I., Sushin, V.A., Shnar, V.N.

9. Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South Shetland Islands during the 1994/95 austral summer

   sample of 50 kg of krill. Number of by-catch fishes ranged from 0 to 50 per 100 kg of krill catch and ... total wet weight of by-catch fishes also ranged from 0 to 248.2 g per 100 kg of krill catch. Abundance ... of by-catch fishes was higher in krill hauls with the low catch rates. Author(s):  Iwami, T. Title ... :  Fishes incidentally caught by Japanese Antarctic krill commercial fishery to the north of the South ...

   Meeting Document : WG-EMM-95/56 : Auteur(s): Iwami, T.

10. Collection, processing and potential use of sonar data from krill fishing vessels

    Antarctic krill distribution, and potentially abundance. Data from sonars can be used independently of ... acoustic surveys. Sonars are capable of sampling large volumes of water and can image entire krill swarms ... and track changes in swarms through time.  Some commercial krill fishing vessels, e.g.  ‘Juvel’ and ... vessels.  The purpose of this paper is to stimulate discussion on the utility of sonars to describe krill ...

    Meeting Document : SG-ASAM-14/01 : Auteur(s): G. Skaret (Norway) and M.J. Cox (Australia)

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