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1. Krill (Euphausia superba) distribution contracts southward during rapid regional warming

   Euphausia superba (hereafter, ‘krill’) has contracted southward over the past 90 years. Near their northern ... juvenile krill. We found evidence for environmental controls on recruitment, including a reduced density of ... larval krill. However, the total post-larval density has declined less steeply than the density of ... recruits, suggesting that survival rates of older krill have increased. The changing distribution is ...

   Meeting Document : WG-EMM-2019/P02 : Autor(es): A. Atkinson, S.L. Hill, E.A. Pakhomov, V. Siegel, C.S. Reiss, V.J. Loeb, D.K. Steinberg, K. Schmidt, G.A. Tarling, L. Gerrish and S.F. Sailley

2. Evaluation of the krill stock in Subarea 48.3, June–August 1995

   till 15 August 1995 peculiarities of krill distribution, their characteristics including time stability ... (tolerance), are examined, calculations of biomass and krill commercial concentrations values are given ... . Interannual changes in some indices of krill fishing Resources in this subarea from 1985 till 1995 undergo ... analysis. Author(s):  Bibik, V.A. Title:  Evaluation of the krill stock in Subarea 48.3, June–August 1995 ...

   Meeting Document : WG-EMM-96/70 : Autor(es): Bibik, V.A.

3. 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 : Autor(es): B.G. Heywood, S.F. Gull and A.S. Brierley (United Kingdom)

4. 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 : Autor(es): D. Kang, Y. Lee, H.-C. Shin, W. Lee and S. Kim (Republic of Korea)

5. 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 : Autor(es): Ivanova, V.I., Sushin, V.A., Kasatkina, S.M.

6. 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 : Autor(es): Sunkovich, V.I., Kasatkina, S.M., Abramov, V.M., Polischuk, M.I., Sushin, V.A., Shnar, V.N.

7. Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1

   -assessment framework for Antarctic krill (Euphausia superba) to assimilate multiple sources of survey data ... and estimate krill growth.  Kinzey et al. (2014) fitted stock-assessment models to survey data that ... from three of the models provide a robust picture of changes in the krill population.  An annual model ... -annual variations in cohort strength have dominated krill dynamics in Subarea 48.1.  Long-term trends ...

   Meeting Document : WG-EMM-14/35 : Autor(es): G.M. Watters, C.S. Reiss and D. Kinzey (USA)

8. Classification of Southern Ocean krill and icefish echoes using Random Forests

   . Antarctic krill, Euphausia superba, are typically identified through a combination of expert scrutiny of ... two or more echosounder frequencies. For commonly used frequencies, however, the differences for krill ... pelagic aggregations, which can be difficult to distinguish acoustically from large krill layers. Mackerel ... during surveys. The final random forest classified krill, icefish, and mixed aggregations of weak ...

   Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes

9. Habitat partitioning in Antarctic krill: spawning hotspots and nursery areas

   Abstract:  Antarctic krill, Euphausia superba, have a circumpolar distribution but are ... ontogenetic life stages of krill (eggs, nauplii plus metanauplii, calyptopes, furcilia, juveniles, and adults ... krill densities can be high. To address these questions, we compiled larval krill density records and ... temperature suggest that krill associate with different habitats over the course of their life cycle. From the ...

   Meeting Document : WG-EMM-2019/20 : Autor(es): F. Perry, A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor

10. THE ASAM 2010 ASSESSMENT OF KRILL BIOMASS FOR AREA 48 FROM THE SCOTIA SEA CCAMLR 2000 SYNOPTIC SURVEY

    the CCAMLR 2000 synoptic survey data to generate a quality checked krill biomass for area 48 following ... the acoustic protocol identified in ASAM 2009. The total biomass of krill in the Scotia Sea was ... estimated from acoustic and net data collected during the international multi-ship krill biomass in the ... during the assessment and include additional information of krill density by strata and transect ...

    Meeting Document : WG-EMM-11/20 : Autor(es): S. Fielding and J. Watkins (UK) and ASAM participants: A. Cossio, C. Reiss and G. Watters (USA), L. Calise and G. Skaret (Norway), Y. Takao (Japan), X. Zhao (People’s Republic of China), D. Agnew (UK) and D. Ramm and K. Reid (CCAMLR Secretariat)

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