Search results
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Modelling Southern Ocean krill population dynamics: biological processes generating fluctuations in the South Georgia ecosystem
and an important aspect of the variation is fluctuation in the abundance of krill, the major prey item of many ... , however, there has been little quantitative assessment of the importance of krill population dynamics ... in the observed variation. Here, analyses of a model of krill population development and predator diet data from ... South Georgia were used to examine seasonal changes in the population structure of krill. The krill ...
Meeting Document : WG-EMM-01/53 : Author(s): E. Murphy and K. Reid (United Kingdom)
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Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991
Abstract: Experiments on estimation of krill transport by a current and its distribution ... . It is shown that krill transport by wat4er flow across the fishing ground results in variation of fished krill ... of observations (29.05.91–03.06.19) at variable krill distribution characteristics due to outside transport ... of different krill population modifications across the investigation area, the variation coefficient of catch ...
Meeting Document : WG-EMM-95/04 : Author(s): Kasatkina, S.M.
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On selectivity of commercial and research trawls when krill catching
krill trawls within the frame of krill density precise estimates provision problem in echo-surveys ... . The results of fishing one krill aggregation with two types of trawls (PT 72/308 commercial trawl and Isaacs ... in significant variability of krill size composition in catches. Average krill length differed more than in 6 mm ... selectivity features will especially affect the estimates of composition, abundance and biomass by krill size ...
Meeting Document : WG-EMM-96/34 : Author(s): Kasatkina, S.M.
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An initial analysis of the characteristics of Antarctic krill taken by the commercial fishery and Antarctic fur seals during the winters of 2002 and 2003 at South Georgia
-frequency distribution of krill at South Georgia during the winter of 2002 and 2003 and compare ... these with the length-frequency distribution and frequency of occurrence of krill in the diet of Antarctic fur seals ... . There were significant differences in the mean size of krill taken by vessels/measured by observers ... in the size composition of krill in the fishery and the diet of Antarctic fur seals. During the period ...
Meeting Document : WG-EMM-04/62 : Author(s): K. Reid, D.J. Agnew, N.L. Warren and E. Owen (United Kingdom)
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Growth of Antarctic krill Euphausia superba at South Georgia
Abstract: Antarctic krill Euphausia superba has a central role in the ecosystem of the Southern ... dynamics. The length of Antarctic krill in the diet of Antarctic fur seals Arctocephalus gazella at South ... may result in 2 year-old krill at South Georgia attaining the same size as 3 year old krill ... of krill has important implication for comparing the fate of individual cohorts over large scales ...
Meeting Document : WG-EMM-01/18 : Author(s): K. Reid (United Kingdom)
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A proposal for large scale sampling of krill in the diet of predators across Area 48 to coincide with the CCAMLR synoptic survey
of Antarctic krill Euphausia superba across the Scotia Sea. Resolution of the spatial component ... of this variability requires a 'snapshot' of the krill population over the region (eg the CCAMLR B0 survey ... . At South Georgia krill in the diet of Antarctic fur seal Arctocephalus gazella show a good level ... of concordance with scientific net samples. In order to examine the potential of using krill in the diet ...
Meeting Document : WG-EMM-99/33 : Author(s): K. Reid (United Kingdom)
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Chiller killers – first steps towards identifying krill pathogens
Abstract: Antarctic Krill (Euphausia superba) is a ‘keystone species’ in the Southern Ocean ... and seals. Despite its ecological and economic importance, research into krill and other crustacean diseases ... the waters of Antarctic krill northern distribution limit have experienced significant warming. In a changing ... survey of krill from the Southern Ocean. In the present study and for the first time, krill were sampled ...
Meeting Document : WG-EMM-15/23 : Author(s): K. Bateman, R. Hicks, G. Tarling, M. Soeffker and G. Stentiford (United Kingdom)
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PROPERTIES OF KRILL DISTRIBUTION IN PELAGIC AND COASTAL SSMUs OF THE SOUTH ORKNEY ISLANDS SUBAREA ACCORDING TO THE DATA OF SCIENTIFIC OBSERVATIONS AND FISHERY
Abstract: In this paper the krill spatial distribution in the in coastal and pelagic SSMUs ... of the Subarea 48.2 depending on oceanological factors is considered. Estimates of krill biomass and aggregation ... characteristics, and krill transport factors according to different modifications of Antarctic water mass ... in the South Orkney Pelagic Area (SOPA) during the CCAMLR 2000 Survey, the krill aggregation patterns did ...
Meeting Document : WG-EMM-08/55 : Author(s): S.M. Kasatkina and V.N. Shnar (Russia)
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Krill fishery report: 2006 update
Abstract: This report on the krill fishery in Area 48 has been prepared in a format similar ... 5 Contracting Parties are fishing for krill in Area 48 in the 2005/06 season, and these vessels have taken 64415 ... t of krill to date. Two CCAMLR scientific observers have been deployed. The preliminary estimate of the total ... catch of krill for the season is approximately 97090 t. This compares with 127035 t of krill reported ...
Meeting Document : WG-EMM-06/5 : Author(s): Secretariat
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Assessment of fishable krill biomass on the basis of the acoustic surveys results using geostatistical methods
of krill density based on the acoustic survey data is demonstrated. The results obtained indicate ... usefulness of these methods in studying the structure of krill density field for biomass assessment ... in compliance with different thresholds of their fishery importance. The structure of krill density field ... in Subarea 48.3 based on the surveys 2000 and 2002 indicates that krill fishable biomass is concentrated ...
Meeting Document : WG-SAM-10/07 Rev. 1 : Author(s): S.M. Kasatkina and P.S. Gasyukov (Russia)