ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA
Abstract: To investigate spatio-temporal variability of krill body length and number of bycatch ... fish, observer data sets on Japanese krill fishery from 1995 to 2008 were analyzed by using a ... dynamics from observation error caused by the fishery activity and individual observation. In both krill ... variability of krill population structure and a difficulty in predicting krill population dynamics. Variances ...
Meeting Document : WG-EMM-11/39 : Автор(ы): T. Okuda and M. Kiyota (Japan)
KRILL CATCHES INDICATE THE IMPACT OF THE EL-NIŇO – SOUTHERN OSCILLATION RELATED PROCESSES ON THE DISTRIBUTION OF KRILL BIOMASS BETWEEN SUBAREAS OF THE ATLANTIC SECTOR OF ANTARCTIC
different climate oceanographic regimes and its influence on krill biomass into the discussion of krill ... fishery management issues. Krill catch data in Subareas 48.1, 48.2 and 48.3 are compared to the AMLR ... Programme findings as described by Loeb et al. (2009). It is shown that krill fisheries statistics may be ... inter-annual variation of krill biomass distribution between the major statistical subareas. The ...
Meeting Document : WG-EMM-09/47 : Автор(ы): V. Spiridonov (Russia)
Proposal for a krill biomass survey for krill monitoring and management in CCAMLR Division 58.4.2-East
Abstract: Australia plans to conduct a krill biomass survey in Division 58.4.2 East during 23 ... January to 25 March 2021. The survey will estimate krill biomass with a view to update the precautionary ... catch limit for krill. A krill observatory mooring system will also be deployed during the survey to ... further monitor seasonal dynamics of krill in the seasonally ice covered area. The survey is also designed ...
Meeting Document : WG-EMM-2019/03 : Автор(ы): S. Kawaguchi, M. Cox, N. Kelly, L. Emmerson and D. Welsford
Indicators of krill flux at various spatial-temporal based on the data of multi-year research carried out in the Scotia Sea. Comments on krill fishery management
distribution of krill density, intensity of water flows (m³/s) and krill biomass (g/m³) transported by water ... understanding of krill biomass dynamic. It has been shown that the formation of transport of krill in the ... Scotia Sea requires both favorable dynamic conditions and krill influx from the Antarctic Pacific and the ... Weddell Sea. The data obtained demonstrate that the dynamics of krill biomass in a given area is more ...
Meeting Document : WG-EMM-2019/58 : Автор(ы): S. Kasatkina and V. Shnar
CPUE, net towing depth and body length of krill during the winter operation of Japanese krill fishery around South Georgia
Abstract: Monthly CPUEs during winter operation of Japanese krill trawlers around South Georgia ... were calculated. The range of CPUE values in 1991 season (poor year of krill) was comparable to the ... from net towing depth. Net tow depth data implied that overall krill distribution in the the winter ... suggeted. Length frequency distribution implied the evidence of strong krill influx from the Antarctic ...
Meeting Document : WG-EMM-96/51 : Автор(ы): Kawaguchi, S., Ichii, T., Naganobu, M.
Can the length composition of krill in predator diets provide information on the age-dependence of krill natural mortality?
of krill is split between predator species. This method uses data on the length distribution of krill ... from predator stomachs. The proportions estimated depend, through the krill yield model, on the ... schedule of krill natural mortality at age. In principle, such a method would allow inferences about this ... ., Butterworth, D.S. Title: Can the length composition of krill in predator diets provide information on the age ...
Meeting Document : WG-EMM-95/40 : Автор(ы): Thomson, R.B., Butterworth, D.S.
On the very high likelihood of bycatch of ice krill (Euphausia crystallorophias) in the present-day fishery for Antarctic krill (E. superba)
Abstract: During open discussions at the Third International Symposium on Krill (St Andrews ... , Scotland, June 2017) attended by representatives of the Association of Responsible Krill harvesting ... krill (Euphausia crystallorophias) had been reported from fishing vessels targeting Antarctic krill (E ... a condition of their fishing permits to report all bycatch. Since the present-day Antarctic krill ...
Meeting Document : WG-EMM-18/05 : Автор(ы): A.S. Brierley and R. Proud
Investigations of krill transport factors in the local areas in the Scotia Sea: variability of krill distribution in the fishing grounds under the transport impact
Georgia West), analysing variability of krill transport and distribution characteristics in the local ... each study areas were accompanied with pulsatory pattern of krill transport, i.e. krill transported ... value (in our case, CV biomass=57%) is important, but also the observed changes in krill aggregation ... patterns forming the transported biomass portions (in our case, CV swarms/mile 2 =63%). Therefore, krill ...
Meeting Document : WG-EMM-07/17 : Автор(ы): S.M. Kasatkina and V.N. Shnar (Russia)
Distribution patterns and biomasses of Antarctic krill (Euphausia superba) and ice krill (E. crystallorophias) with note on distribution of Antarctic minke whales (Balaenoptera bonaerensis) in the Ross Sea in 2005
Abstract: Distribution patterns and biomasses of Antarctic and ice krill in the Ross Sea in ... austral summer in 2005 were studied using a multi-disciplinary survey data set combining cetacean, krill ... obtained from samples of RMT hauls and stomach contents of Antarctic minke whales. Ice krill was ... distributed on the continental shelf region (shallower than 1000m water depth). In contrast, Antarctic krill ...
Meeting Document : WG-EMM-08/35 : Автор(ы): H. Murase, H. Yasuma, R. Matsukura, Y. Takao, K. Taki, T. Hayashi, T. Yabuki, T. Tamura, K. Konishi, K. Matsuoka, K. Miyashita, S. Nishiwaki and M. Naganobu (Japan)
Do krill fisheries compete with macaroni penguins? Spatial overlap in prey consumption and krill catches during winter
, the macaroni penguin, and the krill fishery by examining the spatial overlap in prey consumption and ... and the krill fishery can occur. We tracked adult macaroni penguins from a colony in South Georgia ... krill consumed which could be compared directly with the spatial distribution of the tonnes of krill ... krill during the winter which is similar to the 98,431 tonnes caught by fisheries over the same period ...
Meeting Document : WG-EMM-14/02 : Автор(ы): N. Ratcliffe, S.L. Hill, I.J. Staniland, R. Brown, S. Adlard, C. Horswill and P.N. Trathan (United Kingdom)