Search results
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Orientation of Antarctic krill in an aquarium
slightly less than that when animals were hovering, 49.7° (SD=7.5°, N=50). Such an acute angle of elevation ... . Although mature females with marked swelling of the cephalothorax were not included in the experiment, the ... center of mass was found to be situated more to the anterior than in males and immature females. The ... hovering orientation, which is close to average body orientation, of mature males and mature females was ...
Meeting Document : WG-KRILL-93/24 : Author(s): Y. Endo (Japan)
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
of krill biomass, at120 kHz frequency that can be used to augment research acoustic surveys if proper ... of krill biomass, at120 kHz frequency that can be used to augment research acoustic surveys if proper ...
Meeting Document : SG-ASAM-12/04 : Author(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Comparison of NASC values calculated by swarm-based and grid-based acoustic data processing methods for Antarctic krill density estimation
Abstract: The one nautical mile integrated Nautical Area Scattering Coefficient (NASC) values of ... -based acoustic data processing methods. All parameter settings were consistent with the reports of SG ... -ASAM-2017 except that the dB difference window of Sv 120 kHz-Sv 38kHz is set 0 to 20 dB. And the two ... groups of results were compared by correlation, linear regression analysis and nonparametric significant ...
Meeting Document : SG-ASAM-18/04 Rev. 1 : Author(s): X. Yu, X. Wang and X. Zhao
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Interannual variability of krill, salp and other zooplankton populations in the South Shetland Island area during Austral summer 1993–1998
during the 1993 "salp year". The magnitude of this salp bloom may have resulted from a large ... overwintering "seed" population developed the preceding autumn. Presence of large numbers of another ... . Comparisons of January and February 1998 survey data with data from previous AMLR field seasons showed ... recurring patterns of species abundance relationships that allowed definition of different ecological ...
Meeting Document : WG-EMM-98/50 : Author(s): V. Loeb, W. Armstrong, R. Hewitt (USA) and V. Siegel (Germany)
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PREDICTING THE VULNERABILITY OF BENTHIC, HABITAT-FORMING ORGANISMS TO DISTURBANCE USING LIFE-HISTORY CHARACTERISTICS
Abstract: Assessing the impacts of fishing on Vulnerable Marine Ecosystems (VMEs) in the Southern ... Ocean is hampered by the paucity of information on the resistance and resilience of these ecosystems to ... disturbance. Both resistance and resilience of individual VME-forming taxa are related to their life-history ... characteristics. A global database of life-history characteristics, including growth rate, age, maximum size and ...
Meeting Document : WG-EMM-09/35 : Author(s): K. Martin-Smith (Australia)
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Revised outline of the dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Australia carried out BROKE in 1996. There are two main objectives of our survey: (1) estimation of krill ... the CCAMLR standard protocol. Utility of 70 kHz in addition to 3 standard frequencies (38, 120 and 200 ... of length and orientation of Antarctic krill will also be conducted. An initial plan of the survey ... provides a revised outline of the survey while detailed acoustic survey methods are presented to this ...
Meeting Document : SG-ASAM-18/03 : Author(s): H. Murase, K. Abe, R. Matsukura, H. Sasaki and T. Ichii
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2018–2027 by Russian Federation
research program in the frame of the research and monitoring associated with the Ross Sea region marine ... movement, biological parameters and stock structure of Dissostichus species in the eastern part of the Ross ... tagged fishes to be in focus. The study area is located in the Special Research Zone of the RSRMPA ... . Proposals include the priority elements of the research and monitoring plan for the Ross Sea region marine ...
Meeting Document : WG-SAM-18/07 : Author(s): Delegation of the Russian Federation
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Research program to examine the life cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region marine protected area (RSRMPA) in 2018–2027
research program in the frame of the research and monitoring associated with the Ross Sea region marine ... movement, biological parameters and stock structure of Dissostichus species in the eastern part of the Ross ... tagged fishes to be in focus. The study area is located in the Special Research Zone of the RSRMPA ... . Proposals include the priority elements of the research and monitoring plan for the Ross Sea region marine ...
Meeting Document : WG-FSA-18/33 Rev. 1 : Author(s): Delegation of the Russian Federation
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Modelling egg and larval transport of Antarctic toothfish (Dissostichus mawsoni) in the East Antarctic region: preliminary result using satellite data
larval transport of the Antarctic Toothfish in the East Antarctic region. This paper presents the ... transport pattern of particles released from plausible spawning grounds, i.e. Banzare Bank (BB: Kerguelen ... 2-year simulation. From the result of the BB region, while strong self retention on the BB was ... observed in the experiment A-1, the majority of particles were advected eastward in the experiment A-2. A ...
Meeting Document : WG-FSA-2019/63 : Author(s): M. Mori, K. Mizobata, T. Okuda and T. Ichii
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Green krill, the indicator of micro- and nano-size phytoplankton availability to krill
Abstract: Size fractionated chlorophyll-a concentrations of surface seawater was measured (pico ... -, nano-, and micro-size fractions) during commercial krill operations in the waters north of the South ... Shetland Islands from late December, 1991 to mid-February, 1992. The proportion of green krill had ... the importance of micro- and nano-size phytoplanktons in terms of food source for the Antarctic krill ...
Meeting Document : WG-EMM-98/29 : Author(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)