Search results
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Preliminary analyses in support of the CEMP Review Workshop: serial correlations
Abstract: As part of the preliminary analyses undertaken in preparation for the CEMP Review ... Workshop, the Secretariat has documented serial correlation in time series of CEMP indices. The values ... -03/24. Serial correlation in biological indices occurred in 4, 10 and 33 % of the time series at ... alpha levels of 0.05, 0.10 and 0.20 respectively. Generally, serial correlation appeared more prevalent ...
Meeting Document : WG-EMM-03/27 : Author(s): Secretariat
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Potential effects of UV-B on krill – experimental and genetic studies
radiation 3–5 times below surface irradiance caused krill to die within a week, while animals in the dark ... 3–5 times below surface irradiance caused krill to die within a week, while animals in the dark survived ...
Meeting Document : WG-EMM-99/24 : Author(s): S. Newman, S. Jarman, S. Nicol, D. Ritz, H. Marchant, N. Elliot and A. McMinn (Australia)
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THE ROSS SEA: A CANDIDATE FOR IMMEDIATE INCLUSION IN A NETWORK OF MARINE PROTECTED AREAS
Abstract: In the Southern Ocean fisheries are increasingly being exploited while the effects of ... populations and communities, thus confounding management. It is timely for CCAMLR to develop a network of MPAs ... , with initial inclusion of the well-researched Ross Sea, the area of the Southern Ocean having ... last stretches of the world’s oceans where sea ice remains an important part of the system. The Ross ...
Meeting Document : CCAMLR-XXVII/BG/30 : Author(s): Submitted by ASOC
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Short note: By-catch of fishes caught by the krill fishing vessel Niitaka Maru in the South Georgia area (August 2007)
Abstract: Scientific observation on the species composition and abundance of fishes incidentally ... from 6 August to 30 August to the north of South Georgia Is. Among 87 net hauls quantitatively examined ... 21 hauls. Among a total of 7 fish species, Myctophidae 3, Zoarcidae 1, Nototheniidae 1 and ... Channichthyidae 2, recognized, Krefftichthys anderssoni of Myctophidae occurred most frequently (38.5% of net ...
Meeting Document : WG-EMM-08/57 : Author(s): T. Iwami and M. Naganobu (Japan)
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A multi-frequency method for improved accuracy and precision of in situ target strength measurements
Abstract: The effectiveness of a split-beam echosounder system to delineate single scatterers and ... synchronized signals from two or more adjacent split-beam transducers of different frequencies. The accuracy of ... from one of the split-beam transducers, additional corresponding TS measurements can be collected with ... juxtaposed single-beam transducers. Both methods were utilized to extract in-situ TS measurements of ...
Meeting Document : WG-EMM-97/24 : Author(s): Hewitt, R.P., Soule, M.A., Demer, D.A.
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Remarks on natural mortality of Dissostichus eleginoides in Subarea 48.3
Abstract: With samples originated in the Chilean longline fishery of Dissostichus eleginoides of ... the considered cases with the different growing parameters, with the exception of the case of fishing ... sites. By other hand, when comparing the different mean values of M for the different variables, it was ... hooks N° 22. The general mean value of M calculated for the 44 analyzed situations was 0.14 ± 0.03 ...
Meeting Document : WG-FSA-92/21 Rev. 1 : Author(s): C.A. Moreno and P.S. Rubilar (Chile)
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Preliminary observation about the possibility of Antarctic krill escapement from a trawl net
underwater video camera attached on the trawl net of Japanese commercial trawler Fukuei-maru (4,350.62 GT) in ... 2011. To avoid the influence of camera lighting on krill behavior, the observation was conducted during ... daytime. Few krill appeared to escape from posterior part of trawl net. When the trawl net caught dense ... krill swarms, krill escaped from anterior part of trawl net. Krill were observed to swim actively after ...
Meeting Document : WG-EMM-12/66 : Author(s): K. Fujita and S. Hasegawa (Japan)
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The use of net monitoring cable in trawl fishery for krill
of using a net cable to inform crew and scientists on trawl performance. Some results from ongoing ... tests demonstrate its potential in allowing observations of trawl in relation to krill distribution and ... behaviour, including real time imaging of krill and predator behaviour in relation to fishing gear during ... experiments. Due to the vessel-and gear differences of Saga Sea and Antarctic Sea presently using the ...
Meeting Document : WG-EMM-17/47 : Author(s): O.R. Godø
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Measurement of capacity in CCAMLR exploratory fisheries in Subareas 88.1 and 88.2: Secretariat update 2017
Abstract: This paper presents an update of the metrics of capacity and capacity utilisation ... not indicate an excess of capacity in the fishery. As previously reported, based on a measure of ... management areas compromises the ability of the Secretariat to forecast and issue a timely closure notice to ... reduce the possibility of an overrun using the current fishery forecasting procedure. Author(s): CCAMLR ...
Meeting Document : WG-FSA-17/05 : Author(s): CCAMLR Secretariat
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Methodological aspects of the International Synoptic Krill Survey in Area 48, 2019
Abstract: The effect of differences in the methodology used for the CCAMLR 2000 krill acoustic ... survey and the 2019 synoptic survey were considered. These were 1) the effect of acoustic surveying at ... effect of krill discrimination method. Surveying during the day only produced a 6% increase in the ... distributions. The choice of krill discrimination method had a marked effect on the per-stratum biomass ...
Meeting Document : SG-ASAM-2019/10 : Author(s): G. Macaulay, G. Skaret, T. Knutsen and B. Krafft