Search results
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
estimated using an acoustics survey. Acoustic data were collected with 38 and 120 kHz from April 13 to 24 in ... 2016 and 38 and 200 kHz from March 6 to 14 and 38 and 120 kHz on April 27 and May 5 in 2017. Krill were ... and 83 thousand tonnes (CV=31.4%) applying S v difference-3.0-13.8 dB in 2017, respectively. Krill ... density and biomass were significantly higher in 2016 than those in 2017. Author(s): S. Choi, K. Lee and ...
Meeting Document : SG-ASAM-18/08 : Author(s): S. Choi, K. Lee and D. An
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Hydroacoustic data obtained around Elephant Island and South Orkney Islands during austral summer 2018
of 2018 as a complement to finfish research in Subareas 48.1 and 48.2 using bottom trawling nets. The ... geographical distribution of krill concentrations and the presence of fish shoals are described in an area of ... the greatest presence in the studied area, are described, mainly to the north of both islands ... . Likewise, mackerel icefish (Chamsocephalus gunnari) are identified, forming large concentrations in steep ...
Meeting Document : WG-FSA-18/05 : Author(s): N.A. Alegría and P.M. Arana
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Revisiting krill ageing method using eyestalk cuticles
promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ... growth bands in the cuticle through multiple moulting processes is poorly understood, and is in fact a ... point of contention among crustacean researchers. Since the interpretation of growth bands in thin ... an inter-laboratory calibration should be undertaken as a community effort supported by CCAMLR, in a ...
Meeting Document : WG-EMM-2019/45 : Author(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda
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Antarctic Climate Change and the Environment – 2019 Update
Abstract: This update by SCAR on recent advances in our understanding of climate change across ... ecosystems, builds on the material included in the Antarctic Climate Change and the Environment (ACCE) report ... , published by SCAR in 2009 (Turner et al. 2009), with an update of the key points in 2013 (Turner et al. 2014 ... abreast of recent advances in climate science, with a particular focus on Antarctic climate change and the ...
Meeting Document : SC-CAMLR-38/BG/17 : Author(s): Submitted by SCAR
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The impact of the hake Merluccus spp. longline fishery off South Africa on Procellariiform seabirds
Abstract: In 1994, an experimental longline fisheri for hake Merluccius spp. commenced in the ... white-chinned petrels a year in South African waters at a rate of 0.44 birds per 1000 hooks. This ...
Meeting Document : WG-FSA-97/55 : Author(s): Boix-Hinzen, C., Barnes, K.N., Ryan, P.G.
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Identification and speciation of Antarctic skates
(COI) were sequenced in 9 species of Bathyraja skates from the Southern Oceans and New Zealand. Based ... Ross Sea and South Atlantic. However, for Bathyraja n. sp. cf. eatonii and Bathyraja maccaini in the ... species in the North Pacific Ocean. Despite investigating four colour characters, eight meristic ... dorsal colouration was unreliable. Proportional disc width showed substantial changes in shape between ...
Meeting Document : WG-FSA-07/27 : Author(s): P.J. Smith, C.D. Roberts, A.L. Stewart, M. McVeagh and C.D. Struthers (New Zealand)
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An assessment of longlining operations for Dissostichus eleginoides on board the Chilean-registered longliner BF Cisne Verde during March–May 1997 around South Georgia (Subarea 48.3)
maturity was also larger. The proportion of mature fish in the male population sampled was 52.0%, but was ... only 24% in the female population. The mean daily loss rate of toothfish observed at the hauling point ... CPUE by numbers between catches in 1994 and 1997 despite reduction in CPUE by weight indicated that ... exclusion effects may be important in determining the catch taken by longlines. Continuing decreases in size ...
Meeting Document : WG-FSA-97/41 : Author(s): Ashford, J.R., Everson, I.
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Compliance requirements for an orderly development of the krill fishery
in Statistical Division 58.4.2 Australia noted that while the scientific data supported an increase ... , such a large increase required the inclusion of other elements in the conservation measure to ... number of compliance measures that have proven successful in managing the toothfish fisheries that are ... catches at port in CM 10-03 (Port inspections of vessels carrying toothfish). o Components of CM 21-02 ...
Meeting Document : CCAMLR-XXVI/31 : Author(s): Delegation of Australia
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Management Plan for Antarctic Specially Protected Area (ASPA) No. XYX, Edmonson Point, Wood Bay, Victoria Land, Ross Sea
Abstract: Edmonson Point (74°20' S, 165°08' E) is located in Wood Bay, Victoria Land ... -free areas in Northern Victoria Land and was first identified in the 1980s as a site that could merit ... special protection. The site is representative in the sense that a wide range of freshwater habitats is ... present, and is considered excellent for studies on biogeochemical processes in lakes; vegetation is ...
Meeting Document : WG-EMM-05/7 : Author(s): Delegation of Italy
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A krill–predator–fishery model for evaluating candidate management procedures
Statistical Area 48 amongst smaller spatial units in order to minimize the localized depletion of krill in ... necessary to evaluate these procedures in terms of their likely effects on krill and predator populations as ... well as fishery performance. This evaluation must be conducted in the context of considerable ... running the model in S-Plus and illustrate its use. Finally, we conclude that although our model ...
Meeting Document : WG-EMM-05/13 : Author(s): G.M. Watters, J.T. Hinke (USA), K. Reid and S. Hill (United Kingdom)