Resultados de la búsqueda
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
of two years and a circumpolar distribution, but its biology and ecology are still virtually unknown ... mainly target species from two families, Loliginidae and Ommastrephidae. Fisheries for the latter have ... 51 400 tonnes. M. hyadesi probably has a life span of two years and a circumpolar distribution, but ... . Rodhouse** Abstract Cephalopod fisheries world-wide mainly target species from two families ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Autor(es): Rodhouse, P.G.
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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
while at shallower layer (20-50 m) at night. In the offshore foraging areas krill showed no diurnal ... were totally different between the two foraging areas. The reasons why the fur seal chose offshore ... foraging areas over inshore foraging areas were discussed. Author(s): T. Ichii, H. Ishii (Japan), J.L ...
Meeting Document : WG-KRILL-92/27 : Autor(es): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)
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Population structure of the Antarctic toothfish, Dissostichus mawsoni from the Areas 58 and 88 in the Antarctic Ocean based on mitochondrial and microsatellite DNA markers
localities from the two main Subareas 88 and 58, based on a combined analysis of mitochondrial DNA (mtDNA ... (one genetic stock). However, given weak but significant microsatellite differentiation found between ... efforts on the stock (unit) management for this valuable fishery resource. Author(s): H.-K. Choi, J.E ... . Jang, S.Y. Byeon, S. Chung, S.-G. Choi, H. W. Kim and H.J. Lee Title: Population structure of the ...
Meeting Document : WG-FSA-2019/36 : Autor(es): H.-K. Choi, J.E. Jang, S.Y. Byeon, S. Chung, S.-G. Choi, H. W. Kim and H.J. Lee
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Classification of Southern Ocean krill and icefish echoes using Random Forests
echograms and analysis of differences in mean volume backscattering strengths (S V; dB re 1 m-1) measured at ... two or more echosounder frequencies. For commonly used frequencies, however, the differences for krill ... Georgia, South Atlantic, one species in particular, mackerel icefish, Champsocephalus gunnari, forms ... scattering fish species with an overall estimated accuracy of 95 %. Minimum S V, mean aggregation depth (m ...
Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes
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Impacts of rising sea temperature on krill increase risks for predators in the Scotia Sea
reducing fishing pressure is one option for mitigating the overall consequences for marine biota. We used a ... predator populations, especially penguins. Average penguin abundance declined by up to 30% of its ... tradeoffs among marine ecosystem services in an uncertain future. Author(s): E.S. Klein, S.L. Hill, J.T ...
Meeting Document : WG-EMM-18/P02 : Autor(es): E.S. Klein, S.L. Hill, J.T. Hinke, T. Phillips and G.M. Watters
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Conservation Measure Conservation Measure 41-09 (2013)
) New Zealand, one (1) Norwegian, six (6) Russian, one (1) Spanish, three (3) Ukrainian and two (2) UK ... 9. Each vessel participating in the fishery shall have at least two scientific observers, one of ... fishery shall be conducted by a maximum in the season of one (1) Japanese, four (4) Korean, four (4 ... requirements of Conservation Measure 24-02 are met. 8. Any vessel catching a total of three (3) seabirds ...
Conservation Measure : 41-09 (2013)
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The random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the waters of Heard Island (Division 58.5.2) for 2016
one-third the average for L. squamifrons. Conversely, the density of aggregated skates was higher than ... both 2015 and the long term average. The catch of invertebrates in the 2016 survey was two times higher ... tagged and released. Author(s): G.B. Nowara, T.D. Lamb and D.C. Welsford Title: The random stratified ... April, with the completion of 163 stations. The survey was conducted for the second year on the FV Atlas ...
Meeting Document : WG-FSA-16/23 : Autor(es): G.B. Nowara, T.D. Lamb and D.C. Welsford
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Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
biomass by acoustic techniques is dependent on a number of factors of which one of the most fundamental is ... significant differences in volume backscattering (S v) and target strength (TS) transducer gains were detected ... at both 38 and 120 kHz between calibrations conducted at the two locations. At 120 kHz, the required ... S v transducer gains at South Georgia (sea temperature at depth of transducer = 2.3 o C) were on ... calibrations conducted at the two locations. At 120 kHz, the required S, transducer gains at South Georgia ... Maximum power, kW Pulse duration, ms* Band width, kHz* Ping interval, s Two-way beam angle, dB Noise ... of which one of the most fundamental is accurate echosounder calibration. The Simrad EK500 ... backscattering (S,,) and target strength (TS) transducer gains were detected at both 38 and 120 kHz between ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Autor(es): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe
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Chapter 4: Science
marine living resources, and the interactions of fisheries with them. (paragraphs 30 to 32) Scientific ... Committee (2018) SC-CAMLR-XXXVII, paragraph 13.16. Generic recommendation needs to the reviewed in context ... of more specific questions. In the case of krill: 2018 ICED workshop (SC-CAMLR-XXXVII, paragraphs 9.5 ... to 9.6) 2018 Scar Krill Action Group (SKAG) update and support for 2019 SKAG meeting (SC-CAMLR-XXXVII ...
Page : Site Section: The Organisation
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An approach to feedback management (FBM) of the krill fishery based on routine acoustic data collection and intermittent land-based predator studies
the proposed framework provides a clear way forward it will take several years to implement fully due ... to the required development of methodology and time series data. Author(s): Delegations of ... -xxxvi-bg-20.docx Approval: Approved Secretariat Workflow Status: Content Approved Delegation ...
Meeting Document : SC-CAMLR-XXXVI/BG/20 : Autor(es): Delegations of Norway, China and Chile