Resultados de la búsqueda
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A review and preliminary analysis of CEMP data
Abstract: A review of the data in the CEMP database revealed minor inconsistencies that have now ... . Other problems were detected, such as the use of old forms and Standard Methods, and the increasing ... amount of automated data being collected and submitted. Members should ensure that they use the most ... current Standard Methods and CEMP forms found on the website (www.ccamlr.org). A review of the standard ...
Meeting Document : WG-EMM-02/7 : Autor(es): Secretariat
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ANALYSIS OF SCIENTIFIC OBSERVER DATA FROM THE RUSSIAN KRILL TRAWLER 'MAXIM STAROSTIN' IN THE SOUTH ORKNEY ISLANDS REGION (SUBAREA 48.2) DURING THE SEASON 2008-2009
of the ' Maxim Starostin '. Their observation plan targeted at monitoring the amount and ... large-size krill have been allocated. Reproduction of krill in these aggregations occurs at different ... size/sex composition of the krill catches, bycatch, spatial distribution and biological condition of ... krill. This paper provides initial analysis of the ' Maxim Starostin ' catch data collected ...
Meeting Document : WG-EMM-09/29 : Autor(es): D. Sologub (Russia)
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Deployment of research hauls in the exploratory fisheries for Dissostichus spp. in Subareas 48.6 and 58.4 in 2011/12
met the deployment criteria, i.e. fishing depths of 550 to 2200m, separation distance of at least 3 ... nmiles from any other research haul, between 3500 and 5000 hooks and soak times of at least six hours ... Abstract: As of the end of May 2012, four longliners conducted research fishing in the ... ). These vessels completed a total of 267 research hauls. The four vessels deployed their research hauls ...
Meeting Document : WG-SAM-12/06 : Autor(es): Secretariat
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The three-frequency method for classifying the species and assessing the size of two euphausiids (Euphausia superba and Euphausia crystallorophias)
echo-integrations, made simultaneously either at two or at three frequency, and of the results of net ... rule methodologies. This paper explores applications of the multi-frequency method using data from ... , the sampled areas, the instrumental and the sampling strategies varied. First, on the basis of the ... acoustic estimates of euphausiid lengths, derived from the fluid sphere model, are compared with lengths ...
Meeting Document : WG-EMM-02/37 : Autor(es): M. Azzali, G. Lanciani and I. Leonori (Italy)
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
Abstract: Since krill distributional data do show evidence of spatial correlation, estimators of ... performance in practice. Such studies require a simple method for computer generation of krill distribution ... " models of krill distribution are considered. These achieve overall spatial correlation by placing ... krill swarms at random within larger aggregation features termed concentrations; these concentrations ...
Meeting Document : WG-KRILL-91/21 : Autor(es): D.S. Butterworth, D.L. Borchers and D.G.M. Miller (South Africa)
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Population structure of the Patagonian toothfish (Dissostichus eleginoides) in Australian waters
Abstract: MtDNA and microsatellite loci were used to investigate the population structure of ... Patagonian toothfish at two Australian fishing locations (Macquarie Island, five collections; Heard and ... sample of toothfish from the Shag Rocks/South Georgia fishing location (CCAMLR area 48.3) was also ... heterogeneity at several microsatellite loci among the ten collections, and no overall differentiation among the ...
Meeting Document : WG-FSA-01/38 : Autor(es): S.A. Appleyard, R.D. Ward and R. Williams (Australia)
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Development of the krill stock in the elephant island region during the 1996/97 season
. Krill and salps were present at almost all of the stations, other epipelagic zooplankton species were ... good recruitment of this year-class. At the same time the salp abundance was above average, but still ... /96, the present juvenile age group 1 +, does not repeat the very successful recruitment of the ... one order of magnitude lower than in the salp bloom years 1992/93 and 1993/94. Author(s): Siegel, V ...
Meeting Document : WG-EMM-97/16 : Autor(es): Siegel, V.
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Diel vertical distribution of Antarctic krill around the South Shetland Islands in February 2019 and its potential effect on biomass estimation
Abstract: To address the potential effect of DVM behavior on krill biomass estimates, diel ... vertical distribution of krill swarms around the South Shetland Islands in Subarea 48.1 were analyzed based ... survey. Results show that more krill swarms were found in shallower depth at night than during daytime ... , while 16.5 % compared to 5.7 % of the corresponding total NASC value (m 2 n.mile-2) integrated for ...
Meeting Document : SG-ASAM-2019/05 : Autor(es): X. Wang, X. Yu, J. Zhang and X. Zhao
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Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean)
Abstract: The distribution and diet of juvenile (<750 mm) Patagonian toothfish are described ... from 4 annual trawl surveys (2003-06) around the island of South Georgia in the Atlantic sector of the ... Southern Ocean. Recruitment of toothfish varies inter-annually, and a single large cohort dominated during ... the four years surveyed. Most juveniles were caught on the Shag Rocks shelf to the NW of South Georgia ...
Meeting Document : WG-FSA-07/P4 : Autor(es): M.A. Collins, K.A. Ross, M. Belchier, K. Reid. (Mar. Biol., 152: 135–147 (2007)).
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Trends in bird and seal populations as indicators of a system shift in the Southern Ocean
components is poorly understood because of the difficulty of obtaining long-term data sets on marine ... organisms. The Southern Ocean plays a critical role on global climate and there is growing evidence of ... in mid 1980s, being particularly important in the in the sub-Antarctic sector. At the same time with ... a time lag of 2–9 years with temperatures, the population size of most seabirds and seals monitored ...
Meeting Document : WG-EMM-03/53 : Autor(es): H. Weimerskirch, P. Inchausti, C. Guinet and C. Barbraud (France)