Resultados de la búsqueda
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Observer coverage in CCAMLR krill fisheries from 2011 to 2015
discussion at the Commission for a number of years, as the krill fishery is the only CCAMLR fishery that does ... the number of days observers were present on vessels as this is a consistent metric that can be ... applied fleet wide, regardless of fishing method. The results show a 90% level of observer coverage ...
Meeting Document : WG-EMM-16/11 : Autor(es): CCAMLR Secretariat
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Mercury concentrations of five species of Antarctic fish collected from CCAMLR Subareas 88.1 and 88.2
positive trends with depth for D. eleginoides and C. dewitti, and with area for A. rostrata. Mercury levels ... by a lower rate of mercury assimilation and/or a higher rate of mercury elimination by D. mawsoni ... . Author(s): S.M. Hanchet, D.M. Tracey, A. Dunn, P.L. Horn and N. Smith (New Zealand) Title: Mercury ...
Meeting Document : WG-FSA-07/24 : Autor(es): S.M. Hanchet, D.M. Tracey, A. Dunn, P.L. Horn and N. Smith (New Zealand)
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Identification and speciation of Antarctic skates
the Antarctic shelf and slope is a species distinct from B. eatonii from the Kerguelen Plateau (the ... type locality), and is a new and undescribed species, and should be provisionally referred to as ... of thorns around the eyes and on the scapular appeared to be a reliable character to distinguish ... species in the Ross Sea. A field key for identification of Ross Sea skates is provided. Author(s): P.J ...
Meeting Document : WG-FSA-07/27 : Autor(es): P.J. Smith, C.D. Roberts, A.L. Stewart, M. McVeagh and C.D. Struthers (New Zealand)
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On biogeographic patterns of benthic invertebrate mega fauna on shelf areas of the Southern Ocean Atlantic sector
communities incorporates a range of data on physical, environmental and biological properties, as well as the ... catches in order to identify and characterise such communities for comparative purposes at a fine spatial ... , reveals a two-layered pattern based on the standardised total biomass data and the composition of phyla ... physical oceanographic data for the region, a pattern of shelf faunal zonation emerges. Patterns of benthic ...
Meeting Document : WS-BSO-07/10 : Autor(es): S.J. Lockhart and C.D. Jones (USA)
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On possible influence of continuous krill fishing technology with the use of ‘air-bubbling suspension system’ on ecosystem elements
location, fishing effort, etc.), the trawl design and fishing method should be considered as a constituent ... processing technology, including waste recovery, may become a constituent part of fishery influence on ... is compared with a conventional fishing method. It was shown that not only hydrobionts, which are in ... (seals, fish, for instance), though not fished by trawl, can be exposed to ecological pressing at a ...
Meeting Document : WG-EMM-06/27 : Autor(es): S.M. Kasatkina and V.A. Sushin (Russia)
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Standardised CPUE analysis of the Antarctic toothfish (Dissostichus mawsoni) fishery in the Ross Sea for the years 1997/98 to 2005/06
2006 season for the Ross Sea using the revised location data for (a) all vessels and (b) core vessels ... generalised linear models and a Tweedie mixed model. The variables included in the analysis appeared ... yearly indices were relatively stable between 1998 and 2003, with a decline in 2004, and an increase in ... current time. Author(s): A. Dunn and S.M. Hanchet (New Zealand) Title: Standardised CPUE analysis of the ...
Meeting Document : WG-FSA-06/47 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)
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Measurement of ocean temperatures using instruments carried by Antarctic fur seals
coastal waters around South Georgia. There was a significant correlation between temperature measurements ... made using a towed undulating oceanographic recorder (UOR) and concurrent measurements from time-depth ... longitude), and at a vertical scale of 10 m. However, there was no significant correlation between ... warmer surface water in a region in which more run-off was to be expected. The study also showed that ...
Meeting Document : WG-EMM-01/56 : Autor(es): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)
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Beach debris survey Signy Island, South Orkney Islands 1997/98
was counted, measured and classified by type, material, weight and size categories. A total of 29 ... and four items with a total weight of 1.7 kg were found at Starfish Cove. The total number of marine ... follows a continuing downward trend since 1993/94. The total weight of debris was 400/0 higher compared ... at Signy Island in 1997/98 continues a promising trend. However the considerable amount of plastic ...
Meeting Document : CCAMLR-XVII/BG/20 : Autor(es): Delegation of the United Kingdom
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–11
reference model using the selected trips tag data gave a similar, but slightly higher estimate of initial ... biomass than the 2009 base case. Retrospective analysis suggests that this is partly as a result of the ... increased number of vessels in selected data set and partly as a result of the 2010 and 2011 observations ... 78.6–81.3).The estimated yield, using the CCAMLR decision rules, was 3282 t Author(s): S. Mormede, A ...
Meeting Document : WG-FSA-11/42 : Autor(es): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN SUBAREA 88.2 SSRU E FOR THE YEARS 2002/03 TO 2008/09
model resulted in a higher estimate of initial biomass than the same model for 2006, but the estimated ... initial biomass was very imprecise. The selected trips data set resulted in a more precise estimate of ... from different years. The use of the selected trips with the revised maturity ogive resulted in a ... selectivity equal to the current fishing selectivity. Author(s): A. Dunn and S.M. Hanchet (New Zealand) Title ...
Meeting Document : WG-FSA-09/41 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)