Search results
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Age Determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula Subarea (Subarea 48.1)
cross sections proved to be the most reliable method. Mean length data at age presented here for Low ... proved to be the most reliable method. Mean length data at age presented here for Low I. specimens were ...
Meeting Document : WG-FSA-88/15 : Author(s): E. Barrera-Oro (Argentina)
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A brief exploitation of the stone crab Lithodes murrayi (Henderson) off south west Africa, 1979/80
. Although the catch rate declined, the mean size of exploitable crabs and of undersize crabs stayed ... , the mean size of exploitable crabs and of undersize crabs stayed virtually constant. Some morphometric ...
Meeting Document : WS-CRAB-93/21 : Author(s): R. Melville-Smith (South Africa)
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The effect of temporal variability on power analysis predictions for Adélie penguin CEMP parameters at Béchervaise Island
to the initial value irrespective of the magnitude of the initial size. This means that power analysis results ... value irrespective of the magnitude of the initial size. This means that power analysis results based ...
Meeting Document : WG-EMM-03/49 : Author(s): L.M. Emmerson and C. Southwell (Australia)
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The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin
with a comparatively high fecundity and growth performance may mean that the stocks of C. gunnari in Sub-Antarctic ... with a comparatively high fecundity and growth performance may mean that the stocks of C. gunnari in Sub-Antarctic ...
Meeting Document : WG-FSA-96/24 : Author(s): Everson, I., Kock, K.-H.
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
the proportion of sets where they are present is between 3 and 5%. Over the seven years of study, mean pod size ... Georgia Figure 7: Mean (+95% CI) of killer whale and sperm whale pod size observed around fishing ... Paper Title: Estimating the impact of depredation by killer whales and sperm whales on longline ... data collected on longliners between 2003 and 2009 were analysed to look at the levels of depredation ... 3.8% and sperm whales on 17.7% of lines. Killer whales appear in pod sizes normally of 4 to 10 animals ... , and often appear to actively seek out fishing vessels and ‘strip’ the line of a large number of ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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Distribution and diet of juvenile Patagonian toothfish on the South Georgia and Shag Rocks shelves (Southern Ocean)
, with fish subsequently dispersing to deeper water around both the South Georgia and Shag Rocks shelves. Mean ... subsequently dispersing to deeper water around both the South Georgia and Shag Rocks shelves. Mean size ...
Meeting Document : WG-FSA-07/P4 : Author(s): M.A. Collins, K.A. Ross, M. Belchier, K. Reid. (Mar. Biol., 152: 135–147 (2007)).
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Population and breeding of the gentoo penguin Pygoscelis papua at Marion Island, 1994/95 to 2002/03
chicks in 1997/98 and 0.58 chicks in 2002/03 (mean 0.38 ± 0.21). In 1994/95, replacement clutches ... in 2002/03 (mean 0.38 ± 0.21). In 1994/95, replacement clutches increased the overall production ...
Meeting Document : WG-EMM-03/16 : Author(s): R.J.M. Crawford, J. Cooper, M. du Toit, M.D. Greyling, B. Hanise, C.L. Holness, D.G. Keith, J.L. Nel, S.L. Petersen, K. Spencer, D. Tshingana and A.C. Wolfaardt (South Africa)
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
it can be seen as a conservative estimate. Sensitivity to the application of this rate was considered ... . In addition, the greater catches from ground B as compared to other areas mean that the reduction ... Patagonian toothfish (Dissostichus eleginoides) in different sectors of the Southern Ocean are considered to ... these data. The bulk of the data show that fish disperse only a very short distance, up to 15 n miles in ... most cases, from their point of release. This may be explained in part because of the concentration of ... resident during their phase in the depth range of the fishing grounds, but they move on once they approach ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Author(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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Factors that may influence the accuracy of abundance estimates from CCAMLR tag-recapture programs for Dissostichus spp. and best practice for addressing bias
Factors that may InFluence the accuracy oF abundance estImates From ccamlr tag-recapture programs ... representative sampling has been mandated in Conservation Measure (CM) 41-01, Annex C, since 2010/11, so ... –66. CCAMLR. 2012. Schedule of Conservation Meas- ures in Force 2012/13. CCAMLR, Hobart, Aus- tralia ... Paper Title: Factors that may influence the accuracy of abundance estimates from CCAMLR tag ... Lincoln-Petersen equation, the simplest form of an abundance estimator using tag-recapture data, was used ... programs. The methods that have been used in CCAMLR tag-recapture programs to mitigate such biases, or to ... -recapture data. Due to the complexity of toothfish movements throughout their life cycle, as well as the ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 63–72 : Author(s): Welsford, D.C. and P.E. Ziegler
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Fisheries risks to the population viability of black petrel (Procellaria parkinsoni)
to this population. The mean age of first breeding for black petrel is estimated to be 6.7 y. Before this, new adults ... that there is clear evidence that fisheries do not pose a risk to this population. The mean age of first breeding ...
Meeting Document : WG-SAM-10/P01 : Author(s): R.I.C.C. Francis and E.A. Bell (New Zealand)