Search results
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Is current management of the Antarctic krill fishery in the Atlantic sector of the Southern Ocean precautionary?
rate (annual catch divided by biomass) of <7%, which is below the 9.3% level considered appropriate ... exploitation rate in each subarea has remained <3% because annual catches have been <50% of the trigger ... by biomass) of <7%, which is below the 9.3% level considered appropriate to maintain the krill stock ... in each subarea has remained <3% because annual catches have been <50% of the trigger level since ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 31–51 : Author(s): Hill, S.L., A. Atkinson, C. Darby, S. Fielding, B.A. Krafft, O.R. Godø, G. Skaret, P.N. Trathan and J.L. Watkins
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Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects
a profile extended quasi-likelihood, and a log link function with log of effort as an offset. For 1 < ... ; λ < 2 this model is equivalent to assuming a compound Poisson-gamma distribution (i.e. Tweedie ... -likelihood, and a log link function with log of effort as an offset. For 1 < λ < 2 this model ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Author(s): Candy, S.G
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Homogeneity of body length composition of Antarctic krill within the commercial zone
haul. There was no significant difference (P >0.5) in 53 out of 60 hauls. Therefore it is concluded ... difference (P>0.5) in 53 out of 60 hauls. Therefore it is concluded that sampling from one part ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Author(s): Ichii, T.
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Acoustic estimates of krill density at South Georgia, 1981 to 1998
% confidence limits <15 g m-2). For five of the summers between 1990 and 1998 it was possible to calculate ... % confidence limits <15 g m-2). For five of the summers between 1990 and 1998 it was possible to calculate ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Author(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson
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Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)
a variety of primary sources including multi-beam swath bathymetry. Sea floor area (km 2 <500 m depth ... including multi-beam swath bathymetry. Sea floor area (km2 <500 m depth) within CCAMLR Subarea 48.3 ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 167–175 : Author(s): Belchier, M. and P. Fretwell
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A balanced model of the food web of the Ross Sea, Antarctica
uncertainty and the large range of magnitude (>6 orders of magnitude) in trophic flows between groups ... large (>100 cm) toothfish production to satisfy 6.5% of the diet of Weddell seals, 5.6% of the diet ... the estimates of parameter uncertainty and the large range of magnitude (>6 orders of magnitude) in trophic ... . In the balanced model, there is only enough large (>100 cm) toothfish production to satisfy 6.5% of the diet ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Author(s): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet
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Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation
t D ef au lt va lu e R ef er en ce ke y K ril l l en gt h L A ct ua lL en gt ... 10 0 4 Sc al in g fa ct or sc al in g m ax (r (:, 1) )/A ct ua lL en gt ... E. superba TS model Ta bl e 2: Su m m ar y of r el ev an t p ub lis he d re su lts ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Author(s): Calise, L. and G. Skaret
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A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
the number of 1+ krill found around South Georgia was very low (proportion of 1+ krill <7%), while between ... was very low (proportion of 1+ krill <7%), while between 1994 and 1998 the number of 1+ krill found ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Author(s): Watkins, J.L
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
and commenced sinking sooner, thus increasing slightly (<0.5 m) the depth of longlines for given distances ... , thus increasing slightly (<0.5 m) the depth of longlines for given distances astern. This increase ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Author(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
. For vessels using bird-scaring lines and setting lines in propeller turbulence, longline sink rates >0.3 ... and setting lines in propeller turbulence, longline sink rates >0.3 m/s should greatly reduce ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Author(s): Robertson, G.G