Search results
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Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey
midwater trawls and small research trawls, in this case using an Isaacs-Kidd trawl, demonstrated the ... comparative analysis of trawl catchability for commercial midwater trawls and small research trawls, in this ... , specific biomass (density) of krill in the catch is expressed in g/m2 or g/m3 at the point of trawling ... contains no errors, the relative error in the biomass estimate from formulas 1 and 2 will be calculated as ... - relative error in estimate of mean catch per standard hauling period T; - relative error in estimate of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 257–272 : Author(s): Kasatkina, S.M.
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Can toothfish catches be used to predict the presence of vulnerable benthic invertebrate taxa?
data available showed no evidence that the presence of any of six VME indicator taxa was informative in ... vulnerable invertebrate taxa in the Ross Sea are generally unknown and the fisheries-independent ... describing the dis- tribution of VME indicator taxa1 in the Ross Sea region outside the spatial footprint of ... have large, but unique, spatial distributions in the Ross Sea region (Parker and Bowden, 2010), and ... that within their total range, vulnerable communities tend to occur in relatively small higher ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 87–96 : Author(s): Parker, S.J. and M.H. Smith
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[node:field-journal-volume]:37-51
- rid otoliths, for subsequent ageing, on two com- mercial longline trips to the Ross Sea (CCAMLR ...
Science Journal Paper : 37–51
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Response to Everson (2008)
krill in the southwest Atlantic has been estimated as 109.4 million tonnes with a standard deviation ... TS values, in a Bayesian Maximum Entropy (MaxEnt)-based image-reconstruction framework (e.g ... wrong’ with either or both methods, and has implied that since, in his opinion, the MaxEnt approach is ... , particularly in the ways in which SD is calculated, and it is essential that these differences be considered ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 195–198 : Author(s): Brierley, A.S., B.G. Heywood and S.F. Gull
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Note on estimating krill abundance from acoustic data on individual aggregations
Africa 219 1. INTRODUCTION At its Second Meeting in Leningrad, the CCAMLR Working Group on Krill ... (WG-Krill) emphasised the importance of acoustic techniques in the determination of krill abundance ... combined in some way to estimate total krill abundance in the area under consideration. The major ... estimate krill abundance over large areas (Miller and Hampton, 1989a). In recent years, advances in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 219–223 : Author(s): Hampton, I. and D.G.M. Miller
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Review of length-weight relationships for Antarctic krill
maturity stages in improving the precision of calculating weight from length data. Since Morris et al ... . (1988) did not consider possible seasonal variations in weight, it would be helpful to summarise ... telson), while other length categories are indicated in the respective tables. Another length ... different from AT (in E. superba), the results are directly comparable and are not listed separately in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Author(s): Siegel, V.
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From the Editor
Science and the science used by CCAMLR In the exchange between Drs Everson and Brierley, the values ... , represent two of the estimates availa- ble. As the exchange reflects, there are a number of ways in which ... strengths determined from an SDWBA model in conjunction with the Jolly and Hampton analysis approach. This ... included in the CCAMLR-2000 Survey and forms the basis of the estimation of the precautionary yield of ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 199
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Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR Science, 11: 59–80 (2004)
ˆ ˆ iiu r u σ = å (Schall, 1991). The results in Candy (2004) were not affected by this ... (EQD) described by equations (7) and (9) in Candy (2004) should be replaced by the corresponding ... = rather than excluding the whole second term in each of equations (7) and (9). Re-definitions of ... Candy, 2004) using equa- tion (9a) corresponding to Figure 2 in Candy (2004) and suggests the estimate ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 221–222 : Author(s): Candy, S.G
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Revised estimates of the area of the South Georgia and Shag Rocks shelf (CCAMLR Subarea 48.3)
Belchier and Fretwell 168 introduction The area of sea floor within different depth strata in the South ... , swept-area estimates of density of mackerel icefish (Champsocephalus gun- nari) in Subarea 48.3 for ... limited sounding data, with some dating from the 1920s. Updated estimates of the sea floor in Subarea ... digitised hydrographic charts. Finally, in some areas GEBCO data (GEBCO, 2003) were used to supplement the ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 167–175 : Author(s): Belchier, M. and P. Fretwell
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Estimating standing stock of krill using maximum entropy
stock of krill in the area and compare it with the estimate using the Jolly and Hampton (1990) method ... totally incorrect to state that the MaxEnt estimate is ‘plausible’ in compari- son with the Jolly and ... - bution in the predator and prey fields. Acoustically, the range is horizontally from ping by ping to ... miles and vertically from the pulse length to the inte- grated range. In the absence of such tests ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 193 : Author(s): Everson, I