Search results
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Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)
size, and that this reduction would be indicated by a significant decline in an abundance index with ... cumulative catch was then calculated separately for each series, including any catches taken by other ... . A limited analysis was undertaken by WG-FSA at its meeting in 1992, which showed no relationship ... start of setting and the time at the start of hauling. It was generally felt by WG-FSA that this was ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Author(s): Parkes, G., C.A. Moreno, G. Pilling and Z. Young
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Note on estimating krill abundance from acoustic data on individual aggregations
arperaU;HH. BbI~eJIeHbI rJIaBHble Pa3JIHllH5I aTHX ~ByX nO~XO~OB. B HTore npH3HaHo npeBocxo~CTBO ...
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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Status of the FIBEX acoustic data from the West Atlantic
Area 48 (Conservation Measure 32/X). This limit was based on calculations undertaken by the ... collection, whilst errors in time and position were corrected by examining details of speed and course in ... the version which was distributed by the BIOMASS Data Centre to those nations which contributed to ... the acoustic integration interval adopted by the l t zurn i was different to that used by other ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Author(s): Trathan, P.N. and I. Everson
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Patterns and processes in the distribution and dynamics of Antarctic krill
) C 30HOH ,l{OBepFlTeJIbHOrO FlHTepBaJIa (95%) ,l{JIjI ,l{aHHbIX no npOJIFlBY BpaHCiflFlJI ... oFloMaccbI (r IMZ) ,l{JIjI ,l{aHHbIX no npOJIFlBY BpaHCiflFlJI,l{a (4-5jIHBapjI 1987 r.>. Pacnpe ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Author(s): Levin, S.A., A. Morin and T.M. Powell
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An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
relationships to food and temperature. Functional relationships are in great demand by modellers but seldom ... produced by SO ecologists. It is therefore shown where these limited data lie and, where non-SO-specific ... second- ary production. They typically comprise >75% of biomass and are only exceeded by E. superba or ... water column in the productive sea- son, followed by reproducing adults. Most studies address the ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Author(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
). Population decrease was reported by several authors in different stocks: at Kerguelen (Skinner and van ... Stranger Point was calculated by females plus weaned and dead pups (McCann, 1985) and at Peninsula Valdes ... a mathematical model as described by Lewis (in press) was used. Estimates of intrinsic ... population growth rates were based on the exponential function: Nt = No e rt as suggested by Caughley (1977 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Author(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
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Review of length-weight relationships for Antarctic krill
relationships has already been carried out by Morris et al. (1988), who also investigated the importance of ... Tables 1 to 4 summarise the available length-weight relationships for E. superba by season and contain ... goodness of fit tests of the regressions by examining their variances. They found that the simple ... shows that the results may differ by 15% when using length-weight relationships for kriU at different ...
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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Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives
-DAC) suggested that the interpretation of Article IT of the CCAMLR Convention would be assisted by ... might be a by-catch limit in practice) would be set using whichever of these fishing mortalities was ... distribution associated with the current assessment, weighted by their subjective probabilities. These ... catches by weight, however, rather than applying fishing mortality. The catches by weight were calculated ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 467–475 : Author(s): de la Mare, W.K. and A. Constable
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CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass
the high variability of CPUE indices, which are infl uenced by many factors, means that they may not ... correlation between these indices, as recom- mended by CCAMLR (SC-CAMLR, 2002), as well as their utility for ... –1992) and the AtlantNIRO computerised database containing haul-by-haul data from 1986 to 1991, so ... Southwestern Atlantic (Anon., 1978–1992) contains data from 1977 to 1991 by a fi shery operator (Regional ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Author(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov
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Estimating standing stock of krill using maximum entropy
Anglia Ruskin University, Cambridge, UK Email – i.everson@anglia.ac.uk The paper by Heywood et al ... Hampton results presented by Demer and Conti (2005). Something is wrong with the estimated standing ... stock by either or both methods. The Jolly and Hampton approach is simple, robust and, as Heywood et ... - bution in the predator and prey fields. Acoustically, the range is horizontally from ping by ping to ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 193 : Author(s): Everson, I