Search results
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
&incertitude d'un certain nombre de paramPtres du modele forme le dkveloppement le plus important. Les ... nPOMbICnOBblX Ce30Ha. A O ~ O I I H ~ H M I ~ K MOAeJIU, 3anpOWeHHbIe Ha T p e T b e ~ COBeLIJaHMM ... the range [a, bl. Instead of knife-edge forms for the selectivity and maturity-at-age functions ... are shown primarily in graphical form, with this probability plotted against y (or 6). Thus, Figure ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Author(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies
, Ce30H H HCTOIIHHK 3THX ,llaHHbiX. HeKoTopbie ):laHHbie, Hanp. - pa3MepHbiW cocTaB npo6, TaK:>Ke ... which they are used to form dense concentrations. In the sub-Antarctic area there are about 20 species ... myctophids both in the sub-Antarctic and Antarctic, and in some places around the Southern Ocean form dense ... during the first two years of life were found to be 30 to 36 mm per year (Zaselskiy et al.,1985). Growth ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Author(s): Sabourenkov, E.N.
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[node:field-journal-volume]:37-51
in the Ross Sea (CCAMLR Subarea 88.1). The zones are assumed to form annually as this ageing methodology has ... and encompassed a similar range of forms. The dorsal margin of M. holotrachys otoliths tended to show more ... for M. whitsoni 44 Marriott et al. 0 10 20 30 40 50 60 70 80 90 100 0 5 10 15 20 25 30 35 40 45 50 ... 20 30 40 0 20 40 60 80 100 Total length (cm) S no ut –v en t l en gt h (c m ) Males ...
Science Journal Paper : 37–51
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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
and the longest time series of data on the Soviet krill fi shery (Fedoulov et al., 1996; Litvinov et al., 2003 ... ). Accordingly, CVDF was very widely used, and most CPUE data were presented in this form. An index of catch ... 14 16 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Catch per vessel-days fished (tonnes ... in the Soviet krill fi shery from 1986 to 1991 (RIF statistics). 0 5 10 15 20 25 30 35 ...
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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Validation of sink rates of longlines measured using two different methods
of recording the water-entry time of TDRs. Based on TDR data, the differences in sink rates to various target ... for at least 30 minutes before being deployed. Since the TDRs may hang on the longline for several seconds ... from the records. To achieve this, a crew member signalled the deployment of an instrument about 30 ... the chute recorded the water- entry time with the same digital watch used to synchronise the TDR clocks ... compared to 0.17 ± 0.03 m.s –1 recorded by TDRs. This difference was not statistically significant (t 12 ... ± 0.02 m.s –1) were significantly slower than those measured by TDRs (0.24 ± 0.03 m.s –1, t 10 = –3.851 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Author(s): Wienecke, B. and G. Robertson
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Acoustic estimates of krill density at South Georgia, 1981 to 1998
M ~ c c ~ ) . A~c~paJIb~b1e JIeTHMe IIepHOAbl 1982, 1991 M 1994 rr . XapaKTepH30BanHCb O C ~ ~ ~ H H O HM3KHMH ... . The resulting time series includes estimates arising from cruises where determination of krill biomass ... al., 1991), and their revised estimate for South Georgia is the first point in the time series ... possible here to derive a time series of comparable acoustic estimates of krill density at South Georgia ...
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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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
. The controlled system (here the operating model) provides output in the form of measurable state variables ... ., 2000). Objective (ii) is based on the depletion level used by Smith et al. (2011) to indicate a seri ... X p k K³ ³ = (7) where ( ). denotes the expectation operator and 2 Q x denotes the quadratic form Tx Qx. The vec ... . The operating model can be written in the gen- eral form: ( )1 , ,k k k kx f x u w+ = (9) where the vectors ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Author(s): Hill, S.L. and M. Cannon
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Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas
that the stock could be expected to increase at an approximate rate of 30% per year with no fishing ... recruiting year classes. The time series for estimates is rather short, and the data upon which they were ... of recruitment series for 18 fish stocks from various parts of the world (Hennemuth et al., 1982). The pooled ... The simulation model calculates, using the Murphy catch equation, a time-series of catch and remaining stock ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Author(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel
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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
______________________________________________________________________ 1 Note that the CCAMLR management season is from 1 December to 30 November. In this report, the term ... ‘year’ refers to the period in which most of the season occurs, e.g. the period 1 December 1996 to 30 ... , which represents the border between the continental shelf and slope areas. Mormede et al. 22 ... processes Within each spatial cell, the number of tooth- fish in the population model aged 2 to 30 ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Author(s): Mormede, S., A. Dunn, S. Hanchet and S. Parker
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Some principles for fisheries regulation from an ecosystem perspective
06pa30M onpe,l(enHT b CTeneH b npH6nH~eHH.l1 K 3THM I.{en}lM. 06CYJK,l(aIOTC}l npeHM~eCTBa ... ~Ha.l1 3a,l(aQa, Tpe6~a.l1 Hcnonb30BaHH.l1 CHCTeMHoro aHanH3a. KpaTKO 06cym,l(aeTC.l1 nOJIb3a H3YQeHH ... which form the food base for species in higher trophic levels (e.g. zooplankton, particularly krill ... series of catch and effort data. In principle, such methods attempt to estimate production directly ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Author(s): de la Mare, W.K.