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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
a,Y a,y Wa,y = (3) (4) For determination of regression equation parameters (2) both the ... equation (2) will equal zero when the value of M used is equal to the true value of M. 4. DATA USED ... are given in Tables 4 and 5. 74 Thus the following values were taken as initial ones: M ... 233.2 4 0.568 71.2 5 0.761 25.6 6 0.759 14.6 Thus together with the mean fish weight ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Author(s): Gasyukov, P.S. and R.S. Dorovskikh
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
nnaBY'IHX phl63aBOAax, a TaKlKe KYTKH, CTpYKTypa KOTOPhlX HanOMHHaeT neHTO'IHhle. - 4 - PRELIMINARY ... conclusions reached should not be generalized. - 6 - All investigated codends were 4-wall constructions ... a thickness of 2 mm and having a mesh size of 20 mm. A schematic drawing of a 4-wall codend with ... fine-meshed liner is presented in Figure 4. In order to make it easier to empty the trawl on board ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Author(s): Zaucha, J.
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
npOMblCeJl KaJlbMapOB, B OCHOBHOM 06J1aBJlHBaIOTCSI KaJlbMapbl, npHHa~JIe)K~He K ceMeticTBaM Lolignidae H ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Author(s): Rodhouse, P.G.
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Midwater trawl catchability as an aspect of a quantitative assessment of krill biomass conducted using a trawl census survey
;(- )=+i aq ';, mq - ffi'mq (3) (4) (5) (6) 259 ~(P)=± %r. op vN P (7) where te N ... research by AtlantNIRO in the Scotia Sea from 1983 to 1990. 4. CATCHABILITY OF COMMERCIAL MIDWATER TRAWLS ... distributional patterns of the targetted krill swanns were studied. Tables 2 to 4 give mean statistical data ... metodom tralovykh syemok. Trudy AtlantNIRO, Kaliningrad: 30-43 (in Russian). KASATKINA, S.M. 1988. K ...
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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Statistical problems in krill stock hydroacoustic assessments
Bransfield Strait. Journ. of Crust. Biology, 4: 16-44. WILLlAMSON, N.J. 1982. Cluster sampling estimation ... million de tonnes de krill. L'equidistance des courbes est en kg/m2. TIo,anHCH K pHcYHKaM Pacnpe ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Author(s): Macaulay, M.C.
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Validation of sink rates of longlines measured using two different methods
yielded sink rates of 0.20 ± 0.02 m.s–1 (n = 4) compared to 0.24 ± 0.03 m.s–1 (n = 8) measured with TDRs ... 0.260 0.300 0–2 2–5 5–10 10–20 20–50 Depth increment (m) S in k r a te ( m ) 0.300 0.260 ... 0.220 0.180 0.140 0.100 S in k ra te (m ) 185 Validation of longline sink rates once the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 179–187 : Author(s): Wienecke, B. and G. Robertson
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
Setting direction Pair ‘A’ 4 3 2 1 4 3 2 1 111 ... . corresponding to a standard devia- tion in time to a given depth of approximately 4 s). None of the pair-level ... , this distance varied from 3 to 4 m but may be up to 8 m with UW long- lines (Løkkeborg and Robertson ... start sinking afforded by the line setter would result in lines being about 4.5 m deep compared to 4 m ...
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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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
(i,j) for category k at age l at the end of the 100th year of the second initialisation phase, and ... * (double-normal), hills* (categorical) Fixed rate of 1 - - 1 + 4 1 + 4 + 2 + 2 4 + 4 + 2 ... are currently open. SSRUs currently open are SSRUs 881 B, C, G, H, I, J, K, L. In these models ... preference functions in the semi- restricted model are shown (Figure 4). The spatial models show plausible ...
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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Cephalopod research in the Antarctic
fauna 2. Production and biomass 3. Demography and population dynamics 4. Trophic relations - role ... particular ensuring uniformity of criteria and methodology used in age determination. 4. Investigations ... me. Drs K.-H. Kock and V. Siegel arranged for the loan of ~ephalopod material from the Antarctic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 323-334 : Author(s): Rodhouse, P.G.
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Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
periods 2–4 but most fre- quently in period 3 (Table 1). Monitoring scenario Development of the models ... period TotalYear 1: 10–14 Feb 2: 15–19 Feb 3: 20–24 Feb 4: 25 Feb–1 Mar 5: 2–6 Mar 1: 1990 ... –1991 50 50 2: 1991–1992* 50 50 50 150 3: 1992–1993* 50 44 94 4: 1993–1994* 50 50 21 121 ... , estimated mean weights for the periods 2–5 are: period 2: 3 347 g; period 3: 3 196 g; period 4: 3 045 g ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Author(s): Emmerson, L.M., C. Southwell and J. Clarke