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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
Islands in the southern part of the Indian Ocean (upper right). Gasco et al. 4 the observers report ... = å (4) where ( ) , ,j k lloss uB C the total fish biomass lost to depredation in all cells cu ... and 4. The calculations were run using all longline sets of the 2003–2013 period, which provided ... Cd: cells cd with available data in both absence and presence of odontocetes (equations 1, 2, 3, 4 ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Author(s): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
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Food consumption by predators in a CCAMLR integrated study region
file name. 4. OUTPUT FROM THE PROGRAM The program produces both printed output and graphs of the ... -'t)/24> where again 4> is the feeding frequency: the factor 86.4 converts travel speed from m S-l to ... . "standing around at nest site" 2. incubation 3. brooding 4. foraging for chick 5. foraging for self 6 ... activity 1 Blank a or b for activity 2 Blank a or b for activity 3 Blank a or b for activity 4 Blank ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Author(s): Croxall, J.P., C. Ricketts and A.G. Wood
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Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001
guration of isotherms. The 0ºC isoline on maps of SST anomalies moved northward by 4–5° latitude from ... Jan- uary 1991. The temperature dropped by as much as 4°C for waters to the northwest of South ... 1991 (Figures 3 and 4) with anomalies in 2000 and 2001 (Figures 5 and 6) reveals a signifi cant ... catch of krill was 81 369 tonnes and 123 562 tonnes respectively, the catch in 1999/2000 was only 4 ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Author(s): Vanyushin, G.P
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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
Palmer Station staff.) 3 Data downloaded from www.antarctica.ac.uk/met/gjma/ 4 In order to avoid ... en gu in 28 .0 d ay s ( 0 .3 ) (2 7. 4, 2 8. 0, 2 8. 7) ba se lin e[ C H P E ... ] B as el in e C ID fo r ch in st ra p pe ng ui n 46 .9 d ay s ( 0 .2 ) (4 6. 4 ... , 4 6. 9, 4 7. 3) la t.e ff E ff ec t o f l at it ud e (l at it ud e m ea su re d ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Author(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
r u 1 . 1 6 ~ a M e X A y CYMTblBaHMRMll 6 b l n a y 0 6 0 1 4 ~ C q ~ T b I B a ~ e n e f i ... in fact ranged between 4 and 40 years, indicating slower growth and a much less productive fishery ... - estimated ages was calculated to be $4 million in 1981 Canadian dollars. Stewart (1926) validated the ... suckers grew quickly at ages 4-7 years, few surviving beyond an age of 9 years. Annual mortality was ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Author(s): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed with mitochondrial and intron DNA markers
from 200–500 mg of muscle tissue by homogenisation and digestion with proteinase-K at 55°C for 4 h ... with 5- and 4-base restriction enzymes following methods successfully used for D. eleginoides (Smith ... ATPase, ND1, ND2, ND3/4, COI, COII, cytochrome b, and two portions of the control region, and the ... performed in 20 μl volumes for a minimum of 4 h, following the manufacturer’s recommendations (New England ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 43–51 : Author(s): Smith, P.J. and P.M. Gaffney
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Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea
, but most (61.5%) were scored as reada- bility 4 (bands very unclear over at least part of the thorn ... skates having large discrepancies between the two readers. 10 20 30 R ea de r 2 , r ea di ng 4 ... 2 , r ea di ng 4 (y ea rs ) ( m ea n ± 2S E ) 40 30 20 10 N = 96 Francis and ... growth curves (Figure 4) for skates that live in cold deep water, although no other skate aged so far ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Author(s): Francis, M.P. and M.J. Gallagher
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A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
-dependent selectivity function The trawl fi shing selectivity function used here is described by the 4 ... ⎣ ⎦ ⎣ ⎦⎣ ⎦ ∈ = ∑ (4) where φ( ) is that standard normal density function, Φ( ) is the corresponding cumulative ... density func- tion and Gj = Kj – L∞ (1 – exp{–κ(a – t0)}). It can be seen from equation (4) that ... replacing p* by p’ does not change the probability density func- tion (4). If it is assumed that p’ is ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Author(s): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
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Optimization of survey sampling design in the detection of interannual variability and prey size selectivity in the diet of penguins
Antarctica was estimated as four times as expensive as on the mainland. In our design (4-level nested ... . Variance Number of Sam )lin~ Dates Component 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 10.298 13 6 4 3 3 2 2 ... 2 2 2 2 2 2 2 2 7.3750 19 8 5 4 3 3 2 2 2 2 2 2 2 2 2 3.2674 60 22 13 8 6 5 4 4 3 3 3 3 2 2 2 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 551–559 : Author(s): Marschoff, E. and B. Gonzalez
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Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
: (1) immature; (2) maturing; (3) ripe; (4) running ripe; or (5) spent. Fish were designated as being ... within-reader test they were 6.91 and 9.77%. Test results are shown in Figure 4. 297 Age estimation ... plot (Figure 4) suggests that the reader generally assigned higher ages to fish that were between 10 ... Figure 4: Bias plots of within- and between-reader comparison tests. The expected 1:1 (solid line) and ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 291–303 : Author(s): Marriott, P.M., M.J. Manning and P.L. Horn