Résultats de la recherche
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Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias
16 1 Feb 16 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 10 20 30 40 50 60 C ou nt Date A O n es t a ... va ila bi lit y ad ju st m en t f ac to r 60 50 40 30 20 10 0 C ou nt 50 40 30 20 ... adjusted by some date- or stage-specific factor if the count is to form the basis of an estimate of some ... -October, with adult numbers reaching a peak in early November (Figure 1). Many of these penguins form ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Auteur(s): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
51 4 3 50 5 T ot al 29 4 03 30 4 25 30 4 67 30 4 61 % in cr ea se o ... 30 3 20 06 4. 2% 4. 9% 4. 4% 3 53 5 3 68 3 3 70 7 3 69 0 20 07 3. 8 ... 30 56 1 23 9 36 3 67 0 1 09 6 5. 1 23 .3 0. 40 0. 65 20 07 14 68 ... 1 62 6 26 1 75 5 58 2 4. 2 14 .0 0. 38 0. 30 20 08 18 51 1 51 1 ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Auteur(s): Moir Clark, J. and D.J. Agnew
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Southern elephant seals and CCAMLR
- AI1HaMI1J<:Y nOnYJIHL{1111 3TI1X BI1AOB. B TaJ<:OM CJIY'Iae qpe3BWqaHHO Ba~HWMI1 HBJIHIDTCH I1CCJIeAOBaHI1H ... (50 000 km2 ) was estimated to be in excess of 230 000 t and with a maximum sustainable yield (MSY ... ) of 80 000 t per annum compared with recently suggested standing stock of only 130 000 t and a MSY ... of about 20 000 t. Both estimates are far below the 394 000 t of fish the Kerguelen subpopulation ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 465-473 : Auteur(s): Bester, M.N. and D.G.M. Miller
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
the fishery by CCAMLR. As a consequence, their model outputs were relative to the initial biomass Ba ... fishing regimes. This model considers a year of 360 days, consisting of 12 monthly (30-day) intervals ... ) 1.21 I 0 10 20 30 40 50 60 Length (mm) Selectivity (b) 1.6 1 1 0 2 4 6 Age (years) Relative ... 1 0.8 0.6 0.4 0.2 0 0 10 20 30 40 50 60 Length (mm) Proportion mature (b) 1.6 0 2 ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Auteur(s): Constable, A. and W.K. de la Mare
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Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses
a lesser extent squid. FA profiles in muscle tissues of Antarctic toothfish were Park et al. 30 ... (14%). The mixture was shaken, sealed under nitrogen and then heated on a hot block at 100°C for 30 ... (bonded carbowax, 30 m × 0.25 mm internal diameter and 0.25 μm film thickness) was used to separate the ... min, ramping to 150°C at 30°C min–1, and holding at 250°C for 10 min after ramping at 2°C min–1. The ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Auteur(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*
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Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000
la be lle d in k m . Sc al e ba rs s ho w a lo ng - tr an se ct k ri ll d en ... = 95 km, y = 30 km (Figure 1b). Factors contri - buting to the consistent appearance of krill at these ... that do fi t the data can be sorted into piles of images that are the same, and the largest pile will ... t between the observed data and reconstructed data. The entropy (S) is evaluated as where h(xi ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Auteur(s): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins
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Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption
(~Ba BH~a). 3TO HCCJle~OBaHHe HanpaBJleHO Ha aHaJlH3 COCTaBa nHIQH 3THX BH~OB B ~eJlSlx H3YlleHHSI HX ... a given time, t - time, A - constant. (1) From equation (1) it follows that the amount of food ... in a particular stomach varies according to the equation: S(t) = S (0) exp (-At) (2) where S (0 ... ) - amount of food at time t = O. 323 Equation (2) clearly shows that 90% of food is evacuated over a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Auteur(s): Pakhomov, Y.A. and V.B. Tseitlin
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Fish stock assessment survey in Subarea 48.3
COCTaBe y JIOBOB. BbI5IBJIeHO 3HatIHTeJIbHOe YMeHbIIIeHHe 6HoMaccbI O.llHOrO H3 HaH60JIee Ba:>KHbIX ... standard haul duration of 30 minutes with the net on the bottom was used. However if the net came fast, or ... frequency of 30 kHz was used for bottom detection and a Koden 'Chromascope' operating at 48 kHz was used to ... the stations where it was caught, the catch rates of C. gunnari were less than 200 kg for a 30 minute ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Auteur(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
deployed at a level of 30 m from the surface because at this level krill concentrations are most frequently ... circulation was studied with satellite-tracked buoys equipped with curtain drogues deployed at a level of 30 ... Shetland du Sud et Elephant ont fait l'objet d'une campagne d'evaluation a bord du RV Kaiyo Maru ... bouees suivies par satellite et equipees d'ancres de cape, deployees a 30 m de profondeur, niveau ... Ha ypOBHe 30 MeTpoB OT nOBepxHocTH, nOCKOJIbKY lIaIl\e Bcero KOHl.\eHTpal.\HH KPHJI5.I ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Auteur(s): Ichii, T., H. Ishii and M. Naganobu
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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
VB parameter estimates obtained from the length-at-age data and the Fabens (1965) form of the VB ... and the Fabens (1965) form of the VB growth model. Formulae for adjusting predictions for bias ... (1965) form of the VB growth model. Formulae for adjusting predictions for bias imparted by the use of ... VB parameter t0. Note also that if E(ec|Lr) is not zero, then apply- ing the Fabens form of the VB ... binomial/logistic model mentioned earlier. Figure 6 shows that the bias in applying the Fabens form of ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Auteur(s): Candy, S.G., A.J. Constable, T. Lamb and R. Williams