Résultats de la recherche

1. Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season

   appearance and adds tastiness. - 339 - 4. Body color Transparent krill (called "white") are firm and ... Table 4 are shown the relative frequencies of cues used in detecting swarms on which tows were made ... horizontal effective search width. Also in areas where swarms exceeded more than 3-4 km length/diameter but ... . 4. CATCH RATES 4.1 The utility of Catch Per Day and Catch Per Haul in Juding the Worth of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Auteur(s): Ichii, T.

2. An assessment of the impact of krill fishery on penguins in the South Shetlands

   began with a low catch in December, followed by roughly constant catch levels of 4 300 to 5 800 tonnes ... /lO-day period for the following three months (Figure 4). Initially (from early January to late ... comprise 94, 4 and 2% respectively of the total penguin population in Subarea 48.1. Where an estimate of ... northeast of the island. During the fourth survey (late February; Figure 7(4)) krill concentrations ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Auteur(s): Ichii, T., M. Naganobu and T. Ogishima

3. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   model (4) The log-link function falls within this family of power-link functions when θ = 0 while the ... systematic component specifi ed by model (2) or (4)) with the power variance function. This requires ... (PQD), D, given for model (4) by 0 0 , ˆ, , , ˆ , , ij ij ij ij iji j D y E D y d θ η λ λ ... ij ij ij e ij ij iji j i j ij D y E d V y y (6) where for the specifi c case of model (4) φij ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Auteur(s): Candy, S.G

4. Evaluating the impact of multi-year research catch limits on overfished toothfish populations

   , should aim to produce an as- sessment within a 3–4 year time frame of research commencing (SC-CAMLR ... ) Parameter set 1 945 10% 0, 15, 30, 45, 60, 75, 90 As per Table 1 2 893 15% " " 3 841 20% " " 4 782 ... 60 75 90 1 10 27 28 29 30 31 32 34 2 15 21 22 24 25 26 27 28 3 20 17 17 19* 20 21 22 23 4 25 15 16 ... % SSB0 reference lines are shown). 0 20 40 60 80 0 1 2 3 4 S pa w ni ng B io m as s x 1 03 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Auteur(s): Welsford, D.C

5. A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3

   the IUU model 54 S 6 2 4 56 S Shag Rocks 52 S 50 S 50 W Subarea 48.3 South Georgia Island ... Shag Rocks Areas used in the IUU model 1 2 3 4 5 50°W ... areas most frequently covered by other vessels are Areas 2 and 4, whereas all recorded incidents have ... IUU cruise, B, was Bi,y = Ha,y Ai,y (q Ma,s + (1–q) Ma,w) (4) where H is the average number of hooks ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Auteur(s): Agnew, D.J. and G.P. Kirkwood

6. Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)

   (gonads developing) to 4 (ripe) and 5 (spent). Catch and effort data were used to estimate toothfish ... , then the biomass for the local area being fished (BLOC) is given by: ˆ LOC c B = m - (4) Using ... . Division 2003 2004 2005 2006 2007 2008 58.4.1 Number of vessels: 0 0 7 6 4 6 Hooks set (thousands): 0 ... 0 3024 2109 4025 3035 58.4.2 Number of vessels: 1 1 4 3 3 3 Hooks set (thousands): 606 216 1373 ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Auteur(s): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán

7. Changes in biomass of eight species of finfish around the South Orkney Islands (Subarea 48.2) from three bottom trawl surveys

   (Figure 4). The distribution of catches by species was highly dependent on depth strata, with average ... each survey, with 4 124 kg/n mile2 in 1985, 13 219 kg/n mile2 in 1991 and 18 173 kg/n mile2 in 1999 ... 4 957.84 159.32 203.87 814.92 84.11 251.12 10.89 8 021.48 Changes in biomass of fish ... 643) 273 (129-1 073) 4 225 (1 764-18 647) 4 824 (2 297-18 318) 108 (56-156) 1 119 (491-5 313 ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 53–74 : Auteur(s): Jones, C.D., K.-H. Kock and E. Balguerías

8. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.

   t t a t a a t a t S FC N S F M M S F (4) where Nt,a is the number in the population for a given ... + +- = - - -t a t a t a a tN N N S F M . (5) Candy 4 Equations (4) and (5) are denoted the BODE model ... ). To estimate Ft from equation (4) using known numbers caught in each age class, assuming M and Sa ... - ately scaling F(δt') given Nt,a and Sa given that the annual catch, equation (4), is well approximated ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.

9. Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea

   determine Pelvic length (cm) 0 20 40 60 80 100 T ho rn le ng th ( m m ) 0 2 4 6 8 10 12 14 ... 4; few thorns (11%) were scored as having a readability of 1 or 2. The fi nal sample size of aged ... , four with scores of 3, and one with a score of 4. There are many possible explanations for these ... 12 years for males and 14 years for females (Figure 4). Growth curves Von Bertalanffy growth ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Auteur(s): Francis, M.P. and C. Ó Maolagáin

10. 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

    /12 to 4/12) (b) six months: April to September (t = 5/12 to 11/12), and (c) uniform intensity ... Bvqyear 31)/K5i' (= B,,,,/KsI') have been plotted against y. Thus Figure 4 shows the median, 5% and 95 ... equations (A.4) and (A.5) - excludes the possibility that krill shrink during the winter). Figure 6 ... Scientific Committee (SC-CAMLR-XI) , Annex 4 . CCAMLR, Hobart, Australia: 171-173. Fishing season (b ...

    Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Auteur(s): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew

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