Résultats de la recherche

1. Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program

   (% Current Value) (20 %) 5 5 (30%) 2 3 Sample sizes required for five years of monitoring and a = 0.10 ... Difference (d) ( 1 0 %) 34 54 (% Current Value) (20 %) 9 1 4 (30%) 5 7 Sample sizes required for five ... (30%) 4 6 418 0.9 88 25 7 4 71 20 0.9 72 1 9 9 71 1 8 8 Table 4 ... = 0.05 Smallest Difference (d) ( 1 0 %) 24 38 (% Current Value) (20 %) 7 1 0 (30%) 4 5 Table 5 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Auteur(s): Whitehead, M.D.

2. Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas

   about 4 times the initial yield at the end of the 20-year simulation, doubling in four years for both ... standard errors are also produced for each of the 20-year runs. For each set of parameters, ten ... for South Georgia stocks and 19 to 22 for Kerguelen stocks. The averages of the ten 20-year ... . Average of the Ten 20-Year Projections for Stock Size in Numbers (X 10- 6 ) and Weight (X 10-3 ) Stock ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Auteur(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel

3. Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)

   1–5 years for males and 1–4 years for females of C. wilsoni. Applying the von Bertalanffy (VB ... males. Age-at-sexual maturity was estimated to be about 2 years for females and 2.5 years for males ... consisted mainly of adult individuals between 1 and 3 years of age, with very few older fish.   File ... population (c). 0 5 10 15 20 25 30 35 40 0 1 2 3 4 5 6 Age (years) To ta l l en gt h (c m ) a(a ... 20 25 30 35 40 0 1 2 3 4 5 6 Age (years) To ta l l en gt h (c m ) c(c) Age (years) To ta ... 15 20 25 30 35 40 0 1 2 3 4 5 6 Age (years) To ta l l en gt h (c m ) b(b) Age (years) 0 ... dominated by a strong peak at 26 cm TL, with two other well-defined modes at 20 and 30 cm TL (Figure 3b ...

   Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Auteur(s): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock

4. The use of analysis of penguin stomach contents in simultaneous study of prey and predator parameters

   -.. "'" .' .'"."."." " ....... "--.... '" .. " .. " ............ " . --. " .. ""." .......... " ... "." ..... " .... -.. " .. --." .. --............... ' ... " ---......... " ............. " ..... -.. " .. ,,' ...... . .._ ...... o IL-______________ L-______________ ~ ______________ J-______________ ~ o 10 20 30 40 dec 13 ... -.............. _ .... " ................ " .... " .... " .......... " .... " .......... " ......... -......... " ................ " .... " ............... " .... " ................... " .... -........... " .... ~ .... -........... --............ " ..................... " .......... " ......... . . -.-.•• ~ ..••.••.•...••.• H._ ••..••• ~ ••••..•.•• a ...... ~.~ ••.... 30 1 ... :=" ....... _ ..... --. -_ ........ _._ ............ -.:. .... ;.; ....... -.... -......... -;.. . .. -.... -... _ .............. ~ .... _._ ", ................... " .................... _ ••••••• 'H' . ... ~ ....... -.-........ -.... ~.- .... - 20 1 ... season). Sampling of krill introduces the problem of net selectivity which, together with krill swarming ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 367–375 : Auteur(s): Marschoff, E. and B. González

5. Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass

   WG-KRILL-91/30 ANALYSES OF ACOUSTIC LINE-TRANSECT DATA ... sections approximately 30 n miles in length. Each section was further divided into 1 n mile integration ... consumption rate is spread throughout the year and should not be compared directly with standing stock ... may be available in the region in any year. For 6.7 x 106 tonnes to be available in a year and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Auteur(s): Murphy, E., I. Everson and A. Murray

6. Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands

   individuals (45%) was found, together with a relatively low occurrence of females that spawned or were in ... recorded. The length and weight ranges were 16 to 49 cm and 20 to 1 050 g respectively. The age groups of ... the periphery, in contact with the oolema. The zona radiata increases in thickness (20 pm), showing ... incorporated here. villosus (Muller). J . Fish Biol., 20: 143-154. Mackerel Icefish Ovarian Development ... proportion of juvenile individuals (45%) was found, together with a relatively low occurrence of females ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Auteur(s): Macchi, G.J. and E.R. Barrera-Oro

7. Joinville–D’Urville Islands (Subarea 48.1) – a former fishing ground for the spiny icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited

   two concentrations of C. wilsoni at 62°20’–62°30’S 55°30’–56°00’W in the northern part of the shelf ... the west. Two- to four-year-old fi sh lived pelagically at 20–120 m over depths of 200–400 m ... . Ikthiol., 20 (4): 644–655. Translated as J. Ichthyol., 20 (4): 50–60. -63° 0' -62°30' -62° 0' -61°30 ... – D’Urville Islands in January 1978 to May 1979. 0 5 10 15 20 25 30 0 5 10 15 20 25 30 35 Length ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 1–20 : Auteur(s): Kock, K.-H., L. Pshenichnov, C.D. Jones, K. Shust, K.E. Skora and Zh.A. Frolkina

8. Estimates of fish stock biomass around South Georgia in January/February 1985

   reduction in stock size to 10 – 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... were seen domi na ted by 3 years old. fish (age class II) which is presumably the recruit i ng year ... in stock size to 10 ~ 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... et C. gunnari. Les estimations de biomasse indiquent une reduction de 10-20% du stock - 2 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Auteur(s): Kock, K.-H.

9. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   stage for at least one year. Individual oocytes are then recruited into the vitellogenic phase over at ... maturation stage by approximately May each year. The age at 50% spawning for females on the Ross Sea slope ... region is 16.6 years (95% CI 16.0–17.3) or 133.2 cm (95% CI 130.9–135.7) by length. On average, males ... spawn at a younger age with an A 50% of 12.8 years (95% CI 11.9–14.0) or 120.4 cm (95% CI 114.8–126.7 ... Age (years) 0 10 20 30 ... f fi sh Age (years) 5 10 15 20 25 30 ... histograms. Diameter (um) Fr eq ue nc y 0 500 1000 1500 2000 2500 0 10 0 20 0 30 0 40 0 n= 28 ... L50% for the hindcast ogive. 0 10 20 30 40 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 Age (y) P ro po rti ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Auteur(s): Parker, S.J. and P.J. Grimes

10. The use of predator-derived krill length-frequency distributions to calculate krill target strength

    to be independent to avoid interrelated estimates. For South Georgia, there is a 20-year time ... Pchantillons simultal~es des predateurs et des filets n'affichent qu'une difference de l%, ce qui met en ... present at South Georgia throughout the year, and samples of krill collected from their faeces can ... split year, i.e. 1993/94 = 1994) from carapaces in scat samples collected during the lactation period ...

    Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Auteur(s): Reid, K. and A.S. Brierley

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