Résultats de la recherche

1. Australian research on Antarctic bird and seal diets

   Heard and Macquarie Islands have been collected during the last seven years. Published and unpublished ... ) 20 38 3' 1 58 400 39 29 32 o Location: Sea ice off Davis Station (68°30'S: 77°50'E ... 23.1 30 - 80 15 - 2 6 9 -2 9 2.6 Gentoo Penguins Location: Macquarie Island (54°30'S: 158°57'E ... of material: Stomachs (Mawson 5, McMurdo 20), vomits (Mawson 2, Davis 14) and faeces (unknown age ... the last seven years. Published and unpublished results are collated and summarised, and several ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Auteur(s): Williams, R.

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

   age of first recruitment is also an important consideration. The simulated yields correspond, on the ... about 4 times the initial yield at the end of the 20-year simulation, doubling in four years for both ... instantaneous fishing mortality rates from the VPA for each year. The mortality rates of each age within a ... 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 ...

   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. Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region

   from 1977/78 to 1989/90, and was in its heyday from 1977/78 to 1981/82. Except for Elephant Island, the ... takes one year or more, whereas in others gonad maturation was completed within one season. Length at ... sexual maturity and length at first spawning in  Champsocephalus gunnari  was one year later on the ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample these ... from 1977/78 to 1989/90, and was in its heyday from 1977/78 to 1981/82. Except for Elephant Island ... included for comparison (Table 2). Readers are also referred to an extensive collection of length-weight ... number of its biological features around South Georgia and Elephant Island (Kock, 1992, for review ... of 20-30 m off the southwest coast of Elephant Island by a 3 m beam trawl. Early juveniles of other ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Auteur(s): Kock, K.-H., C.D. Jones and S. Wilhelms

4. A hybrid approach to acoustic classification and length estimation of krill

   individually for each component of a vector, using classical Bayesian techniques. Classification probabilities ... animal measurement. For small school- ing organisms, such as euphausiids, this criterion is seldom met ... euphausiids are identifi ed for an output ranging between 4/1 fj fi rfΔ and their equivalent radius can be ... estimated confi dently in the interval (amin – amax) where 100|δ| < 20%, for a given dΔ. The mean length ... frequency ratios; (ii) select decision criteria for clas- sifi cation of an aggregation; (iii) quantify the ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Auteur(s): Azzali, M., I. Leonori and G. Lanciani

5. Fish stock assessment survey in Subarea 48.3

   decline by comparison with results from the 1989/90 season. Other species do not show a similar dramatic ... previous year and is not an artefact of the sampling technique or survey design. 30 Further evidence ... 10 15 20 25 30 :=5 40 45 50 55 60 65 70 75 80 85 Length cl~ss (cm) Figure 14: D. eleginoides ... 3 2 1 o o 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Lenoth class (cm) ~ Figure 15 ... 4 3 2 1 o o 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 Length class (cm) Figure ...

   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

6. Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000

   effect on trawling positions. Ice conditions for recent fishing periods were also demonstrated to have an ... commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the South ... quality, such as salp abundance and the proportion of green krill, also seemed to have an increasing ... seemed to have an increasing effect on trawling positions. Ice conditions for recent fishing periods ... plots for outside the 10-90 percentile range. 1 a !- (I) Fishing season Figure 3: Values of ... . ACKNOWLEDGEMENTS We would like to thank Denzil Miller and Robin Ross for their critical comments 011 an earlier ... from fishing vessels, the reasons for changing fishing grounds in January of these years were either ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Auteur(s): Kawaguchi, S. and K. Segawa

7. Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   , foraging trip duration and diet suggests that the death of chicks during the guard stage was due to an ... fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... seven days during mid-January each year at longitude 60°E. Chick Growth (CEMP A7) About 30 chicks ... as an outlier (Student-Newman- and those extending beyond 80 km as 'distant' trips. ~~~l~ method ... : Numbersof nests with eggs and numbers of chicks reared to cri.che age (CEMP A6a count) for each breeding ... respectively (Table 3). 20-24 Feb 1 25 Feb-l Mar I 2-6 Mar Mean foraging trip durations for males and ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Auteur(s): Irvine, L.G., J.R. Clarke and K.R. Kerry

8. Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999

   shorter, therefore it must be assumed that there are factors other than daylight which have an impact on ... concentrations, average trawling depths, derived using an echosounder, were recorded separately for each haul ... – 12 4 12 5– 14 9 15 0– 17 4 17 5– 19 9 20 0– 22 4 22 5– 24 9 E le ph an t I sl an d ... accordance with criteria for age estimation by Martin et al. (1997) and Watkins (1999)) indicates a multi ... studies published to date report an increase of krill size over fi shing season (Martin et al., 1997 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Auteur(s): Jackowski, E

9. Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996

   for finfishing from 1989/90 onwards. Results of the first bottom trawl survey carried out after the ... from 1978/79 to 1988/89, with most of the commercial harvesting taking place in the first two years of ... class; fish from this year class were 20 to 25 cm long in January/February 1976 and 30 to 37 cm in ... 1976 to 1996. Kock Length (cm) 10 20 30 40 50 60 70 80 Length (cm) 1978: no data 10 20 30 ... obtenidas e n la decada del 80. En 1989/90 se declard una veda indefinida a la pesca de peces e n la ... closed for finfishing by CCAMLR from 1989/90. In 1997, CCAMLR modified this closure to the extent that ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Auteur(s): Kock, K.-H

10. Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region

    . whitsoni caught with depth. Catches of females of both species exceeded that of males (especially for M ... . caml). Macrourus caml grows slower, reaches a larger size, lives longer and is heavier for a given ... but at a similar age (50% sexual maturity at 16 y). Gonad staging suggests extended spawning periods ... the same age (Figure 7). For M. caml, females greatly outnumbered males of the same age up to an age ... and weighed them, and then returned whole fish frozen below –20°C to the laboratory for analysis ... ) for both species (Marriott et al., 2006). Gonad stage and age at maturity For each fish sampled in ... ; 4 = Run- ning; 5 = Spent. For analysis of length and age at sexual maturity, fish with gonad stage ...

    Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Auteur(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown

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