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1. 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 ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample these ... catches. The only scientific surveys of these stocks during these years were conducted by Germany in 1985 ... evidence of illegal fishing since the closure of the region some 10 years ago. Differences in length-weight ... from 1977/78 to 1989/90, and was in its heyday from 1977/78 to 1981/82. Except for Elephant Island ... for some years in the late 1980s. Since the early 1990s, the fishery was almost exclusively a ... 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 ...

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

2. 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 : Автор(ы): Azzali, M., I. Leonori and G. Lanciani

3. 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 ... survey. All values are for South Georgia, and both sexes except where indicated. Age (years) Species ... samples taken during the survey. All values are for South Georgia, except where indicated. Age (years ... 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 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Автор(ы): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski

4. 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 ... from fishing vessels, the reasons for changing fishing grounds in January of these years were either ... . ACKNOWLEDGEMENTS We would like to thank Denzil Miller and Robin Ross for their critical comments 011 an earlier ...

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

5. 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 ... 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 ... nine years for which we have data Procedure, H = 24.94, df = 6, p < 0.001; Table 2). (Pearson Product ... 1998/99 season did not differ from other years except for the period from 25 February to 1 March in ...

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

6. 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 : Автор(ы): Jackowski, E

7. 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 ... 1976 to 1996. Kock Length (cm) 10 20 30 40 50 60 70 80 Length (cm) 1978: no data 10 20 30 ... class; fish from this year class were 20 to 25 cm long in January/February 1976 and 30 to 37 cm in ... 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 : Автор(ы): Kock, K.-H

8. 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 : Автор(ы): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown

9. The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model

   strategic frameworks for assessing uncertainty in ecosystem dynamics models. Such models have been used ... within CCAMLR to evaluate options for managing the Antarctic krill fishery in the Scotia Sea and southern ... Drake Passage. The model analysed here required 2 311 input values for each of four scenarios and ... to identify the important statistics for consideration when assessing uncertainty in ecosystem ... described in Hill et al. (2007a, 2007b), as an example of good practice for addressing sev- eral types of ... model outputs, and provides an objective basis for targeting data collection and modelling effort to ... Matrix 1 18 5 90 1 Vector or matrix length is the number of relevant modelled areas, except for time ... available for download as an [R] package with accompany- ing documentation from http://swfsc.noaa.gov/ aerd ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Автор(ы): Hill, S.L. and J. Matthews

10. Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea

    continental slope and shelf of the Ross Sea at depths from 30 to 120 m, during the Italian expeditions of 1997 ... /98, 2000 and 2004. The regression lines for estimating TS from nine experiments were: TS 38 ... main contribution to the scattering for small fish is from soft tissues and for larger sizes from hard ... juvenile stages (size: 45–48 mm; age: second year), coinciding with an increase in lipid content in the ... , for (krb) ranging from 0.2 to 20 is similar to that of a high-pass filter, however, the non-linear ... accounts for over 90% of the echo energy (Foote, 1980a), and distributes the reflected sound more omni ... coefficient m has been found to be close to 20 for a great many fish species (e.g. backscattering is ...

    Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Автор(ы): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi

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