Search results
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Assessment of krill flux factors in waters of South Orkney Islands during summer 1996
d o not provide a basis for calculating actual total biomass of krill I n recent years ... was 0.14 S,, in section 5 and -0.16 S , in section 6 (Figure 2, Table 1). At the western and eastern ... in Subarea 48.2 based on data obtained over a number of years (Naganobu, 1993). The southern section ... be located as far to the south of the South Orkney Islands as possible. The eastern boundary probably also ... a product of two variables integrated over the depth range 0 to 200 m: krill density (g/m 3) and ... water mass transport (m 3 /sec) per nautical mile of the study area boundary. Also given are the results ... study area perimeter. Mean krill transport rate was 7.2 tonnes/hour/n mile with a standard deviation of ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 195–204 : Author(s): Kasatkina, S.M., V.N. Shnar, M.I. Polischuk, A.M. Abramov and V.A. Sushin
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years, subareas ... and vessels. The potent interaction effect between year and subarea suggests large spatio–temporal variability ... units (i.e. year, subarea, vessel, cruise and haul) based on a state–space model, separating ... in the binomial dis- tribution and zero inflated Poisson mixture model (Martin et al., 2005). The observed data ... Bayesian model. The models were composed of multistage cluster units (i.e. year, subarea, vessel, cruise ... , the parameters estimated by the Markov chain Monte Carlo (MCMC) method hardly show difference among years ... , subareas and vessels. The potent interaction effect between year and subarea suggests large spatio ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Author(s): Okuda, T. and M. Kiyota
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Some principles for fisheries regulation from an ecosystem perspective
being recognised (Tanaka, 1984; de la Mare, 1986a and 1986b). Di Stefano, Stubberbud and Williams ... . Simulations studies on management procedures. Rep. into Whal. Commn 36:429-50. - 338 - Di Stefano Ill ... man enters into competition for their food supply (it is well established that fisheries can affect ... by experiment could be of the order of hundreds of years (de la Mare, 1986a). In practice, it is likely ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Author(s): de la Mare, W.K.
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
48.4 in January 2000 are comparable with those obtained from the same subarea in recent years (March ... patterns of krill aggregations and distribution of krill biomass density were analysed with a view to ... density was greater than 1.5 g m-3. The biomass in these potential fishing grounds amounted to about 1.7 ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Author(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
shing vessels to carry out ran- domised research tows. Butterworth (1988a) concluded that CPUE in - di ... -effort (CPUE) index that is a good predictor of krill abundance for those years during which the fi ... season starts in December and ends in November, there was a fi shing season in the early 1980s when ... Statview. Results Trends in standardised fi shing efforts across years Figure 4 shows predicted number ... correlations with previously published interannual series of acoustic density estimates from scientific surveys ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Author(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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Notothenia (P.) guntheri stock status and TAC estimation in the area of Shag Rocks (Subarea 48.3)
commercially taken age groups (2-4 years); (b) Fishing intensity in the predicted period is at the level ... (2-4 years); (b) Fishing intensity in the predicted period is at the level of 1987/88; (c) Fishing ... (2-4 years); ( b) Fishing intensity in the predicted period is at the level of 1987/88; ( c ) Fishing ... Legends Data on average weight of N. guntheri individuals of different age, in different years. Age ... years (millions of individuals). N. guntheri biomass by years (thousand tonnes). Stock status ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 53-68 : Author(s): Shust, K. and R. Borodin
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Patterns and processes in the distribution and dynamics of Antarctic krill
summer 1981; the middle panels in Figure 2 indicate strong coherence in the distributions. Weber et al ... will represent our baseline model. In later versions of the model, grazing will be allowed to modify the basic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Author(s): Levin, S.A., A. Morin and T.M. Powell
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Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed with mitochondrial and intron DNA markers
. Over 5 000 D. mawsoni have been tagged in McMurdo Sound (~77°S) since 1972 (DeVries and Eastman, 1998 ... ). Of the 13 recaptures, there was one long-distance movement, almost 800 km north (72°S) after 3.3 years ... with mitochondrial and intron DNA markers Abstract / Description: Two molecular methods, mitochondrial ... appeared to be characterised by low diversity; no genetic variation was detected with restriction enzyme ... digested with the restriction enzymes, but there was no population differentiation among the three sea ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 43–51 : Author(s): Smith, P.J. and P.M. Gaffney
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Quantification of Southern Ocean phytoplankton biomass and primary productivity via satellite observations and biogeochemical models (submitted to the 2008 Joint CCAMLR-IWC Workshop)
melting sea-ice (e.g. Sedwick and DiTullio, 1997) and fuels an intense bloom of P. antarctica, which ... Ocean waters. J. Geophys. Res., 103: 15587–15600. Arrigo, K.R., G.R. DiTullio, R.B. Dunbar, M.P ... of mmolC m–2 or mgC m–2 per unit time (day or year). In this review, the term ‘model’ is reserved ... (euphotic zone depth). Dirr can be accurately calculated based on location and day of year, Copt can ... characteristics of these data and limitations, such as cloud cover and high solar zenith angle, are discussed with ... biogeochemical models for the Southern Ocean is presented, with a focus on those models that have been validated ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 247–265 : Author(s): P.G. Strutton, N.S. Lovenduski, M. Mongin and R. Matear
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Results of fish stock assessment survey, South Georgia, December 1987 - January 1988
Abstract / Description: Commercial fish stocks around South Georgia have been declining since the early ... Commercial fish stocks around South Georgia have been declining since the early 1970' ... Commercial fish stocks around South Georgia have been declining since the early 1970's. A survey to monitor ... , these stocks have been declining since the late 1970's (Kock 1985,1986; Gabriel 1987). In the early 1970 ... their changes over recent years. The analysis is based mostly on the comparison of estimates of stock biomass ... , it is the species that supported the commercial fishery in the South Georgia region in the early 1970's. Everson ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 19-52 : Author(s): McKenna, Jr., J.E. and S.B. Saila