Resultados de la búsqueda
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
correlations with previously published interannual series of acoustic density estimates from scientific surveys ... and TSDT for the whole of Area 48 across years. 0 1 2 3 4 5 6 7 8 9 10 19 80 /8 1 19 81 ... cant correlations with previously published interannual series of acoustic density estimates from ... for those years during which the fi shery has operated. In the late 1980s, several attempts were ... abundance, krill density, krill fi shery information, CCAMLR 3 Japanese krill fi shery – the use of CPUE ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Autor(es): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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Patterns and processes in the distribution and dynamics of Antarctic krill
food availability? 3. What is the interaction between spatial patterns and fishing behavior? 4. How ... comparison with the Antarctic ecosystem, estimation of fractal dimensions of phytoplankton patches suggests ... Southern Ocean in austral summer 1981; the middle panels in Figure 2 indicate strong coherence in the ... approach, 283 this assumption will represent our baseline model. In later versions of the model ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Autor(es): Levin, S.A., A. Morin and T.M. Powell
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A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
assuming normal errors with constant coefficient of variation using iteratively weighted least squares ... using VP maximum likelihood (MLP) with length-bin relative probabilities defined using fishing ... , the mean trend in observed AGR values with release length compared with those obtained using IWLS ... -estimated parameters. A young-age adjustment (less than 5 years old) to the VB model is also given in order ... parameters. If there is an early-age (i.e. below age 5) phase of growth which is different from a later-age ... (equation 3) went some way towards rectifying this problem (see Figure 4b) with a predicted mean length-at ... , ignoring VP sampling and assuming normal errors with constant coeffi cient of variation using iteratively ... the VB curve fi tted using VP maximum likelihood (MLP) with length-bin relative probabilities defi ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Autor(es): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
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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)
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 ... oceanic reservoir. The Southern Ocean (here mostly defined as south of 50°S) is a vast province with ... and limitations, such as cloud cover and high solar zenith angle, are discussed with regard to their ... biogeochemical models for the Southern Ocean is presented, with a focus on those models that have been validated ... provide a fluorescence channel as an indicator of phytoplankton physiol- ogy (Figure 3). Throughout much ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 247–265 : Autor(es): P.G. Strutton, N.S. Lovenduski, M. Mongin and R. Matear
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Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands
using microscopes (microscopical scale) was elaborated and adapted to correspond with the macroscopic ... (i.e., unaided visual observation) scale commonly used. The first five stages correspond with those ... individuals (45%) was found, together with a relatively low occurrence of females that spawned or were in ... development stages are described in Table 3. Oocytes in early secondary vitellogenesis (Table 3, stage 4 ... smaller-sized immature fish (stage 1) and fish in the stage of early maturation (stage 2). Stage 3 ... . gunnaui. Maturity Stage 1. Immature 2. Early maturation 3. Advanced maturation 4. Total ... correspond with the macroscopic (i.e., unaided visual observation) scale commonly used. The first five ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Autor(es): Macchi, G.J. and E.R. Barrera-Oro
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On reproduction of Electrona carlsbergi (Tåning)
. Maturation of ovaries is continuous, and spawning is serial. The spawning season is long and coincides with ... , and spawning is serial. The spawning season is long and coincides with summer/autumn in the Southern ... species coincides with the notal zone. A study of gonads in female E. carlsbergi from the Antarctic ... Convergence and the Argentine Basin areas has been undertaken with the aim of determining where and when this ... analysis. Preparation and histological treatment was conducted in accordance with standard methods ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 397–409 : Autor(es): Mazhirina, G.P.
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Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean
. 3 ~ o - nepBax KonnvecTseHHax oqeHKa Ann M. carinatus B TOM peruoae. M . carinatus mnxncn ~ a ... in recent years due to the increase in longline fisheries for toothfish (Dissostichus spp.) in the ... information on Macrourus carinatus along with the first quantitative assessment of the abundance of this ... ). They found that juveniles and adults were segregated in this region, with immature fish located in ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 171–178 : Autor(es): van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb
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Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3
second net was also confi gured with measure 3. Esperanza The Esperanza did not deploy any specifi c ... . Mitigation measures Atlantic Navigator The Atlantic Navigator was equipped with a seal- exclusion device ... and was employed thereafter for the duration of the cruise (Figure 3). This device was still ... ’ (Figure 3). Only two subsequent seal entanglements occurred. A seal was discovered inside the ‘bag ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 195–205 : Autor(es): Hooper, J., J.M. Clark, C. Charman and D. Agnew
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Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia
effective with regard to time and cost. Values of fish growth parameters using the generalised von ... 24 years. This is very close to the maximum age of 22.8 years calculated from Taylor's formulae ... (with annuli indicated): (a) age estimated as 4 years, total length 48 cm; (b) age estimated as 9 years ... ); (d) age estimated as 21 years, total length 173 cm (indicated ages: 1, 3, 8 and 21). Age of ... effective with regard to time and cost. Values of fish growth parameters using the generalised von ... , = 207.01 cm, K = +0.0748 and to = -0.2898. The maximum age of D. eleginoides was found to be 24 years ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Autor(es): Cassia, M.C
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Southern elephant seals and CCAMLR
been recently confirmed for the Macquarie Island stock. The availability of food, competition with ... rapidly growing fur seal populations and competition with fishing fleets have all been suggested as ... recently confirmed for the Macquarie Island stock. The availability of food, competition with rapidly ... growing fur seal populations and competition with fishing fleets have all been suggested as possible ... vary with subpopulations. At Iles Kerguelen, on the other hand, the population decline since 1970 ... degree of long-term fluctuation in cow numbers increased with density. Based upon censuses of parts ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 465-473 : Autor(es): Bester, M.N. and D.G.M. Miller