Search results
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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
, including the interaction between years and age for these terms (i.e. linbin x linyr, linbin x quadyr ... to model the age class/length bin by year interaction since, if the non-parametric term consisting ... of the interaction of these two variables considered as factors was included in the GLM, then the residual deviance ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Author(s): Candy, S.G
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A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia
, and the population dynamics of and interactions between the host and parasite populations. A summary review ... of current knowledge is given in the next section. The basics of the host-parasite model are presented here ... of the likely interactions and characteristics of the system is built on the basis of current knowledge ... relationship was used. The prevalence, the fishing mortality and the degree of interaction between ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Author(s): Basson, M
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A study of Patagonian toothfish (Dissostichus eleginoides) post-tagging survivorship in Subarea 48.3
) and Pilling et al. (2001)), which were placed within the tank and removed on a daily basis. Only one tooth ... possible explanation is that toothfish spawn in late July and August at South Georgia (Agnew et al., 1999 ... . Agnew and J.C. Xavier. 2001. The stomach contents of Patagonian toothfish around South Georgia (South ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 279–289 : Author(s): Agnew, D.J., J. Moir Clark, P.A. McCarthy, M. Unwin, M. Ward, L. Jones, G. Breedt, S. Du Plessis, J. Van Heerdon and G. Moreno
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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
c Committee and the Commission (SC-CAMLR, 2001; CCAMLR, 2001), and a workshop was convened under the aus ... ., 1999; Boyd and Murray, 2001). While it may be preferable to index krill biomass and/or hydrographic ... 5090 –4.651 25.7 2.272 –4.422 2000/01 34.7 5263 –4.701 6.6 2.320 –4.176 2001/02 46.6 5240 –4.628 3.3 ... Georgia (Boyd and Murray, 2001; Boyd, 2002b). In contrast, the predator and krill data for the South ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins
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Status of krill target strength
is the following. The quantities of target strength, back scattering cross section, and mean volume backscattering ... fis the far-field scattering amplitude. The backscattering cross section, 0' or O'bs, is defined ... called the differential scattering cross section in the backscattering direction. Because ... the backscattering cross section is expressed in SI units. The TS of an idealised, perfectly reflecting sphere ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Author(s): Foote, K.G., D. Chu and T.K. Stanton
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Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses
weaken lower trophic levels by removals of fish such as grenadiers and skates as by-catch (Kock, 2001 ... interactions within food webs. This is based on the assumption that the isotope ratios (δ13C and δ15N ... , 1984; Vander Zanden and Rasmussen, 2001; Post, 2002). Recently, the combination of stomach content ... . Alfaro, A.C., F. Thomas, L. Sergent and M. Duxbury. 2006. Identification of trophic interactions within ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Author(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*
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Age determination of Notothenia gibberifrons from the South Shetland Islands, Antarctic Peninsula subarea (Subarea 48.1)
between false and annual checks in scales. Age determination by otolith cross sections proved ... determination by otolith cross sections proved to be the most reliable method. Mean length data at age presented ... determination by otolith cross sections proved to be the most reliable method. Mean length data at age ... quadrillages faux et annuels sur les ecailles. La determination de I'age au moyen de section transversale ... of N. gibberifrons are too thick for direct examination, therefore a sectioning technique was used. This technique ... I. specimens and 37 Potter Cove specimens were cut in sections of 0.4 mm thickness; otolith cross sections ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 143-160 : Author(s): Barrera-Oro, E.
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Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
undertaken in temperate European waters. The most recent of these took place in August 1995 at Uggdalseidet ... , 1993 section P2260E, pp. 15-16), which would equate to a 52.5% underestimation of krill biomass ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe
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Detection and quantitative estimation of krill concentrations by hydroacoustic instruments
of the acoustic cross-section (0) of shrimp calculated in relation to a mean length of 4.5 cm. As can be seen ... y 2 a = individual krill acoustic section, m space acoustic attenuation, db/m ; (1) J max 2 threshold ... . Determination of Antarctic krill acoustic back scattering cross section. Report to Bergen symposium ... MO Dependence of freshwater shrimp acoustic section on frequency (shrimp length - 4.5 cm ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Author(s): Yudanov, K.I.
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Some principles for fisheries regulation from an ecosystem perspective
as ••• any unit that includes all of the organisms in a given area interacting with the physical ... of perturbations (ACMRR, 1980; Pie1ou, 1981; Rig1er, 1982; Bender, Case and Gi1pin, 1984). Species interact ... ' might lie for a harvested species; nor, because of - 330 - interactions, does such a level ... of complexity of a system of interacting species may be abstracted into a subset of species of interest ...
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.