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An overview of tagging skates (Rajiformes) and CCAMLR skate tagging data
, longevity, discard survival and abundance. Most Antarctic skate species are little known and, coupled with ... conducted in the CCAMLR area for several years now, only preliminary observations have been presented to ... tag loss and tag shedding rates in fish (with emphasis on elasmobranchs), a summary of CEFAS tagging ... of the tagging work undertaken under the auspices of CCAMLR in the Southern Ocean with comments on ...
Meeting Document : WG-FSA-13/33 : Автор(ы): S.R. McCully, D. Goldsmith, G. Burt, R. Scott and J.R. Ellis (United Kingdom)
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VARIATION IN DEMERSAL FISH SPECIES RICHNESS IN THE OCEANS SURROUNDING NEW ZEALAND: AN ANALYSIS USING BOOSTED REGRESSION TREES
species richness, with highest richness occurring at depths of 900 to 1000 m, and with a broad plateau of ... moderately high richness between 400 and 1100 m. Richness was higher both in waters with high surface ... temperature was also important, with lower richness occurring in waters that were cooler than expected given ... constrained to reflect the known performance of trawl gear. Species richness declined with increasing cod-end ...
Meeting Document : WS-VME-09/P04 : Автор(ы): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.
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Numerical model of ecosystem including Euphausia superba Dana as a key species in circumpolar region
integrated model with the above 5 items. This year, we have developed an OGCM and a one dimensional ecosystem ... applied to primary production in Antarctic Ocean (3) to develop an ecosystem model able to describe krill ... ) with seven compartments and coupled with a one dimensional mixed layer model for calculating the ...
Meeting Document : WG-Krill-94/26 : Автор(ы): M.J. Kishi and M. Naganobu (Japan)
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A summary of the commercial fishery for mackerel icefish Champsocephalus gunnari in Subarea 48.3 during the 1997/98 season
briefed before the short trip to South Georgia. It is unclear whether the poor catches by the FV Betanzos ...
Meeting Document : WG-FSA-98/53 : Автор(ы): G. Parkes, A. King and C. Jones (United Kingdom)
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Selectivity of standard polish commercial trawl codends on Antarctic fishing grounds
Abstract: steelon codends used in commercial fishery, with a nominal mesh size A = 80 mm and A ... = 100 mm, made of double twines with a thickness of 4.2 mm. The studies covered 6 major fish species. 1 ... tendency to pass through meshes of the codend than Antarctic icefish and bumphead notothenia. 3. The ... result of the application of webbing with permanently open meshes for codend construction. 4. The most ...
Meeting Document : SC-CAMLR-VII/BG/11 : Автор(ы): J. Zaucha (Poland)
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A bioenergetics model for estimating prey consumption by an Adélie penguin population in east Antarctica
CEMP site at Bechervaise Island using 13 years of data, a year when penguins successfully reared chicks ... , and a year with low breeding success. On the basis of variable breeding success and the proportion of ... model parameters using Monte Carlo simulation. The model was parametised with data obtained from the ...
Meeting Document : WG-EMM-16/P10 : Автор(ы): D. Southwell, L. Emmerson, J. Forcada and C. Southwell
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ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA
hierarchical Bayesian model. The model was composed of multistage cluster units (i.e., years, subarea, vessels ... length and bycatch fish number, the parameters estimated by MCMC showed the variation among years ... formula with the variance terms derived from the Bayesian model. For both krill length and bycatch fish ... , subareas, and vessels. The potent interaction effect between year and subarea suggests large spatiotemporal ...
Meeting Document : WG-EMM-11/39 : Автор(ы): T. Okuda and M. Kiyota (Japan)
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Aspects of the ecology of the bigeye grenadier at South Georgia
over 30 years and attaining lengths in excess of 80cm (Lt). Von Bertalanffy growth parameters were ... ) and occurred at around 9 years old. Estimates of natural mortality and Pauly’s growth performance ... macroscopic and histological investigation. Mature ovaries had oocytes at all developmental stages with ... between 22 and 55% likely to be spawned each year. Absolute fecundity ranged from 22,000 to 260,000 eggs ...
Meeting Document : WG-FSA-03/16 : Автор(ы): S.A. Morley, T. Mulvey, J. Dickson and M. Belchier (United Kingdom)
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On problem of natural subdividing of Antarctic krill’s geographic area (an application to the monitoring of fishing)
with emphasis on fisheries regions distribution are considered on the base of consisting data of ... several years, which is very expensive and impossible in reality. Information of observers from commercial ... trawlers as well as data from searching ships are a serious help in this respect for intermediate years ...
Meeting Document : WG-KRILL-93/37 : Автор(ы): R.R. Makarov and L.L. Menshenina (Russia)
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Age and growth in length of Micromesistius australis, Norman, 1937 (Pisces, Gadidae), in the southern zone of the Argentine Sea
Herwig and Shinkai Marú in agreement with the Argentine Republic, in the years 1978 and 1978/79 ... )] giving Lt in cm and t in years. For the estimation of the general equation parameters the first 15 age ...
Meeting Document : SC-CAMLR-V/BG/31 : Автор(ы): Delegation of Argentina
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