Search results
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A hybrid approach to acoustic classification and length estimation of krill
M. Azzali , I. Leonori and G. Lanciani Istituto di Scienze Marine ISMAR-CNR Sezione Pesca Marittima ... these measurement obstacles, a new method has been under development since the fi rst Italian survey to the Ross ... Sea (1989/90). The new method extracts information on species and size primarily from the acoustic ... ) and Bayesian decision theory (Devijver and Kittler, 1982). The performance of the new method is estimated ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Author(s): Azzali, M., I. Leonori and G. Lanciani
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
(Everson 1977) as well as on annual consumption of fish by Antarctic birds and mammals (Laws 1977 ... of new fishing tactics used. Both in the pre-1982/83 seasons (Slosarczyk et al. 1985) and in the 1983 ... likely, only the localization of new concentrations of N. rossii accounts for the high biomass density ... that new concentrations of fish of this species were discovered. Another increase in the mean length ... biomass density of C. gunnari stock. High biomass density appeared with 2-4 year intervals after ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Author(s): Mucha, M. and W. Ślósarczyk
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Differentiation of independent populations of Antarctic krill
that new forms of krill larvae have been found and five larval forms have been recognized ... forms in euphausiid (Crustacea Eucarida) ontogenesis. Marine Biology, vol. 27, N 2, p. 93-99 ... -populations is expected to correspond with the number of quasi-stationary cyclonic water circulations. At ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Author(s): USSR
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Captures accidentelles d’oiseaux marins autour de Kerguelen (division 58.5.1), campagne 94-95
Abstract: Incidental captures of seabirds were observed during 1994/1995 fishing campaign around Kerguelen islands (division 58.5.1). The most significant mortality has been noted during longlining operations for Dissostichus eleginoides (0.28 birds / line in November- December). Trawlers caused
Meeting Document : SC-CAMLR-XIV/BG/12 : Author(s): Délégation de la France
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Formulaire de soumission des évaluations préliminaires du risque d'impact négatif significatif des activités de pêche de fond proposées sur les écosystèmes marins vulnérables
Author(s): Délégation française Title: Formulaire de soumission des évaluations préliminaires du risque d'impact négatif significatif des activités de pêche de fond proposées sur les écosystèmes marins vulnérables Approval: Approved Secretariat Workflow Status: Content Approved
Meeting Document : SC-CAMLR-XXXIV/BG/02 : Author(s): Délégation française
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Analysis of haul data from the South Georgia krill fishery
Suite 303,5445 Mariner Street Tampa, F1.33609-3437, USA Abstract Data from individual hauls carried ... distribution and abundance. This is not a new concept and such data have been used previously (e.g. SC-CAMLR ... undertaken by Murphy et al. (1997). Here we describe new information about the location, timing ... loaded into a marine Geographic Information System (GIS) established using Arc/Info 7.2 (ESRI ... several hauls were undertaken by each vessel (average 7.9 in 1993,9.9 in 1995, and 7.0 in 1996), with ... establish the time required for each phase of the fishing operation. The times associated with shooting and ... hauling the net were usually short and showed little variation, whereas the time associated with the ... existed between years, with 1995 being a better season than either 1994 or 1996. Aspects of mesoscale ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Author(s): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes
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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
(Euphausia superba) was estimated to be 44.3 million tonnes and a new precautionary catch limit of 4.0 ... be implemented imme- diately with the limited information to hand, and improved as new information became ... ying sea birds, crabeater seals and squid. Thus, ai = Σdij/ΣΣdij, where Σdi is the demand in the ith ... penguins and lactating female Antarctic fur seals; consumption by male fur seals and fl ying sea- birds ...
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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Fishery report: Dissostichus eleginoides South Georgia (Subarea 48.3)
.................................................................... 41 By-catch of birds and mammals........................................................... 41 ... involving marine mammals with longline fishing operations ......... 42 Ecosystem effects ... catch, but they differ to a minor extent from a new catch series calculated by the Secretariat ...
Document : Site Section: Publications
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Phytoplankton distribution in the mixed layer: implication to krill abundance
There has been an increasing interest in the variability of biological marine resources, but little ... at the surface. Presumably phytoplankton continuously produce new generations. Thus, 1000 particles are added ... , 1987: 1-24. HAN, Y.-J., and S.-W. LEE. 1981. A new analysis of monthly mean wind stress over ... , environment and vertical distribution Marine Ecology -Progress Series 20: 203-206. MOUM, J.N., D.R ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Author(s): Yamazaki, H. and T.R. Osborn
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Fishery Report: Dissostichus eleginoides (TOP) Heard Island (Division 58.5.2)
............................................................... 26 6. Incidental mortality of birds and mammals ........................................... 27 ... -2009-alkall in WG-FSA-09/20, new M 86 400 (1 915) 0.629 5.765 0.78 TOP 58.5.2 13 ... their sampling period. TOP 58.5.2 27 6. Incidental mortality of birds and mammals 6.1 Incidental ... in Division 58.5.2 in 2011 (Table 9). Table 9: Seabird mortality totals and rates (BPT: birds/trawl ...
Document : Site Section: Publications