Résultats de la recherche
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The survivorship of rays discarded from the South Georgia longline fishery
only skates that are alive and undamaged are selected, with animals not being deemed fi t for tagging ... discard survivorship might be under this new discard regime (i.e. cutting rays off at water surface ... South Georgia in the 2003 season. The experiment was undertaken during May and June 2003 with the ... foredeck of the fi shing vessel Isla Sofía, with each tank having the capacity to hold an estimated 672 ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Auteur(s): Endicott, M. and D.J. Agnew
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Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata (Fischer, 1885) in January/February 1985
Ishlnd is still under investigation t!1i~ paper deals mainly with the South Georgia stock. 2 ... February) and 37 hauls off Elephant Island (21 - 28 February) using a 200' bo- torn trawl with a sr.1211 ... . (1833): Voyages and rliscoveries "in the South Seas 1792 - 1832. Collins & HanneL, New York, 512 p ... • Antarctic Expedition 1985 with FRV ··Walther Herwig .. +------...... .__-__ .~--,_ ,,--- -~ Noto1henla ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 33-57 : Auteur(s): Kock, K.-H.
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By-catch, growth and feeding of Antarctic juvenile fish taken in krill (Euphausia superba Dana) fisheries in the South Georgia area, in 1992
1) using a modified version of the commercial midwater trawl 74/600 with a mouth area =400 rn2 and ... ). Juveniles were then analysed for taxonomic identification, stomach content, standard length (with an ... accuracy of =l mm) and weight (with an accuracy of ~0.01 g). The main components found in the fish ... tonne of krill caught, ranged widely, from 700 to 18 900 specimens (Table l), with an arithmetic mean ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 129–142 : Auteur(s): Pakhomov, E.A. and S.A. Pankratov
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Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and Prydz Bay
three major research directions, the findings of which might then be seen in inter-relation with the ... variables with biological patterns and distributions of species) ; 2. Life-cycle strategies and the ... .11), are envisaged to be regularly conducted with data on physical and chemical parameters of the ... -dwelling seals in the coastal part of the area, should be made in conjunction with the above studies ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 355-362 : Auteur(s): USSR
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Analysis and modelling of the Soviet Southern Ocean krill fleet
biomass be detected? The krill distributional model begins with individual krill which are assumed to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 127–235 : Auteur(s): Mangel, M.
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A functional division of Electrona carlsbergi (Tåning, 1932) area of habitat in relation to the latitudinal zonation of the Southern Ocean
! como individuos en distintas fases de maduracion gonadal. 1. AIMS AND TASKS The search for new ... by the theory that the reproductive part of the E. carlsbergi distribution area coincides with the ... performed using a midwater cable trawl with a mouth opening of 3 600 m2• Trawling speed was usually 3 to ... 3.5 knots; with a trawling duration of 1 hour. Because of the known relationship between the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 369–395 : Auteur(s): Zemsky, A.V. and S.A. Zozulya
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Trends in population size and breeding success at colonies of macaroni and rockhopper penguins, Marion Island, 1979/80–1995/96
overall decreases in the number of clutches laid at all three colonies monitored, with considerable ... Hole, trends in chick survival were closely matched up until 1994/95, with major divergence observed ... at the onset of, breeding. The same does not appear to be the case for macaroni penguins. With the ... hatching success of macaroni penguins at Van den Boogaard River with the other two colonies is largely ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 89–103 : Auteur(s): Cooper, J., A.C. Wolfaardt and R.J.M. Crawford
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Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica
rope was equipped with a 40 cm diameter bobbin gear. The mouth opening was, on average, 12 to 13 m ... wide with a headline height of 4 to 5 m. Nets were towed for a standard haul duration on the bottom of ... with little benthos in the net. Of the benthos, sponges were usually the most abundant taxon in the ... codend. At four stations, the biomass of sponges exceeded 100 kg with the maximum being 202 kg at ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Auteur(s): Constable, A.J.
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
. The krill yield model uses a biased estimate of the median pre-exploitation spawning biomass with a ... median pre-exploitation spawning biomass with a method for correcting this bias in the level of ... la Mare, 1996), where 5, is a single calculation of the spawning biomass in a population with a ... , the median level of escapement at the end of the projection period with no catches will not be ... corrected by dividing it by the value for escapement obtained when the projections are undertaken with ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Auteur(s): Constable, A.J. and W.K. de la Mare
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Choosing distance between acoustic survey tacks
with the lowest expenditure. Since the error in biomass assessment depends on the variability of ... assessment error and the tack frequency when surveying density fields with different * The variation ... series of surveys with different distances between tacks was simulated for each field of density ... r calculated by formula (1), the biomass assessment error does not, with 95% probability, exceed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 153-164 : Auteur(s): Kalikhman, I.L., Z.I. Kizner, B.R. Zaripov and W.D. Tesler