Search results
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Estimating krill recruitment and its variability
confidence intervals on the mean density can be found as the roots of the following function: where xIra2 ... recruits in a population sampled by a net haul survey. Preliminary results from a series of five net haul ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Author(s): de la Mare, W.K
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Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990
composition of catches taken by Akademik Knipovich had three peaks corresponding to size groups of 16-18, 24 ... the South Georgia area. In February 1990 the size composition of catches taken by Akademik Knipovich ... significantly slower growth rate when compared with earlier data produced by most authors (see Table 1). It ... should be noted that the American scientist, R. Radtke, determined age by counting microincrements of ... determining ftsh age by counting daily microincrements on otoliths since, according to O. Pannella's data ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Author(s): Kochkin, P.N.
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Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies
,llCTBY H pa3MepHO-B03paCTHOMY COCTaBy. B HaCT05.1~et{ pa6oTe cyMMHpyiOTC5.1 He):laBHO ony6JIHKOBaHHbie ... Myctophidae are the most widely distributed and abundant, with more than 20 species found in the area. Most ... of myctophids, and where their eggs and larvae are found (Efremenko, 1987). Eggs and larvae of all myctophids ... adult myctophids are found in the upper layer, but in winter-autumn they migrate to the lower levels ... recently published results of these studies. A general description of mesopelagic myctophids is followed by ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Author(s): Sabourenkov, E.N.
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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
a rela- tively important prey item and were found in about 5% of stomachs in 2002. They were also ... for that year. Live amphipods and isopods were also found in a few stomachs. Bait, with marks indicating ... in both seasons. Fish hooks were also found in some stomachs. Other items recovered were a large ... by longlining and by potting from east Shag Rocks (South Georgia) in 300 to 600 m depths, and found that only ... (Subarea 88.1) Abstract / Description: The diet of Antarctic toothfish (Dissostichus mawsoni) captured by ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Author(s): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
. (v) regression equation parameters ai, ad and bi are found from: where the index i corresponds to selected ... , especially recently, for resolving various problems and a description can be found in Butterworth (1988 ... . NO,y+l is produced from (8) and from (5) N a,y+l is found for a = 1,2, .... ,ak. Thus the major output infonnation ... "ideal" value. No theoretical explanation was found for this case. Evidently this can be hardly done ... (determined by VPA) and fishing effort is described. The intersect of this regression must be equal to zero if ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Author(s): Gasyukov, P.S. and R.S. Dorovskikh
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Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove
of N. rossii catches from 1991 to 2006, the actual levels are half of those found in the early 1980s, while ... of N. rossii catches from 1991 to 2006, the actual levels are half of those found in the early 1980s, while ... trend of N. rossii catches from 1991 to 2006, the actual levels are half of those found in the early ... in N. rossii catches from 1991 to 2006, the actual levels are half of those found in the early 1980s, while ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Author(s): Barrera-Oro, E.R. and E.R. Marschoff
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Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area
found between fish length and daily otolith increments could be used for age differentiation of juvenile ... ). The radius of the first annulus ranged from 0.7 to 1.3 mm. The relationship found between fish length ... found between fi sh length and daily otolith increments could be used for age differentiation ... observed from November to July. The highest number of females at stage V was found in April–May. Spawning ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Author(s): Shcherbich, L.V
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
persisted locally; one of the authors (K.-H. Kock) found dead penguins on the shore of Cumberland Bay ... affected by the reproductive cycle unless there is high krill availability during the months around the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Author(s): Everson, I. and K.-H. Kock
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Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish
(Table 7). Areas with the highest effort (number of sets per unit area) are found in SSRUs 881C ... . However, fish that are captured by fishing gear that is not subsequently retrieved are generally not ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Author(s): Webber, D.N. and S.J. Parker
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
, salp density in January may have been low, or krill trawlers might have found an area of low salp ... Observntions nnd A i ~ n l y s i s . National Aeronautics and Space Administration, Washington, DC: 290 pp ... . Trawling positions seemed to be primarily governed by the distribution of larger mature krill, especially ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Author(s): Kawaguchi, S. and K. Segawa