Résultats de la recherche
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Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (Subarea 48.3), Antarctica, during austral winters from 2002 to 2008
Paper Title: Annual changes in species composition and abundance of myctophid fish in the north ... samples collected by scientific observers on board Japanese commercial krill fishing vessels in the area ... 10 myctophid species were identified in the by-catch samples, among which Krefftichthys anderssoni ... ichthyofauna in this area, although this species used to be dominant in the Antarctic coastal waters. In ... on ta in in g fis h by -c at ch . D at e: 20 02 20 03 20 04 20 05 20 06 20 07 20 ... of myctophid fish: (a) Protomyctophum choriodon. (continued) A 0% 10% 20% 30% 40% 50% 60 ... ) 2004 (n=33) 2008 (n=643) 2002 (n = 20) 2004 (n = 33) 2008 (n = 643) 70 60 50 40 30 20 10 0 ... % 10% 20% 30% 40% 50% 60% 20 30 40 50 60 70 80 90 100 110 120 130 Standard length (m m ) P e rc ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 155–163 : Auteur(s): Iwami, T., M. Naganobu, K. Taki and M. Kiyota
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Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988
Paper Title: Size and density of krill layers fished by a Japanese trawler in the waters north of ... Livingston Island in January 1988 Abstract / Description: The size and density of fishable krill layers in ... trawler curtailed the haul before the layer ended in 30 out of 34 hauls and because the trawl net could ... 10 20 30 40 50 60 70 80 NET V 0 L U MED ENS IT Y ( g. m-3 ) Figure 3: Frequency distributions of ... BY A JAPANESE TRAWLER IN THE WATERS NORTH OF L1VINGSTON ISLAND IN JANUARY 1988 Y. Endo and Y ... . Shimadzu Abstract The size and density of fishable krill layers in the northern waters of Livingston ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Auteur(s): Endo, Y. and Y. Shimadzu
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Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic (Subareas 48.2 and 48.3)
Paper Title: Fishing intensity of the Soviet fleet in krill fisheries in the southern Atlantic ... commercial fleet on the krill population in different months during the 1987 to 1990 fishing seasons within ... on the krill population – on biomass and the density of krill aggregated in the fishing grounds – was ... was 30%. In April 1988 the fi shery took 19.7% of the available krill within the fi shing area. This ... intensity 36.4 ± 6.7% was observed in July 1989, when a large number of vessels (25–30 trawlers) operated ... caught in a given year. The results of synoptic sur- veys in Statistical Areas 48 and 58 were used to ... 20-year fi shing history, the precautionary catch limit had never been approached. Furthermore, the ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 15–35 : Auteur(s): Kasatkina, S.M. and V.F. Ivanova
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Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in the seasons 1986 to 1989
Paper Title: Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in ... surveys carried out along the Wilkes Land coast from 1986 to 1989 are presented in the paper. The surveys ... involved in the survey with one vessel conducting commercial krill fishing. The whole survey area from the ... account an area to the north of the edge of the continental slope. Each subarea was described in terms of ... for Fisheries 3 The annual period used is the split-year 1 July to 30 June. Split-year is denoted by ... the calendar year in which the split-year ends, i.e., 1989 indicates the split-year 1988/89). 151 ... 65°30'S. The location of areas where krill aggregations were observed is shown in Figures 2 to 4 ... 1986 50 12.2 1000 50.0 20 to 21 April 3 1986 300 3.5 158 47.5 24 to 30 April 4 1987 127 14.0 1510 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 149–162 : Auteur(s): Dolzhenkov, V.N. and V.P.Timonin
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Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
Paper Title: Defining smaller-scale management units to further develop the ecosystem approach in ... managing large-scale pelagic krill fisheries in Antarctica Abstract / Description: This paper discusses ... ecosystem but should be sufficiently independent for fishing in that unit not to inadvertently affect ... predators being monitored in other units. The South Atlantic region (Area 48) is used to illustrate how to ... explored in terms of the structure of animal populations. A group of animals that are continuously ... described in the text. 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 Year 0 30000 ... , although they have been important in some years since then. In this analysis, Elephant Island appears ... ) between the 1988 and 2000 split-years in each fi ne-scale area (0.5° latitude x 1° longitude) in the ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Auteur(s): Constable, A.J. and S. Nicol
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Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3
Paper Title: Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in ... holotrachys) caught as by-catch in the Patagonian toothfi sh (Dissostichus eleginoides) fishery in Subarea ... less accurate estimates of fish length. Seasonal variations in fish mass with reproductive condition ... in such studies should be representative of the size range consumed by predators. File: 09morley ... equations of the fi tted lines are given in the text. 90 80 70 60 50 40 30 20 10 0 40 35 30 ... 20 75.8 78.4 137 Otolith and body size relationships in bigeye grenadier, Subarea 48.3 ... grenadier, Subarea 48.3 0 10 20 30 40 50 60 70 80 90 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 ... from Heard and Macquarie Islands. 0 10 20 30 40 50 60 70 80 90 10 12 14 16 18 20 22 Otolith ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Auteur(s): Morley, S. and M. Belchier
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Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999
Paper Title: Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish ... commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999 Abstract ... / Description: The distribution and internal structure of commercial krill concentrations were investigated in ... the areas of the South Shetland, Elephant, South Georgia and South Orkney Islands in the spring and ... in one concentration can be as dense as 30 000 specimens per m-3 of water (Hamner et al., 1983 ... concentrations varied in each fi shing area and year. They fi rst started to occur in the Elephant Island area ... between February and April (this period varied with year), and then in the South Shetlands area (i.e ... year, represented a certain pat- tern which had been observed in previous seasons (Ichii, 1990), i.e ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Auteur(s): Jackowski, E
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Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in the southern Polar Front area (the area to the north of South Georgia is used as an example)
Paper Title: Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in ... / Description: From 1987 to 1989 VNIRO (USSR) conducted six trawl and acoustic surveys in the area to the north ... inter-annual variability in distribution, density and biomass of the most abundant species of myctophids ... , Electrona carlsbergi, are analyzed and summarized in this paper. The species is also known to form large ... time, E. carlsbergi concentrations were most frequently recorded in the eastern sector of the area (30 ... concentration density over localised sites of the PF'Z in December 1988. Month and Year Area of Concentration ... ). \ , \ , .\ .. ' ;.! \ \ .' \ ------\ \. \ \ \ Figure 10: Echocharts of E. carlsbergi concentrations in the evening (19:00 to 20:00) at depths of 40 to ... in this area on board RV Vozrozhdenie. They worked for almost two years from October 1987 to June ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 337–367 : Auteur(s): Kozlov, A.N., K.V. Shust and A.V. Zemsky
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A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
Paper Title: A review of data on abundance, trends in abundance, habitat use and diet of ice ... -breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop) Abstract ... / Description: The development of models of marine ecosystems in the Southern Ocean is becoming increasingly ... . Collating data from disparate sources, and understanding biases or uncertainties inherent in those data, are ... rest of the year, these species spend much of their time foraging in the ocean, but continue to haul ... Antarctic pack-ice in one year, but the resulting spatial coverage of the coordinated APIS program was ... seals, the proportion of seals underwater around so- lar midday in the summer months is between 20 ... times of year. In spring, when crabeater seals are breeding, shipboard surveys have found that ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Auteur(s): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan
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CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass
Paper Title: CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their ... possible utility for evaluation of relative changes in krill biomass Abstract / Description: Key catch-per ... -unit-effort (CPUE) indices used in Soviet krill fishery statistics, as well as the main sources of data ... fluctuations in haul duration due to the different fishing strategies used when targeting krill intended for ... 0 2 4 6 8 10 12 14 16 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Catch per vessel ... be 20% or more (Anon., 2001). Another, much smaller, peak in Figure 5 is associated with 8–12 hauls ... 1986 to 1991 (RIF statistics). 0 5 10 15 20 25 30 35 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... . 71 52 88 1 51 7 0. 20 66 14 0. 66 49 94 30 1 - - - - - - 24 . Su ba re ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Auteur(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov