Search results
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Environment–krill relations in the South Georgia marine ecosystem
environment. Mackintosh (1972) drew attention to the correlation between the size of the scientific ... greater than in wa rm seasons (e.g. 1936/37). Mackintosh (1972) deve loped this theme and highlighted ... spatial extent of whale catches taken in the early part of the century (Everson, 1984). Whales feed ... gradient (Sverdrup et al., 1942). Thus, the zonal air transport (east-west) corresponds to the meridional ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Author(s): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Estimation of krill (Euphausia superba) mortality and production rate in the Antarctic Peninsula region
is the age at which 99% of a cohort had died and it had been exposed to natural mortality only: M1 ... and highest in early summer pre-spawning season 1987/88 with more than 4400 x 109 krill. During winter 1986 ... season indicating a missing of a middle aged class (see below). 3.2 Biomass Krill biomass was mapped ... are also heavily exploited by whales when they are most abundant in early summer. Furthermore, other ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 159–176 : Author(s): Siegel, V.
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations ... EFFORT (CPUE) DATA FROM THE EARLY YEARS OF COMMERCIAL KRILL FISHING OPERATIONS IN THE ATLANTIC SECTOR ... for the fishing season; and Commercial krill fishing commenced in the early 1970s and the annual catches rose ... and years. Krill CPUE from Early Fisheries in the Atlantic Sector Table 1: Average CPUE (kilogram/hour ... ns ns ns 82 0.001 0.001 0.01 8 5 ns ns 8 6 ns Krill CPUE from Early Fisheries in the Atlantic ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Author(s): Siegel, V., V. Sushin and U. Damm
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Acoustic data analysis and models of krill spatial distribution
distribution is highly variable in space and time (Marr 1962), and krill often aggregates into dense swarms ... and schools are often constituent parts of shoals. Cohesiveness reaches its greatest development in swarms ... and schools. They are small in spatial extent, their area being measured in square meters. Average areal ... . Mean densities of individuals in swarms and schools are 103-1 05/m3. Swarms are cohesive groups ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Author(s): Morin, A., A. Okubo and K. Kawasaki
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CCAMLR ecosystem monitoring and management: future work
of the Antarctic marine ecosystem mostly comprise: (i) statistical models of the dis- tribution and abundance ... description). An early review of the program indicated that the results would vary in their value ... of fi shing arising from the models and/or assessments (Butterworth and Punt, 1999). An early attempt ... taking account of uncertainties did not appear until the late 1980s and early 1990s. Three published ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Author(s): Constable, A.J
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Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid and stable isotope analyses
Paper Title: Diet study of Antarctic toothfish caught in the east Antarctic based on stomach ... for Antarctic toothfish (Dissostichus mawsoni) in the small-scale research unit (SSRU) 5841C in the east ... toothfish and the trophic relationship between the toothfish and other species in the east Antarctic using ... Diet study of Antarctic toothfish caught in the east Antarctic based on stomach content, fatty acid ... toothfish (Dis- sostichus mawsoni) in the Ross Sea region. CCAMLR Science, 15: 35–53. Hanchet, S.M ... Science, Vol. 22 (2015): 29–44 29 Diet study of Antarctic toothfish caught in the east Antarctic based ... and Technology (GIST) School of Environmental Science and Engineering Gwangju 500-712 and Gangneung-Wonju ... (GIST) School of Environmental Science and Engineering Gwangju 500-712 Republic of Korea S.M ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 29–44 : Author(s): Park, H.J. , I. Yeon, E. Han, Y.J. Lee, S.M. Hanchet, G.W. Baeck, Y. Kwon, S.G. Choi, D.W. Lee and C.K. Kang*
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CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island
for the Japanese krill fishery in the 1987/88 season. Fishing operations in this area were conducted from early ... and greenness of krill were examined for each 10-day period from early January to late March as a case study ... early February to mid-March, fishing efforts were concentrated in the waters northwest of Livingston ... . There was no significant difference in both catch/tow and catch/towing time among 10-day periods from early January ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Author(s): Endo, Y. and T. Ichii
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
. Both species demonstrate an east to west migration throughout the season that is not related ... with no obvious pattern between months. Both species demonstrate an east to west migration throughout the season ... an east to west migration throughout the season that is not related to the pattern of fishing effort ... ) and replacing the lost catch. In addition, fishery managers must decide how to account for what can ... = 0.0003), although the pod size appears to be lower in the middle of the fishing sea- son (Figure ... obvious east–west movement with interac- tions concentrated to the northeast during May and spreading ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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A simple approach for calculating the potential yield of krill from biomass survey results
which is to be used in equation (1) is considered to be made in the middle of the season (Le. mid ... (for example) are present primarily in the late spring to early summer months. To ascertain whether this might ... the mass of laiU of age a at the start of the "year" (wa) is given by: (A.3) In the middle ... of the initial deterministic age-structure has been lost. (iv) In year y = 10 (the year before fishing ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Author(s): Butterworth, D.S., A.E. Punt and M. Basson
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A rationale for conservation areas within Antarctic waters
to productivity (growth and survival) within a unit. To date, apart from an early effort to identify separate ... of 1970/71 to 1972/73, Gilbert and Erickson (1977) proposed six residual pack ice regions - 521 ... A (January-February, 1972) and in location B (January, 1973) enabled densities to be compared with earlier ... pack ice recorded in the summers of 1970;71 to 1972;73, Gilbert and Erickson proposed zones for seal ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Author(s): Chittleborough, R.G.