Search results
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
1 of Conservation Measure 90/XIV; the letters are used to identify each square. Gradient Min Median Mean Max ... in CCAMLR Conservation Measure 90/XIV. Conservation Measure 90/XIV outlines the three phases of the EHR ... in Conservation Measure 91/XIV) male P. spinosissima; catch rates (CPUE) are expressed in numbers of legal-sized ... of the 0.5" x 1.0" squares identified in Conservation Measure 90/XIV (see Figure 1). Haul-specific CPUE ... their release sites. Density estimates from the mark-recapture data were in the order of 50 000 to 100 ... Paper Title: Preliminary analyses of data collected during experimental phases of the 1994/95 and ... Champion during Phases 1 and 2 of the experimental crab fishery were analysed using generalised additive ... models and depletion estimators. Results from the generalised additive models show that the density of ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Author(s): Watters, G
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Comparison of age readings from scales and otoliths of the Patagonian toothfish (Dissostichus eleginoides) from South Georgia
m (Moreno, 1991), with the smallest specimens being found above 500 m. An increase in mean length of fish ... Toothfish from South Georgia Table 1: Distances from otolith nucleus (Mean O.R.) and scale nucleus (Mean ... is the main result of growth. Mean O.R. 294.35 460.41 572.69 656.44 727.50 802.09 877.29 934.41 ... ; parameters were calculated using the radius-age method (Aubone and Hemandez, 1996). RESULTS Mean S.R ... Paper Title: Comparison of age readings from scales and otoliths of the Patagonian toothfish ... compared for 105 specimens of the Patagonian toothfish (Dissostichus eleginoides) from the South Georgia ... region (Subarea 48.3). In 44% of specimens, age readings from both structures were identical. A Wilcoxon ... test for paired data (Ts = 0.256, n = 59) conducted on the remaining 56% showed that differences in age ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 191–203 : Author(s): Cassia, M.C
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
d u rendement annuel B long terme qui satisfait aux objectifs de conservation de la biomasse reproductrice des ... , HepeCTa ci IIpOMblCJia H a PaCqeTbI BbInoBa H BbInOBa Ha PeKpyTa. OH^ TaKXe MOXeT IIPHMeHRTbCR An53 ... OqeHKI? BbInOBa COBpeMeHHblX IIPOMblCnOB. A a e ~ c z npWMep no IIaTarOHCKOMy KJIbIKaqy, Dissostichus ... s h o u l d b e main ta ined . Initially, CCAMLR decided that the catch rate from any stock was no t t o exceed ... Paper Title: A generalised model for evaluating yield and the long-term status of fish stocks ... projection model for assessing the long-term annual yield which satisfies objectives for the maintenance of ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... period and set a further constraint on the long-term status of the stock relative to the pre-exploitation ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Author(s): Constable, A. and W.K. de la Mare
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
) and col- leagues (at BAS, UK and NOAA Fisheries, USA), models krill numbers but assumes a constant mean ... 100 m of the water column (upper 14 model levels). For each calendar month, a depth-weighted mean ... in the advection scheme, the monthly mean velocity fi elds were modifi ed according to Killworth (1996) to avoid ... errors associated with linear interpolation between mean fi elds. The particles were advected using ... – Antarctic Peninsula region Abstract / Description: Expansion of the krill fishery in the Scotia Sea ... Paper Title: A compilation of parameters for ecosystem dynamics models of the Scotia Sea ... assessment of methods for subdividing the precautionary catch limit amongst smaller spatial units. This paper ... compiles parameters for use in the ecosystem dynamic models that are needed to assess these methods. These ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Author(s): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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Joint Polish/American hydroacoustic survey of Elephant Island and the vicinity of King George Island, 1988
1 (the geographic boundaries for these areas and sub-blocks are shown in Figure 1). The mean density in each block ... is shown under the column labelled "Actual Mean, 120 kHz" and is in tonnes per n miles2 • The biomass ... that the total survey represents 16 623 n miles2 in 1988 vs 10346 n miles2 in 1987. The mean abundance (tonnes ... in 1988 instead of highly variable as it was in 1987. The mean abundance and total biomass for 1987 ... in most areas covered by last year’s survey. The total biomass in the vicinity of Elephant Island was ... estimated from 120 kHz data to be 260k tonnes and that in the Bransfield Strait south of King George Island ... was 39k tonnes for a total of 299k tonnes in the combined areas. The estimated 200 kHz survey data ... area north of King George Island and 309k tonnes (in 8 836 n m 2) in the expanded area around Elephant ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 357–377 : Author(s): Macaulay, M.C.
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
indicate onshelf. Mean distances were calculated for each of the local areas, and were standardised ... range. 1 a !- (I) Fishing season Figure 3: Values of monthly mean standardised trawling ... 2). Figure 3 shows the variation of monthly mean STP for the 1980/81 to 1999/2000 seasons. Only data ... /82,1986/87,1992/93) (Figure 3). The mean STPs for each fishing season were initially large ... commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the South ... at the beginning of fishing operations each season. In summer, biological factors that affect product ... Paper Title: Analysis of krill trawling positions north of the South Shetland Islands (Antarctic ... operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid to late 1980s ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Author(s): Kawaguchi, S. and K. Segawa
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Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies
and Kochkin, 1985). Sex ratio is about 1:1 with a slightly higher occurrence of females. The mean annual ... (Konstantinova, 1987, Atlantic sector): Lt= 12.48 [i-e-0·25 (t+0.68)]. The mean natural mortality of 0.86 ... myctophids. Some specimens are up to 20 cm with a mean length of 16 to 18 cm. Length compositions differ ... = 20.35 [i -eo.zs (t+O.t4>]. Mean natural mortality of 1.14 was calculated from one year's data ... . length composition of samples, are also illustrated in figures. The importance of studies on the role of ... Paper Title: Mesopelagic fish of the Southern Ocean- summary results of recent Soviet studies ... a part of the general multi-disciplinary program of research on Antarctic biological resources ... are sufficient to allow a description of the general ecology and distribution of these species. Some ...
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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Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf
Y Y a C T K O B . I l p e ~ n o n a r a e ~ c ~ , Y T O Y a c T b 3 a n a n ~ o E rpynnrrpoerw pb16bl M c t r p n p y e T K c K a n a M UIar Ha BTOPOM-TpeTheM rOny XM'3H11 ... pelagic surveys. The mean length of juveniles by concentrations were found over the entire subarea, month ... and 1988). In the east region of South Georgia the mean length of C. ~z~i innri was generally ... of South Georgia it was greater, due to lesser numbers of immature fish. At Shag Rocks, the mean length ... of mature fish in the west is related to the migration of maturing individuals from the eastern and ... , Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf Abstract / Description ... determine the age-length composition of mackerel icefish (Champsocephalus gunnari) from different parts of ... the South Georgia area. An analysis of the spatial distribution of C. gunnari size and age groups over ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Author(s): Frolkina, G.A
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Homogeneity of body length composition of Antarctic krill within the commercial zone
the area and exhibited similar mean lengths. Whereas in areas where the overall length composition ... . MORRIS and C. RICKETTS. 1985. Nocturnal changes in the mean length of a euphausiid population: vertical ... Abstract / Description: The homogeneity of krill (Euphausia superba) length composition in commercial ... that sampling from one part of the haul provides a reasonable estimate of length composition in the ... Paper Title: Homogeneity of body length composition of Antarctic krill within the commercial zone ... trawl catches (hauls) was investigated by comparing length compositions from different parts of the same ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 17–28 : Author(s): Ichii, T.
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Observations of fishing operations on a krill trawler and distributional behaviour of krill off Wilkes Land during the 1985/86 season
) as well as length composition - 345 - seems to be a possible means of detecting yearly changes ... (L.r.HO-E) Fig. 6. Profiles of diurnal variations of mean light intensity, vertical, distribution ... of krill, catch per haul and catch per towing time. Catch per towing time is standardized to mean catch ... Ha nepl10A BpeMeHI1, K:Of'Aa 'IaCTO BCTpe'IaJII1Cb rrOBepXHOCTHhle CK:OrrJIeHI1R. YJIOB 3a ... of krill off Wilkes Land during the 1985/86 season Abstract / Description: Japanese krill fishing ... operations were observed on board a commercial vessel and the actual operation described in detail. ‘Fish ... -finder’ was most useful in detecting swarms, while sonar was used to judge the towing direction. The size ... of fished swarms ranged from 100 m to 10 km with different distributions occurring in different ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Author(s): Ichii, T.