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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at night. In ... ..' .::', .. .. ····<····2·0·00 m 200 m Figure 2: Subsurface (30 to 35 m depth) currents derived from the paths of two ... Inshore cP. I N = 1084 60r N = 1084 -->- 10 foraging 0 40 c:: Cl) 6 t ::J areas 0- s Cl) 20 .J1L 1 ... ) D areas ::J 0- S 20 - Cl) 1- U. 0 0- I I r-f I 1 I I I 1-1--"1 ...... '" cv 0" ~ g ... ;, () 20 30 40 50 60 ~~~~~ ~ ~~~~£1 " " " " Body length ( mm ) Maturity stages Figure 5: Body length and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 273–285 : Автор(ы): Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu
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Revised estimates of seabed areas within the 500 m isobath of the South Orkney Islands (subarea 48.2) and consequences for standing stock biomass estimates of nine species of finfish
the 50-500 m isobaths than Everson039;s estimates, though changes in area are specific to the depth ... examined, the point estimate of total biomass increased from 5 to 30% for eight species and decreased by 20 ... extends between 60.2 o-62.2 o S latitude and 42.5 o-47.5 o W longitude. From the integrated datasets ... 250-500 m depth intervals. The updated estimates are about 1 424 (20%) n miles larger in area within ... eight species and decreased by 20% for one. Une carte bathymetrique revisee des iles Orcades du Sud ... PaCCMOTPeHHbIX BNAOB OqeHKa o6qet ~ H O M ~ C C ~ I BO3pOCna Ha 5-30% AJIR 8 BHAOB M COKpaTHJIOCb Ha 20% AnR ... total aumento entre 5 a 30% para ocho de las nueve especies de peces examinadas, y disminuy6 en 20 ... available acoustic seafloor data. The region extends between 60.2"-62.2"s latitude and 42.5O47.5"W ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 197–204 : Автор(ы): C.D. Jones
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A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery
modified objective function: { }0 1 2 20 2 2, , , 0 '0 min k Q u u u K k k k ss R S x x u u u l ... of 2 2 20 0 ' k k k Q R S x x u u u æ ö÷ç - + - + ÷ç ÷÷çè ø in steady state, which can be ... feedback loop have a nominal time‐step of one year. The controlled system (here the operating model ... - ment derive from control theory (Cunningham and CCAMLR Science, Vol. 20 (2013): 119–137 119 A ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Автор(ы): Hill, S.L. and M. Cannon
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Midwater trawl catchability in relation to krill and possible ways of assessing gross catch
theoretical calculations. A comparison of the experimental hydroacoustic assessment with the calculated one ... Rhomboid a=lOO (30) mm a=80(20)mm a=60 (18) mm 0.2 0.2 0.2 Hexagonal a=lOO (20) mm a=80 (14) mm a=60 ... krill which has passed through area (s) of the trawl cover over time (I ). We will assume that krill ... -section diameter of 5 to 6 m and a mesh bar of 30 mm, then 0.33 kg of laill will escape through one ... 70 60 50 40 ~ 30 I» o ~ 20 g. f 10 \-l o 0,9 10,7 20,5 30,3 40,1 ~9.9 59,7 3 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Автор(ы): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov
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Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed with mitochondrial and intron DNA markers
with mitochondrial and intron DNA markers Abstract / Description: Two molecular methods, mitochondrial ... the 13 recaptures, there was one long-distance movement, almost 800 km north (72°S) after 3.3 years ... , 1984; Williams et al., 1994), but DNA analyses showed evidence for two genetic units, one around ... air dried and resuspended in 40 µl sterile water and stored at –20°C. Two classes of markers, mtDNA ... , 14 nt). The D. mawsoni amplicon contained two variable sites in the con- trol region. One SS fi sh ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 43–51 : Автор(ы): Smith, P.J. and P.M. Gaffney
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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
, including two indicator-only taxa. File: 05parker-bowden.pdf ... : (L = <10 years; M = 10–30 years; H = >30 years) Growth rate: (L = mature <10 years; M = mature 10–20 ... Zealand fjords approached 30 years of age (Miller et al., 2004). Stylasterids can be large, up to 1 m in ... a longev- ity class of Low, 10–30 years as Medium, and more than 30 years as High. 111 ... years; H = mature >30 years or evidence for sporadic recruitment events) Fragility: (L = Flexible ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Автор(ы): Parker, S.J. and D.A. Bowden
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Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz
differences in the mean back-scattering strength of swarms simultaneously insonified at these two frequencies ... in average target strength at these two frequencies. The results are in good agreement with recent ... effect of possible differences in the two integrator systems. One integration was done between 5 and ... . Research ship Africana. Spec. Rep. Sea Fish. Res. Inst. S, Afr. 3: 80. BIOMASS. 1986. BIOMASS Report 40 ... ~ Z 30 « o "" ~ ~ 20 Z 10 .' . -I, - A9880 /' 1\ --- A9885 1\ •••• A9891 ... WG-KRILL-90/28 MEASUREMENTS OF DIFFERENCES IN THE ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Автор(ы): Hampton, I.
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A rationale for conservation areas within Antarctic waters
: The application of potential conservation measures listed in Article IX 2 of the Convention requires ... marine living resources’ (Article IX 2 (b)). In order to select meaningful boundaries for such areas ... available, the following six potential conservation areas are proposed: 70°W- 15°W 15°W- 40°E 40°E- 90°E 90 ... management by open and closed areas (Article IX 2 (g). So far only one area has been closed to fishing ... - DEGREES EAST DEGREES WEST I 20 40 60 eo 100 120 140 160 180 160 140 120 100 80 60 11 I I I I I I I I I ... potential conservation measures listed in Article IX 2 of the Convention requires "the designation of ... " (Article IX 2 (b)). In order to select meaningful boundaries for such areas, first priority has been ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Автор(ы): Chittleborough, R.G.
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Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system
/ Description: An exchange system was established among Members of CCAMLR to compare age determinations for the ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... 2 !ID 0 s 18 15 20 25 1 ength (crtd Figure 8: Length versus age plot from comparative age ... following table indicates that agreement between two readers was in the order of 80%. Agreement could have ... five investigators examined both structures. Two (4 and 5) were experienced and one (2) was less ... . Two of the investigators were experienced (1 and 3), one was experienced in ageing C. gunnari by fin ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Автор(ы): Kock, K.-H.
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The influence of bait quality on the sink rate of bait used in the Japanese longline tuna fishing industry: an experimental approach
. The addition of a 20 g lead sinker to a conventional 20 g tuna hook reduced the sink time of bait ... refer to thawed bait. lwashi 80 S $60 ! - C . r40 i7, 20 0 0 - - : - : - I ... the effect of added weight (sinkers) on the sink rates of bait. Lead sinkers weighing 10 g, 20 g, 30 ... , 80% of small baits and 20% of large baits floated when thawed (Figure 1). As mentioned above, these ... . Fish with inflated swim bladders floated, however, even when thawed. The addition of a 20 g lead ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 123–129 : Автор(ы): Brothers, N., A. Foster and G. Robertson
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