Search results
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Environment–krill relations in the South Georgia marine ecosystem
expressed strongly in years of extreme conditions. The correlation with water temperature was more ... expressed strongly in years of extreme conditions. The correlation with water temperature was more ... longitudes 20°, 30°, 40' and 50°W. For the period 1973 to 1989, a further sea-ice dataset was available ... : (a), (b), (c) - in the same year; (d) - ice-edge position at 30°W averaged for December-January and at 30°W in the next June ... 0 80 (a) 0 0 c 70 0 . 5 60 O 8 2 S 5 0 ~ O o 0 W 4 0 - 3 0 r = 0.57 8 30 , 20 ... CCAMLR Science, Vol. 3 (1996): 13-30 ENVIRONMENT-KRILL ...
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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Protecting young fish and spawning aggregations of Champsocephalus gunnari in Subarea 48.3 (South Georgia): a review
of 3- and 4-year-old fish (27-40 cm). One, however, was composed almost entirely of 1 and 2 year olds (about 12 ... CCAMLR 'fishin year' would begin on 1 December of each year and end on 30 November of the fc%owing year ... each year. This would start the closure one month earlier than the closure start date in the 1998/99 ... . T a ~ a x c T p a T e r P i 2 B K n I o v a e T K O M ~ ~ I H ~ L ( I . ~ K ) CymeCTBylQmHX M e p ( ~ a n p H ~ e p , 0 MHHIIManbHOM p a 3 M e p e RYeH II pb16b1) H I IpeAn ... , and a strategy for the future protection of young fish and spawning aggregations of C. gunnari in ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 75–86 : Author(s): Parkes, G.B
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Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass
j . \, /"J~ .\I\r /' \~~ ~, I ~ r /" '~ U I --r I I I I I I (] 10 20 30 ~O 50 60 Length (rnm) 70 Figure 2: The length of frequency distribution of all krill ... WG-KRILL-91/30 ANALYSES OF ACOUSTIC LINE-TRANSECT DATA ... aKycTHlIeCKa5I CbeMKa 3arraCOB 300rrJIaHKTOHa. IIOJIYlIeHHble ,llaHHble aHaJIH3HpOBa- JIHCb C HCrrOJIb30 ... COCTaBHJIa TaKHM 06pa30M 11,7 TOHH KM-2. XOT5I o~eHKa Cpe,llHeti BeJIHlIHHbI He 3aBHCHT OT orrpe ... 155 786 km 2 was estimated to be 1.8225 x 10 6 tonnes (Coefficient of Variation = 9.5%). This gives an ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Author(s): Murphy, E., I. Everson and A. Murray
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A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
differences, due in part to bias arising from a large number of krill in just one of the station net hauls ... recruitment year due to krill spawned in 1994/95. File: 06watkins.pdf ... of krill in just one of the station net hauls. Therefore, when the number of station net hauls is limited ... in the population increased with a very successful recruitment year due to krill spawned in 1994/95. ... rt20prHM B 0 BpeMX 7 pefico~, IIpOBeAeHHblX C 1989 no 1998 r. 1994 r . KOnH~eCTBO KPMJlR rOn ... to 1993/94. There was generally a good separation between the l + and 2+ krill sizes in any one year ... size 32.3 mm) was somewhat larger than the 1+ krill seen in the previous two years but the 2+ krill ... . Cruises Year-class Boundaries (mm) 1 + 2+ 3+ 4+ 5+ JB10 - JR17 JR28 All cruises 25-30 33-40 41-48 ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Author(s): Watkins, J.L
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Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3
the season. These approaches, aimed at reducing seal entanglements, are similar to the two systems ... seal entanglements, are similar to the two systems implemented by Japanese vessels during the 2003 ... and groundrope connected to the warps. Two mesh planes, 44 m in width and 20 m in length, extended back ... into the body of the net by approximately 20 m and functioned similar to a giant ‘bag’ (Figure 3). Only two ... entanglements, are similar to the two systems implemented by Japanese vessels during the 2003 krill fi shing ... . Despite the device, seal entanglements were recorded for the fi rst two trawls. As a result, the gear ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 195–205 : Author(s): Hooper, J., J.M. Clark, C. Charman and D. Agnew
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Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas
that the stock could be expected to increase at an approximate rate of 30% per year with no fishing ... and catch over the next 20 years for the major species of concern at different fishing mortalities ... from the VPA data was also used for the survey analysis of one year's data. 3. Simulation Model ... for each of the 20-year runs. For each set of parameters, ten simulation runs were made. The average ... age of first recruitment is also an important consideration. The simulated yields correspond, on the ... Islands areas Abstract / Description: The benefits of conservation measures are generally based on the ... rebuilding of the depleted stocks and improvement in yields. It is desirable that such measures be based on ... the expected rate of recovery relative to rates of fishing. A simulation model based on a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Author(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel
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A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems
species. 5–25 Months–one year 3 Major Measurable effects on ecosystem structure or function. Large ... changes in abundance of many species and/or some extirpations. 25–50 One–few years 4 Severe ... . (2008) and implemented each year since 1997 by the ad hoc Working Group on Incidental Mortality ... , in line with many other CCAMLR processes. As mentioned above, both likelihood and con- sequence will each ... Paper Title: A risk-management framework for avoiding significant adverse impacts of bottom ... fishing gear on Vulnerable Marine Ecosystems Abstract / Description: CCAMLR adopted a new conservation ... measure in 2007 to ensure that significant adverse impacts of bottom fishing gear on Vulnerable Marine ... mortality on seabirds. Risk is broadly defined as the conditional probability of adverse impacts given ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Author(s): Martin-Smith, K
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The survivorship of rays discarded from the South Georgia longline fishery
- sideration. Normally only skates that are alive and undamaged are selected, with animals not being deemed ... for the duration of the experiment. During each experiment only one skate at a time would be placed in a tank ... , with a maximum of eight skates being tanked at any one time. At the time of placement of each skate ... hours, with observations being made at 6 and 12 hours to establish the condition of each animal ... / Description: Post-haulage survival experiments were conducted on 95 Raja sp. anon. cut off longlines at the ... season in Subarea 48.3. Capture depth had a consistently significant influence on the mortality of skates ... ) and the sex of rays also had some small influence on survivorship. Discard survivorship was 75% in ... can also be used to calculate the expected skate mortality within the fishery, based on depth of ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 155–164 : Author(s): Endicott, M. and D.J. Agnew
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Hook selectivity in the longline fishery of Dissostichus eleginoides (Nototheniidae) off the Chilean coast
~-------------------------------------------- 40 30 20 10 0 40 50 40 30 20 10 500-2000 m (Females) 50 60 70 80 500-2000 ... lorsqu'on augmente la taille des hame90ns droits (de 4 a 3, par ex.) ou lorsqu'on passe d'hame90ns droits ... % 3~~eKTHBHee KPlOlIKOB N~4. IIcnoJIb30BaHHe Pa3Hoti Ha:>KHBKH He npHBO.llHT K 60JIbmHM Pa3JIHlIH5IM ... for the Patagonian toothfish (Dissostichus eleginoides, Smith, 1898) in Chile started as early as 1955, the year ... ) off the Chilean coast Abstract / Description: Existing information from technical publications on ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 107–119 : Author(s): Moreno, C.A.
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Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles
on each type of behaviour and number of different types of behaviour displayed by one bird during ... of different types of behaviour displayed by one bird during the observation periods were compared ... Vigilance/anxiety Aggression 100 90 80 70 60 50 40 30 20 10 0 S ku a C om bu st io n ov er ... , for example weather or skua attacks. The best option is a 20–30 minute recording with the overflight around ... Department of Geoinformatics, Cartography and Remote Sensing Krakowskie Przedmieście 30, 00-927 Warsaw ... and distribu- tion has been used as one of the most important indication of ecosystem status and change (e.g ...
Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Author(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój