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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
The number of aggregations per tow were: one (30 instances); two (one instance); three (two instances ... ); and six (one instance). All the aggregations were layers except the last instance where six swarms were ... are fished per haul in his modified simulation model. In this study, however, one layer was fished per haul ... selecting larger aggregations than the average-sized ones found by research vessels. Towed length ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Author(s): Endo, Y. and Y. Shimadzu
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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
that considerable refi nement of these estimates is possible. Qualitative conclusions are that: under the fi rst two ... in some of its traditional fishing grounds during years of low krill availability. Under all five options ... . Qualitative conclusions are that: under the fi rst two options a substantial portion (>65%) of the catch ... years of low krill availability. Under all five options there would be little effect on the existing ... h O rk ne y P el ag ic A re a (S O P A ) 0. 00 64 20 0. 02 07 66 0. 29 85 94 ... -pelagic SSMUs during at least one- third of the years. This would not, however, affect the allocation ... Fi gu re 1 : Sm al l- sc al e m an ag em en t un it s (S SM U s) in S ub ar ea ... d in g th e ar ch ip el ag os in t he S co ti a Se a. S SM U s ar e: ( 1) A nt ar ct ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Author(s): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins
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Editorial
to CCAMLR meetings and provide the basis for the science-based decision-making by CCAMLR. One of the most ... and provide the basis for the science-based decision-making by CCAMLR. One of the most striking changes over ... of the CCAMLR Scientific Committee. Over those 30 years, several thousand scientific papers have been presented ... striking changes over the past 30 years is the increase in the number of scientific journals in which work ... -making by CCAMLR. One of the most striking changes over the past 30 years is the increase in the number ... with the 30th meeting of the CCAMLR Scientific Committee. Over those 30 years, several thousand scientific ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 167 : Author(s): Editors
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The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3
and amount of catches by fine-scale rectangle (half a degree of latitude by one degree of longitude) and ten ... that the icefish ChampsocephaZus gunnari made up one quarter of the catch. While it is understandable ... 9 o 7 6 6 4 3 2 1 o - - - - - - - - - ~ - - - - - - - - - t5 ) \~ I 10 I 11S I 20 21S 30 I 31S T 40 41S I ISO IS IS 80 81S 7i I Size ... NOT LXX Other Species eS) eW) 1987 Nov 1-10 ANI 54 38 38 0 14 0 0 11-20 ANI 54 38 79 0 29 0 0 21-30 ... data and reports to the CCAMLR Working Group on Fish Stock Assessment indicated that this species was ... fishing is likely to have a significant effect on other species. P.b. guntheri has been reported as a by ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 275–283 : Author(s): Everson, I. and C. Mitchell
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Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
. The statistical models were developed from first principles and incorporated both within- and between-year ... or decrease after an impact. Fledgling weight was found to decline through the fledging period each year ... , but there was no evidence that the rate of decline differed between years. A consequence of this finding is that it may ... be possible to simplify future monitoring, such that fledgling weight is measured at a single time each year ... and the limited gain from weighing more than 30 birds each year. This is the case for both one- and two-tailed ... from 12 split-year breeding seasons (1990/91 to 2001/02) which com- mence in October of one year ... for years 1994/95 and 1997/98, and in years 1990/91 and 1999/2000 data were obtained in only one five-day ... at just one time in each year. This would have substantial operational advantages for field programs ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Author(s): Emmerson, L.M., C. Southwell and J. Clarke
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Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
IIpOnYKTa (HanpH~ep, qHCJIeHHOCTb canbn r? Aonx sene~oro K ~ M I I X ) , Tatime ... Shetland Islands is one of the mail1 commercial krill fishing grounds. An enormous amount of fishing ... . The STP index has allowed us to conduct a one-dimensional analysis of trawling positions (latitudinal ... pente du plateau vers la fin des annees 80 et du plateau vers l'exterieur du plateau dans les annees 90 ... operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid to late 1980s ... effect on trawling positions. Ice conditions for recent fishing periods were also demonstrated to have an ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Author(s): Kawaguchi, S. and K. Segawa
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The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery
are away from their colonies and their average swimming speed as reported by, for example, Lishman (1985 ... at each site during every season in which tracking and one in Subarea 88.1 (Figure 1). This work ... IIepkiOn 1972- 1994 rr. Lista de las tablas Tabla 1: Numero de pingiiinos adelia rastreados, por ... , the numbers of trips and the years over which tracking took place are provided in Table 1. Trivelpiece et ... , Euphausia superba. Locations of penguins on foraging trips were compared with historical records of fine ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Author(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson
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The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3
4 November 1991 to 10 March 1992. A total of 3 382 tonnes was taken by one Bulgarian, five Russian and eight ... 1991 to 10 March 1992. A total of 3 382 tonnes was taken by one Bulgarian, five Russian and eight ... ") [Japanese brand, sizes 7 and 9; width 30 to 35 mm]; • Type III - hooks fully recurving, in one plane ... tonnes was taken by one Bulgarian, five Russian and eight Chilean vessels. The maximum catch taken ... russe; 0,2 dans la flotte bulgare. Les differents types d'hame<;ons utilises expliquent ... 1). The fishery was prosecuted by one Bulgarian, five Russian and eight Chilean vessels, fishing for different ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 31–48 : Author(s): Agnew, D.J. and C.A. Moreno
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Maximum entropy reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia, 1996–2000
of mean krill density within two survey boxes (dimensions 80 km × 100 km) north of South Georgia ... Entropy (MaxEnt) reconstructions of krill distribution and estimates of mean krill density within two ... survey boxes (dimensions 80 km × 100 km) north of South Georgia. The reconstructions were generated from ... 80 km transects in each box, providing about 1 600 density estimates per box. The MaxEnt technique ... Georgia are apparent from one year to the next in the MaxEnt reconstructions. These are not immediately ... that is compared to the data (the so-called ‘visible’ reconstruction) is a blurred ver- sion of the hidden one ... that the reconstruction may be smooth in one area (similar krill densities in adjacent cells) and sharp elsewhere ... in the absence of observed data, 52 data points were removed at random from the raw data prior to one analysis ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 91–100 : Author(s): Wafy, M.H., A.S. Brierley, S.F. Gull and J.L. Watkins
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Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
whale pods were generally small (2–8 animals), while solitary animals and larger pods (>15 animals ... , although smaller groups (2–3 animals) were also relatively common. Interactions with killer whales were ... . Killer whale pods were generally small (2–8 animals), while solitary animals and larger pods (> ... ;15 animals) occurred less frequently. Sperm whales were most often solitary when interacting ... the hauling site. Observers reported that when vessels steamed away for between 20 and 30 n miles, killer ... of killer whale occurrence between two adjacent shallow water areas, one of which had AHDs installed ... -caught fi sh, incorporating a shift away from their natural diet, and the possibility that they may ... the presence of either one of the cetaceans, or both, in the vicinity of vessels during hauling had ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Author(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins