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Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
calculations. Assessments of krill consumption are based on calculations made for individual fish species ... calculated for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption was ... Paper Title: Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division ... krill consumption (Euphausia superba) are based on data obtained from the Atlantic sector which have ... this amount fish consumed 30 to 32 million tonnes. For the most part these figures are based on data ... . Assessments of krill consumption are based on calculations made for individual fish species taking into ... for a depth range of 100 to 500 metres in waters between 30 and 80°B. Krill consumption was estimated ... Kosmonavtov Sea (area 8 x 104 km2) was determined by averaging trawl-acoustic data for the three years from ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Autor(es): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk
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Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
Paper Title: Observations on haul-out patterns and trends in the breeding populations of southern ... de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main objectives ... (van Aarde, 1980). In this paper we present information on the last seven years in two breeding ... of r between these two years is 0.05, similar to the one estimated for this population by McCann ... Convergence. Most of the breeding places are located on islands, except for the herd found on the coast of ... two different places. One of them was located at 25 de Mayo I. (King George) (1980-1986 except for ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Autor(es): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
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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
Paper Title: Observations of fishing operations on a krill trawler and distributional behaviour ... operations were observed on board a commercial vessel and the actual operation described in detail. ‘Fish ... a good index to measure abundance of a concentration. Comparison of such an index across time and ... actual operation and on the distributional behaviour of krill necessary for the interpretation of CPUEs ... their densities were too low for being detected by sonar, fish-finder was the only method on which to ... for the Past Four Years Around area H2, tnere have been good yielding areas for the past four ... . Detailed information on large spatial scale from research vessels is also required for estimating ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 335-368 : Autor(es): Ichii, T.
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The effects of monitoring procedures on Adélie penguins
Paper Title: The effects of monitoring procedures on Adélie penguins Abstract / Description: The ... effects of flipper bands, implanted tags, gastric lavage and external instrument attachment on the ... loss. There was a slight reduction in return rates of birds banded for more than one season, but no ... incubation period resulted in increased foraging trip durations and reduced breeding success. Attachment for ... slightly lower return rate (64%) for non-recaptured birds banded for two years compared with the range of ... carrying a band for one or more years, and on one occasion recaptured a bird with a wide open band, the ... for two to three years. Although our use of stainless steel bands as compared to the aluminium bands ... returned to the colony as two-year-olds (1993/94 summer). Ainley et al. (1983) reported that 30% of all ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Autor(es): Clarke, J. and K. Kerry
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
, with some evidence for an ontogenetic migration from east to west as they grow. From the fisheries data ... Paper Title: Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on ... relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf (defined here as the ... continental shelf out to the edge of the shelf break at about 600–800 m depth). The focus is on D. mawsoni ... for all years up to, and includ- ing, the 2007/08 fishing year. The observer data used in this report ... 88.2 for all years up to, and including, the 2007/08 fishing year. Data error checking and grooming ... caught in each of the three grounds, for years where more than 10 sets were completed, is shown by year ... between years on catch per 24-hour set, so the use of a single year to illustrate trends is of limited ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Autor(es): Hanchet, S.M., S. Mormede and A. Dunn
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
Bayesian model. For both krill length and by-catch fish number, vessel sample size shows marked effects on ... fishery based on scientific observer data Abstract / Description: To estimate the optimal relative sample ... size of scientific observer data collected on Antarctic krill commercial fishing vessels, the ... and haul) based on a state–space model, separating biological process error in the population dynamics ... . However, extending the time on board leads to an increased financial cost for sci- entific observer ... ) have an on-board scientific observer on all vessels on at least one cruise each year, and (iii ... th (m m ) 60 50 40 30 20 (a) Adult size in Subarea 48.1 Overall trend Year E st im at ... Year E st im at ed m ea n le ng th (m m ) 60 50 40 30 20 (c) Adult size in Subarea ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Autor(es): Okuda, T. and M. Kiyota
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On the intensity of sampling krill trawl catches
Paper Title: On the intensity of sampling krill trawl catches Abstract / Description: This paper ... uses actual krill length-frequency data in an attempt to address the problem of the determination of ... . The possible effect of two other factors (within-trawl variability and sample decomposition) which may ... efficiency of measurement, it is proposed that length measurements made on commercial krill catches should be ... conjunction with the need to collect information on maturity stages; • for most purposes a minimum sample ... variance was calculated from the combined error mean squares for length at the two islands derived by the ... most suited for the detection of a 2 mm difference in mean length between the two areas. A similar ... length are analyzed (see Appendix 1 (B) for details of analytical procedures) for the two areas ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 29–48 : Autor(es): Miller, D.G.M.
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Histological study on the ovarian development of mackerel icefish (Champsocephalus gunnari) from the South Georgia Islands
Paper Title: Histological study on the ovarian development of mackerel icefish (Champsocephalus ... on ovarian development in Champsocephalus gunnari caught by the RV Dr Eduardo L. Holmberg in the ... identified, and these are similar to those described for other species. A gonad maturation scale for studies ... described macroscopically for various species of Channichthyidae. Stage six includes ovaries undergoing ... the specimens ranged from two to five years, estimated from the age/length key presented in Barrera ... staff on board the RV Dr Eduardo L. Holnzberg/l994 for the REFERENCES Allen, T.C. 1993 ... histological analysis was carried out on ovarian development in Charnpsocephalus gunnari caught by the RV Dr ... oocyte development were identified, and these are similar to those described for other species. A gonad ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 35–49 : Autor(es): Macchi, G.J. and E.R. Barrera-Oro
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A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
important first steps for improving ecosystem models. This review focuses on seals that breed in ice ... Paper Title: A review of data on abundance, trends in abundance, habitat use and diet of ice ... ; leopard seal, Hydrurga leptonyx; and Weddell seal, Leptonychotes weddellii). Data on populations ... steps for improving ecosystem models. This review focuses on seals that breed in ice habitats of the ... . Recently the Scientific Committees of two Commissions responsible for managing biota in the Southern ... were then summed to derive an estimated total population size for each species in each region (Table ... ), south Indian Ocean (20°E–90°E) and Weddell Sea (20°E–60°W)). The haul-out model developed for ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Autor(es): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
fishery Abstract / Description: An experiment was conducted on autoline and Spanish-system longline ... Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... based on knowledge of line sink rates and albatross diving abilities. Sink rates of lines deployed into ... . Sink rates to 4 m depth were greatest with 35 m (0.44 m/s) and 50 m (0.33 m/s) between weights. For ... seabirds killed (SC-CAMLR, 1997). Two methods are adopted in the CCAMLR Convention Area for the ... and managed on board, and in operational procedures that affect seabirds. For instance, autoline ... conducted on autoline and Spanish-system fishing trawler converted for toothfish longlining. The vessels ... lines) fishing line on the other, with branch lines straddling the area in between. A set for the In ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Autor(es): Robertson, G.G