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  1. Improvements to the multiple-frequency method for in situ target strength measurements

    the range resolution of one or more of the frequencies. These improvements are demonstrated through ... of one or more of the frequencies. These improvements are demonstrated through controlled test tank ... synchronized signals from two or more adjacent split-beam transducers of different frequencies which ... transducer. Tolerances for matching target positions at two or more frequencies were determined to be ±0.5 ...

    Meeting Document : WG-EMM-99/38 : Author(s): D.A. Demer (USA) and M.A. Soule (South Africa)

  2. Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, in late summer of years 1994–97, Dr E. Holmberg surveys

    in the area of investigation didn't show a consistent pattern from year to year. Likewise, in the four ... in late summer of years 1994-97 was analysed using frequency of occurrence (F%) and coefficient " ... the order of importance of these two organisms in the diet was inverted. The consumption of other prey items ... such as mysids and Thysanoessa sp., which are known as important alternative food in years of krill scarcity ...

    Meeting Document : WG-FSA-97/48 : Author(s): Barrera-Oro, E., Marschoff, E., Casaux, R.

  3. Report on fish by-catch during research fishing activities in Division 58.4.4b between 2008 and 2018

    . A large number of skates were caught (up to 1,400 individuals in one year). While most skates were ... . A large number of skates were caught (up to 1,400 individuals in one year). While most skates were ... composition in number and biomass during the period 2008-2018 to investigate the inter-annual variations ... to catch ratio of about 15%, autolines ratio was up to 70% in some years. Hence, bycatch number and biomass ...

    Meeting Document : WG-FSA-2019/53 : Author(s): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier

  4. The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

    to be considered when evaluating patterns that have emerged in Southern Ocean ecosystems in the course of the 20 ... emerged in Southern Ocean ecosystems in the course of the 20th century. As a first step towards ... estimates of C. gunnari existed for 1975/76, one year before large-scale exploitation of the species ... (Bogdanov and Lubimova, 1978; Hopkins and Torres, 1989). Some species, notably the larger ones ... ). This scheme is similar to the one proposed by Eastman (1993) which is largely based on the zoo geographical ... al., 2004). Krill was the sole food item of one individu- al caught in the Indian sector (Solyanik ...

    Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Author(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams

  5. e-cc-xxix-a6.pdf

    ... for frequency to be considered in different ways, for example, one incident of non-compliance by a vessel ... during a fishing trip could be considered a frequency of 1, whereas one trip during which non-compliance ... Members expressed concern over the proposed introduction of a krill notification fee. One Member ... to its work, recorded progress against each one and provided an indication of whether work was in early ... in Vigo from Portugal where it had been tied up for a period of two years and had no fish on board ... noted that two Chinese-flagged vessels, North Ocean and West Ocean, were included on the CP-IUU Vessel ... , to remove the two vessels from the CP-IUU Vessel List. 3.11 China advised SCIC that on 29 ... address the important issue of observers on krill vessels for a number of years. 6.7 SCIC agreed todownload attachment application/pdf attached to:SCIC-10

    Meeting Report : SCIC-10

  6. Further analysis of spatial patterns of benthic invertebrate habitats from fishery bycatch in the Ross Sea region

    collected for two fishing seasons, with 4 728 longline segments observed. Several regions with consistent ... with no evidence of VME taxa. Identifiable sponge and/or gorgonian habitats occurred at a typical scale of 10-30 km ... VME taxa are detected between 60% and 80% of the time when present, and that probability of detection ... High resolution VME taxa bycatch data (at the longline segment level) have been collected for two ...

    Meeting Document : WG-FSA-10/30 : Author(s): S.J. Parker, R.G. Cole and S.M. Hanchet (New Zealand)

  7. Fishery Report 2015: Exploratory fishery for Dissostichus spp. in Division 58.4.1

    116 2 50 0 - 100 <1 q Quarantined data (see paragraph 5). 10 20. If the by-catch of any one ... two (2) scientific observers, one of whom shall be appointed in accordance with the CCAMLR Scheme ... to one Korean and one Spanish flagged vessel using longlines, although Korea was the only Member ... that conducted research fishing during this season. 4. For 2016, a total of five vessels, one each from ...

    Document : Site Section: Publications

  8. Interannual variations of water thermochaline structure on South Georgia Island, South Orkney Islands and Shetland Islands shelves

    between the same. Two year types were revealed in the area of South Orkney Isls. Availability of a warmed ... could be used when analysing krill aggregations&#039; distribution and density for the period of years ... of principal water mass mixing within the area and lack of distinct boundaries between the same. Two year types ... characteristics, T,S diagrams&#039; typification has been realized for hydrological stations carried out ...

    Meeting Document : WG-EMM-00/34 : Author(s): P. Chernyshkov, V. Shnar, O. Berezhinsky and I. Polischuk (Russia)

  9. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

    is the number of animals in age class i, and n is the age of the oldest age class in the stock (de la Mare ... /89. From 1989/90 to 1991/92, almost no age 2+ components were identified. In 1992/93 and 1993/94 ... between environmental factors and krill variability was one of the major issues addressed at CCAMLR's ... to tip of telson) of 50 individuals from one haul per day. Detailed information on the Japanese fishing ... 48.1 (Antarctic Peninsula region) from 1980 to 1996 were calculated based on logbook data from Japanese ... general decrease in krill density in the study area were considered as possible reasons for this. On the ...

    Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Author(s): Kawaguchi, S., T. Ichii and M. Naganobu

  10. Can we use discriminant function analysis to sex penguins prior to calculating an index of a morphometric parameter?

    the sex of individuals, it is only able to correctly sex a certain proportion of birds. Two overlapping ... functions are able to correctly determine the sex of birds with greater than 80% success the difference ... of knowledge about the sex ratio between years makes combining the data a very doubtful procedure and use ... of individuals, it is only able to correctly sex a certain proportion of birds. Two overlapping normal ...

    Meeting Document : WG-CEMP-92/11 : Author(s): D.J. Agnew (Secretariat)

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