Search results
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Simulation experiments and CCAMLR yield estimates using CASAL
were fitted with an expected percent root mean squared error (%RMSE) of less than 20%. The inclusion ... with an expected percent root mean squared error (%RMSE) of less than 20%. The inclusion of additional data (i.e ...
Meeting Document : WG-FSA-SAM-05/9 : Author(s): A. Dunn (New Zealand)
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An iterative model to construct an age-length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
and Heisey, 1987). We found a catch age distribution pattern wich is not significatly different from the one ... , 1987). We found a catch age distribution pattern wich is not significatly different from the one ...
Meeting Document : WG-FSA-92/23 Rev. 1 : Author(s): H. Robotham V. and Z. Young U. (Chile)
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Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region
of the gonads takes one year or more whereas in others gonad maturation is completed within one season. Length ... at sexual maturity and length at first spawning in C. gunnari is one year later on the southerly grounds ... of the gonads takes one year or more whereas in others gonad maturation is completed within one season. Length ... at sexual maturity and length at first spawning in C. gunnari is one year later on the southerly grounds ...
Meeting Document : WG-FSA-99/16 : Author(s): K.-H. Kock (Germany), C. Jones (USA) and S. Wilhelms (Germany)
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 2006/2007
years in which no fisheries related debris was observed, one nylon fishing line and one snood were found ... Abstract: During the seventeenth year of standardised beach surveys of man-made debris at Bird ... Island, South Georgia (covering the period 1 October 2006 to 30 September 2007) a total of 365 items were ... previous years: 73% during summer (265 items) and 27% during winter (100 items). After three consecutive ...
Meeting Document : WG-FSA-08/24 : Author(s): F. Le Bouard (UK)
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A REVIEW OF THE METHODS USED TO RELEASE SKATES (RAJIIDS), WITH OR WITHOUT TAGS, IN ANTARCTIC EXPLORATORY FISHERIES
the last two fishing seasons in preparation for the ‘Year of the Skate’ prior to a final decision on skate ... with additional information collected over the last two fishing seasons in preparation for the ‘Year ... Zealand autoline vessels. It describes the current Method 2 systems in use for two New Zealand vessels ... release protocols. A proposal is made for a comparative experiment using two tag types to inform a final ...
Meeting Document : WG-FSA-08/30 : Author(s): J.M. Fenaughty (New Zealand)
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PROPOSED AMENDMENTS TO CONSERVATION MEASURE 51-01 (2008) PRECAUTIONARY CATCH LIMITATIONS ON EUPHAUSIA SUPERBA IN STATISTICAL SUBAREAS 48.1, 48.2, 48.3 AND 48.4
advice on SSMU catch limit allocation subdivision, that has been mentioned at the WG on Ecosystem ... catch limit allocation subdivision, that has been mentioned at the WG on Ecosystem Monitoring ...
Meeting Document : CCAMLR-XXVIII/48 : Author(s): Delegation of Ukraine
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New data on spawning, hatching and growth of the Kerguelen Islands Champsocephalus gunnari shelf stock
programme allows to identify each year, both from the ichthyoplanktonic surveys and bottom trawlings ... , an annual cohort. Strong differences in abundance of larvae are observed yearly. One cohort seems dominant ... in the samples along the study. It would explain the previouly observed three years cycle. Spawners have been ... to identify each year, both from the ichthyoplanktonic surveys and bottom trawlings, an annual cohort. Strong ...
Meeting Document : WG-FSA-94/9 Rev. 1 : Author(s): G. Duhamel (France)
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Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history
in longitudinal sections of teeth. Mean age at death was 7∙69 ± 0∙07 years and this showed a small but significant ... an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years) and increased ... mature early also died early. Tooth growth layers deposited in each calendar year were compared ... was deposited. There was significant variation in the depth of tooth growth layers deposited in different years ...
Meeting Document : WG-CEMP-93/11 : Author(s): I.L. Boyd and J.P. Roberts (United Kingdom)
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Linking population trends of Antarctic shag (Phalacrocorax bransfieldensis) and fish at Nelson Island, South Shetland Islands (Antarctica)
in the number of breeding pairs of Antarctic shag Phalacrocorax bransfieldensis in two colonies on Nelson ... the 1990s up to the mid 2000s over an overall monitoring period of over two decades. It addresses ... influenced by the concomitant decrease in abundance of two of their main prey, the nototheniids Notothenia ... in the number of breeding pairs of Antarctic shag Phalacrocorax bransfieldensis in two colonies ...
Meeting Document : WG-EMM-16/P09 : Author(s): R. Casaux and E. Barrera-Oro
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Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements
in numerous areas. Acoustic surveys have been conducted regularly in some areas for nearly 20 years ... of krill abundance has been subject to considerable research over the last 20 years (Greene et al., 1998 ... tonnes per year (a factor of 20) to 100-500 million tonnes per year (a factor of 5). An earlier ... BOSPOCLUHM npoMbIcnoM KpHJlR HaAO 6 y ~ e ~ YYHTbIBaTb Ce30HHbIe M JIOKaJIbHbIe IIOCJIeACTBIUI ... Paper Title: Estimates of circumpolar abundance of Antarctic krill based on recent acoustic ... historical information on the overall range of krill. The biomass estimates fall between 60 and 155 million ... estimates and others can be explained by a number of factors such as: an underestimation of the range or the ... of the demand for krill by predators. Even if these low krill biomass estimates are correct, regional ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Author(s): Nicol, S., A.J. Constable and T. Pauly