Search results
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A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
Assessment and Management Group Department of Mathematics and Applied Mathematics University of Cape Town ... further details of the survey and the biomass estimation procedure used may be found in Leslie ... reviewed briefly. It is characterised by very large illegal catches and a sharply declining longline catch ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Author(s): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller
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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)
School of Biological, Earth and Environmental Sciences The University of New South Wales Sydney ... below). Species reviews Crabeater seals Most satellite telemetry studies have found that crabeater ... pack on the other side. Wall et al. (2007) found that association with pack-ice was not complete ... , shipboard surveys have found that breeding crabeater seals in East Antarctica were most likely ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Author(s): 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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A hybrid approach to acoustic classification and length estimation of krill
environmental and biological conditions, such as those found in the Ross Sea. Opportunities to carry out net ... school- ing organisms, such as euphausiids, this criterion is seldom met. Therefore, in the Ross Sea ... with the standard method in the estimation of biomass of E. superba and E. crystallorophias found in the Ross Sea ... aggregations found during the 1997/98 and 2000 surveys were identifi ed correctly by the method ... considered. A euphausiid aggregation is represented by a three-dimensional probabilistic vector whose ... are derived by integrating the individual decisions. The size structure of the classified aggregation ... is derived from a fluid-sphere model. The effectiveness of the method is demonstrated by comparing ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Author(s): Azzali, M., I. Leonori and G. Lanciani
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Seasonal and inter-annual variability in the distribution of Electrona carlsbergi in the southern Polar Front area (the area to the north of South Georgia is used as an example)
mesopelagic fish from the family Myctophidae are found most frequently and regularly. Seasonal and inter ... and distribution of zooplankton. E. carlsbergi was found over the entire study area. The largest concentrations ... of the species, however, were found mainly along edges of the frontal zone where such fundamental environmental ... Frontal Zone where mesopelagic fish from the family Myctophidae are found most frequently and regularly ... the family Myctophidae are found most frequently and regularly. Seasonal and interannual variability ... of zooplankton. E. carlsbergi was found over the entire study area. The largest concentrations of the species ... , however, were found mainly along edges of the frontal zone where such fundamental environmental ... are characterised by circumpolar distribution. The most abundant myctophid species are found in the area ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 337–367 : Author(s): Kozlov, A.N., K.V. Shust and A.V. Zemsky
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Fish stock assessment survey in Subarea 48.3
Echosignal Processor for fish quantification and was continually monitored for the presence of schools ... and their total weight measured. The number of stations at which individual species were found and the total ... , being found at nearly all stations. N. rossii, although present at most stations down to 250 ... that indicated the presence of large schools of fish. In addition, most trawling sites were examined prior ... decline by comparison with results from the 1989/90 season. Other species do not show a similar dramatic ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Author(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski
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Directed research. Antarctic Marine Living Resources (AMLR). A program development plan
, implementing the CCAMLR for the United States. Congress found that directed and basic research programs ... Administration (NOAA) will develop and implement the AMLR Program, which emphasizes directed research undertaken ... for the United States. Congress found that directed and basic research programs concerning the marine living ... , the National Marine Fisheries Service (NMFS) of the National Oceanic and Atmospheric Administration (NOAA ... . Congress found that directed and basic research programs concerning the marine living resources ... , the National Marine Fisheries Service (NMFS) of the National Oceanic and Atmospheric Administration (NOAA ... (NMFS) de 1 'Administration Nationale Oceanique et Atmospherique (NOM) developpera et mettra en vigueur ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Author(s): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
of krill aggregation patterns and schooling behaviour is very important, not only in studies of krill ... were obtained using the Schools Detection Module of SonarData’s Echo- view software. Additional ... elds. The fi rst two types were found all over survey area and were dominant in low-density strata ... ). As was found in this study, a large proportion of the biomass was contained in a relatively small percentage ... this paper. Results of comparisons of swarm parameters by area and season are given. The effect of ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Author(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky
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Analysis and modelling of the Soviet Southern Ocean krill fleet
distributions in Part II. General considerations about the theory of abundance indices for pelagic, schooling ... distributions in Part II. General considerations about the theory of abundance indices for pelagic, schooling ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 127–235 : Author(s): Mangel, M.
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Estimates of circumpolar abundance of Antarctic krill based on recent acoustic density measurements
, 1962; Mackintosh, 1973) support modern ideas of where krill are to be found and where the major ... of which was found in the 'zone of regular occurrence of dense concentrations'. Two factors could ... that E. superba is largely found in the shelf/slope front area except in the Weddell-Scotia Arc (Table ... of significant concentrations of krill being regularly found in areas that were not identified in the Discovery ... 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 ... target strength which has effectively underestimated the krill biomass by a factor of three, so the new ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 87–99 : Author(s): Nicol, S., A.J. Constable and T. Pauly
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Spatial distribution of management measures, Antarctic krill catch and Southern Ocean bioregions: implications for conservation planning
been fished, and this fishing is concentrated in three of the seven bioregions found in the open area ... has ever been fished, and this fishing is concentrated in three of the seven bioregions found ... in three of the seven bioregions found in the open area. Information on the distribution of catches ... are internationally recognised, including by the UN Food and Agriculture Organi- sation (FAO). Smaller management ... is found in Subarea 48.1, which also con- tains proportionately more of the Antarctic shelves bioregion ... than zero. Two of the seven bioregions found in this area have never been fished. Although the total ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 1–19 : Author(s): Grant, S.M., S.L. Hill and P.T. Fretwell