Resultados de la búsqueda
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Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
Abstract: This paper outlines the theory and procedures for calibrating an echo integration ... acoustic system with a standard sphere. It presents the results of an extensive calibration of a Simrad ... biomass estimation. Author(s): D.A. Demer and R.P. Hewitt (USA) Title: Calibration of an acoustic echo ...
Meeting Document : WG-KRILL-92/17 : Autor(es): D.A. Demer and R.P. Hewitt (USA)
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An assessment of the conservation status of albatrosses
regarding population trend and status provides an inadequate basis for classification and these are assessed ... taxonomic revisions of albatrosses and the new IUCN criteria for identification of threatened taxa. The ... , the Black-browed (Near Threatened) and Laysan Albatrosses are classified as Lower Risk. For two ... as Data Deficient. Author(s): Croxall, J.P., Gales, R. Title: An assessment of the conservation ...
Meeting Document : WG-FSA-97/59 : Autor(es): Croxall, J.P., Gales, R.
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Estimation of krill biomass from an acoustic survey carried out in 1986, during a study of predator–prey interactions around the western end of South Georgia
Abstract: An acoustic survey, designed to study the distribution of shore-breeding, marine ... survey area as part of an interannual study. The radiating transect design gave increased sampling ... for krill. Author(s): C. Goss and S. Grant (United Kingdom) Title: Estimation of krill biomass from ... an acoustic survey carried out in 1986, during a study of predator–prey interactions around the ...
Meeting Document : WG-EMM-99/17 : Autor(es): C. Goss and S. Grant (United Kingdom)
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A simulation study of krill fishing by an individual JAPANESE trawler
Abstract: A model is set up for the operation (which includes both searching and fishing) of a ... Japanese krill trawler over a half-month period. It is based on an underlying krill distribution model ... the operation is compared with (and partially tuned to) statistics for a sample of data from the ... candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ...
Meeting Document : SC-CAMLR-VII/BG/37 : Autor(es): D.S. Butterworth (Invited Expert)
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Measurements of fish school velocities with an acoustic Doppler current profiler
Abstract: Horizontal and vertical velocities of fish schools were measured using an acoustic ... results suggests that the ADCP can be a useful tool for observing fish behavior in certain situations ... velocity components from each beam and correcting for platform motion. Author(s): Demer, D.A. Title ... : Measurements of fish school velocities with an acoustic Doppler current profiler Approval: Approved ...
Meeting Document : WG-EMM-96/41 : Autor(es): Demer, D.A.
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Effective, cost-limited and easy-to-implement photo-identification from fishing vessels: an alternative to no effort at all
individuals through natural markings visible on their body and is central for research on cetaceans. Best gear ... trials of a cost-limited bridge camera as an alternative to no photo-identification. This bridge ... -identification from fishing vessels: an alternative to no effort at all Microsoft Word File: fsa-2019-50.docx ... responsibility for releasing documents: France ...
Meeting Document : WG-FSA-2019/50 : Autor(es): N. Gasco, P. Tixier and C. Lemarchand
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Development of an algorithm designed to assess observer data quality and performance
arising from the CCAMLR SISO, an algorithm was designed to automatically import and check data entered by ... , as well as value inconsistencies through a limited set of logical tests. For each logbook inspected ... weight of toothfish, and, an overall data entry quality score, are automatically generated. The first ... invalidates automated data processing routines. Author(s): Secretariat Title: Development of an algorithm ...
Meeting Document : WG-SAM-13/40 : Autor(es): Secretariat
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Description of an AD Model Builder implementation of the exact time of release and recapture stock assessment model of Tuck et al. (2003)
Abstract: Tuck et al. (2003) describe an exact time of release and recapture stock assessment ... , 3.127). The maximum likelihood estimation for this model has more recently been implemented in the AD ... derived outputs for this implementation. Author(s): S.G. Candy, A.J. Constable and D. Erceg (Australia ... ) Title: Description of an AD Model Builder implementation of the exact time of release and recapture ...
Meeting Document : WG-FSA-04/75 : Autor(es): S.G. Candy, A.J. Constable and D. Erceg (Australia)
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A multivariate approach to examining patterns in research fishing activities using the SSRU 88.2A–B North survey as an example
et al. (2016), using fishing activities in the northern Ross Sea region as an example. We investigate ... times to haul lines once standardised for other factors, but that the activities carried out as part of ... the SSRU 88.2A–B North survey were within the expected range for the vessels involved. Additional ... using the SSRU 88.2A–B North survey as an example Microsoft Word File: fsa-16-46.docx Approval ...
Meeting Document : WG-FSA-16/46 : Autor(es): S. Mormede, A. Dunn, S.J. Parker, T. Earl, C. Darby, M. Söffker and O.R. Godø
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Krill Spill: An opportunistic approach to collecting penguin diet and krill length data
of the methods. A pilot study was conducted at Esperanza Station for the 2017/18 season to consider ... opportunistic data collection methods as an alternate approach. Data on diet composition and krill length were ... Title: Krill Spill: An opportunistic approach to collecting penguin diet and krill length data ... Delegation responsibility for releasing documents: CCAMLR Secretariat ...
Meeting Document : WG-EMM-18/45 : Autor(es): E. Grilly, M. Santos, K. Reid and A. Silvestro