Results 211 to 220 of about 32,183 (242)
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A new midwater trawl for sampling discrete depth horizons
Journal of the Marine Biological Association of the United Kingdom, 1969A new midwater trawl based on that designed by Tucker (1951) is described with details of opening and closing equipment, acoustic release gear and depth telemetering pinger. An account is given of the method used in operating the xtrawl from R.R.S. ‘Discovery’.
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Depth control of a midwater trawl gear using fuzzy logic
Fisheries Research, 1995Abstract This paper describes the model of a simplified trawl system and the design of a control system that uses a fuzzy algorithm in controlling the depth of a midwater trawl net. The practicality of the control system was examined using computer simulation.
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Stepped-Oblique Midwater Trawling as an Assessment Technique for Rainbow Smelt
North American Journal of Fisheries Management, 1991Abstract Discrete-depth midwater trawling for rainbow smelt Osmerus mordax at night in Lake Champlain revealed a delayed vertical migration of smaller fish and size partitioning vertically within the water column. These behavioral observations led to the development and evaluation of a nighttime stepped-oblique midwater trawling technique.
Richard A. Kirn, George W. Labar
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Behaviour of Herring Schools in Response to a Midwater Trawl
Journal of the Fisheries Research Board of Canada, 1968not available
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A Simple Surface-Midwater Trawl
The Progressive Fish-Culturist, 1968Charles R. Gasaway, Victor W. Lambou
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Biophysical Economics and Sustainability
Michael Panduleni Kanghono +2 more
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Michael Panduleni Kanghono +2 more
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Diving Plane for a Tucker Midwater Trawl
The Progressive Fish-Culturist, 1983openaire +1 more source