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FAO FISHERIES TECHNICAL PAPER 472 |
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Impacts of trawling and scallop by |
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Cover photograph:
Bottom trawl equipped with
rockhopper gear. Courtesy of J.W. Valdermarsen, Institute of Marine Research,
Bergen, Norway.
The designations employed and the presentation of material in this information product do not imply the expression of any opinion whatsoever on the part of the Food and Agriculture Organization of the United Nations concerning the legal or delopment status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries.
ISBN 92-5-105325-1
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© FAO 2005
EXPERIMENTAL DESIGN - TWO APPROACHES
CONTROL SITES
INSTRUMENTATION FOR BOTTOM CHARACTERIZATION
SAMPLING TOOLS
THE CATCHING PRINCIPLES OF TRAWLS AND DREDGES
PHYSICAL IMPACTS OF OTTER TRAWLS
PHYSICAL IMPACTS OF BEAM TRAWLS AND DREDGES
OTTER TRAWLING ON SOFT BOTTOM HABITATS
OTTER TRAWLING ON HARD BOTTOM HABITATS WITH ERECT STRUCTURES
BEAM TRAWLING
SCALLOP DREDGING