Table
5.16. Effects of hydraulic clam dredges on mixed substrate habitat: summary
of published studies. (S = statistically
significant; citations in bold print are peer-reviewed publications.)
Reference
Location
Depth
Sediment
Effects
Recovery
Approach
Murawski and Serchuk 1989
Mid-Atlantic Bight,
USA
Not given
Sand, mud, and coarse gravel
Trench
cut; temporary increase in turbidity, disruption of benthic organisms in
dredge path; attraction of predators.
Trenches
filled quickly in coarse gravel, but took several days in fine sediments.
Submersible
observations following hydraulic cage dredge tows.