Limitations and Concerns
While little study has been made of their impacts, a few negative
impacts of the use of sediment covers have been reported to date.
(1982, 1984) found that macroinvertebrates were eliminated by Aquascreen in
Boston
_
Cox Hollow Lake, Wisconsin, apparently due to low dissolved oxygen.
however, reported that plant death following Aquascreen
and
application was slow enough that they believed deoxygenation would be a minor
Additional studies are needed.
problem.
Applications of sediment covers to eliminate rooted plants at swimming
beaches, while completely
meeting this objective, have produced
complaints by swimmers about walking on the screens.
Summary
Table 16 is a summary of the properties, costs, and effectiveness of
Table 17 is a summary
seven materials that have been used as sediment covers.
of this reservoir management technique.
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