Experimental Study Of "periphyton-flow"
Interactions
Author(s)
R. Godillot, B. Caussade & T. Ameziane
Abstract
Periphytic communities have been for a long time considered as useful indicators
of water quality in rivers and lakes. This fact is due to their fixing, rapid growth
and ability to easily integrate in a very short time the physical and chemical
changes in the environment. However, recent studies on the mutual influences of
periphyton-flow have produced conflicting conclusions which underline the
particular complexity of these interactions. An experimental flume was built to
show, in hydrodynamically controlled conditions, that the near-bed regime (which
depends on water discharge, the nature and form of the substrate, the presence or
absence of blowing, ...) can interact with the development of the periphyton.
Several experiments were performed with different velocities (between 8 a
Keywords
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