chapter  5
10 Pages

The Hyporheic Environment: Continuity of the Substrate

WithEugene Angelier, James Munnick

The hyporheic environment is made up of the interstices of alluvia deposited on the river bed. It is a more stable environment than the superficial horizon of the substrate: the deep layers are reshaped only during exceptional floods. It constitutes an interface or ecotone—a zone of contact between the surface and ground waters, between benthic organisms and those of the water table (Fig. 18). The diversified and heterogeneous population reflects this double origin. The hyporheic environment and its water inflow from the river and from ground waters