Stream Corridors, Alluvia and Molluscs I. The Term Alluvium, Its Definition and Its Status in the Flood Plain Ecosystem

Abstract

The importance of stream corridors and flood deposits for the spreading of molluscs is demonstrated using some examples from the Czech territory. Three types of floodplain debris, which contain shell accumulation, are distinguished: allochtonous debris accumulated by river flow on riversides, autochtonous accumulation in quiet parts of alluvium far from the main flow, and accumulation caused by strong turbulence during flooding.

Keywords

• biocorridor
• biocentrum
• stream corridors