Freshwater mudflats
A freshwater mudflats is the bottom of a tidal river that dries out due to the influence of the tide at low tide .
Similar to the Wadden Sea , freshwater mud flats also show geological and biological zoning . However, the animal and plant species are often different. In the upper zone of the freshwater mudflats, there are mainly reeds and rushes . Freshwater mud flats are among the most active ecosystems in terms of production biology and play a major role in the self-cleaning power of rivers . As a rule, they are very rich in nutrients and animals and are important nurseries for fish as well as resting places for birds. Due to dikes , the number of freshwater mudflats has declined sharply in the last 100 years.
Some larger freshwater mud flats are e.g. B. to be found on the Elbe :
- Ferryman sander Watt near Wedel
- Black ton sand across from Kollmar
- Pagensand
- Mühlenberger Loch near Hamburg-Finkenwerder
- Heuckenlock nature reserve on the north bank of the Süderelbe
- Flood polders Apen flood protection and bird home on the German Fehnroute
gallery
Tide at low tide
Reeds that have fallen dry at low tide