Floodplains are morphologically highly heterogeneous environments with dynamically in- and decreasing water levels and flows. Strong environmental filtering through floodplain inundation creates favorable conditions for highly specialized organisms leading to high biodiversity and conservation value of floodplains. With hyd1d and hydflood we provide two R packages for simplified hydrologic modelling in two large central European floodplains – along River Rhine and River Elbe in Germany. We applied the R function hydflood::flood3 on both active floodplains covering the year 2023. The datasets consists of 40 tiles along River Rhine and 49 tiles along River Elbe, resulting in a total of 89 individual raster datasets stored in GeoTiff file format. All raster have a spatial resolution of 1 m and are stored in the coordinate reference systems ETRS 1989 UTM Zone 32 N (EPSG: 25832) for River Rhine and ETRS 1989 UTM Zone 33 N (EPSG: 25833) for River Elbe.
Floodplains are morphologically highly heterogeneous environments with dynamically in- and decreasing water levels and flows. Strong environmental filtering through floodplain inundation creates favorable conditions for highly specialized organisms leading to high biodiversity and conservation value of floodplains. With hyd1d and hydflood we provide two R packages for simplified hydrologic modelling in two large central European floodplains – along River Rhine and River Elbe in Germany. We applied the R function hydflood::flood3 on both active floodplains covering the year 2022. The datasets consists of 40 tiles along River Rhine and 49 tiles along River Elbe, resulting in a total of 89 individual raster datasets stored in GeoTiff file format. All raster have a spatial resolution of 1 m and are stored in the coordinate reference systems ETRS 1989 UTM Zone 32 N (EPSG: 25832) for River Rhine and ETRS 1989 UTM Zone 33 N (EPSG: 25833) for River Elbe.
This digital elevation model (DEM) describes the topography of the active floodplain of the freeflowing parts of River Rhine between the weir Iffezheim and the German-Dutch border near Kleve with 1 m spatial resolution in coordinate reference system "ETRS 1989 UTM Zone 32 N" and 0.01 m resolution in the German height reference system "Deutsches Haupthöhennetz 1992 (DHHN92)".
The dataset was generated in four parts through aerial laser scanning (ALS) for terrestrial parts of the floodplain and echo sounding for aquatic parts of the central water course by the local waterway and navigation authorities (WSV) between 2003 and 2010. Parts not covered by any of the two data collection methods were filled through linear interpolation. A comparison between DEM and reference points confirmed a high accuracy with a mean deviation of elevations of ± 5 cm. Depending on the data source 95% of all checked points show a vertical deviation of less than 15 cm to 50 cm.
Since the dataset has a large volume it was split into 40 tiles.
Das Einfuehren und Einsetzen landesfremder Arten, Rassen und Varietaeten ist nach dem BGF verboten bzw. beduerfen einer Bewilligung. Trotzdem kommen in unseren Gewaessern fremde Arten vor. Meist sind sie durch menschliche Aktivitaeten direkt in unsere Gewaesser gelangt, zudem muss aufgrund von Nachrichten aus Deutschland angenommen werden, dass weitere Arten den Rhein hoch wandern werden. Dabei handelt es sich um bei uns verschwundene Arten (z.B. Lachs, Meerneunauge), aber auch um fremde Arten (z.B. Zaehrte, Zobel, Weissflossengruendling). Projektziele: Die Liste der in der Schweiz vorkommenden Neozoen soll aktualisiert und durch jene Namen ergaenzt werden, von denen eine moegliche Einwanderung erwartet wird (v.a. im Rhein). Folgende Fragen sollten geklaert werden: Wo kommen welche Neozoen vor? Werden die neuen Arten ueberhaupt erkannt (z.B. Weissflossengruendling), welches sind die Bestimmungsmerkmale (Fotos)? Kann etwas ueber die Ausbreitungsgeschwindigkeit/das Ausbreitungspotential gesagt werden? Sind Auswirkungen auf die anwesende Fischfauna bekannt oder muessen solche erwartet werden?