Rivière· 28 segments
Regen
Crosses 3 administrative regions : Cham, Regensburg, Schwandorf
Total length
116km
Max discharge
31,3m³/s
Max Strahler
4
Segments matched
28
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- ChamBayern · Germany57.2 kmin this dpt
- RegensburgBayern · Germany21.7 kmin this dpt
- SchwandorfBayern · Germany17.7 kmin this dpt
11 intersecting protected areas
Oberer Bayerischer Wald
IUCN VLandscape Protection Area
Landscape Protection Area
Oberer Bayerischer Wald
IUCN VLandscape Protection Area
Chamb, Regentalaue und Regen zwischen Roding und Donaumündung
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Regentalaue und Chambtal mit Rötelseeweihergebiet
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Nature Reserve
Regentalhänge bei Hirschling
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Standortübungsplatz Roding
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Leonberger Holz
IUCN VLandscape Protection Area
2 more protected areassorted by area
Nature Reserve
NSG 'Regentalhänge zwischen Kirchenrohrbach und Zenzing'
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1 page = 1 named river (aggregation of 28 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
901 distinct species · 8 880 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Regen : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 4 types (connectance 8.8%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
116km
Max discharge
31,3m³/s
Max Strahler
4
Segments matched
28
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.