Rivière
Wümme - Nordarm
Crosses 3 administrative regions : Bremen, Osterholz, Verden
Total length
17km
Max discharge
16,4m³/s
Max Strahler
4
Segments matched
1
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
17 intersecting protected areas
Wümmeniederung
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Untere Wümmeniederung, untere Hammeniederung mit Teufelsmoor
IUCN Not ReportedSite of Community Importance (Habitats Directive)
Blockland
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Landscape Protection Area
Wümmewiesen bei Fischerhude
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Fischerhuder Wümmeniederung
IUCN IVNature Reserve
Landscape Protection Area
Borgfelder Wümmewiesen
IUCN IVNature Reserve
Borgfelder Wümmewiesen
IUCN Not ReportedSpecial Protection Area (Birds Directive)
8 more protected areassorted by area
Landscape Protection Area
Untere Wümme
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Landscape Protection Area
Oberneulander Wümmeniederung
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Untere Wümme
IUCN IVNature Reserve
Nature Reserve
Untere Wörpe
IUCN IVNature Reserve
Butendieker Gehölz
IUCN VLandscape Protection Area
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
1 563 distinct species · 14 651 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Wümme - Nordarm : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 67 interactions GloBI sur 5 types (connectance 10.6%, 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
17km
Max discharge
16,4m³/s
Max Strahler
4
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.