Fleuve
Alte Weser
⚠ Partial coverage : only 1 named segment matched so far. The real fleuve extends much further (Strahler order 7 indicates a major river). Cross-source ingest in progress — values below reflect only the matched segment.
Crosses 3 administrative regions : Bremen, Osterholz, Wesermarsch
Max discharge
410,4m³/s
Max Strahler
7
Segments matched
1
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- BremenBremen · Germany2.7 kmin this dpt
- OsterholzNiedersachsen · Germany1.4 kmin this dpt
- WesermarschNiedersachsen · Germany0.5 kmin this dpt
11 intersecting protected areas
Tideweser
IUCN IVNature Reserve
Unterweser
IUCN Not ReportedSpecial Protection Area (Birds Directive)
Nebenarme der Weser mit Strohauser Plate und Juliusplate
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Bremen 1968 39. Änderung
IUCN VLandscape Protection Area
Unterwesermarsch
IUCN VLandscape Protection Area
Unterwesermarsch
IUCN IVNature Reserve
Mittlere und Untere Hunte (mit Barneführer Holz und Schreensmoor)
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Teichfledermaus-Gewässer im Raum Bremerhaven/Bremen
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
Weser zwischen Ochtummündung und Rekum
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
2 more protected areassorted by area
Untere Hunte
IUCN VLandscape Protection Area
Juliusplate
IUCN IVNature Reserve
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
1 529 distinct species · 6 163 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Alte Weser : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 79 interactions GloBI sur 5 types (connectance 10.7%, filtre Serrano α=0.2). 10 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)
Matched len.
8,9km
Max discharge
410,4m³/s
Max Strahler
7
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.