Ontologia

Ruisseau

Varreler Graft

Crosses 4 administrative regions : Bremen, Delmenhorst, Diepholz, Oldenburg

ruisseau

Total length

2km

Max discharge

1,9m³/s

Max Strahler

3

Segments matched

1

River geography4 admin regions · 0 communes

Parent watershed

hybas-20803477701421 km²

4 administrative regions crossed (GADM L2)

  • Diepholz
    Niedersachsen · Germany
    15.3 km
    in this dpt
  • Oldenburg
    Niedersachsen · Germany
    0.8 km
    in this dpt
  • Delmenhorst
    Niedersachsen · Germany
    0.7 km
    in this dpt
  • Bremen
    Bremen · Germany
    0.0 km
    in this dpt

11 intersecting protected areas

2 more protected areas

1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.

Species present

752 distinct species · 1 934 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 37 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Varreler Graft : 21 espèces reliées par 122 interactions GloBI sur 6 types (connectance 18.3%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
37
Interactions affichées
122
Connectance
0.183
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)

Total length

2km

Max discharge

1,9m³/s

Max Strahler

3

Segments matched

1

HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.