Ontologia

Ruisseau

Gretzenbach

Crosses 3 administrative regions : Gösgen, Olten, Zofingen

ruisseau

Total length

4km

Max discharge

0,3m³/s

Max Strahler

1

Segments matched

1

River geography3 admin regions · 0 communes

Parent watershed

hybas-2080497690120 km²

3 administrative regions crossed (GADM L2)

  • Olten
    Solothurn · Switzerland
    3.6 km
    in this dpt
  • Zofingen
    Aargau · Switzerland
    0.5 km
    in this dpt
  • Gösgen
    Solothurn · Switzerland
    0.0 km
    in this dpt

3 intersecting protected areas

  • Grossmoos

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

  • Walisgraben

    IUCN IV

    Federal Inventory of Amphibian Spawning Areas of National Importance

  • Egg-Eich

    IUCN Not Assigned

    Forest Reserves

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

Species present

2 279 distinct species · 20 240 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 31 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 Gretzenbach : 14 espèces reliées par 163 interactions GloBI sur 5 types (connectance 30.9%, filtre Serrano α=0.2). 19 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
163
Connectance
0.309
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

4km

Max discharge

0,3m³/s

Max Strahler

1

Segments matched

1

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