Ontologia

Ruisseau· 3 segments

Le Merdanson

Crosses 3 administrative regions : Ain, Jura, Rhône

ruisseau

Total length

103km

Max discharge

1,4m³/s

Max Strahler

2

Segments matched

3

River geography3 admin regions · 11 communes

Parent watershed

hybas-2080523030690 km²

3 administrative regions crossed (GADM L2)

  • Ain
    Auvergne-Rhône-Alpes · France
    10.0 km
    in this dpt
  • Rhône
    Auvergne-Rhône-Alpes · France
    3.2 km
    in this dpt
  • Jura
    Bourgogne-Franche-Comté · France
    0.0 km
    in this dpt
11 communes (L5)

5 intersecting protected areas

1 page = 1 named river (aggregation of 3 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 091 distinct species · 6 833 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 33 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 Le Merdanson : 27 espèces + 6 bulles famille, 79 interactions GloBI documentées sur 5 types (connectance 15.0%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
33
Interactions affichées
79
Connectance
0.150
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

103km

Max discharge

1,4m³/s

Max Strahler

2

Segments matched

3

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