Ruisseau· 2 segments

L'Erre

Crosses 1 administrative regions : Orne

ruisseau

Total length

15km

Max discharge

0,6m³/s

Max Strahler

Segments matched

River geography1 admin regions · 8 communes

Parent watershed

hybas-20804820502420 km²

1 administrative regions crossed (GADM L2)

Orne
Normandie · France
12.8 km
in this dpt

8 communes (L5)For countries with L5

1 intersecting protected areas

Perche
IUCN V
Regional Nature Park

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

960 distinct species · 4 418 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 29 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de L'Erre : 22 espèces reliées par 102 interactions GloBI sur 5 types (connectance 19.3%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

102

Connectance

0.193

Patrimoniales

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)