Ontologia

Ruisseau· 19 segments

L'Ernée

Crosses 2 administrative regions : Ille-et-Vilaine, Mayenne

ruisseau

Total length

69km

Max discharge

5,8m³/s

Max Strahler

3

Segments matched

19

River geography2 admin regions · 19 communes

Parent watershed

hybas-2080478220421 km²

2 administrative regions crossed (GADM L2)

  • Mayenne
    Pays de la Loire · France
    67.9 km
    in this dpt
  • Ille-et-Vilaine
    Bretagne · France
    0.0 km
    in this dpt
19 communes (L5)

7 intersecting protected areas

1 page = 1 named river (aggregation of 19 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

449 distinct species · 2 155 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 43 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 L'Ernée : 28 espèces reliées par 93 interactions GloBI sur 6 types (connectance 10.3%, filtre Serrano α=0.2). 15 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
93
Connectance
0.103
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

69km

Max discharge

5,8m³/s

Max Strahler

3

Segments matched

19

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