Ontologia

Rivière· 60 segments

La Mayenne

Crosses 3 administrative regions : Maine-et-Loire, Mayenne, Orne

rivière

Total length

209km

Max discharge

67,2m³/s

Max Strahler

5

Segments matched

60

River geography3 admin regions · 87 communes

Parent watershed

hybas-2080478230811 km²

3 administrative regions crossed (GADM L2)

  • Mayenne
    Pays de la Loire · France
    171.9 km
    in this dpt
  • Maine-et-Loire
    Pays de la Loire · France
    29.7 km
    in this dpt
  • Orne
    Normandie · France
    19.1 km
    in this dpt
87 communes (L5)

9 intersecting protected areas

1 page = 1 named river (aggregation of 60 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 016 distinct species · 3 370 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 32 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 La Mayenne : 20 espèces reliées par 106 interactions GloBI sur 6 types (connectance 20.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
106
Connectance
0.201
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

209km

Max discharge

67,2m³/s

Max Strahler

5

Segments matched

60

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