Ruisseau· 11 segments

Le Petit Lay

Crosses 1 administrative regions : Vendée

ruisseau

Total length

70km

Max discharge

5,7m³/s

Max Strahler

Segments matched

River geography1 admin regions · 18 communes

Parent watershed

hybas-20800208301999 km²

1 administrative regions crossed (GADM L2)

Vendée
Pays de la Loire · France
46.3 km
in this dpt

18 communes (L5)For countries with L5

1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

544 distinct species · 7 025 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Le Petit Lay : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 84 interactions GloBI sur 6 types (connectance 15.0%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.150

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)