Ontologia

Ruisseau· 14 segments

La Saâne

Crosses 1 administrative regions : Seine-Maritime

ruisseau

Total length

41km

Max discharge

6m³/s

Max Strahler

3

Segments matched

14

River geography1 admin regions · 41 communes

Parent watershed

hybas-2080022250788 km²

1 administrative regions crossed (GADM L2)

41 communes (L5)

5 intersecting protected areas

  • Littoral seino-marin

    IUCN Not Reported

    Special Protection Area (Birds Directive)

  • Littoral Cauchois

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

  • Littoral Cauchois

    IUCN Not Reported

    Marine Protected Area (OSPAR)

  • Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

  • Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

1 page = 1 named river (aggregation of 14 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

737 distinct species · 5 564 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 La Saâne : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 117 interactions GloBI sur 5 types (connectance 20.9%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
117
Connectance
0.209
Patrimoniales
1
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

41km

Max discharge

6,0m³/s

Max Strahler

3

Segments matched

14

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