Ontologia

Ruisseau· 18 segments

Orba

Crosses 3 administrative regions : Alessandria, Genova, Savona

ruisseau

Total length

50km

Max discharge

18,8m³/s

Max Strahler

3

Segments matched

18

River geography3 admin regions · 0 communes

Parent watershed

hybas-20805538302590 km²

3 administrative regions crossed (GADM L2)

  • Alessandria
    Piemonte · Italy
    79.5 km
    in this dpt
  • Genova
    Liguria · Italy
    4.0 km
    in this dpt
  • Savona
    Liguria · Italy
    0.0 km
    in this dpt

6 intersecting protected areas

1 page = 1 named river (aggregation of 18 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

398 distinct species · 975 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 42 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 Orba : 32 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 118 interactions GloBI sur 5 types (connectance 12.5%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
118
Connectance
0.125
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

50km

Max discharge

18,8m³/s

Max Strahler

3

Segments matched

18

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