Ontologia

Rivière· 2 segments

Hornan

Crosses 1 administrative regions : Älvdalen

rivière

Total length

15km

Max discharge

49,7m³/s

Max Strahler

5

Segments matched

2

River geography1 admin regions · 0 communes

Parent watershed

hybas-2080211400301 km²

1 administrative regions crossed (GADM L2)

10 intersecting protected areas

1 more protected areas

  • 68E2b7920

    IUCN Not Applicable

    Voluntary set-aside areas

1 page = 1 named river (aggregation of 2 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

239 distinct species · 423 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 Hornan : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 4 types (connectance 4.9%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
42
Connectance
0.049
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

15km

Max discharge

49,7m³/s

Max Strahler

5

Segments matched

2

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