Ontologia

Rivière· 14 segments

North Anna River

Crosses 5 administrative regions : Caroline, Hanover, Louisa, Orange, Spotsylvania

rivière

Total length

73km

Max discharge

17,5m³/s

Max Strahler

4

Segments matched

14

River geography5 admin regions · 0 communes

Parent watershed

hybas-70805943701543 km²

5 administrative regions crossed (GADM L2)

  • Caroline
    Virginia · United States
    22.7 km
    in this dpt
  • Hanover
    Virginia · United States
    14.0 km
    in this dpt
  • Louisa
    Virginia · United States
    13.0 km
    in this dpt
  • Orange
    Virginia · United States
    10.1 km
    in this dpt
  • Spotsylvania
    Virginia · United States
    7.3 km
    in this dpt

1 intersecting protected areas

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

Species present

108 distinct species · 828 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 North Anna River : 22 espèces reliées par 60 interactions GloBI sur 3 types (connectance 11.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
60
Connectance
0.114
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

73km

Max discharge

17,5m³/s

Max Strahler

4

Segments matched

14

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