Ontologia

Rivière· 21 segments

la Semois

Crosses 2 administrative regions : Luxembourg, Namur

rivière

Total length

184km

Max discharge

16,3m³/s

Max Strahler

4

Segments matched

21

River geography2 admin regions · 0 communes

Parent watershed

hybas-20804325901335 km²

2 administrative regions crossed (GADM L2)

  • Luxembourg
    Wallonie · Belgium
    87.9 km
    in this dpt
  • Namur
    Wallonie · Belgium
    15.4 km
    in this dpt

30 intersecting protected areas

21 more protected areas

1 page = 1 named river (aggregation of 21 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

1 102 distinct species · 5 714 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 la Semois : 23 espèces reliées par 86 interactions GloBI sur 5 types (connectance 17.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
86
Connectance
0.173
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

184km

Max discharge

16,3m³/s

Max Strahler

4

Segments matched

21

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