Fleuve majeur
Vioolsdrif Siphon
⚠ Partial coverage : only 1 named segment matched so far. The real fleuve majeur extends much further (Strahler order 9 indicates a major river). Cross-source ingest in progress — values below reflect only the matched segment.
Crosses 2 administrative regions : Karas, Namakwa
Max discharge
334,2m³/s
Max Strahler
9
Segments matched
1
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
1 page = 1 named river (aggregation of 1 HydroRIVERS v10 segment). Spatial join cached after first hit.
Species present
235 distinct species · 821 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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).
Indicateurs du tissu écologique
Tissu écologique de Vioolsdrif Siphon : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 4 types (connectance 5.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Matched len.
0,6km
Max discharge
334,2m³/s
Max Strahler
9
Segments matched
1
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.