Ruisseau· 6 segments
Vier en Twintig Riviere
Crosses 2 administrative regions : Cape Winelands, West Coast
Total length
33km
Max discharge
3,1m³/s
Max Strahler
3
Segments matched
6
River geography2 admin regions · 0 communes
2 administrative regions crossed (GADM L2)
- West CoastWestern Cape · South Africa10.0 kmin this dpt
- Cape WinelandsWestern Cape · South Africa5.8 kmin this dpt
3 intersecting protected areas
Cape Floral Region Protected Areas
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
Groot-Winterhoek Wilderness Area
IUCN Not ReportedForest Wilderness Area
Die Eiland Private Nature Reserve
IUCN Not ReportedNature Reserve
1 page = 1 named river (aggregation of 6 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
272 distinct species · 549 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).
Indicateurs du tissu écologique
Tissu écologique de Vier en Twintig Riviere : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 5.0%, filtre Serrano α=0.2). 4 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)
Total length
33km
Max discharge
3,1m³/s
Max Strahler
3
Segments matched
6
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.