Ontologia

Rivière· 44 segments

Great Brak River

Crosses 2 administrative regions : Chris Hani, Joe Gqabi

rivière

Total length

137km

Max discharge

3,6m³/s

Max Strahler

5

Segments matched

44

River geography2 admin regions · 0 communes

Parent watershed

hybas-10816475101606 km²

2 administrative regions crossed (GADM L2)

  • Chris Hani
    Eastern Cape · South Africa
    152.6 km
    in this dpt
  • Joe Gqabi
    Eastern Cape · South Africa
    41.8 km
    in this dpt

1 page = 1 named river (aggregation of 44 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

133 distinct species · 220 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 29 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 Great Brak River : 22 espèces reliées par 30 interactions GloBI sur 3 types (connectance 6.5%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
30
Connectance
0.065
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

137km

Max discharge

3,6m³/s

Max Strahler

5

Segments matched

44

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