Ontologia

HydroBASINS lev08 watershed · #1081651670

Bassin de Great Fish River

A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.

Crosses 1 administrative regions : Chris Hani

Pfafstetter: 12556701

Sub-basin area

537,7km²

Upstream area

11 495,6km²

Discharge

3,65m³/s

Mean elev.

1 056m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Great Fish River337 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 205 distinct species · 11 923 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 923 obs · 16 cellules
Obs. / cellule
≥ 3 292
3 287–3 291
668–3 286
190–667
< 190

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 33 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 Bassin de Great Fish River : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 22 interactions GloBI sur 4 types (connectance 3.9%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
22
Connectance
0.039
Patrimoniales
2
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

15,7°C

Annual rain

390mm

Moisture idx (CMI)

-0,73

Runoff

11mm/an

PET

1 468mm

AET

331mm

Mean slope

7,2°

Water table

807cm

Forest

0%

Crops

5%

Urban

3%

Protected

2%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)