Ontologia

HydroBASINS lev08 watershed · #1081653560

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 2 administrative regions : Cacadu, Chris Hani

Pfafstetter: 12556505

Sub-basin area

395,3km²

Upstream area

17 480,3km²

Discharge

5,59m³/s

Mean elev.

898m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Great Fish River332 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

856 distinct species · 4 317 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

4 317 obs · 12 cellules
Obs. / cellule
≥ 1 593
875–1 592
329–874
247–328
< 247

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

Ecological tissue

Sample of 28 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 : 23 espèces reliées par 25 interactions GloBI sur 4 types (connectance 6.6%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
25
Connectance
0.066
Patrimoniales
0
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°

16,3°C

Annual rain

500mm

Moisture idx (CMI)

-0,65

Runoff

22mm/an

PET

1 442mm

AET

424mm

Mean slope

10,7°

Water table

829cm

Forest

67%

Crops

17%

Urban

0%

Protected

0%

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