Ontologia

HydroBASINS lev08 watershed · #1081640620

Bassin de Orange 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 3 administrative regions : Joe Gqabi, Pixley ka Seme, Xhariep

104% lakePfafstetter: 12780330

Sub-basin area

1 255,7km²

Upstream area

71 228,5km²

Discharge

166,32m³/s

Mean elev.

1 355m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Orange River2158 km²

3 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

845 distinct species · 17 968 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

17 968 obs · 28 cellules
Obs. / cellule
≥ 4 734
2 853–4 733
414–2 852
241–413
< 241

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

Ecological tissue

Sample of 27 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 Orange River : 24 espèces reliées par 23 interactions GloBI sur 3 types (connectance 6.1%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
23
Connectance
0.061
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°

16,0°C

Annual rain

422mm

Moisture idx (CMI)

-0,72

Runoff

12mm/an

PET

1 501mm

AET

358mm

Mean slope

3,2°

Water table

485cm

Forest

0%

Crops

4%

Urban

0%

Protected

18%

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