Ontologia

HydroBASINS lev08 watershed · #1081620260

Bassin de Orange River (Oranje)

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 across 2 countries : Karas, Namakwa

Pfafstetter: 12730100

Sub-basin area

1 058,7km²

Upstream area

796 731,2km²

Discharge

280,18m³/s

Mean elev.

483m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Nuab314 km²

▲ Receives from 9 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

1 387 distinct species · 10 202 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 202 obs · 28 cellules
Obs. / cellule
≥ 2 171
1 029–2 170
318–1 028
201–317
< 201

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

Ecological tissue

Sample of 47 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 (Oranje) : 39 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 4 types (connectance 4.1%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
47
Interactions affichées
44
Connectance
0.041
Patrimoniales
1
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°

17,7°C

Annual rain

68mm

Moisture idx (CMI)

-0,95

Runoff

12mm/an

PET

1 450mm

AET

58mm

Mean slope

11,9°

Water table

1 065cm

Forest

2%

Crops

0%

Urban

0%

Protected

97%

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