Ontologia

HydroBASINS lev08 watershed · #1081624550

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 1 administrative regions : Siyanda

Pfafstetter: 12770301

Sub-basin area

590,6km²

Upstream area

336 973km²

Discharge

305,66m³/s

Mean elev.

926m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Orange River217 km²

▲ Receives from 3 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

219 distinct species · 1 613 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 613 obs · 15 cellules
Obs. / cellule
≥ 424
251–423
154–250
44–153
< 44

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

Ecological tissue

Sample of 24 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 : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 17 interactions GloBI sur 2 types (connectance 6.2%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
17
Connectance
0.062
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°

19,4°C

Annual rain

222mm

Moisture idx (CMI)

-0,87

Runoff

16mm/an

PET

1 709mm

AET

186mm

Mean slope

2,5°

Water table

685cm

Forest

0%

Crops

1%

Urban

0%

Protected

0%

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