Ontologia

HydroBASINS lev08 watershed · #1081590430

Bassin de Tolwane 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 : Bojanala, City of Tshwane

Pfafstetter: 12499062

Sub-basin area

1 134,8km²

Upstream area

1 134,9km²

Discharge

0,41m³/s

Mean elev.

1 106m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Pienaars River105 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 527 distinct species · 61 776 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

61 776 obs · 29 cellules
Obs. / cellule
≥ 24 292
7 641–24 291
1 663–7 640
673–1 662
< 673

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

Ecological tissue

Sample of 19 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 Tolwane River : 19 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 13 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2).

Espèces affichées
19
Interactions affichées
13
Connectance
0.076
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°

19,1°C

Annual rain

618mm

Moisture idx (CMI)

-0,63

Runoff

13mm/an

PET

1 669mm

AET

522mm

Mean slope

1,2°

Water table

511cm

Forest

8%

Crops

16%

Urban

22%

Protected

3%

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