Ontologia

HydroBASINS lev08 watershed · #1081549880

Bassin de Sand 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 : Vhembe

Pfafstetter: 12450610

Sub-basin area

1 477,4km²

Upstream area

13 618,3km²

Discharge

16,52m³/s

Mean elev.

629m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Limpopo480 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

7 intersecting protected areas

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

Species present

1 375 distinct species · 10 298 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

10 298 obs · 33 cellules
Obs. / cellule
≥ 3 432
450–3 431
226–449
87–225
< 87

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 Sand River : 17 espèces reliées par 15 interactions GloBI sur 3 types (connectance 8.8%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
19
Interactions affichées
15
Connectance
0.088
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°

22,0°C

Annual rain

408mm

Moisture idx (CMI)

-0,76

Runoff

64mm/an

PET

1 675mm

AET

343mm

Mean slope

1,8°

Water table

607cm

Forest

0%

Crops

50%

Urban

0%

Protected

5%

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