Ontologia

HydroBASINS lev08 watershed · #1081620180

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 : Lejweleputswa

2% lakePfafstetter: 12796075

Sub-basin area

628,2km²

Upstream area

5 414,2km²

Discharge

2,17m³/s

Mean elev.

1 407m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sand River464 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

443 distinct species · 11 855 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 855 obs · 18 cellules
Obs. / cellule
≥ 6 039
2 097–6 038
391–2 096
282–390
< 282

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

Ecological tissue

Sample of 29 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 : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 21 interactions GloBI sur 3 types (connectance 5.2%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
21
Connectance
0.052
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°

16,2°C

Annual rain

578mm

Moisture idx (CMI)

-0,62

Runoff

15mm/an

PET

1 541mm

AET

489mm

Mean slope

1,4°

Water table

468cm

Forest

0%

Crops

46%

Urban

4%

Protected

0%

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