Ontologia

HydroBASINS lev08 watershed · #1081633580

Bassin de Rooidraai

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 : Umgungundlovu

Pfafstetter: 12553366

Sub-basin area

280,2km²

Upstream area

280,4km²

Discharge

1,91m³/s

Mean elev.

1 713m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mkomazi719 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

9 intersecting protected areas

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

Species present

726 distinct species · 6 565 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 565 obs · 8 cellules
Obs. / cellule
≥ 2 264
2 264–2 263
1 104–2 263
615–1 103
< 615

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

Ecological tissue

Sample of 38 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 Rooidraai : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 28 interactions GloBI sur 4 types (connectance 4.0%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
28
Connectance
0.040
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°

13,1°C

Annual rain

1 012mm

Moisture idx (CMI)

-0,18

Runoff

215mm/an

PET

1 245mm

AET

852mm

Mean slope

9,8°

Water table

525cm

Forest

51%

Crops

26%

Urban

0%

Protected

23%

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