Ontologia

HydroBASINS lev08 watershed · #1081586620

Bassin de Ohrigstadrivier

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 : Ehlanzeni, Sekhukhune

5% lakePfafstetter: 12440588

Sub-basin area

171,4km²

Upstream area

171,4km²

Discharge

0,64m³/s

Mean elev.

1 646m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Ohrigstadrivier399 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

5 intersecting protected areas

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

Species present

1 085 distinct species · 22 054 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

22 054 obs · 4 cellules
Obs. / cellule
≥ 17 657
17 657–17 656
2 328–17 656
2 328–2 327
< 2 328

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

Ecological tissue

Sample of 23 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 Ohrigstadrivier : 21 espèces reliées par 16 interactions GloBI sur 4 types (connectance 6.3%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
23
Interactions affichées
16
Connectance
0.063
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°

15,2°C

Annual rain

996mm

Moisture idx (CMI)

-0,25

Runoff

119mm/an

PET

1 329mm

AET

873mm

Mean slope

12,2°

Water table

651cm

Forest

58%

Crops

9%

Urban

0%

Protected

58%

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