Ontologia

HydroBASINS lev08 watershed · #1081594000

Bassin de Umgwenya

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, Nkangala

8% lakePfafstetter: 12520890

Sub-basin area

1 526,5km²

Upstream area

1 526,5km²

Discharge

6,51m³/s

Mean elev.

1 557m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Crocodile River2361 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

11 intersecting protected areas

2 more protected areas

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

Species present

3 706 distinct species · 119 673 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

119 673 obs · 41 cellules
Obs. / cellule
≥ 20 639
6 838–20 638
1 438–6 837
946–1 437
< 946

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

Ecological tissue

Sample of 20 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 Umgwenya : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 14 interactions GloBI sur 3 types (connectance 7.4%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
20
Interactions affichées
14
Connectance
0.074
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°

15,6°C

Annual rain

864mm

Moisture idx (CMI)

-0,38

Runoff

116mm/an

PET

1 407mm

AET

741mm

Mean slope

8,9°

Water table

552cm

Forest

64%

Crops

11%

Urban

0%

Protected

4%

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