Ontologia

HydroBASINS lev08 watershed · #1081658040

Bassin de Bezuidenhouts

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 : Cacadu, Nelson Mandela Bay

Pfafstetter: 12558015

Sub-basin area

574,3km²

Upstream area

19 363,4km²

Discharge

12,27m³/s

Mean elev.

296m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Sundays River81 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

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

Species present

1 316 distinct species · 11 315 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

11 315 obs · 15 cellules
Obs. / cellule
≥ 4 591
1 013–4 590
695–1 012
539–694
< 539

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 Bezuidenhouts : 25 espèces reliées par 28 interactions GloBI sur 4 types (connectance 6.9%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
28
Connectance
0.069
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°

17,9°C

Annual rain

387mm

Moisture idx (CMI)

-0,73

Runoff

53mm/an

PET

1 451mm

AET

329mm

Mean slope

6,9°

Water table

659cm

Forest

74%

Crops

10%

Urban

2%

Protected

12%

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