Ontologia

HydroBASINS lev08 watershed · #1081658950

Bassin de Hex 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 : Cape Winelands

2% lakePfafstetter: 12590068

Sub-basin area

830,3km²

Upstream area

830,4km²

Discharge

3,44m³/s

Mean elev.

921m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Breede River2496 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

2 482 distinct species · 18 260 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 260 obs · 27 cellules
Obs. / cellule
≥ 7 174
1 081–7 173
560–1 080
345–559
< 345

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

Ecological tissue

Sample of 35 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 Hex River : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 3 types (connectance 5.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
35
Interactions affichées
33
Connectance
0.056
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°

13,8°C

Annual rain

442mm

Moisture idx (CMI)

-0,65

Runoff

151mm/an

PET

1 303mm

AET

378mm

Mean slope

15,6°

Water table

735cm

Forest

8%

Crops

12%

Urban

4%

Protected

56%

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