Ontologia

HydroBASINS lev08 watershed · #1081652160

Bassin de Rhenoster

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 : Cape Winelands, Namakwa

Pfafstetter: 12604604

Sub-basin area

836,6km²

Upstream area

836,6km²

Discharge

0,37m³/s

Mean elev.

872m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Tankwa200 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

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

Species present

1 175 distinct species · 16 698 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

16 698 obs · 22 cellules
Obs. / cellule
≥ 4 071
2 287–4 070
616–2 286
251–615
< 251

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

Ecological tissue

Sample of 40 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 Rhenoster : 31 espèces reliées par 45 interactions GloBI sur 3 types (connectance 5.8%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
40
Interactions affichées
45
Connectance
0.058
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°

16,3°C

Annual rain

165mm

Moisture idx (CMI)

-0,89

Runoff

14mm/an

PET

1 570mm

AET

139mm

Mean slope

7,0°

Water table

887cm

Forest

0%

Crops

1%

Urban

0%

Protected

65%

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