Ontologia

HydroBASINS lev08 watershed · #1081649220

Bassin de Brandewyn

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 : Namakwa, West Coast

Pfafstetter: 12604350

Sub-basin area

1 029,7km²

Upstream area

24 035,6km²

Discharge

30m³/s

Mean elev.

403m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Olifants River367 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

2 725 distinct species · 75 747 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

75 747 obs · 29 cellules
Obs. / cellule
≥ 43 151
7 055–43 150
891–7 054
455–890
< 455

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

Ecological tissue

Sample of 28 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 Brandewyn : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 3 types (connectance 6.6%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
28
Interactions affichées
25
Connectance
0.066
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°

17,9°C

Annual rain

260mm

Moisture idx (CMI)

-0,84

Runoff

38mm/an

PET

1 592mm

AET

219mm

Mean slope

5,8°

Water table

853cm

Forest

0%

Crops

11%

Urban

0%

Protected

4%

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