Ontologia

HydroBASINS lev08 watershed · #1081653070

Bassin de Groot

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 3 administrative regions : Cape Winelands, Namakwa, West Coast

Pfafstetter: 12604803

Sub-basin area

286,1km²

Upstream area

2 646,9km²

Discharge

11,06m³/s

Mean elev.

889m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Groot13 km²

▲ Receives from 2 basins

3 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

1 119 distinct species · 14 126 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

14 126 obs · 8 cellules
Obs. / cellule
≥ 8 175
8 175–8 174
581–8 174
127–580
< 127

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

Ecological tissue

Sample of 31 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 Groot : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 27 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
32
Interactions affichées
27
Connectance
0.054
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°

15,0°C

Annual rain

323mm

Moisture idx (CMI)

-0,77

Runoff

83mm/an

PET

1 435mm

AET

274mm

Mean slope

13,4°

Water table

862cm

Forest

0%

Crops

5%

Urban

0%

Protected

36%

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