Ontologia

HydroBASINS lev08 watershed · #1081614490

Bassin de Gaab

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 : Karas, Keetmanshoop Rural

Pfafstetter: 12720306

Sub-basin area

2 691,4km²

Upstream area

2 691,6km²

Discharge

0,54m³/s

Mean elev.

1 143m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Fish River458 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

589 distinct species · 1 723 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 723 obs · 48 cellules
Obs. / cellule
≥ 393
128–392
13–127
8–12
< 8

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

Ecological tissue

Sample of 24 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 Gaab : 21 espèces reliées par 16 interactions GloBI sur 3 types (connectance 5.8%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
16
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°

18,6°C

Annual rain

128mm

Moisture idx (CMI)

-0,93

Runoff

6mm/an

PET

1 716mm

AET

106mm

Mean slope

2,8°

Water table

1 027cm

Forest

0%

Crops

0%

Urban

0%

Protected

15%

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