Ontologia

HydroBASINS lev08 watershed · #1081652390

Bassin de Olifants 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 : West Coast

Pfafstetter: 12604347

Sub-basin area

132,7km²

Upstream area

1 291km²

Discharge

6,95m³/s

Mean elev.

384m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Olifants River627 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

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

Species present

429 distinct species · 1 037 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 037 obs · 2 cellules
Obs. / cellule
≥ 522
522–521
522–521
522–521
< 522

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

Ecological tissue

Sample of 42 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 Olifants River : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 39 interactions GloBI sur 3 types (connectance 4.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
39
Connectance
0.045
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°

17,3°C

Annual rain

361mm

Moisture idx (CMI)

-0,76

Runoff

90mm/an

PET

1 535mm

AET

306mm

Mean slope

9,9°

Water table

604cm

Forest

13%

Crops

14%

Urban

0%

Protected

16%

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