Ontologia

HydroBASINS lev08 watershed · #1081657830

Bassin de Olifantsrivier

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 : Cacadu, Eden

Pfafstetter: 12580800

Sub-basin area

1 112,6km²

Upstream area

1 112,6km²

Discharge

2,16m³/s

Mean elev.

965m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Olifantsrivier2417 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

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

Species present

1 452 distinct species · 22 506 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

22 506 obs · 32 cellules
Obs. / cellule
≥ 8 803
1 472–8 802
324–1 471
177–323
< 177

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

Ecological tissue

Sample of 33 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 Olifantsrivier : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 35 interactions GloBI sur 3 types (connectance 6.6%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
33
Interactions affichées
35
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°

14,7°C

Annual rain

570mm

Moisture idx (CMI)

-0,55

Runoff

83mm/an

PET

1 264mm

AET

486mm

Mean slope

7,2°

Water table

575cm

Forest

0%

Crops

2%

Urban

0%

Protected

4%

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