Ontologia

HydroBASINS lev08 watershed · #1081209490

Bassin de Oldupai 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 : Ngorongoro

EndorheicPfafstetter: 11520403

Sub-basin area

676,6km²

Upstream area

3 592,9km²

Discharge

6,1m³/s

Mean elev.

1 681m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin · #10800438205 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

  • Ngorongoro
    Arusha · Tanzania
    673.6 km²
    100.0% of basin

2 intersecting protected areas

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

Species present

664 distinct species · 8 485 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

8 485 obs · 16 cellules
Obs. / cellule
≥ 3 510
2 403–3 509
336–2 402
262–335
< 262

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

Ecological tissue

Sample of 34 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 Oldupai River : 29 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 45 interactions GloBI sur 3 types (connectance 8.0%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
45
Connectance
0.080
Patrimoniales
3
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°

18,7°C

Annual rain

673mm

Moisture idx (CMI)

-0,52

Runoff

66mm/an

PET

1 458mm

AET

563mm

Mean slope

5,2°

Water table

293cm

Forest

13%

Crops

8%

Urban

0%

Protected

100%

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