Ontologia

HydroBASINS lev08 watershed · #1081069940

Bassin de Ondja'a

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 : Dja et Lobo, Haut Nyong

Pfafstetter: 13249596

Sub-basin area

332,9km²

Upstream area

332,9km²

Discharge

4,35m³/s

Mean elev.

665m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Dja191 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Dja Faunal Reserve

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    331.44 km² overlap

  • Dja

    IUCN Not Applicable

    UNESCO-MAB Biosphere Reserve

    331.43 km² overlap

  • Dja

    IUCN IV

    Wildlife Reserve

    331.31 km² overlap

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

Species present

190 distinct species · 342 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

342 obs · 8 cellules
Obs. / cellule
≥ 280
280–279
6–279
3–5
< 3

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

Ecological tissue

Sample of 11 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 Ondja'a : 8 espèces reliées par 10 interactions GloBI sur 3 types (connectance 18.2%, filtre Serrano α=0.2). 3 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
11
Interactions affichées
10
Connectance
0.182
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°

23,5°C

Annual rain

1 630mm

Moisture idx (CMI)

0,03

Runoff

412mm/an

PET

1 577mm

AET

1 261mm

Mean slope

2,7°

Water table

68cm

Forest

100%

Crops

0%

Urban

0%

Protected

100%

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