Ontologia

HydroBASINS lev08 watershed · #1080827030

Bassin de Oli

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 3 administrative regions : Borgu, Kaiama, Mashegu

Pfafstetter: 14238010

Sub-basin area

900,7km²

Upstream area

11 692,2km²

Discharge

86,64m³/s

Mean elev.

228m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger2239 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Borgu

    IUCN Not Reported

    Forest Reserve

    81.23 km² overlap

  • Kainji Lake

    IUCN II

    National Park

    43.40 km² overlap

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

Species present

245 distinct species · 1 709 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 709 obs · 15 cellules
Obs. / cellule
≥ 408
290–407
124–289
86–123
< 86

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 Oli : 19 espèces reliées par 21 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
21
Connectance
0.076
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°

27,0°C

Annual rain

1 115mm

Moisture idx (CMI)

-0,41

Runoff

194mm/an

PET

1 899mm

AET

893mm

Mean slope

1,2°

Water table

122cm

Forest

48%

Crops

16%

Urban

2%

Protected

9%

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