Ontologia

HydroBASINS lev08 watershed · #1080825000

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 2 administrative regions : Borgu, Kaiama

Pfafstetter: 14238030

Sub-basin area

1 142,3km²

Upstream area

10 284,3km²

Discharge

77,89m³/s

Mean elev.

290m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Oli901 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Kainji Lake

    IUCN II

    National Park

    692.88 km² overlap

  • Borgu

    IUCN Not Reported

    Forest Reserve

    603.49 km² overlap

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

Species present

308 distinct species · 1 088 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 088 obs · 20 cellules
Obs. / cellule
≥ 407
106–406
64–105
30–63
< 30

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

Ecological tissue

Sample of 43 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 : 37 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 41 interactions GloBI sur 3 types (connectance 4.5%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
41
Connectance
0.045
Patrimoniales
2
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°

26,7°C

Annual rain

1 129mm

Moisture idx (CMI)

-0,40

Runoff

214mm/an

PET

1 892mm

AET

905mm

Mean slope

1,2°

Water table

131cm

Forest

82%

Crops

17%

Urban

1%

Protected

62%

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