Ontologia

HydroBASINS lev08 watershed · #1080735220

Bassin du Niger

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 across 2 countries : Dosso, Gaya, Karimama

Pfafstetter: 14259003

Sub-basin area

254,6km²

Upstream area

1 251 590,1km²

Discharge

1 216,2m³/s

Mean elev.

189m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger412 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

  • Karimama
    Alibori · Benin
    214.5 km²
    84.6% of basin
  • Dosso
    Dosso · Niger
    33.5 km²
    13.2% of basin
  • Gaya
    Dosso · Niger
    5.7 km²
    2.2% of basin

6 intersecting protected areas

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

Species present

489 distinct species · 1 300 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 300 obs · 8 cellules
Obs. / cellule
≥ 686
686–685
111–685
110–110
< 110

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

Ecological tissue

Sample of 31 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 du Niger : 21 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 4 types (connectance 7.7%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
31
Interactions affichées
36
Connectance
0.077
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°

29,0°C

Annual rain

681mm

Moisture idx (CMI)

-0,66

Runoff

96mm/an

PET

2 018mm

AET

574mm

Mean slope

0,7°

Water table

156cm

Forest

0%

Crops

13%

Urban

2%

Protected

1%

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