Ontologia

HydroBASINS lev08 watershed · #1080711700

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 1 administrative regions : Say

Pfafstetter: 14271502

Sub-basin area

187,7km²

Upstream area

187,9km²

Discharge

0,37m³/s

Mean elev.

239m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin du Niger283 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

1 dept-equivalent regions (GADM L2)

  • Say
    Tillabéry · Niger
    187.0 km²
    100.0% of basin

2 intersecting protected areas

  • Parc national du W

    IUCN Ia

    Wetland of International Importance (Ramsar Site)

    186.98 km² overlap

  • Tamou

    IUCN IV

    Game Reserve

    74.77 km² overlap

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

Species present

3 distinct species · 6 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 obs · 1 cellules
Obs. / cellule
≥ 2
2–1
2–1
2–1
< 2

Source : GBIF — observations agrégées par hexagones 0.02° × 0.02° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 2 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 : 2 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 0 bulles famille, 1 interaction GloBI documentées sur 1 type (connectance 100.0%, filtre Serrano α=0.2).

Espèces affichées
2
Interactions affichées
1
Connectance
1.000
Patrimoniales
1
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°

28,7°C

Annual rain

634mm

Moisture idx (CMI)

-0,69

Runoff

61mm/an

PET

2 058mm

AET

534mm

Mean slope

0,3°

Water table

295cm

Forest

0%

Crops

25%

Urban

0%

Protected

100%

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