Ontologia

HydroBASINS lev08 watershed · #1080582050

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 : Gao

11% lakePfafstetter: 14275090

Sub-basin area

177,6km²

Upstream area

517 381,5km²

Discharge

871,39m³/s

Mean elev.

263m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

1 dept-equivalent regions (GADM L2)

  • Gao
    Gao · Mali
    177.0 km²
    100.0% of basin

1 intersecting protected areas

  • Djidara

    IUCN IV

    Classified Forest

    1.34 km² overlap

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

Species present

196 distinct species · 453 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

453 obs · 4 cellules
Obs. / cellule
≥ 350
350–349
47–349
47–46
< 47

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

Ecological tissue

Sample of 17 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 : 17 espèces + 0 bulles famille, 11 interactions GloBI documentées sur 3 types (connectance 8.1%, filtre Serrano α=0.2).

Espèces affichées
17
Interactions affichées
11
Connectance
0.081
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°

29,9°C

Annual rain

201mm

Moisture idx (CMI)

-0,91

Runoff

65mm/an

PET

2 149mm

AET

166mm

Mean slope

0,5°

Water table

115cm

Forest

0%

Crops

0%

Urban

4%

Protected

0%

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