Ontologia

HydroBASINS lev08 watershed · #1080842900

Bassin de Niandan

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 : Faranah, Kissidougou

Pfafstetter: 14298490

Sub-basin area

2 194,2km²

Upstream area

2 194,2km²

Discharge

52,54m³/s

Mean elev.

555m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Niandan1313 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

4 intersecting protected areas

  • Niger Source

    IUCN IV

    Classified Forest

    24.89 km² overlap

  • Selly-Koro

    IUCN Not Reported

    Classified Forest

    13.26 km² overlap

  • Ouladin

    IUCN Not Reported

    Classified Forest

    8.17 km² overlap

  • Bambaya

    IUCN Not Reported

    Classified Forest

    4.08 km² overlap

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

Species present

219 distinct species · 659 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

659 obs · 36 cellules
Obs. / cellule
≥ 132
58–131
20–57
7–19
< 7

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 Niandan : 19 espèces reliées par 20 interactions GloBI sur 2 types (connectance 7.2%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
20
Connectance
0.072
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°

24,7°C

Annual rain

2 098mm

Moisture idx (CMI)

-0,01

Runoff

872mm/an

PET

2 124mm

AET

1 388mm

Mean slope

2,7°

Water table

131cm

Forest

47%

Crops

10%

Urban

2%

Protected

1%

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