Ontologia

HydroBASINS lev08 watershed · #1080788650

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 : Kankan, Kouroussa

Pfafstetter: 14298410

Sub-basin area

740,9km²

Upstream area

12 944,5km²

Discharge

224,35m³/s

Mean elev.

421m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Niandan8 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Niger-Niandan-Milo

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    737.94 km² overlap

  • Baro

    IUCN Not Reported

    Classified Forest

    0.98 km² overlap

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

Species present

216 distinct species · 296 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

296 obs · 23 cellules
Obs. / cellule
≥ 216
10–215
4–9
3–3
< 3

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

Ecological tissue

Sample of 36 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 : 34 espèces reliées par 26 interactions GloBI sur 4 types (connectance 4.1%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
26
Connectance
0.041
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°

25,7°C

Annual rain

1 526mm

Moisture idx (CMI)

-0,27

Runoff

396mm/an

PET

2 103mm

AET

1 087mm

Mean slope

3,0°

Water table

184cm

Forest

40%

Crops

4%

Urban

0%

Protected

14%

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