Ontologia

HydroBASINS lev08 watershed · #1080720070

Bassin de Vranso

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 4 administrative regions : Nayala, Passoré, Sanguié, Zondoma

Pfafstetter: 14470604

Sub-basin area

2 080,5km²

Upstream area

2 080,9km²

Discharge

1,23m³/s

Mean elev.

303m

Administrative coverage

Hydrographic chain

Drains into

Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Twessé

    IUCN Not Reported

    Classified Forest

    5.94 km² overlap

  • Niouma

    IUCN Not Reported

    Classified Forest

    0.72 km² overlap

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

Species present

151 distinct species · 407 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

407 obs · 30 cellules
Obs. / cellule
≥ 49
32–48
19–31
11–18
< 11

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

Ecological tissue

Sample of 6 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 Vranso : 5 espèces reliées par 4 interactions GloBI sur 2 types (connectance 26.7%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
6
Interactions affichées
4
Connectance
0.267
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°

28,2°C

Annual rain

690mm

Moisture idx (CMI)

-0,66

Runoff

17mm/an

PET

2 037mm

AET

581mm

Mean slope

0,6°

Water table

134cm

Forest

0%

Crops

28%

Urban

2%

Protected

0%

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