Ontologia

HydroBASINS lev08 watershed · #2080509200

Bassin de l'Allier

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 3 administrative regions : Allier, Cher, Nièvre

Pfafstetter: 23228010

Sub-basin area

1 788,9km²

Upstream area

14 308,2km²

Discharge

135,43m³/s

Mean elev.

250m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de la Loire1555 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

88 communes (GADM L5)

25 intersecting protected areas

16 more protected areas

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

Species present

6 581 distinct species · 386 190 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

386 190 obs · 55 cellules
Obs. / cellule
≥ 24 722
16 858–24 721
8 671–16 857
5 173–8 670
< 5 173

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

Ecological tissue

Sample of 41 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 l'Allier : 36 espèces + 5 bulles famille, 91 interactions GloBI documentées sur 4 types (connectance 11.1%, filtre Serrano α=0.2). Les 5 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
41
Interactions affichées
91
Connectance
0.111
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°

10,7°C

Annual rain

746mm

Moisture idx (CMI)

-0,16

Runoff

255mm/an

PET

892mm

AET

625mm

Mean slope

1,8°

Water table

144cm

Forest

5%

Crops

21%

Urban

1%

Protected

1%

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