Ontologia

HydroBASINS lev08 watershed · #2080555520

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 : Ardèche, Haute-Loire, Lozère

17% lakePfafstetter: 23228099

Sub-basin area

516,9km²

Upstream area

516,9km²

Discharge

7,97m³/s

Mean elev.

1 128m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de l'Allier154 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

37 communes (GADM L5)

10 intersecting protected areas

  • Haut Val d'Allier

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    23.69 km² overlap

  • Monts D\'Ardèche

    IUCN V

    Regional Nature Park

    16.79 km² overlap

  • Gorges de l'Allier et affluents

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    16.10 km² overlap

  • Allier et ses affluents

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    8.79 km² overlap

  • le bois brûle - le bois cesse

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.17 km² overlap

  • Loire et ses affluents

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.07 km² overlap

  • granat

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.06 km² overlap

  • les fis

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.04 km² overlap

  • les fangeires

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.02 km² overlap

1 more protected areas

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

Species present

4 253 distinct species · 265 287 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

265 287 obs · 27 cellules
Obs. / cellule
≥ 58 880
21 653–58 879
9 587–21 652
6 981–9 586
< 6 981

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

Ecological tissue

Sample of 26 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 : 21 espèces reliées par 68 interactions GloBI sur 5 types (connectance 20.9%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
26
Interactions affichées
68
Connectance
0.209
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°

7,2°C

Annual rain

829mm

Moisture idx (CMI)

0,07

Runoff

499mm/an

PET

769mm

AET

630mm

Mean slope

7,7°

Water table

426cm

Forest

81%

Crops

10%

Urban

0%

Protected

3%

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