Ontologia

HydroBASINS lev08 watershed · #2080502920

Bassin de la Vienne

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 : Indre-et-Loire, Maine-et-Loire, Vienne

Pfafstetter: 23224010

Sub-basin area

1 303,3km²

Upstream area

21 027,8km²

Discharge

212,06m³/s

Mean elev.

82m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de la Loire96 km²

▲ Receives from 2 basins

3 dept-equivalent regions (GADM L2)

105 communes (GADM L5)

23 intersecting protected areas

14 more protected areas

  • Puys Du Chinonais

    IUCN IV

    Biotope Protection Order

    0.08 km² overlap

  • perou (le)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.05 km² overlap

  • vallee du reveillon (la)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.05 km² overlap

  • hauts pres (les)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.03 km² overlap

  • bec des deux eaux (le)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.02 km² overlap

  • bocage du veron (le)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.02 km² overlap

  • pelouses du chateau d\'amirette (les)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.02 km² overlap

  • grands bois (les)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • trotte loup

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • vallee de la manse (la)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • les bois de chougnes

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • pierre galle

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • gachaux (les)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.00 km² overlap

  • cave du puy aux boeufs (la)

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.00 km² overlap

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

Species present

7 027 distinct species · 613 986 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

613 986 obs · 60 cellules
Obs. / cellule
≥ 66 507
18 834–66 506
12 349–18 833
7 071–12 348
< 7 071

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

Ecological tissue

Sample of 37 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 la Vienne : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 147 interactions GloBI sur 5 types (connectance 20.9%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
147
Connectance
0.209
Patrimoniales
1
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°

11,5°C

Annual rain

693mm

Moisture idx (CMI)

-0,21

Runoff

211mm/an

PET

878mm

AET

580mm

Mean slope

1,6°

Water table

124cm

Forest

6%

Crops

60%

Urban

0%

Protected

52%

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