Ontologia

HydroBASINS lev08 watershed · #2080522820

Bassin de l'Autise

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 : Deux-Sèvres, Vendée

Pfafstetter: 23219044

Sub-basin area

422,7km²

Upstream area

422,9km²

Discharge

6,49m³/s

Mean elev.

82m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Fossé du Bois Billaud173 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

41 communes (GADM L5)

14 intersecting protected areas

  • Marais Poitevin

    IUCN V

    Regional Nature Park

    112.22 km² overlap

  • Plaine de Niort Nord-Ouest

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    74.57 km² overlap

  • Marais poitevin

    IUCN III

    Wetland of International Importance (Ramsar Site)

    32.04 km² overlap

  • Marais poitevin

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    31.90 km² overlap

  • Marais Poitevin

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    31.75 km² overlap

  • Vallée de l Autize

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.26 km² overlap

  • Bassin du Thouet amont

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.98 km² overlap

  • bocage du saumort et affluents

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.18 km² overlap

  • Marais Poitevin

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    0.15 km² overlap

5 more protected areas

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

Species present

1 890 distinct species · 52 951 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

52 951 obs · 11 cellules
Obs. / cellule
≥ 9 690
9 113–9 689
6 010–9 112
3 427–6 009
< 3 427

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

Ecological tissue

Sample of 42 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'Autise : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 6 types (connectance 10.5%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
90
Connectance
0.104
Patrimoniales
2
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°

11,8°C

Annual rain

782mm

Moisture idx (CMI)

-0,08

Runoff

483mm/an

PET

852mm

AET

591mm

Mean slope

1,6°

Water table

104cm

Forest

0%

Crops

57%

Urban

0%

Protected

0%

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