Ontologia

HydroBASINS lev08 watershed · #2080020840

Bassin du Jaunay

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 1 administrative regions : Vendée

Coastal basin 3% lakePfafstetter: 23219070

Sub-basin area

893km²

Upstream area

893km²

Discharge

1,45m³/s

Mean elev.

35m

Administrative coverage

1 dept-equivalent regions (GADM L2)

48 communes (GADM L5)

28 intersecting protected areas

19 more protected areas

  • Pertuis charentais - Rochebonne

    IUCN Not Reported

    Marine Protected Area (OSPAR)

    3.34 km² overlap

  • Pertuis charentais - Rochebonne

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    3.01 km² overlap

  • Casse De La Belle Henriette

    IUCN IV

    National Nature Reserve

    2.81 km² overlap

  • Pointe d\'arcay

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    2.51 km² overlap

  • Pertuis Charentais

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    2.18 km² overlap

  • Pertuis charentais

    IUCN Not Reported

    Marine Protected Area (OSPAR)

    2.18 km² overlap

  • Pointe du payre

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    1.77 km² overlap

  • Pointe D\'Arçay

    IUCN IV

    Forest Managed Biological Reserve

    1.72 km² overlap

  • Marais d\'olonne

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    1.62 km² overlap

  • Secteur de l'île d'Yeu

    IUCN Not Reported

    Marine Protected Area (OSPAR)

    1.17 km² overlap

  • Secteur marin de l'île d'Yeu jusqu'au continent

    IUCN Not Reported

    Special Protection Area (Birds Directive)

    1.17 km² overlap

  • Dunes du jaunay et de la sauzaie

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.80 km² overlap

  • Le veillon

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.64 km² overlap

  • La gachere

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.51 km² overlap

  • Le bois saint-jean

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.25 km² overlap

  • Puits d’enfer

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.25 km² overlap

  • Vallee De La Cruliere

    IUCN IV

    Biotope Protection Order

    0.08 km² overlap

  • L\'Ileau De Champclou

    IUCN IV

    Biotope Protection Order

    0.04 km² overlap

  • Belle henriette

    IUCN IV

    Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)

    0.02 km² overlap

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

Species present

5 447 distinct species · 185 196 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

185 196 obs · 24 cellules
Obs. / cellule
≥ 29 067
20 768–29 066
8 738–20 767
5 707–8 737
< 5 707

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 du Jaunay : 33 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 89 interactions GloBI sur 5 types (connectance 9.9%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
43
Interactions affichées
89
Connectance
0.099
Patrimoniales
3
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°

12,1°C

Annual rain

827mm

Moisture idx (CMI)

0,04

Runoff

555mm/an

PET

796mm

AET

583mm

Mean slope

1,0°

Water table

72cm

Forest

2%

Crops

55%

Urban

5%

Protected

1%

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