Ontologia

HydroBASINS lev08 watershed · #2080016360

Bassin du Préconil

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 : Var

Coastal basinPfafstetter: 21601071

Sub-basin area

110,6km²

Upstream area

110,6km²

Discharge

0,23m³/s

Mean elev.

124m

Administrative coverage

1 dept-equivalent regions (GADM L2)

6 communes (GADM L5)

7 intersecting protected areas

  • La plaine et le massif des Maures

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    17.51 km² overlap

  • Les petites maures

    IUCN IV

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

    3.95 km² overlap

  • Embouchure de l'Argens

    IUCN Not Reported

    Special Areas of Conservation (Habitats Directive)

    1.12 km² overlap

  • saquedes

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.71 km² overlap

  • Les étangs de Villepey

    IUCN Not Reported

    Wetland of International Importance (Ramsar Site)

    0.49 km² overlap

  • Etangs de villepey

    IUCN IV

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

    0.48 km² overlap

  • Saquèdes

    IUCN IV

    Biotope Protection Order

    0.37 km² overlap

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

Species present

5 465 distinct species · 246 671 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

246 671 obs · 10 cellules
Obs. / cellule
≥ 178 447
178 447–178 446
12 177–178 446
8 783–12 176
< 8 783

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

Ecological tissue

Sample of 44 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 Préconil : 32 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 97 interactions GloBI sur 3 types (connectance 10.3%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
44
Interactions affichées
97
Connectance
0.102
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°

14,1°C

Annual rain

816mm

Moisture idx (CMI)

-0,12

Runoff

576mm/an

PET

928mm

AET

623mm

Mean slope

9,1°

Water table

427cm

Forest

61%

Crops

2%

Urban

29%

Protected

3%

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