Ontologia

HydroBASINS lev08 watershed · #2080552710

Bassin de la Saye

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 : Charente-Maritime, Gironde

Pfafstetter: 23216022

Sub-basin area

337,4km²

Upstream area

337,4km²

Discharge

5,6m³/s

Mean elev.

60m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de la Barbanne87 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

34 communes (GADM L5)

20 intersecting protected areas

11 more protected areas

  • zone humide des cabanes

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.13 km² overlap

  • lac vert

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.11 km² overlap

  • bois noir

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.08 km² overlap

  • pre de la saye

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.06 km² overlap

  • landes du glaive

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.04 km² overlap

  • terrier des pierres mc lgv

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.04 km² overlap

  • pas du loup

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.02 km² overlap

  • ruisseau du lucerat

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.02 km² overlap

  • mc bay wa saintonge energie

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • le lary

    IUCN IV

    Land acquired by a regional conservatory of natural areas

    0.01 km² overlap

  • carriere de saute-qui-peut

    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

2 931 distinct species · 117 432 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

117 432 obs · 20 cellules
Obs. / cellule
≥ 11 519
8 974–11 518
7 919–8 973
5 644–7 918
< 5 644

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

Ecological tissue

Sample of 40 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 Saye : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 161 interactions GloBI sur 5 types (connectance 18.7%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
161
Connectance
0.187
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°

12,4°C

Annual rain

900mm

Moisture idx (CMI)

-0,05

Runoff

522mm/an

PET

950mm

AET

667mm

Mean slope

1,2°

Water table

108cm

Forest

42%

Crops

11%

Urban

2%

Protected

0%

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