Ontologia

HydroBASINS lev08 watershed · #2080020430

Bassin · #2080020430

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 : Landes

Coastal basinPfafstetter: 23213003

Sub-basin area

32km²

Upstream area

32km²

Discharge

0,63m³/s

Mean elev.

24m

Administrative coverage

1 dept-equivalent regions (GADM L2)

3 communes (GADM L5)

2 intersecting protected areas

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

Species present

1 819 distinct species · 20 448 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

20 448 obs · 5 cellules
Obs. / cellule
≥ 8 784
8 784–8 783
4 333–8 783
3 331–4 332
< 3 331

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

Ecological tissue

Sample of 36 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 · #2080020430 : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 103 interactions GloBI sur 4 types (connectance 16.3%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
103
Connectance
0.164
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°

13,2°C

Annual rain

1 234mm

Moisture idx (CMI)

0,27

Runoff

625mm/an

PET

906mm

AET

751mm

Mean slope

2,1°

Water table

90cm

Forest

66%

Crops

21%

Urban

0%

Protected

3%

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