Ontologia

Commune · FRA

Pessac

France

CfbTemperate, no dry season, warm summer(100 %)

Species observed

2 215

Observations

36 903

Area

38,5km²

Ecological tissue

Sample of 38 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 Pessac : 32 espèces + 6 bulles famille, 105 interactions GloBI documentées sur 5 types (connectance 14.9%, filtre Serrano α=0.2). Les 6 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
38
Interactions affichées
105
Connectance
0.149
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Species present

2 215 distinct species · 36 903 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

36 903 obs · 2 cellules
Obs. / cellule
≥ 31 774
31 774–31 773
31 774–31 773
31 774–31 773
< 31 774

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

Climate

Mean T°

13,6°C

Annual rain

913mm

Warmest m°

26,5°C

Coldest m°

2,9°C

Elevation: 45 m on average (min 18 m, max 54 m)

Bioclimatic detailsExpert
Annual mean temp.
13,6°C
Annual rain
913mm
Warmest month
26,5°C
Coldest month
2,9°C
Mean alt.
45m
Min
18m
Max
54m
Std. dev.
9m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate

CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)

Soil & lithology

pH H₂O

6,1

Org. C

37,0g/kg

Clay

22,5%

Sand

48,1%

Silt

29,4%

Average over 0-30 cm. Per-depth details in expert panel.

Dominant lithology: suGLiMaggregated to Gironde

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,1
Org. C
63,1g/kg
Clay
22,5%
Sand
48,1%
Silt
29,4%
5–15 cm
pH H₂O
6,1
Org. C
27,9g/kg
Clay
21,5%
Sand
49,0%
Silt
29,5%
15–30 cm
pH H₂O
6,2
Org. C
20,1g/kg
Clay
23,5%
Sand
47,3%
Silt
29,2%

SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)

Land cover

Forest17.5%
Crops7.4%
Built-up10.8%
Bare soil0.5%
Other (grassland, water…)63.9%

Copernicus Global Land Cover 100m (Buchhorn et al. 2020)

Hydrology2 basins · 0 lakes · 3 rivers

Hydrology metrics for this exact territory

Stream length here

3,8km

Basins crossed

2

Max stream order

2

Max drainage

55 371km²

Discharge in basins

17,7m³/s

Mean precip.

951mm/an

Mean T°

12,6°C

Moisture idx

-0,01

Max snow

4%

Mean runoff

465mm/an

Mean elev. (basins)

49m

Watersheds crossing here

Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10

Human pressure

Pop. density

9hab/km²

Night light

5,5nW

Built-up

1 075,4%

Pesticides

45,7kg/km²

GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)

France-specific data (Phase 2)

ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.