Ontologia

Commune · FRA

Saint-Trojan

France

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

Species observed

1 011

Observations

6 323

Area

3,2km²

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 Saint-Trojan : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 121 interactions GloBI sur 6 types (connectance 17.2%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
121
Connectance
0.172
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

Species present

1 011 distinct species · 6 323 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

6 323 obs · 1 cellules
Obs. / cellule
≥ 6 323
6 323–6 322
6 323–6 322
6 323–6 322
< 6 323

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

Climate

Mean T°

13,3°C

Annual rain

921mm

Warmest m°

25,6°C

Coldest m°

3,1°C

Elevation: 70 m on average (min 43 m, max 76 m)

Bioclimatic detailsExpert
Annual mean temp.
13,3°C
Annual rain
921mm
Warmest month
25,6°C
Coldest month
3,1°C
Mean alt.
70m
Min
43m
Max
76m
Std. dev.
8m
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

6,0

Org. C

32,1g/kg

Clay

22,9%

Sand

38,5%

Silt

38,6%

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
6,0
Org. C
58,1g/kg
Clay
22,6%
Sand
38,0%
Silt
39,4%
5–15 cm
pH H₂O
6,0
Org. C
23,9g/kg
Clay
22,5%
Sand
38,2%
Silt
39,3%
15–30 cm
pH H₂O
6,0
Org. C
14,3g/kg
Clay
23,6%
Sand
39,4%
Silt
37,0%

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

Land cover

Forest27.8%
Crops24.3%
Built-up1.4%
Bare soil1.6%
Other (grassland, water…)44.9%

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

Hydrology2 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

2

Max drainage

23 784km²

Discharge in basins

0,5m³/s

Mean precip.

877mm/an

Mean T°

12,6°C

Moisture idx

-0,02

Max snow

4%

Mean runoff

524mm/an

Mean elev. (basins)

25m

Watersheds crossing here

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

Human pressure

Pop. density

1hab/km²

Night light

1,1nW

Built-up

135,0%

Pesticides

45,8kg/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.