Ontologia

Commune · FRA

Saint-Agnan

France

CfaTemperate, no dry season, hot summer(100 %)

Species observed

1 522

Observations

18 429

Area

6,2km²

Ecological tissue

Sample of 35 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-Agnan : 24 espèces reliées par 97 interactions GloBI sur 6 types (connectance 13.8%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
38
Interactions affichées
97
Connectance
0.138
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

1 522 distinct species · 18 429 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

18 429 obs · 3 cellules
Obs. / cellule
≥ 7 904
7 904–7 903
7 904–7 903
5 494–7 903
< 5 494

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

Climate

Mean T°

13,4°C

Annual rain

768mm

Warmest m°

26,6°C

Coldest m°

2,3°C

Elevation: 204 m on average (min 185 m, max 236 m)

Bioclimatic detailsExpert
Annual mean temp.
13,4°C
Annual rain
768mm
Warmest month
26,6°C
Coldest month
2,3°C
Mean alt.
204m
Min
185m
Max
236m
Std. dev.
11m
Köppen-Geiger (dominant)
CfaTemperate, no dry season, hot summer(100 %)Temperate

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

Soil & lithology

pH H₂O

7,2

Org. C

23,0g/kg

Clay

31,8%

Sand

27,9%

Silt

40,2%

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

Dominant lithology: ssGLiMaggregated to Tarn

3 soil depths detailedExpert
0–5 cm
pH H₂O
7,1
Org. C
40,6g/kg
Clay
30,6%
Sand
28,5%
Silt
41,0%
5–15 cm
pH H₂O
7,3
Org. C
13,2g/kg
Clay
30,5%
Sand
28,0%
Silt
41,5%
15–30 cm
pH H₂O
7,2
Org. C
15,3g/kg
Clay
34,4%
Sand
27,4%
Silt
38,3%

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

Land cover

Forest4.3%
Crops76.3%
Built-up0.7%
Bare soil4.3%
Other (grassland, water…)14.4%

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

Hydrology1 basins · 0 lakes · 0 rivers

Hydrology metrics for this exact territory

Basins crossed

1

Max drainage

3 501km²

Discharge in basins

3,7m³/s

Mean precip.

729mm/an

Mean T°

12,9°C

Moisture idx

-0,26

Max snow

1%

Mean runoff

263mm/an

Mean elev. (basins)

154m

Watersheds crossing here

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

Human pressure

Pop. density

0hab/km²

Night light

0,5nW

Built-up

72,4%

Pesticides

44,9kg/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.