Ontologia

Commune · FRA

Trévien

France

CfbTemperate, no dry season, warm summer(79 %)

Species observed

717

Observations

2 257

Area

16,3km²

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 Trévien : 31 espèces + 7 bulles famille, 80 interactions GloBI documentées sur 5 types (connectance 11.4%, filtre Serrano α=0.2). Les 7 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).

Espèces affichées
38
Interactions affichées
80
Connectance
0.114
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

717 distinct species · 2 257 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

2 257 obs · 1 cellules
Obs. / cellule
≥ 2 257
2 257–2 256
2 257–2 256
2 257–2 256
< 2 257

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

Climate

Mean T°

12,4°C

Annual rain

972mm

Warmest m°

25,7°C

Coldest m°

1,4°C

Elevation: 337 m on average (min 267 m, max 425 m)

Bioclimatic detailsExpert
Annual mean temp.
12,4°C
Annual rain
972mm
Warmest month
25,7°C
Coldest month
1,4°C
Mean alt.
337m
Min
267m
Max
425m
Std. dev.
43m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(79 %)Temperate

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

Soil & lithology

pH H₂O

6,5

Org. C

32,8g/kg

Clay

25,0%

Sand

37,1%

Silt

38,0%

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
6,5
Org. C
52,3g/kg
Clay
23,8%
Sand
38,1%
Silt
38,2%
5–15 cm
pH H₂O
6,5
Org. C
26,7g/kg
Clay
23,7%
Sand
37,9%
Silt
38,4%
15–30 cm
pH H₂O
6,5
Org. C
19,5g/kg
Clay
27,4%
Sand
35,2%
Silt
37,4%

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

Land cover

Forest19.1%
Crops44.7%
Built-up0.4%
Bare soil0.9%
Other (grassland, water…)34.9%

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

Hydrology2 basins · 1 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

6,4km

Lake surface here

0,06km²

Basins crossed

2

Max stream order

2

Max drainage

1 541km²

Discharge in basins

0,2m³/s

Mean precip.

775mm/an

Mean T°

12,0°C

Moisture idx

-0,20

Max snow

4%

Mean runoff

365mm/an

Mean elev. (basins)

392m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

0hab/km²

Built-up

42,0%

Pesticides

45,2kg/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.