Ontologia

Commune · FRA

Trignac

France

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

Species observed

2 409

Observations

26 289

Area

13,7km²

Ecological tissue

Sample of 39 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 Trignac : 31 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 79 interactions GloBI sur 5 types (connectance 9.6%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
41
Interactions affichées
79
Connectance
0.096
Patrimoniales
3
Plus dense que (national)0 %(top 100%)

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

Species present

2 409 distinct species · 26 289 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

26 289 obs · 3 cellules
Obs. / cellule
≥ 15 087
15 087–15 086
15 087–15 086
6 773–15 086
< 6 773

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

Climate

Mean T°

12,5°C

Annual rain

755mm

Warmest m°

22,1°C

Coldest m°

4,1°C

Elevation: 2 m on average (min -0 m, max 3 m)

Bioclimatic detailsExpert
Annual mean temp.
12,5°C
Annual rain
755mm
Warmest month
22,1°C
Coldest month
4,1°C
Mean alt.
2m
Min
-0m
Max
3m
Std. dev.
1m
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

6,3

Org. C

83,1g/kg

Clay

22,8%

Sand

33,5%

Silt

43,8%

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

Dominant lithology: ssGLiMaggregated to Loire-Atlantique

3 soil depths detailedExpert
0–5 cm
pH H₂O
6,2
Org. C
108,7g/kg
Clay
21,5%
Sand
34,2%
Silt
44,4%
5–15 cm
pH H₂O
6,2
Org. C
75,8g/kg
Clay
23,5%
Sand
32,8%
Silt
43,7%
15–30 cm
pH H₂O
6,3
Org. C
64,7g/kg
Clay
23,3%
Sand
33,5%
Silt
43,2%

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

Land cover

Forest10.5%
Crops25.9%
Built-up6.1%
Bare soil0.7%
Other (grassland, water…)56.8%

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

Hydrology1 basins · 1 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

4,8km

Lake surface here

1,64km²

Basins crossed

1

Max stream order

3

Max drainage

1 138km²

Discharge in basins

0,0m³/s

Mean precip.

814mm/an

Mean T°

11,7°C

Moisture idx

0,04

Max snow

5%

Mean runoff

527mm/an

Mean elev. (basins)

16m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

3hab/km²

Night light

4,4nW

Built-up

606,7%

Pesticides

44,2kg/km²

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

Protected areas4

IUCN Not Reported · 3IUCN V · 1🌊 Marine · 1

Brière

IUCN V

Regional Nature Park · 1970

566 km²

Grande Briere

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 1995

174 km²

WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN

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.