Ontologia

Commune · FRA

Saint-Aignan-Grandlieu

France

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

Species observed

2 242

Observations

29 814

Area

18km²

Ecological tissue

Sample of 30 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-Aignan-Grandlieu : 16 espèces reliées par 113 interactions GloBI sur 6 types (connectance 26.0%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
113
Connectance
0.260
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

2 242 distinct species · 29 814 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

29 814 obs · 3 cellules
Obs. / cellule
≥ 17 228
17 228–17 227
17 228–17 227
8 221–17 227
< 8 221

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

Climate

Mean T°

12,3°C

Annual rain

862mm

Warmest m°

23,5°C

Coldest m°

2,9°C

Elevation: 13 m on average (min 1 m, max 28 m)

Bioclimatic detailsExpert
Annual mean temp.
12,3°C
Annual rain
862mm
Warmest month
23,5°C
Coldest month
2,9°C
Mean alt.
13m
Min
1m
Max
28m
Std. dev.
7m
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

5,9

Org. C

37,0g/kg

Clay

17,3%

Sand

42,1%

Silt

40,6%

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
5,8
Org. C
64,0g/kg
Clay
17,6%
Sand
43,0%
Silt
39,4%
5–15 cm
pH H₂O
5,9
Org. C
26,1g/kg
Clay
17,2%
Sand
42,4%
Silt
40,4%
15–30 cm
pH H₂O
5,9
Org. C
20,8g/kg
Clay
17,2%
Sand
40,9%
Silt
41,9%

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

Land cover

Forest27.8%
Crops24.8%
Built-up4.3%
Bare soil0.6%
Other (grassland, water…)42.5%

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

Hydrology2 basins · 1 lakes · 2 rivers

Hydrology metrics for this exact territory

Stream length here

0,7km

Lake surface here

0,22km²

Basins crossed

2

Max stream order

3

Max drainage

115 298km²

Discharge in basins

2,1m³/s

Mean precip.

797mm/an

Mean T°

11,7°C

Moisture idx

-0,02

Max snow

5%

Mean runoff

531mm/an

Mean elev. (basins)

33m

Watersheds crossing here

Lakes (1, top by area)

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

Human pressure

Pop. density

1hab/km²

Night light

4,4nW

Built-up

425,7%

Pesticides

44,2kg/km²

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

Protected areas7

IUCN Not Reported · 4IUCN IV · 3

Lac de Grand-Lieu

IUCN Not Reported

Special Areas of Conservation (Habitats Directive) · 2015

63 km²

Lac de Grand-Lieu

IUCN Not Reported

Wetland of International Importance (Ramsar Site) · 1995

62 km²

Lac de Grand Lieu

IUCN Not Reported

Special Protection Area (Birds Directive) · 2019

57 km²

Complete list

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.