Lac de Grand-Lieu
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2015
63 km²
Commune · FRA
France
Species observed
3 387
Observations
85 217
Area
97,9km²
Sample of 41 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).
Tissu écologique de Saint-Philbert-de-Grand-Lieu : 30 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 93 interactions GloBI sur 6 types (connectance 11.3%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
3 387 distinct species · 85 217 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Mean T°
12,3°C
Annual rain
848mm
Warmest m°
23,6°C
Coldest m°
3,0°C
Elevation: 11 m on average (min -1 m, max 41 m)
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
pH H₂O
6,1
Org. C
46,6g/kg
Clay
19,5%
Sand
38,7%
Silt
41,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Loire-Atlantique
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology metrics for this exact territory
Stream length here
23,9km
Lake surface here
21,11km²
Basins crossed
1
Max stream order
4
Max drainage
1 269km²
Discharge in basins
1,7m³/s
Mean precip.
797mm/an
Mean T°
11,7°C
Moisture idx
-0,02
Max snow
4%
Mean runoff
531mm/an
Mean elev. (basins)
33m
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Pop. density
1hab/km²
Night light
0,4nW
Built-up
140,0%
Pesticides
44,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Special Areas of Conservation (Habitats Directive) · 2015
63 km²
Wetland of International Importance (Ramsar Site) · 1995
62 km²
Special Protection Area (Birds Directive) · 2019
57 km²
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy) · 2007
28 km²
National Nature Reserve · 1980
27 km²
Regional Nature Reserve · 2008
7 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.