Estuaire de la Loire
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive) · 2014
218 km²
Commune · FRA
Saint-Viaud
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
220
Observations
461
Area
31,6km²
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 Saint-Viaud : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 3 bulles famille, 70 interactions GloBI documentées sur 5 types (connectance 10.0%, filtre Serrano α=0.2). Les 3 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Espèces affichées
38
Interactions affichées
70
Connectance
0.100
Patrimoniales
1
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
220 distinct species · 461 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
12,3°C
Annual rain
790mm
Warmest m°
22,9°C
Coldest m°
3,3°C
Elevation: 21 m on average (min -1 m, max 49 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
12,3°C
Annual rain
790mm
Warmest month
22,9°C
Coldest month
3,3°C
Mean alt.
21m
Min
-1m
Max
49m
Std. dev.
11m
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
43,2g/kg
Clay
21,9%
Sand
34,5%
Silt
43,6%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiMaggregated to Loire-Atlantique
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
5,9
Org. C
71,5g/kg
Clay
21,6%
Sand
34,6%
Silt
43,8%
5–15 cm
pH H₂O
5,9
Org. C
32,8g/kg
Clay
21,6%
Sand
34,2%
Silt
44,2%
15–30 cm
pH H₂O
5,9
Org. C
25,3g/kg
Clay
22,4%
Sand
34,7%
Silt
42,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest13.6%
Crops51.8%
Built-up1.2%
Bare soil0.7%
Other (grassland, water…)32.7%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 0 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,3km
Basins crossed
3
Max stream order
1
Max drainage
116 723km²
Discharge in basins
10,2m³/s
Mean precip.
830mm/an
Mean T°
11,9°C
Moisture idx
0,04
Max snow
6%
Mean runoff
537mm/an
Mean elev. (basins)
15m
Watersheds crossing here
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,4nW
Built-up
124,4%
Pesticides
43,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN Not Reported · 2IUCN IV · 1🌊 Marine · 3
Estuaire de la Loire
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2018
202 km²
Site du Carnet
IUCN IVBiotope Protection Order · 2019
3 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.